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# ENDOMONTREAL

Dr Pizem Advanced Endodontics Clinic

## Sitemaps

- [XML Sitemap](https://www.endomontreal.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [A Conservative Compromise That Worked: 8 Years of Function](https://www.endomontreal.com/2026/03/29/a-conservative-compromise-that-worked-8-years-of-function/) - Case of Endodontic treatment in Montreal showing how biology can preserve dental function for 8 years.
- [Balancing  Dentin Preservation and  Success](https://www.endomontreal.com/2025/03/04/balancing-dentin-preservation-and-success/) - The Importance of Pericervical Dentin in Endodontics Modern endodontics aims to save pericervical dentin (PCD) to keep teeth strong and prevent fractures. However, saving too much can block file movement, make apical shaping harder, and reduce irrigation. As a result, treatment may fail more often. Challenges of Narrow Access Cavities Narrow access cavities also make Preserving pericervical dentin is key, but excessive conservation hinders shaping, irrigation, and debridement. Apical size ≥30 improves success and healing. Balance is crucial.
- [Root Canal Calcifications, a Challenge in Root Canal Treatments](https://www.endomontreal.com/2021/06/26/root-canal-calcifications-a-challenge-in-root-canal-treatments/) - According to the Canadian Academy of Endodontics, when having to treat a tooth presenting with an exceptionally complicated preoperative condition, achieving a predictable outcome would be challenging for even the most highly skilled practitioner.Treating a second mandibular molar presenting with a severe pulp canal obliteration such as this one did represent an endodontic procedure challenge
- [What’s new on this blog on Friday, March 4th, 2011](https://www.endomontreal.com/2011/03/04/1764/) - A new case study, orthograde plus retrograde endodontics: Dealing with dystrophic calcification in mesiovestibular root canals Case: 486726 Conceived and maintained free of charge by a dentist, for dentists, both the experienced professional and the beginner - endomontreal.com is dedicated to the exchange of substantive technical content, covering the full range of
- [What’s new on this blog on Friday, March 11th, 2011](https://www.endomontreal.com/2011/03/10/1799/) - A new case study: Steps of intervention in an endodontic revision on a first crowned mandibular molar Conceived and maintained free of charge by a dentist, for dentists, both the experienced professional and the beginner - endomontreal.com is dedicated to the exchange of substantive technical content, covering the full range of information requirements.
- [What's new on this blog on Friday, June 24th, 2011](https://www.endomontreal.com/2011/06/24/whats-new-on-this-blog-on-friday-june-24th-2011/) - A new Dental Operative Microscope (D.O.M.) assisted extreme root canal treatment: OPMI PROergo dental operative microscope VS completely calcified root canals. Case number: 482026
- [What's new on this blog on july, 1st, 2011](https://www.endomontreal.com/2011/07/02/whats-new-on-this-blog-on-july-1st-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment: OPMI PROergo dental operative microscope VS pulp fibrosis in a severely curved canal system
- [What's new on this blog on Friday 8th, july 2011](https://www.endomontreal.com/2011/07/08/whats-new-on-this-blog-on-friday-8th-july-2011/) - 1) A new Dental Operative Microscope (D.O.M.) assisted root canal treatment, case study number 186336: Adherent pulpstones in a mandibular first molar with a supernumerary root (Radix Entomolaris or Radix Molar) and the usefulness of a dental operative microscope (D.O.M.) 2) An interesting article to lurn more about the phantom root (Radix Entomolaris), please
- [What's new on this blog on Thursday 14 July 2011?](https://www.endomontreal.com/2011/07/14/whats-new-on-this-blog-on-thursday-14-july-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment, case study number: 417847 Endodontic therapy on a very long mandibular molar with four curved and calcified canals Please take note that our clinic will be closed between July the 14th 2011 and august the 8th 2011
- [What's new on this blog on Friday 5 August 2011?](https://www.endomontreal.com/2011/08/07/whats-new-on-this-blog-on-friday-5-august-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment, case study number 397137: An endo retreatment and an MTA apical plug have helped in preserving this second mandibular molar
- [What's new on this blog on Friday 12th, August, 2011](https://www.endomontreal.com/2011/08/12/whats-new-on-this-blog-on-friday-12th-august-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment that implied preparation and filling of an extremely curved canal in a calcified maxillary molar. Case study number: 492626 Many thanks to Dr Daniel Halevy for his very nice comment on this post!
- [What's new on this blog Friday, 26th, 2011](https://www.endomontreal.com/2011/08/26/pppp/) - case study number: 497935 A new Dental Operative Microscope (D.O.M.) assisted root canal treatment in a calcified maxillary molar abutment. The procedure implied prior use of Metalift crown and bridge removal system to save an existing bridge.
- [OPMI PROergo Dental Operative Microscope VS Extreme Root Canal System Stenosis on a Maxillary Molar](https://www.endomontreal.com/2011/09/01/27526/) - A New Dental Operative Microscope (D.O.M.) Assisted Root Canal Treatment in a Calcified Maxillary Molar Abutment. Microendodontic. Case Study Number 27526 Acute pain on this maxillary molar is keeping the patient awake all night long. Pain started following a recent filling replacement. This is an irreversible pulpitis diagnosis, patient has been referred for endodontic therapy with the help
- [What's new on this blog Friday 9th, September 2011](https://www.endomontreal.com/2011/09/08/whats-new-on-this-blog-friday-9th-september-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment in a Radix Entomolaris presenting a fift canal (accessory canal) extending from the pulp chamber to the furcation. Case report in microendodontics number 493847
- [Microendodontics with CARL ZEISS OPMI PROergo VS Completely Calcified Canal](https://www.endomontreal.com/2011/09/14/73422/) - A New Dental Operative Microscope (D.O.M.) Assisted Root Canal Treatment on Maxillary Incisor with a Calcified Canal. MicroEndodontic. Case Study Number 73422 Patient has been referred for dental operating microscope assisted root canal. Acute pain on this heavily restored lateral incisor kept the patient awake all night long. Pulpal necrosis and acute apical periodontitis is the diagnosis. Radiographic
- [What's new on endomontreal.com, Friday 15th September 2011?](https://www.endomontreal.com/2011/09/15/whats-new-on-endomontreal-com-friday-15th-september-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment in a maxillary lateral incisor presenting an almost complete mineralization of it's root canal system: Case report in microendodontics number: 73422
- [What's new on endomontreal.com, Friday 23th September 2011?](https://www.endomontreal.com/2011/09/23/whats-new-on-endomontreal-com-friday-23th-september-2011/) - A 3 years post operative Dental Operative Microscope (D.O.M.) assisted root canal treatment follow up on a mandibular molar which presented with an almost complete destruction of it's periradicular tissues: Case report in microendodontics number: 460646
- [Microendodontics with Carl Zeiss OPMI PROergo Dental Operative Microscope. Root Canal Treatment Procedure on a Tooth with Calcified Canal System on Pre-Op. Radiograph](https://www.endomontreal.com/2011/09/28/microendodontics-with-carl-zeiss-opmi-proergo-dental-operative-microscope-root-canal-treatment-even-when-there-is-absolutely-no-visible-canal-on-preop-radiograph/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment in a calcified maxillary incisor. Microendodontic. Case Study Number 237122 Tooth is asymptomatic patient wants to replace this existing crown for esthetic purposes. Replacing this crown without doing any endo might just be the way. But
- [What's new on endomontreal.com, Friday 7th October 2011?](https://www.endomontreal.com/2011/10/07/whats-new-on-endomontreal-com-friday-7th-september-2011/) - An endodontist Dental Operative Microscope (D.O.M.) assisted root canal treatment in a mandibular second molar presenting a partial mineralization of it's root canal system. This case report in microendodontics number 500047 implies an intricate procedure on both a mineralized and a severely curved root canals system.
- [What's new on endomontreal.com on Friday 14th October 2011?](https://www.endomontreal.com/2011/10/13/whats-new-on-endomontreal-com-on-friday-the-14th-october-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment in a maxillary second molar presenting a partial mineralization of it's root canal system. This case report in microendodontics number 449927 displays an intricate procedure on a mineralised very long root canal system with a curvature with an"S" form. This procedure displays as well a second mesiovestibular
- [What's new on endomontreal.com Friday 20th 2011?](https://www.endomontreal.com/2011/10/20/whats-new-on-endomontreal-com-friday-20th-2011/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment in a maxillary second molar presenting a partial mineralization of it's root canal system. This case report in microendodontics number 49821617 displays an intricate procedure on a mineralised root canal systems with a very small radius curvature. Choosing the right instrument is of the utmost importance in
- [What's new on endomontreal.com Friday 28th 2011?](https://www.endomontreal.com/2011/10/23/whats-new-on-endomontreal-com-friday-28th-2011/) - Conceived and maintained free of charge by a dentist in Montreal (Canada), for dentists, endodontists and patients alike, endomontreal.com is dedicated to the exchange of substantive technical content, covering the full range of information requirements. Inviting members from the world wide web, speaking from a wide range of technical experiences, this forum addresses questions about the technical
- [Microendodontics with Carl Zeiss OPMI PROergo Dental Operative Microscope. Root Canal Treatment Procedure on a Lateral Incisor with a Calcified Canal](https://www.endomontreal.com/2011/11/17/501812/) - A new Dental Operative Microscope (D.O.M.) Assisted Root Canal Treatment in a Calcified Maxillary Lateral Incisor. MicroEndodontic. Case Study Number 501812 Radiographic findings: Dystrophic calcifications in the whole canal system are completely obliterating the pulp chamber as well as the root canal itself.
- [What's new on endomontreal.com Wednesday, 25, November 2010?](https://www.endomontreal.com/2011/11/23/whats-new-on-endomontreal-com-friday-25-2010/) - Conceived and maintained free of charge by a dentist in Montreal (Canada), for dentists, endodontists and patients alike, endomontreal.com is dedicated to the exchange of substantive technical content, covering the full range of information requirements. Inviting members from the world wide web, speaking from a wide range of technical experiences, this forum addresses questions about the technical
- [Microendodontics with Carl Zeiss OPMI PROergo Dental Operative Microscope. Root Canal Treatment Procedure on a Second Maxillary Molar with Calcified Canals](https://www.endomontreal.com/2012/02/16/506317/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment on a maxillary second molar with calcified canals. MicroEndodontics. Case Study Number 506317 Radiographic findings: Dystrophic calcifications in the whole canal system are completely obliterating the pulp chamber. It can be expected that the root canal entries are completely embedded in a mass of adherent pulp stones. Endodontic procedure
- [A More Demanding Root Canal Procedure: Calcified Canals and Pulp Chamber Filled with Pulps Stones.](https://www.endomontreal.com/2012/09/28/433336/) - A new Dental Operative Microscope (D.O.M.) assisted root canal treatment in a calcified mandibular molar. Microendodontic. Case Study Number 433336 Broken lingual wall, extended deep restauration, patient has been referred for endodontic therapy with the help of a dental operating microscope because of highly calcified canals. Radiographic findings: Dystrophic calcifications in the whole canal system are completely
- [CAE 48th Annual General Meeting, NOVEMBER 17-20, 2012](https://www.endomontreal.com/2012/10/15/cae-48th-annual-general-meeting-november-17-20-2012/) - To keep his blog visitors informed on the latest breakthroughs in root canal treatment procedures, Dr Pierre Pizem will attend the Canadian Academy of Endodontics Annual General Meeting in Edmonton. Hence, his office will be closed on wednesday and on friday. Conceived and maintained free of charge by a dentist in Montreal (Canada), for dentists, endodontists and
- [We did revamp our Blog!](https://www.endomontreal.com/2010/08/23/we-are-soon-going-to-revamp-our-blog/) - Conceived and maintained free of charge by a dentist, for dentists, both the experienced professional and the beginner - endomontreal.com is dedicated to the exchange of substantive technical content, covering the full range of information requirements. Inviting members from all over the world, speaking from a wide range of technical experiences, this futur (and hopefully
- [Crown lengthening, Root Canal and Core Build up](https://www.endomontreal.com/2020/11/25/crown-lengthening-root-canal-and-core-build-up/) - Patient presented to our office with an irreversible pulpitis on her maxillary first molar. Tooth was calcified and lack of time limited the initial procedure to a pulpectomy on palatal root alone. The patient did not come back for several months to complete the therapy and broke her tooth. It was explained to her that
- [Maxillary Third Molar Root Canal Treatment (Case 438018)](https://www.endomontreal.com/2008/09/25/maxillary-third-molar-root-canal-treatment-case-438018/) - En la radiografia pre operatoria podemos observar un tercer molar superior(maxilar),con acceso dificil debido a la posicion para colocar las limas, pero la sorpresa que nos encontramos despues de la instrumentacion es que los conductos se cruzan entre si haciendo este un caso particular a tratar.
- [Extreme Endo Makeover (Patient Lower Left Side)](https://www.endomontreal.com/2008/07/08/extreme-endo-makeover-patient-lower-left-side-case-2/) - Case Study Number 2458 A 5 years follow up X ray of lower left molars and second premolar
- [Access Through Both a Crown and a Casted Post to Save a Molar](https://www.endomontreal.com/2020/06/06/access-through-both-a-crown-and-a-casted-post-to-save-a-molar/) - Avoiding an extraction and an implant therapy by performing an extreme endodontic procedure
- [AAE Consensus Recommended Diagnostic Terminology](https://www.endomontreal.com/2020/05/05/aae-consensus-recommended-diagnostic-terminology/) - https://www.aae.org/specialty/wp-content/uploads/sites/2/2017/07/endodonticdiagnosisfall2013.pdf
- [Saving a Severely Calcified Tooth with a Root Canal Procedure](https://www.endomontreal.com/2020/03/12/saving-a-severely-calcified-tooth-with-a-root-canal-procedure/) - Adherent calcifications do represent a significant challenge in endodontic procedures. In cases of complete root canal system obliteration by calcifications, it is extremely difficult to locate, negotiate, and fully instrument very narrow root canals. The odds of never being able to find the canals, to break an instrument, to perforate the tooth are extremely high. This
- [Going the extra mile to preserve a tooth](https://www.endomontreal.com/2019/12/20/6371/) - Patient opted for an elective root canal revision of distal root followed by a new post and a new crown instead of extraction and an implant supported crown.
- [Calcified Pulp Chamber with Two Superimposed Floors: A Clinical Approach](https://www.endomontreal.com/2020/02/29/calcified-pulp-chamber-with-two-superimposed-floors-a-clinical-approach/) - Calcified root canal system provide an endodontic treatment challenge. The introduction of new technologies has increased the predictability of these treatments and, consequently, their success rates. This article describes one case with a clinical treatment strategy using high technology for this second mandibular molar with pulp canal obliteration (PCO) using digital radiography (DR), dental operating
- [A post removal and a root canal therapy revision to save a tooth. A 6 years follow up](https://www.endomontreal.com/2020/02/27/a-post-removal-and-a-root-canal-therapy-revision/) - Post removal and endodontic procedure revision on a maxillary first molar presenting with a complete fracture of palatal cusp as well as a previously omitted MB2. Tooth was also tender to percussion, no deep narrow pocket. Amalgam core has been drilled out around the post head. The Flexipost has been removed with an ultrasonic
- [Elective Root Canal Revision Procedure to avoid Extraction and an Implant](https://www.endomontreal.com/2020/02/25/elective-root-canal-revision-procedure-to-avoid-extraction-and-an-implant/) - Patient had pain on this first maxillary molar for the last 12 months. She had been sent for a consultation with a periodontist who performed a root planning because there was abundant bleeding and pain upon probing. Afterward, bleeding did stop and pain subsided. Tooth had been prepared for a crown, however, on the day
- [Apical hook, a challenging root canal procedure](https://www.endomontreal.com/2020/02/22/apical-hook-a-challenging-root-canal-procedure/) - Root canal shape can be challenging to the dentist, especially in teeth with severe root curvatures (small root curvature radius or apical hooks).
- [Avoiding a misdiagnosis  and  locating a narrow Disto vestibular canal](https://www.endomontreal.com/2020/02/21/avoiding-a-misdiagnosis-and-locating-a-narrow-disto-vestibular-canal/) - Patient with a limited opening of her mouth came for a consultation thinking she may need a root canal on painful mandibular first molar upon mastication. There was no pain with the Toothsloot biting test, no visible crack under transillumination, tooth responded to cold within normal limits, there was no deep and narrow pocket upon
- [Pulp Chamber Obliteration, Krasner and Rankow Laws and microendodontics](https://www.endomontreal.com/2020/02/19/pulp-chamber-obliteration-by-adherent-calcifications/) - Root canal treatment on a molar presenting with a pulp chamber obliterated by adherent calcifications
- [Krasner and Rankow laws, CBCT and Microscope](https://www.endomontreal.com/2020/02/17/krasner-and-rankow-laws-cbct-and-microscope/) - Adherent calcifications do represent a significant challenge when one is trying to locate the root canal entries during the procedure. This patient was referred for a pre prosthetic root canal treatment on a calcified first maxillary premolar. In this case, the pulp chamber was completely obliterated by adherent calcifications as well as the root canal entries.
- [A difficult to locate MB2? High-tech: Yes, "Ninja": No](https://www.endomontreal.com/2020/02/05/beware-of-the-conservative-ninja-access/) - endodontics. relationship between endodontic access cavity types and secondary mesiobuccal canal detection. Microscope magnification and CBCT cone beam
- [Thinking Out of the Box 20 years Ago to Preserve a Tooth! An Early Ceramic Material Apical Filling](https://www.endomontreal.com/2013/10/10/mineral-trioxyde-agregate-mta-apical-plug/) - Wide apical foramen, thin canal walls, necrotic pulp would, in year 2000, condemn this tooth and have it replaced by an implant supported crown. Thinking out of the box to preserve that tooth, this MTA (Mineral Trioxide Aggregate) apical plug also known as a ceramic material has been performed by the author back in 2001. Legend #1
- [Acute Apical Abscess Management through a Root Canal Revision Procedure](https://www.endomontreal.com/2018/08/27/acute-apical-abscess-management-through-a-root-canal-revision-procedure/) - Patient came last June with a huge facial swelling in relation with an Acute Apical Abscess on tooth 14. This tooth underwent a root canal procedure 18 years ago. The tooth was short so we opted for a non surgical endodontic revision in order to preserve its root length. On her first appointment both crown
- [A Root Canal Treatment on a Severely Curved Root Canal](https://www.endomontreal.com/2018/08/26/a-root-canal-treatment-on-a-severely-curved-root-canal/) - How to manage a severe root canal curvature
- [A Vertucci's Type 5 Root Canal Configuration in Palatal Root](https://www.endomontreal.com/2018/08/26/a-vertuccis-type-5-root-canal-configuration-in-palatal-root/) - A four years follow up on a RCT on a maxillary first molar presenting with an apical delta in palatal canal (Vertucci's type 5 . Each branch of the delta has been cleaned and shaped with stainless steel Mani K files up to size 35. Each branch has been filled with a single gutta cone
- [Striving to Treat a "C" Shape Root Canal System](https://www.endomontreal.com/2017/11/10/striving-to-treat-a-c-shape-root-canal-system/) - The name comes from the letter "C" shape appearance of a very large isthmus in the pulp chamber floor when viewed from above. This isthmus or groove is the result of the merging of some or all of the root canals at the cervical area near the pulp chamber floor. Incidence is 2,7% in Caucasian
- [A challenging Root Canal Treatment on a Severely Calcified tooth](https://www.endomontreal.com/2017/09/09/a-challenging-root-canal-treatment-on-a-severely-calcified-tooth/) - Severe calcification of the root canal system is not a reason to extract a symptomatic tooth. Microscope also allowed for the MB2 location deep into the MV canal
- [Endodontic Revision Procedure on Mesio Vestibular Root of a Maxillary Molar](https://www.endomontreal.com/2017/06/09/endodontic-revision-procedure-on-mesio-vestibular-root-of-a-maxillary-molar/) - Root Canal revision procedure on a maxillary molar which implied a plastic carrier removal as well as the by-pass of a fractured instrument previously left in the root.
- [A challenging Curved Root Canal Treatment](https://www.endomontreal.com/2017/05/19/a-challenging-curved-root-canal-treatment/) - Tooth torsion , tooth distal inclination , root canal severe curvature and 3 different techniques for numbing made this root canal procedure a challenging one.
- [Preserving a Natural Tooth with a Root Canal Revision Procedure](https://www.endomontreal.com/2017/05/08/preserving-a-natural-tooth-with-a-root-canal-revision-procedure/) - Patient came in one year ago with large swelling on URQ, gave her AB and told her to let me perform an endodontic revision on 14. She vanished and then came back 6 weeks ago with an even bigger swelling, gave her AB and this time, I did not have to insist too much for
- [Crown and post removal, root iatrogenic defect repair and crossed canals  endodontic revision](https://www.endomontreal.com/2017/05/04/crown-and-post-removal-root-iatrogenic-defect-repair-and-crossed-canal-endodontic-revision/) - Patient came in presenting with pain and a swelling on the palatal side of tooth 24. Crown and post removal, root iatrogenic defect repair and crossed canals endodontic revision. Crossed root canals (A rare Vertucci's Type VI Root canal Configuration) is the reason why previous practitioner could not reach the apices.
- [Filling a lateral canal to preserve a tooth, an endodontic revision procedure](https://www.endomontreal.com/2017/04/30/filling-a-lateral-canal-to-preserve-a-tooth-an-endodontic-revision-procedure/) - Patient experienced recurrent pain episodes and swelling coming from an infected previously treated root canals on tooth 15. Extraction and Implant surgery was the sole option offered to her until she landed in our office to get a second opinion. Upon radiographic examination, noticing the fact that the bone rarefaction was mostly located on the
- [Root canal procedure on a remote maxillary molar in a patient with limited opening of the mouth](https://www.endomontreal.com/2017/04/14/root-canal-procedure-on-a-remote-maxillary-molar-in-a-patient-with-limited-opening-of-the-mouth/) - Endodontic procedure instrumentation has been performed with Mani stainless K files and ProTaper Universal (Dentsply). Chelator: RC Prep. PUI Irrigation: NaOCl 5%. Mesio vestibular canal entry located with the help of high magnification and coaxial illumination (Opmi PROergo dental operative microscope from Zeiss) Sealer used: Pulp Canal Sealer. Obturation technique
- [A Challenging Endodontic Procedure on a maxillary second molar](https://www.endomontreal.com/2017/03/31/a-challenging-endodontic-procedure-on-a-maxillary-second-molar/) - Factors affecting the level of difficulty of this endodontic procedure on a long, remote and heavily calcified second maxillary molar 27 (Irreversible Pulpitis): Pulp chamber is obliterated making its access more difficult Narrow root canal entries are embedded in a mass of calcifications, thus, they do have to be located with a microscope Root canals
- [Root canal treatment on a calcified molar](https://www.endomontreal.com/2017/03/30/root-canal-treatment-on-a-calcified-molar/)
- [Selective Root Canal Retreatment to save a tooth](https://www.endomontreal.com/2017/02/14/selective-root-canal-retreatment-to-save-a-tooth/) - Patient came to us for a second opinion because he was previously offered to remove his lower right molar and replace it by an implant supported crown. Huge vestibular swelling and the ''J'' Shape radiolucency on mesial root were the main reason why the patient was told this tooth should be extracted (''J'' Shape lesions such
- [A Huge Radiographic "J" Shape Lesion, Does the Tooth Has a Vertical Root Fracture? a Periodontal Infection? an Endodontic Infection?](https://www.endomontreal.com/2011/03/31/another-radiographic-j-shape-lesion-does-the-tooth-has-a-vertical-root-fracture-a-periodontal-infection-an-endodontic-infection/) - Case Study Number 456147 We have been presented with this mandibular second molar that has a periapical lucency which also has a periodontal component. Patient is experiencing pain. This radiographic image also shows a huge radiographic J-shaped lesion that may be indicative of a vertical root fracture in the mesial aspect of the mesial root.
- [An Intricate Threaded Post Fragment Removal Procedure to preserve a Tooth](https://www.endomontreal.com/2017/01/21/an-intricate-threaded-post-fragment-removal-procedure-to-preserve-a-tooth/)
- [A Root Canal on a Calcified, Curvy Long Tooth](https://www.endomontreal.com/2016/12/03/a-root-canal-on-a-calcified-curvy-long-tooth/) - An intricate root canal treatment on a severely curved and narrow root canal in a tooth presenting with a huge palatal root (28mm). Buccal canals were 25mm long
- [Root Canal Procedure and Nayyar Core Build Up](https://www.endomontreal.com/2016/10/19/root-canal-procedure-and-nayyar-core-build-up/) - Irreversible pulpitis on mandibular first molar. Long,calcified and S shape root canal system made this procedure a rather challenging one. Endodontic procedure instrumentation has been performed with Mani stainless K files and ProTaper Universal (Dentsply). Chelator: RC Prep. PUI Irrigation: NaOCl 5%. pulp stones removal with Ultrasonic tip: BUC One from Spartan. P5 (Dentsply) Sealer used:
- [Root Canal Therapy on a Radix Entomolaris](https://www.endomontreal.com/2016/08/22/root-canal-therapy-on-a-radix-entomolaris/) - Radix Entomolaris do have a supernumerary distal root, leaving this canal untreated may lead to a complete treatment failure
- [An Extreme Root Canal Treatment Procedure](https://www.endomontreal.com/2016/06/18/an-extreme-root-canal-treatment-procedure/) - Patient seen on an emergency basis for irreversible pulpitis on second maxillary molar. Pulp stones removal and pulpectomy performed + interim Ca(OH)2 on palatal canal only. I had to make the patient come back for another setting to complete RCT. The most difficult part of this procedure has been to obtain patency in a remote
- [Root Canal Therapy on an Atypical Root Canal Configuration](https://www.endomontreal.com/2016/05/10/root-canal-therapy-on-an-atypical-root-canal-configuration/) - First maxillary molars typically have 4 canal entries and four distinct canals. This molar has only two canal entries and a deep split in its vestibular root (A Vertucci type V root canal configuration). Both canal entries were also embedded in a mass of adherent calcifications. Furthermore, to my dismay, palatal canal last apical instrument
- [Root canal treatment on a narrow S form root canal](https://www.endomontreal.com/2016/04/19/root-canal-treatment-on-a-s-form-root-canal/) - Root canal system in apical third of this second mandibular molar is barely visible on pre operative dental X ray image indicating an almost complete root canal stenosis. When performing root canal shaping and cleaning in such an abrupt canal narrowing with an S form, Niti files will readily break without warning (This
- [Root canal treatment in a tooth presenting with a severe curvature](https://www.endomontreal.com/2016/04/14/root-canal-treatment-in-a-tooth-presenting-with-a-severe-curvature/) - Irreversible pulpitis, deep carie, deciduous restoration. Maxillary first molar with 4 root narrow canals. The two canals in mesio vestibular root canals are presenting with a curvature into “C” form. Root canal in disto vestibular root has a dilaceration in its apical third. Endodontic procedure instrumentation has been performed with Mani stainless K endodontic
- [Intricate procedure on a C shape root canal system](https://www.endomontreal.com/2016/04/09/intricate-procedure-on-a-c-shape-root-canal-system/)
- [What's new on this blog on Friday, June, 10 th, 2011?](https://www.endomontreal.com/2011/06/10/whats-new-on-this-blog-on-friday-june-10-th-2011/) - A new case study: Root canal system with an "S" form on a second mandibular molar and endodontic therapy. Case number: 6937
- [Root canal procedure on a tooth presenting with a rare anatomical variation](https://www.endomontreal.com/2016/03/29/root-canal-procedure-on-a-tooth-presenting-with-a-rare-anatomical-variation/) - Patient had a fractured cusp and has been referred for a root canal treatment. Indistinct root canal path on pre operative Xray did let us suspect an anatomical variation along with calcified canals. Furthermore, a CareStream Kodak 6100 number 2 sensor had to be positioned vertically in order to get the image of this
- [Cleaning, shaping and filling of an apical root canal split](https://www.endomontreal.com/2016/03/18/cleaning-shaping-and-filling-of-an-apical-root-canal-split/) - Apical split has been cleaned and shaped with precurved stainless steel Mani endodontic K files. Passive ultrasonic irrigation with NaOCl 5%. Filled with gutta and NeoMTA Plus from Avalon Biomed
- [Treating a maxillary molar with 5 canals and 5 portals of exit](https://www.endomontreal.com/2016/03/14/treating-a-maxillary-molar-with-5-canals-and-5-portals-of-exit/) - Anatomical variations must be considered at the beginning of the root canal treatment. Even though at this point, accurate preoperative radiographs are considered essential giving indications to clinicians as to the number of roots and canals that exist in a tooth, adequate examination of pulp chamber floor with the help of magnification and co axial
- [A root canal procedure on a molar presenting with a supernumerary mesio palatal (MP) root](https://www.endomontreal.com/2016/03/10/when-the-mesio-palatal-gets-really-palatal/) - A root canal procedure on molar presenting with an extra mesio palatal (MP) root. A very rare anatomical variation.
- [Sven-Erick Hamp Class III Furcation Defect? Parodontal Prognosis? A Seven years Follow Up](https://www.endomontreal.com/2011/12/10/sven-erick-hamp-class-iii-furcation-defect-parodontal-prognosis-a-seven-years-follow-up/) - Preoperative X ray dental film shows a "furcation defect" encompassing the entire width of the tooth (no probing). A root canal treatment implying a few Calcium Hydroxyde dressings (and being patient) helped this patient in saving what appeared to be a hopeless tooth. Last scan shows a seven years post operative control X ray dental film.
- [A J shaped lesion is not pathognomonic of VRF](https://www.endomontreal.com/2016/02/28/a-j-shaped-lesion-is-not-pathognomonic-of-vrf/) - On July the 29th 2009, we have been presented with this mandibular second molar. Patient was experiencing pain. This radiographic image showed a huge radiographic J-shaped lesion in the mesial aspect of the mesial root. Back then, according to some experts, this type of lesion along with a deep narrow probing was considered as
- [Good Prognosis is in the eye of the beholder](https://www.endomontreal.com/2011/09/23/endo-retreatment-and-an-mta-plug-in-distal-root-canal-case-430646/) - Case Study Number 430646 External root resorption associated with chronic apical periodontitis altered the shape and position of the foramen through osteoclastic activity, in the x ray images (2008), the modified foramen in distal root is positioned farther from the radiographic apex and gutta percha appears in overextension. A large and circumbscribed radiolucency
- [A root canal treatment on a calcified molar](https://www.endomontreal.com/2016/02/20/a-root-canal-treatment-on-a-calcified-molar/) - Root canal system is barely visible on pre operative dental X ray image indicating almost complete pulp chamber and root canal stenosis. Root canal calcification build up represents a challenge for the practicionner when attempting to locate canal entries and when performing root canal shaping and cleaning. Endodontic microscope has been most helpful in
- [An Endodontic Procedure on a Unique Root Canal Morphology](https://www.endomontreal.com/2016/02/05/root-canal-procedure-on-a-unique-root-canal-morphology/) - This case has been posted on a specialized root canal FB forum and earned 596 likes from dentists around the world. See this case at: International Root Canal Procedure Forum A single canal fast break usually indicate a split in root canal apical third. In this mandibular first molar the canal had split into three branches. Each of
- [Preserving patient's own crown](https://www.endomontreal.com/2016/02/04/5928/) - Patient came in for a recementation of her lost crown on her mandibular second molar. This (previously sandblasted) crown still had a nice fitting and a nice 5 mm hight of sound tooth above the gum line structure was still remaining. Tooth was not symptomatic, but, prior to recementating this patient's crown, we tested
- [Root Canal Treatment and Dystrophic calcifications](https://www.endomontreal.com/2016/01/28/root-canal-treatment-and-dystrophic-calcifications/) - Root canal procedure on a calcified tooth presenting with a narrow pulp chamber and diffuse calcification throughout both the mesial and distal root canals. To complete the root canal procedure on this calcified mandibular molar, access opening has been performed with a combination of a 556 cross cut and a round (#2) tungsten carbide bur,
- [Root canal procedure on a calcified mandibular second molar](https://www.endomontreal.com/2016/01/16/5910/) - This patient presented herself with an irreversible pulpitis on her mandibular second molar. Patient had no medical problem and a normal mouth aperture. This very long tooth is in remote position in the arch, its mesial root canals path are into an "S" form. Canal calcifications on top of completely obliterating the pulp chamber,
- [A natural tooth merely escaping from extraction](https://www.endomontreal.com/2016/01/08/a-natural-tooth-merely-escaping-from-extraction/) - Due to the presence of rock hard Russian Red filling material in its root canal, the endodontic revision procedure to save her tooth seemed to be too difficult or too risky for the former practitioner to perform, consequently, patient has been offered a surgery to extract this maxillary premolar and to replace it by a dental implant. Still,
- [Post removal and its replacement to preserve an existing bridge](https://www.endomontreal.com/2015/12/14/post-removal-and-replacement-to-preserve-an-existing-bridge/) - Patient presented himself with a loose bridge. To our dismay, upon removal a long segment of a fractured post was left within the canal of the front abutment. A loosened post in distal abutment also came off with the bridge. Despite the fact that this bridge prognosis is guarded, patient opted for an
- [Preserving a natural tooth or an implant therapy?](https://www.endomontreal.com/2015/11/29/implant-versus-natural-tooth-the-controversy/) - This badly worn tooth could be preserved with a root canal procedure, a casted post and a crown lengthening.
- [Dilacerations: a challenging aspect of root canal treatment procedure](https://www.endomontreal.com/2015/11/25/dilacerations-a-challenging-aspect-of-root-canal-treatment-procedure/) - Patient presented to our office with an AAA. To complete the root canal procedure on this dilacerated tooth, access opening has been performed with a combination of a 556 cross cut and a round tungsten carbide bur (Friction Grip). Operative field observation has been enhanced with high magnification and coaxial xenon lamp illumination (Carl
- [MB2 root canal procedure may imply an extra setting](https://www.endomontreal.com/2015/11/07/mb2-root-canal-procedure-may-imply-an-extra-setting/) - Patient came in on an emergency basis presenting with pain and a swollen left cheek. Access cavity through existing crown, pulp stones removal, four canal entries location, complete shaping and cleaning of three canals out four have been completed during the first setting. Also allowed 30 minutes for drainage, lots of irrigation (Sodium
- [Completely calcified tooth does not necessarily condemn it to extraction](https://www.endomontreal.com/2015/11/04/in-order-to-preserve-those-teeth-calcified-root-canal-procedure-should-be-attempted/) - One must not decide a tooth extraction on the sole basis of an x-ray observation. In cases of complete calcification of root canal systems, the prognosis of teeth that require an endodontic procedure will not become evident until the practitioner has initiated an endodontic treatment to determine whether the canal can be completely negotiated and
- [Shaping a severe root canal curvature to secure a good outcome](https://www.endomontreal.com/2015/10/23/severe-root-canal-curvature-and-good-outcome/) - Severe root canal curvature is a challenging clinical condition for an endodontist. Ledge, root perforation, breaking an instrument are all potential risks.
- [Going the extra mile to secure root canal treatment success](https://www.endomontreal.com/2015/10/15/going-the-extra-mile-to-secure-treatment-success/) - Root canal procedures on a tooth presenting with a Vertucci type V root canal configuration and on another tooth presenting with a hidden fourth canal
- [Post removal helped in preserving a key tooth](https://www.endomontreal.com/2015/10/12/post-removal-helped-in-preserving-a-key-tooth/) - Patient lately experienced several acute apical periodontitis episodes and needed to have this second maxillary premolar treated. Root canal revision seemed to be a painstaking procedure due to the large casted post cemented within the 2 root canals. Risk of fracturing the tooth while attempting to remove the post is a concern. Still, succeeding
- [Too much calcification for a root canal treatment?](https://www.endomontreal.com/2015/10/02/tooth-calcification-and-root-canal-treatment/) - Complete obliteration of the pulp chamber represents a challenge for the endodontist when performing a root canal procedure.
- [A root canal procedure on a C shape root canal](https://www.endomontreal.com/2015/09/27/a-root-canal-procedure-on-a-c-shape-root-canal/) - This complex root canal treatment has been performed on a very unique root canal system shape. Only high end dental equipment can allow for preserving such a tooth
- [Root Canal Treatment of the Hidden MB2 canal](https://www.endomontreal.com/2015/09/30/root-canal-treatment-of-the-hidden-mb2-canal/) - Maxillary first molars do have a fourth hidden canal in 92% of the cases. Omitting to locate and treat it leads to a treatment failure.
- [The dental operative microscope does play a key role in difficult root canal treatments](https://www.endomontreal.com/2015/09/15/the-major-role-of-a-dental-operative-microscope-in-root-canal-treatment-procedures/) - The patient was experiencing a daily constant nagging pain for the last 2 months. Pain increased along with some gum swelling the during last two days. Tooth is calcified thus its root canals are narrow and the pulp chamber is filled with pulp stones. Locating narrow root canals entries can be done in an
- [Alleviating patient's pain through a conservative root canal therapy first step](https://www.endomontreal.com/2015/09/13/alleviating-patients-pain-through-a-conservative-root-canal-therapy-first-step/) - With a pronounced soft tissue swelling, and an excruciating pain, the immediate task is to relieve pressure by establishing drainage through opening up the tooth
- [Saving a Tooth Through an Intricate Root Canal Procedure](https://www.endomontreal.com/2015/08/27/saving-a-tooth-through-an-intricate-root-canal-procedure/) - The patient insisted on keeping is own natural tooth even though it was badly decayed and it presented with an uncomplicated crown root fracture on its lingual side
- [How to avoid a root canal treatment](https://www.endomontreal.com/2015/07/21/how-to-avoid-a-root-canal-treatment/) - Avoiding a root canal treatment on a tooth presenting with deep carious lesion reaching the pulp with bioactive material is reachable goal
- [Zeiss Opmi Pro Ergo Dental Operative Microscope VS Almost Complete Stenosis of Root Canal System  ](https://www.endomontreal.com/2011/03/17/case-study-number-317736/) - Root Canal Procedure on Calcified Canals. Case Study Number 317736 Patient referred for pre prosthetic endodontic treatment on mandibular first molar. Preoperative X ray dental film shows a complete mineralization of both mesial part of pulp chamber and mesial canals as well as a complete stenosis of distal canal(s?) Dental operative microscope and ultrasonic tips
- [Curved Canal and Pulp Stones](https://www.endomontreal.com/2008/07/24/434337/) - Case Study Number 434337
- [Carl Zeiss Opmi Proergo Microscope VS Complete Stenosis of an Apical Root Canal Split](https://www.endomontreal.com/2011/03/22/microscope-vs-complete-stenosis-of-an-apical-stenosis-in-a-vertucci-type-5-canal-system-case-487445/) - Calcified Canals. Case Study Number 487445 Clinical examination: Sinus tract, mobility: 0, deciduous amalgam restoration. Radiographic examination: Alveolar bone with circumscribed lucency, apical root canal split, hypertaurodontism (bull's tooth), apical root canal split branches not visible on X ray dental film, hypercementosis Diagnosis: pulpal necrosis with chronic periapical infection, Etiology: marginal leakage, caries Root canal procedure:
- [Huge Piece of Amalgam Removal](https://www.endomontreal.com/2008/07/03/huge-piece-of-amalgam-removal-case-2/) - Case Study Number 02
- [Root Canal Procedure: Apicoectomy, Curettage and Retrofilling](https://www.endomontreal.com/2008/07/03/case-3-2/) - Case Study Number 03
- [Root Canal Procedure: Apicoectomy, Curettage and Retrofilling ](https://www.endomontreal.com/2008/07/03/case-1-3/) - Case 1 : Pre Operative X Ray Film One year Post Operative Two years Post Operative
- [An Endodontic Revision and a Tooth Sectioning on a Mandibular Right First Molar to Preserve it](https://www.endomontreal.com/2008/07/07/tooth-sectioning-lower-right-first-molar-case-336/) - Endodontic Re-treatment and Tooth Sectioning Procedure (2004). Case Study Number 336 Root canal retreatment in distal root, machined post (FlexipostTM) cemented with RelyX and an amalgam core build up and tooth sectioning. A complete regeneration of periradicular tissues occured one year later. Tooth had a crown in 2008 and is still functional in August 2011
- [Tooth Sectioning Upper Right First Molar](https://www.endomontreal.com/2008/07/07/tooth-sectioning-upper-right-first-molar-case-2/) - Case Study Number 02
- [Tooth Sectioning Upper Right Molar](https://www.endomontreal.com/2008/07/07/tooth-sectioning-upper-right-molar-case-5/) - Case Study Number 05
- [Upper Right Second Molar Tooth Sectioning](https://www.endomontreal.com/2008/07/07/upper-right-second-molar-tooth-resection-case-4/) - Case Study Number 04
- [A Root Canal Treatment and an Amalgam Post and Core Build up in a Single Appointment to Preserve a Tooth](https://www.endomontreal.com/2012/08/28/497146-2/) - Endodontic. Case Study Number 497146 Acute pulpitis, 60 year old patient is going away for scuba vacation trip the next day. (Murphy's law) According to Nachum Samet and Anna Jotkowitz in their "Classification and prognosis evaluation of individual teeth—A comprehensive approach", prognosis evaluation of this tooth is "fair such that treatment outcome is considered predictable" and "the
- [Endodontic Therapy, Amalgam Post & Core Build Up (Nayyar Cores)? or Implant Therapy?](https://www.endomontreal.com/2013/11/21/504046/) - Extraction and implant therapy was the first treatment plan for those two teeth. Root canal treatment, amalgam post and core (Nayyar core) was the patient's choice.
- [A Difficult Right Angle Root Canal Curve To Treat](https://www.endomontreal.com/2008/06/13/a-difficult-right-angle-root-canal-curve-to-treat-case-425/) - Case Study Number 425 A difficult right angle curve to clean shape and obturate. Extruded cement material (Pulp Canal Sealer) will be gone within a few months due to osteoclastic activity.
- [Root Canal Treatment](https://www.endomontreal.com/2008/06/20/case-12/) - Case Study Number 12
- [A Right Angle Exit in Distal Root of a Lower Left Molar](https://www.endomontreal.com/2008/06/20/case-1/) - Case Study Number 01
- [An Unique Canal Configuration](https://www.endomontreal.com/2008/06/24/a-unique-canal-configuration/) - Quite uncomon, I could not find another one like this in any book…
- [Crossed Canals in a Maxillary Molar Vestibular Roots](https://www.endomontreal.com/2008/07/03/crossed-canals-in-vestibular-root-upper-molar-case-2/) - Case Study Number 02
- [Endodontic Therapy on a Very Long Mandibular Molar with Four Curved and Calcified Canals ](https://www.endomontreal.com/2011/07/14/417847/) - Case Study Number 417847
- [To Save or Not To Save? That Was the Question. A Seven Years Post Endodontic Treatment Outcome Follow Up](https://www.endomontreal.com/2011/12/02/to-save-or-not-to-save-that-is-the-question-case-1/) - Case Study Number 368745 Patient was told seven years ago to remove lower right premolar and replace this tooth by an implant supported crown. Lack of periradicular tissues implied a guided tissue regeneration which, in turn implied a bone curetage close to the mental foramen. Estimated health risk: A possible permanent nerve paresthesia caused by a curetage or
- [Silver Points and Broken Silver Point Retrieval in Apical Third Mesiovestibular R.C.](https://www.endomontreal.com/2008/06/04/silver-points-and-broken-silver-point-retrieval-in-apical-third-mesiovestibular-r-c-case-3/) - Case Study Number 03
- [Root Canal Treatment. Dealing with Silver Points Retrieval on Lower Molar](https://www.endomontreal.com/2008/10/01/silver-points-retrieval-on-lower-molar-case-2/) - Case Study Number 02 Silver points removal and treatment of previously omitted distolingual root canal.
- [Root Canal Retreatment to Preserve a Tooth. Dealing with Silver Points Removal](https://www.endomontreal.com/2012/06/13/471546/) - Case study number 471546 Symptomatic (and badly worn tooth), endodontic Re-treatment implied two silver points removal in mesial root, Re-treatment of distal root, calcium hydroxide dressing for one week and a gutta percha and Pulp Canal Sealer final obturation. Amalgam post and core build up will allow for a porcelain fused to metal crown
- [A Root Canal Revision and an Another Amalgam Post and Core Build Up to Preserve a Tooth](https://www.endomontreal.com/2012/09/15/480636/) - Endodontic. Case Study Number 480636 We have been presented with this previously treated tooth. Twenty years ago, the root canal system has been filled with Sargenti paste (N2). 1 month ago, patient lost his post and crown and tooth has been left
- [Sargenti Paste Removal from Root Canal System, a Demanding Task to Save a Tooth](https://www.endomontreal.com/2008/06/29/cas-3-2/) - Case Study Number 03
- [Endodontic Revision Procedure on Mandibular Molar, a 6 months Post Operative Outcome](https://www.endomontreal.com/2012/02/10/495336/) - Case Study Number 495336 Symptoms: Acute pain to pressure, patient is eating on the opposite side. Root canal was done three years ago. Tooth root canal system has been retreated (reshaping and cleaning) and calcium hydroxide paste inserted as an intracanal medication, symptoms subsided. A week later, final root canal obturation with gutta percha and pulp
- [OPMI PROergo vs Russian Red Obturation Material Removal and VS Untreated Third Calcified Root Canal](https://www.endomontreal.com/2013/03/07/526237/) - MicroEndodontic. Case Study Number 526237 Some info on Russian red or resorcinol formaldehyde cement, a potentially toxic root canal filling material which, once set, become very difficult to retrieve from the tooth. Russian red technique allow for its provider to perform a
- [Ledge Bypass Upper First Premolar](https://www.endomontreal.com/2008/07/08/ledge-bypass-upper-first-premolar-case-308/) - Study Case Number 308 Microscope allowed us to find the previously lost pathway to the apex. This casted post has been adapted to patient own previous bridge.
- [Silver Points Retrieval and Endodontic Retreatment on First Maxillary Premolar ](https://www.endomontreal.com/2008/10/01/silver-points-retrieval-on-first-upper-premolar-case-3/) - Case Study Number 34571514 Pre-operative X ray film shows symptomatic maxillary right premolars. Four years after retreatment, recall radiographic follow-up (above) shows complete healing. Teeth are still asymptomatic and functional in 2010. Silver points have been present in root canals for 25 years, sealer in apical region is long gone due to coronal "macroleakeage", this allowed
- [When a "J" Type Lesion on an X Ray Image, as well as Probing a "Deep Narrow Periodontal Pocket" Could Have Missled the Dental Practioner to Conclude the Presence of a Cracked Tooth.](https://www.endomontreal.com/2011/04/08/a-j-type-lesion-on-a-x-ray-image-is-certainly-not-a-pathomognic-signe/) - This is a case where, based on the X ray image of a "J" type lesion in combination with a deep narrow periodontal probing, one could easily think of a cracked tooth. However, when observing under high magnification, no crack could be seen from within the root canal mesial wall. This J shaped radiolucency
- [Root Canal Retreatment Procedure on a Mandibular Molar Displaying a Blunderbuss Apical Opening ](https://www.endomontreal.com/2012/09/29/502636/) - Endodontic. Case Study Number 502636 Patient has been referred to our dental clinic for a root canal retreatment evaluation on this very sensitive mandibular first molar. On radiographic examination, distal root canal has a blunderbuss apical opening caused by transportation along with some filling material overextension. Mesial root canals obturations fall short from the apical constriction probably due
- [Root Canal Treatment: Dealing with Casted and Machined Posts Removal ](https://www.endomontreal.com/2008/06/07/case-409/) - Case Study Number 409
- [Extreme Endo to Preserve Two Teeth Which May Otherwise Be Lost](https://www.endomontreal.com/2008/07/24/extreme-endo-to-preserve-2-teeth-wich-may-otherwise-be-lost-cases138261/) - Case Study Number 138261
- [External Resorptive Defect Healing Lower Right First Molar](https://www.endomontreal.com/2008/07/08/retreatment-an-alternative-to-implant-suported-crown-case-6/) - Case Study Number 06 Two years follow up X ray film (Third to the right) shows nice periradicular tissues healing. A five years control X ray film (Last to the right) shows a perfectly healed PDL and a complete elimination of sealer excess. Sealer excess is not a problem if it is a ZOE based material. Unfortunately,
- [Broken Post Removal on Lateral Incisor](https://www.endomontreal.com/2008/09/04/broken-post-removal-on-lateral-incisor-case-436822/) - Case Study Number 436822
- [Maxillary Right First and Second Molars R.C.T.](https://www.endomontreal.com/2008/10/21/maxillary-right-first-and-second-molars-r-c-t-case-43881617/) - Case Study Number 43881617 Denticles and an MB2 canal entry to find in this maxillary first molar makes preoperative condition complicated. Post removal, tooth positon in the arch, ledges to bypass and the fact that this is a retreatment case, makes preoperative condition complicated in this maxillary second molar.
- [Post Removal and Endo Retreatment on First Mandibular Premolar ](https://www.endomontreal.com/2008/12/01/post-removal-and-endo-retreatment-on-first-mandibular-premolar-case-43623536/) - Case Study Number 43623536 Pre Op. clinical situation: Long roots, root canals calcified in apical thirds on mandibular molar. Post to remove and endo to retreat on mandibular premolar.
- [Crown and Post Removal on a Second Mandibular Premolar](https://www.endomontreal.com/2009/10/15/432835/) - Case Study Number 432835 Persistent disease on second mandibular premolar. Tooth decay on abutment. Risks of post removal include: fracture of the tooth, leaving the tooth non restorable, root perforation, post breakage, and inability to remove the post. An additional concern is ultrasonically generated heat damage to the periodontium. Therefore, an apicoectomy and retrofilling or an
- [A Root Canal Retreatment Involving a Crown and Two Posts Removal allowed for this Painful Tooth to Be Preserved](https://www.endomontreal.com/2012/04/13/511536/) - Microendodontic. Case Study Number 511536 Sixty years old patient presenting with an abscessed mandibular molar. Diagnosis: Persisting disease after (25 year old) root canal treatment. A crown and two post removal where necessary in order to gain access to root canal system for retreatment. Only two apointments required to save that tooth: First
- [Extreme Endo to Preserve a Tooth Which May Otherwise Be Lost](https://www.endomontreal.com/2008/06/07/extreme-endo-to-preserve-a-tooth-wich-may-otherwise-be-lost-case-316/) - Case Study Number 316 Legend: Separated file Machined post Previously underseen fourth canal apex Endo retreatment steps: Opening through PFM 17 16 15 X 13 bridge abutment, mesio buccal (MB) and mesio buccal 2 (MB2) canals location. MB root canal retreatment implying separated instrument retrieval. MB2 canal entry location with 30 X magnification and canal
- [Long Casted Post and Broken Instrument Removal to Allow for Endodontic Revision on Maxillary First Molar](https://www.endomontreal.com/2008/06/07/extreme-endo-to-preserve-a-tooth-wich-may-otherwise-be-lost-case-042210/) - Case Study Number 042210 This case shows more than one factor listed in the HIGH DIFFICULTY category: non-negotiated canal, ledge and separated instrument in the apical third of a very sharply curved mesiovestibular root canal, a very long casted post in palatal root canal to remove involving a risk of tooth fracture. Step 1. Crown
- [Tooth Sectioning Lower Left Molar ](https://www.endomontreal.com/2008/07/07/tooth-sectioning-lower-left-molar-case-1/) - Case Study Number 01 Lower symptomatic first molar with broken instrument in mesial root. When broken instrument cannot be removed, tooth sectioning with mesial root removal can be an option. Another alternative to implant supported crown.
- [Extreme Endo to Save Second Mandibular Premolar](https://www.endomontreal.com/2009/02/13/extreme-endo-to-save-second-mandibular-premolar-case-436145/) - Case Study Number 436145 Crown and post removal on second mandibular premolar, broken instrument in middle third root canal removed under the high magnification of dental operating microscope(DOM), an acute apical abscess to manage made this tooth rescue a very challenging one.
- [OPMI PROergo Microscope VS Separated Paste Filler on Second Mandibular Molar ](https://www.endomontreal.com/2011/05/05/opmi-proergo-microscope-vs-separated-paste-filler-on-second-mandibular-molar-case-491047/) - Study Case Number 491047 We have been presented with this previously treated tooth. The canal system has been filled with Sargenti's paste and a separated past filler still remains in mesial canal. Second image displays a mesial root close up with the broken paste filler reaching it's apical third. Patient is
- [Broken NITI File Retrieval in Mesiovestibular Root of a Maxillary Molar](https://www.endomontreal.com/2010/07/18/broken-niti-file-retrieval-in-mesiovestibular-root-of-a-maxillary-molar-case-264266/) - Case Study Number 264266 Tooth presenting an " against all odds " clinical situation , many would think " you don't have to worry it is dead! " Dental operative microscope allows the practitioner to let it be something he tried his damnedest on.
- [Removing a Tiny Fractured Instrument Fragment from a Root Canal System.](https://www.endomontreal.com/2013/09/13/36-endodontic-revision-implying-broken-instrument-removal-from-root-canal-system/) - Mass of embedded pulp stones is still present in pulp chamber and it must be removed to increase both retention and strength of planned core Big chunk of metal must be removed from mesio vestibular root canal Patency must be recovered in all 3 blocked canals in order to shape, clean and fill those to the
- [MTA External Root Resorption Repair ](https://www.endomontreal.com/2008/06/09/mta-external-root-resorption-repair-case-326/) - Case Study Number 326 Pre and post MTA repair of an external resorption defect In response to a Canadian collegue concern about this MTA repair :"The overextension of the material behond external root contour seems not to affect the prognosis of the repair” Ref. : Pathway to the pulp, Ninth edition, Chapter 25, page 1000.
- [MTA Mecanical Defect Repair Above Bone Level](https://www.endomontreal.com/2008/06/09/mta-mecanical-defect-repair-above-bone-level-case-325/) - Case Study Number 325 I. Left side X Ray film: Iatrogenic defect 3 mm short gutta percha obturation II. Right side X Ray film: MTA repair (iatrogenic defect) New gutta percha obturation III. 12 month follow up X Ray
- [Extreme Endo to Avoid Implants Supported Crowns on 14,15,16](https://www.endomontreal.com/2008/12/15/extreme-endo-to-avoid-implants-supported-crowns-on-141516-case-410712/) - Case Study Number 410712 Teeth 12, 13 and 17 are existing 17XXX13,12 bridge abutments. Previous bridge done by a prosthodontist lasted 12 years. Lack of bone structure precluded implants surgery in number 16,15 and 14 and patient did not want any sinus lift surgery. Tooth number 12 became a key abutment to save without shortening its
- [MTA Apical Plug on First Maxillary Premolar](https://www.endomontreal.com/2008/12/16/mta-apical-plug-on-first-maxillary-premolar-case-420814/) - Case Study Number 420814 Patient has been advised of bad tooth prognosis because of external apical resorptive defect and suspected huge amount of tooth decay in root canal. Nevertheless patient refused implant supported crown on maxillary first premolar. An attempt has been made to save this tooth.
- [Difficult Root Canal Revision Procedure. A Critical Options Analysis.](https://www.endomontreal.com/2013/11/29/decisions-decisions/) - Orthograde Root canal Retreatment ? Apical Surgery with MTA Retrofilling ? or extraction and implant? Which of these options would better serve the patient?
- [MB1 and MB2 Even Though Merging Did Not Prevent this Patient to Get an A.A.A.](https://www.endomontreal.com/2008/06/07/cas-2/) - Case Study Number 02 Symptomatic apical lesion on mesio vestibular root of first upper left molar. Pre operative X ray film shows a tough post to remove and a pre-existing root canal treatment performed 20 years ago. First appointment: Crown and casted post removal: MB1,P, DB retreatment and MB2 locating cleaning and shaping. Complete canal system
- [Previously Underseen Second Mesiovestibular (MB2) Root Canal Location and Treatment Under Surgical Operating Microscope ](https://www.endomontreal.com/2008/06/24/second-mesiovestibular-mb2-and-retreatment/) - Case Study Number 03
- [Ending Symptoms by Locating and Treating an MB2](https://www.endomontreal.com/2008/06/24/case-406/) - Patient came in our office with this very well conducted root canal (Left picture). The tooth had a radiolucid kind of filling for one year and was still symptomatic. The patient was experiencing a daily constant nagging pain to an extreme severe pain during last two flights take off. Careful examination under high microscope magnification
- [The Dental Operative Microscope and a MTA Tooth Perforation Repair. The Impossible Made Possible.](https://www.endomontreal.com/2011/02/11/the-dental-operative-microscope-and-mta-the-impossible-made-possible-case-461716/) - Case Study Number 461716 Patient came to our office with spontaneous intermittent pain on maxillary right side. He can readily identify the tooth, he is showing the first molar. Patient is taking many Aspirin tablets per day and is tired of suffering. Tooth history: first attempt of root canal treatment which ended up with a
- [Pitfalls in Endodontic Re-treatment on a Painful Maxillary First Molar ](https://www.endomontreal.com/2013/03/02/4487a/) - Untreated calcified and contaminated canal segments Hidden (thus untreated) second calcified root canal to locate and treat Sargenti Paste filling material to remove Completed Root Canal Re-treatment Procedure. Dental Operative Microscope and Root Canal Re-treatment. Case Study Number 448716
- [Sharply Curved Root Canals in Maxillary First Molar ](https://www.endomontreal.com/2008/06/20/sharply-curved-root-canals-in-maxillary-first-molar-case-4/) - Case Study Number 04 Calcified canal system, severe curves and an aberrant location of MB2 made this R.C.T. a rather complex one.
- [Maxillary Second Premolar with Two Very Sclerotic Distinct Canals ](https://www.endomontreal.com/2008/06/13/maxillary-second-premolar-with-two-very-sclerotic-distinct-canals-case-3/) - Root Canal Procedure on Calcified Canals. Case Study Number 03 Another maxillary second premolar with two very sclerotic distinct canals and no surgical microscope in my office at the time. Back then, in such a case, tactile sense was of the utmost importance.
- [Right Angle Exit in Mandibular First Premolar](https://www.endomontreal.com/2008/06/20/case-3/) - Case Study Number 03
- [Previously Underseen Second Mesiovestibular Root Canal (MB2) Located with Surgical Operative Microscope ](https://www.endomontreal.com/2008/06/24/second-mesiovestibular-root-canal-case-4/) - Case Study Number 04 Upper left first molar still symptomatic after root canal therapy. Dental operating microscope allowed us to locate second mesiovestibular canal (Blue arrow) under a 2 mm layer of sclerotic dentine. This canal alone took 2 hours to treat to save this tooth.
- [Root Canal Procedure (Case 411)](https://www.endomontreal.com/2008/06/24/case-411/) - Case Study Number 411
- [Root Canal Treatment, Calcified Root Canal](https://www.endomontreal.com/2008/06/29/case-322/) - Case Study Number 322 Broken instrument in palatal root canal Calcified root canal Broken instrument removed under the high magnification of dental operating microscope (DOM). A No 8 ISO file reaches the apex Completed root canal
- [Calcifications in Upper Left 2nd Molar, Root Canal Procedure on Calcified Canals](https://www.endomontreal.com/2008/06/30/calcifications-in-upper-left-2nd-molar-case-5/) - Root Canal Procedure on Calcified Canals. Case Study Number 05
- [Obliterated Access to Root Canal Entry in Mesiovestibular Root ](https://www.endomontreal.com/2008/07/23/obliterated-access-to-root-canal-entry-in-mesiovestibular-root-case-252416/) - Case Study Number 262416 Denticles in pulpal floor preclude access to mesiovestibular root canal entry. Ultrasound tips and a good microscope have been most helpful to reach this root canal entry.
- [Mesial Root Canals Not Visible on Pre Op. X Ray ](https://www.endomontreal.com/2008/10/23/mesial-root-canals-not-visible-on-pre-op-x-ray-case-390646/) - Calcified Canals. Case Study Number 390646
- [Locating MB2 and DB Orifices with Dental Operative Microscope on Calcified Canals in a Maxillary First Molar](https://www.endomontreal.com/2011/02/04/434426/) - Case Study Number 434426 Patient was refered to us to locate MB2 and DB canal entries with the help of a dental operative microscope. Calcifications had to be removed with ultrasonic diamond coated tips from the pulpal chamber floor in order to expose those canal entries.
- [Root Canal Treatment on a Mandibular Premolar with a Completely Mineralised Root Canal in its Apical Third.](https://www.endomontreal.com/2011/04/21/root-canal-treatment-on-a-mineralized-mandibular-premolar-in-its-apical-third-case-number-419134/) - Case Study Number 419134 Phoenix abscess, hypercementosis, completely mineralised apical third of root canal (calcified canal), mobility WNL. A time and RC PrepTM consuming case. Patient was having a severe gag, X rays were difficult to take.
- [Carl Zeiss Opmi PROergo Microscope to Locate Root Canal Entries with Calcified Root Canals](https://www.endomontreal.com/2012/08/18/513546/) - Root Canal Procedure on Calcified Canals. Case Study Number 513546 First preoperative X ray dental image displays a previously started root canal. This tooth was referred by a clinician who could not locate the four calcified canal entries. Careful removal of calcification
- [Was that First Maxillary Molar Restorable? A 7 years Post Operative Outcome](https://www.endomontreal.com/2012/05/31/357016/) - Case Study Number 357016 Implant versus natural tooth Both implants and root canals have similar success rates (above 90%) so the remaining concerns are periodontal status and tooth restorability. If it not restorable, or if bone loss is to important, then prognosis is bad and tooth should be extracted. In that case implant
- [An Intricate Root Canal Retreatment Procedure on a Calcified Second Mandibular Molar Allowed for this Tooth to Be Preserved for the Last 20 years ](https://www.endomontreal.com/2013/01/04/49747/) - Endodontic procedure case study number 49747 A large post removal and root canal retreatment procedure on a calcified tooth, followed by a casted post and crown performed in our clinic back in 1993. 20 years later, tooth still can withstand occlusal forces despite a huge post replacement in distal root, it is still asymptomatic and functionnal.
- [Spartan Ultrasonic Tips and OPMI PROergo Dental Microscope Versus SX Broken File in Disto Vestibular Root Canal ](https://www.endomontreal.com/2013/01/27/530346/) - MicroEndodontic. Case Study Number 530346 Insertion of a rotating SX file into calcified canal led to instrument breakage because its brittle tip fitted too snuggly into the narrow funnel. Referring dentist wanted us to retrieve that broken instrument in distal
- [This Patient Chose Orthograde Endodontic Revision Procedure on his Mandibular Premolar Instead of Extraction and a Dental Implant ](https://www.endomontreal.com/2013/06/07/endodontic-revision-implying-a-post-removal-on-mandibular-premolar/) - Because of the huge post cemented within its root canal, the endodontic revision procedure to save her tooth seemed to be too difficult or too risky for the former practitioner to perform, consequently, patient has been offered a surgery to extract this infected and painful mandibular premolar and to replace it by a dental implant. But
- [Endo Retreatment with Severe Curves Lower Left Molar](https://www.endomontreal.com/2008/06/19/endo-retreatment-with-severe-curves-lower-left-molar/)
- [Canal Curvature with an 'S' form, Root Canal Treatment](https://www.endomontreal.com/2008/06/24/case-338/) - Case Study Number 338
- ['S' Shape Canals in Second Lower Right Molar ](https://www.endomontreal.com/2008/07/15/s-shape-canals-in-second-lower-right-molar-case-434347/) - Case Study Number 434347 Radiografia preoperatoria en el que se observan las raices de un segundo molar inferior (mandibular) dilaceradas hacia distal, haciendonos poner mas atencion al tratamiento a realizar debido a la curvatura en "S", realizando el procedimiento nos damos cuenta que los dos canales radiculares presentaban curvatura en "S",los cuales se alcanzan a
- [An 'S' shape root canal procedure in a second maxillary premolar ](https://www.endomontreal.com/2008/11/24/s-shape-root-canal-in-second-maxillary-premola-case-438615/) - Case study number 438615
- ['S' Shape Canal in Mandibular Second Premolar ](https://www.endomontreal.com/2008/11/26/s-shape-canal-in-mandibular-second-premolar-case-38735/) - Case Study Number 38735
- [‘S’ Shape Canal Configuration in Distovestibular Root ](https://www.endomontreal.com/2008/12/01/s-shape-canal-configuration-in-distovestibular-root-case-38717/) - Case Study Number 38717
- ["S" Shape Root Canal in Mesiovestibular Root](https://www.endomontreal.com/2009/05/27/s-shape-root-canal-in-mesiovestibular-root-case-448446/) - Calcified Canals. Case Study Number 448446
- [Two Sharply "S" Shape Curved Canals in Distal Root Canal ](https://www.endomontreal.com/2009/05/27/two-sharply-s-shape-curved-canals-in-distal-root-canal-case-448936/) - Root canal procedure on calcified canals (Case 448936)
- [Metalift Crown and Bridge Removal System to save an existing bridge. Another success story. ](https://www.endomontreal.com/2011/08/27/2511/) - Case Study Number 497935 Patient has already been treated on an emergency basis for an acute apical periodontitis with an irreversible pulpitis on second mandibular premolar. Access opening through bridge abutment allowed for pulpectomy and calcium hydroxide insertion at a specialist office. A provisional filling sealed the opening on occlusal. Still, as it happens often, huge
- [Second Mandibular Molar with Interconnecting "S" Form Mesial Canals](https://www.endomontreal.com/2010/12/10/91737/) - Case Study Number 91737 Radiografia preoperatoria de un segundo molar inferior(mandibular), caso un poco complejo debido a la morfologia radicular propia de este caso en el podemos observar un canal radicular en "S", pero despues de haber realizado la instrumentacion nos damos cuenta que la raiz mesial presenta dos conductos que se intercomunican entre si, despegandose
- [Second Maxillary Molar Endo and Calcifications  ](https://www.endomontreal.com/2011/05/18/63727/) - Case Study Number 63727
- [Root Canal System with an "S" Form on a Second Mandibular Molar and Endodontic Therapy](https://www.endomontreal.com/2011/06/10/6937/) - Case Study Number 6937
- [Preparation and Obturation of Canal Presenting an Extreme Curvature in Mesiovestibular Root Canal ](https://www.endomontreal.com/2008/05/03/extreme-curvature-in-mesiovestibular-root-canal-case-328426/) - Endodontic Procedure. Case Study Number 328426 Calcifications, severe curve and anastomosis of MB and MB2
- [Right Angle Root Canal Exit Lower Right 2nd Molar ](https://www.endomontreal.com/2008/06/30/right-angle-root-canal-exit-lower-right-2-nd-molar-case-403/) - Case Study Number 403
- [Calcifications Upper Right Molar Root Canals ](https://www.endomontreal.com/2008/06/30/calcifications-upper-right-molar-root-canals-case-327/) - A right angle exit in palatal root canal takes intensive extra labor work. Case Study Number 327
- [Lower Left 2nd Molar ](https://www.endomontreal.com/2008/06/30/lower-left-2nd-molar-case-26/) - Third film is a 3 months post operative X ray film Case Study Number 26
- [Right Angle Exit in Distovestibular Root Canal ](https://www.endomontreal.com/2008/06/30/right-angle-exit-in-distovestibular-root-canal-case-22/) - Case Study Number 22
- [Right Angle Exit in Distal Root Canal](https://www.endomontreal.com/2008/06/30/right-angle-exit-in-distal-root-canal-case-19/) - Case Study Number 19
- [Sharp Curve Toward Mesial in 2nd Upper Left Premolar Root Canal ](https://www.endomontreal.com/2008/06/30/sharp-curve-toward-mesial-in-2nd-upper-left-premolar-root-canal-case-18/) - Case Study Number 18
- [Third Lower Right Molar with Severely Curved Root Canal ](https://www.endomontreal.com/2008/06/30/third-lower-right-molar-with-severely-curved-root-canal-case-16/) - Case Study Number 16
- [Very Sharply Curved Canals in Lower Left Second Molar ](https://www.endomontreal.com/2008/09/04/very-sharply-curved-canals-in-lower-left-second-molar-case-20137/) - Case Study Number 20137
- [90 Degrees Root Canal Curvature in Mesiovestibular Root Canals](https://www.endomontreal.com/2009/01/26/90-degrees-root-canal-curvature-in-mesiovestibular-root-canals-case-32846/) - Case Study Number 32846 Numerous denticles in pulp chamber to remove prior to cleaning and shaping of root canal system. This was done with a surgical operative microscope.
- [A Right Angle Exit in Distal Root of a Lower Left Molar ](https://www.endomontreal.com/2009/01/28/a-right-angle-exit-in-distal-root-of-a-lower-left-molar-case-1a/)
- [A "Phantom Root" (Radix Entomolaris or Radix Molar) with a 90 Degree Canal Curvature ](https://www.endomontreal.com/2009/05/20/a-phantom-root-with-a-90-degree-curvature-case-124746/) - Case Study Number 124746 En la primera radiografia podemos apreciar una obturacion en contacto intimo con la camara pulpar ocasionando dolor intenso al paciente, Realizando el tratamiento nos damos cuenta que estamos en presencia de un conducto radicular a 90 grados, y por tanto la dificultad de acceder al conducto y hacer el tratamiento sin
- [Right Angle Exit in Mandibular First Premolar](https://www.endomontreal.com/2009/07/04/right-angle-exit-in-mandibular-first-premolar/) - Canal is no longer visible in last apical 2/3 in preoperative Xray film. Post operative X Ray dental film reveals an extreme angle curvature in the canal. A provisional "Richmond style crown" was made immediately after root canal completion.
- [Denticles in Pulp Chamber and Calcifications in Distal Root Canal](https://www.endomontreal.com/2008/06/16/denticles-in-pulp-chamber-and-calcifications-in-distal-root-canal-case-401/) - Case Study Number 401
- [Root Canal Treatment on Extremely Long Roots](https://www.endomontreal.com/2008/06/16/extremely-long-roots-endo-case-case-1/) - Case Study Number 01 33mm long mesial canals in a lower left molar,
- [Root Canal Treatment on Very Long Teeth](https://www.endomontreal.com/2008/06/24/case-407/)
- [Large Zip Bypass in Mesial Canals](https://www.endomontreal.com/2008/07/08/large-zip-bypass-in-mesial-canals-case-9/) - Lower Left First Molar. Case Study Number 9
- [An Intricate Vertucci's Type V Canal Configuration to Treat in Distal Root](https://www.endomontreal.com/2008/05/03/another-tricky-vertuccis-type-v-canal-configuration-in-distal-root451/) - Root Canal Procedure. Case Study Number 451 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in 1984 on a 100 mandibular molars sample, the type V configuration
- [Vertucci's Type V Canal Configuration in Lower Premolar ](https://www.endomontreal.com/2008/05/03/vertuccis-type-v-canal-configuration-in-lower-premolar-case-041340/) - An Intricate Root Canal Procedure. Case Study Number 041340 This patient regular dentist refused to put a post and a crown on this lower right second mandibular premolar judging this previous root canal treatment a bit short (more than 2mm from the apex) and convinced her patient for a root canal retreatment. After retreatment which implied a large
- [Root Canal Treatment ](https://www.endomontreal.com/2008/05/03/419025/) - Case Study Number 419025 Calcifications and split canal configuration in last apical 1/3 of second upper left premolar root canal. (not shown on X ray). This right angle lateral canal sure is a lucky filling.
- [Mineral Trioxyde Agregate Plugs in a Type V Canal Configuration](https://www.endomontreal.com/2008/06/04/mineral-trioxyde-agregate-plugs-in-a-type-v-canal-configuration-case-431611/) - Case Study Number 431611
- [Root Canal Retreatment on a Vertucci's type V Canal Configuration](https://www.endomontreal.com/2008/06/07/case-418/) - Case Study Number 418 A tricky post removal and a previously omitted disto-lingual canal entry localised and treated with the help of a microscope (20X magnification). Ca(OH)2 was left in 4 canals for 10 days prior to final obturation. (Pulp Canal Sealer and lateral and vertical Gutta Percha condensation). Previous Zip in mesio-vestibular canal could
- [Key Tooth to Save for Maxillary Partial Denture Retention](https://www.endomontreal.com/2008/06/13/key-tooth-to-save-for-maxillary-partial-denture-retention-case-332/) - Case Study Number 332 Symptomatic key tooth to save for maxillary partial denture retention in an elderly patient. Canal calcifications, curved canals. Last post op shows a difficult casted post to make and fit for final cementation.
- [Apical Delta and Sharp Root Canal Curve R.C.T. ](https://www.endomontreal.com/2008/06/24/case-405/) - An intricate root canal procedure. Case study number 405 A Vertucci type V pulp space configuration (also called apical delta) can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in 1984 on a 100
- [Broken Instrument Retrieval in Buccal and in Lingual Canal](https://www.endomontreal.com/2008/06/30/broken-instrument-retrieval-in-buccal-and-in-lingual-canal-case-318/) - Case Study Number 318 Endodontic retreatment on lower right first premolar (Vertucci's Type V canal configuration) Pre operative X ray film shows: 1- First separated instrument in lingual canal 2-Second separated instrument in vestibular canal Second X ray film (post operative from first session) shows the other fragment yet to be removed with the help
- [Vertucci's Type V Canal Configuration](https://www.endomontreal.com/2008/07/08/vertuccis-type-v-canal-configuration-case-426/) - Case Study Number 426 A type V canal configuration in palatal canal
- [Vertucci Type V Pulp Space Configuration in Maxillary Second Premolar](https://www.endomontreal.com/2008/11/18/vertucci-type-v-pulp-space-configuration-in-maxillary-second-premolar-case-439915/) - Case Study Number 439915 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci's study in 1984 on 200 maxillary second premolars, in 75% of the cases, a second maxillary premolar will
- ['S' Shape Canal with a Vertucci's Type V Configuration in Distal Root ](https://www.endomontreal.com/2008/09/04/s-shape-canal-with-a-vertuccis-type-v-configuration-in-distal-root-case-49736/) - An Intricate Root Canal Procedure. Case Study Number 49736 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in 1984 on a 100 mandibular molars sample, the
- [Cleaning, Shaping and Filling of a Canal Subdivision in the Apical Third of Distal Root Canal ](https://www.endomontreal.com/2008/10/15/cleaning-shaping-and-filling-of-a-canal-subdivision-in-the-apical-third-of-distal-root-canal-case-125546/) - An intricate root canal procedure on a mandibular first molar distal root canal. Case Study Number 125546. A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in
- [Vertucci’s Type V Configuration in Vestibular Root Canal in Maxillary Second Molar](https://www.endomontreal.com/2010/10/14/vertuccis-type-v-configuration-in-vestibular-root-canal-in-maxillary-second-molar-case-11917/) - Root canal apical delta could be observed under high magnification during the endodontic procedure. Case Study Number 11917. A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study
- [Cleaning, Shaping and Filling of a Canal Subdivision in the Apical Third of Distal Root Canal ](https://www.endomontreal.com/2009/01/26/cleaning-shaping-and-filling-of-a-canal-subdivision-in-the-apical-third-of-distal-root-canal-case-107936/) - Case Study Number 107936 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in 1984 on a 100 mandibular molars sample, the type V configuration in distal root,
- [Vertucci Type V Pulp Space Configuration in Mandibular Mesiovestibular Root Canal ](https://www.endomontreal.com/2009/02/03/vertucci-type-v-pulp-space-configuration-in-mandibular-mesiovestibular-root-canal-case-442546/) - Case Study Number 442546
- [Vertucci’s Type V Configuration in Disto Vestibular Root Canal in Maxillary Molar ](https://www.endomontreal.com/2009/08/26/vertuccis-type-v-configuration-in-disto-vestibular-root-canal-in-maxillary-molar-446826/) - Case Study Number 446826 MB1, MB2 and a very rare type V configuration in disto vestibular root canal.
- [Root Canal Treatment on a Tooth Presenting With a Rare Anatomical Variation](https://www.endomontreal.com/2013/12/09/root-canal-treatment-on-a-tooth-with-a-rare-anatomical-variation/) - A painful tooth with a rare anatomical variation must be treated with a root canal therapy in order to be preserved. This is a very difficult procedure to perform
- [Calcifications and Second Mesiovestibular to Deal ](https://www.endomontreal.com/2008/05/03/019710/) - Case Study Number 019710 A very nice anastomosis of MB and MB2 merging to create this exquisite shape in an angulated X Ray film.
- [Interconnecting MB and D Canals in 2nd Lower Left Molar](https://www.endomontreal.com/2008/06/30/interconnecting-mb-and-d-canals-in-2nd-lower-left-molar-case-421/) - Case Study Number 421 Interconnecting MB and D canals with two distinct portals of exit and very sharply curved canals.
- [Vertucci's Type V Cleaning Shaping and Filling](https://www.endomontreal.com/2008/07/10/vertuccis-type-v-cleaning-shaping-and-filling-case-119711/) - An Intricate Root Canal Procedure. Case study number 119711 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in
- [Lower Left Second Molar Vertucci's Type V Canal Configuration ](https://www.endomontreal.com/2008/06/14/lower-left-second-molar-vertuccis-type-v-canal-configuration-case-417/) - Intricate Endodontic Procedure. Case Study Number 417 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in 1984 on a 100 mandibular molars sample, the type V configuration
- [Endodontic Revision on First Mandibular Molar ](https://www.endomontreal.com/2011/03/10/485946/) - Case study number 485946 Symptomatic mandibular molar, patient can't chew on that side. Referred to us for endodontic revision. First appointment intervention steps: Coronal-radicular access (access through PFM crown, access through coronal build up) taking great care not to perforate the previously weakened pulpal floor, gutta percha removal, locating DB, regaining patency in calcified distal
- [Adherent Pulpstones in a Phantom Rooted Mandibular First Molar (Radix Entomolaris) and the Usefulness of a Dental Operative Microscope (D.O.M.)](https://www.endomontreal.com/2011/07/08/186336/) - Case Study Number 186336 A few days ago we were confronted to this three rooted mandibular first molar (Radix Molar or Radix Entomolaris), a very rare anatomic variation where a a third supernumerary root is located distolingually in mandibular molars. Tremendous amount of calcifications (calcified canals) and a limited opening of the patients
- [Radix Entomolaris Presenting  a Fifth Canal (Accessory Canal) Extending from the Pulp Chamber to the Furcation ](https://www.endomontreal.com/2011/09/08/radix-entomolaris-presenting-a-an-accessory-canal-that-extends-from-the-pulp-chamber-to-the-furcation493847/) - Microendodontic. Case Study Number 493847 Key words: Root canal anatomy, anatomical variation of teeth, radix entomolaris The anatomy of the root canal system directly affects the success of the root canal treatment. This postpresents a case report of a mandibular second molar with five canals and five different apical foramina. Theintraoral clinical examination revealed a
- [Radix Entomolaris, Calcified Canals and the Usefulness of a Dental Operative Microscope (D.O.M.)](https://www.endomontreal.com/2011/12/15/5051/) - Endodontic. Case Study Number 505146 A peculiar anatomical variation can be noticed on this mandibular first molar. What appeared to look like hypercementosis on apical aspect of distal root could in fact be a supernumerary root fused to the distal one (Radix Entomolaris). Careful removal of dentine with ultrasonic tips under high magnification of
- [Extreme Endo on Calcified Canals to Preserve Two Teeth which May Otherwise Be Lost ](https://www.endomontreal.com/2008/05/03/extreme-endo-to-preserve-two-teeth-wich-may-otherwise-be-lost-case-102334/) - Root Canal Procedure on Calcified Canals. Endodontic. Case Study Number 102334 The patient was told to remove both lower left symptomatic premolars and replace those by implant supported crowns. At
- [Canals Not Visible on Pre Operative X Ray Film of a Second Maxillary Molar ](https://www.endomontreal.com/2008/05/03/canals-not-visible-on-pre-operative-x-ray-film-of-a-second-maxillary-molar-case-429327/) - Case Study Number 429327 Patient referred by a colleague for root canal therapy on a maxillary second molar. Key tooth to save for a planned fixed bridge. History of throbbing pain in the last days. Keeps awake at night. Diagnosis: irreversible pulpitis. Findings: deciduous restoration, caries, severe pulp calcification. Problem to solve: locating and negociating
- [Extreme Canal Stenosis (Case 442192)](https://www.endomontreal.com/2008/06/04/extreme-canal-stenosis-case-442192/) - Extreme canal stenosis by calcification on lower right first premolar. DOM assisted root canal treatment in such a case is a must!
- [Complete Calcification of Upper Incisor to Treat and Save from Extraction ](https://www.endomontreal.com/2008/06/13/complete-calcification-of-upper-incisor-to-treat-and-save-from-extraction-case-303/) - Case Study Number 303
- [Completely Calcified Canal on Maxillary Incisor to Treat ](https://www.endomontreal.com/2008/06/13/complete-calcification-of-upper-incisor-to-treat-and-save-from-extraction-case-302/) - Root Canal Procedure on Calcified Canal. Endodontic Microscope. Case Study Number 302
- [Complete Calcification (Calcified Canal) of Lower Incisor to Treat and Save from Extraction](https://www.endomontreal.com/2008/06/13/complete-calcification-of-lower-incisor-to-treat-and-save-from-extraction-case/) - Root Canal Procedure on Calcified Canal with Internal Resorption.
- [Maxillary First Premolar with Two Very Sclerotic Distinct Canals (Case 4)](https://www.endomontreal.com/2008/06/13/maxillary-first-premolar-with-two-very-sclerotic-distinct-canals-case-4/)
- [Extreme Root Canal Calcification of a Maxillary Canine (Case MSJ2)](https://www.endomontreal.com/2008/06/13/extreme-root-canal-calcification-of-a-maxillary-canine-case-2/) - Pre operative x ray dental film shows a maxillary upper left canine with no visible root canal. Immediate post operative x ray dental film shows completed case. Canal entry has been localised with a microscope. (magnification 25X) 1 year post operative x ray dental film shows perfect healing of apical bone radiolucency.
- [Mandibular Molar with Extreme Root Canal Calcification to Save from Implant Therapy](https://www.endomontreal.com/2008/06/13/mandibular-molar-with-extreme-root-canal-calcification-to-save-from-implant-therapy/)
- [Root Canal Procedure on an Extremely Calcified Root Canal on a Maxillary Incisor ](https://www.endomontreal.com/2008/06/13/case-1-extreme-root-canal-calcification-of-a-maxillary-incisor-case-2/) - Root Canal Procedure on Calcified Canal. Endodontic Microscope. Case Study Number 2
- [Maxillary Left Second Premolar with Complete Canal Stenosis (Calcified Canals)](https://www.endomontreal.com/2008/06/24/upper-left-second-premolar-with-complete-canal-stenosis-case-416/) - Root Canal Procedure on Calcified Canals. Endodontic Microscope. Case Study Number416
- [Fiberglass Reinforced Composite Posts Removal in Both Maxillary Premolar to Allow Endodontic Retreatment ](https://www.endomontreal.com/2008/06/29/case-1-2/) - Root Canal Procedure. Case Study Number 1 First premolar was having an under fill in its distovestibular root canal. Meaning that one small diameter gutta percha point was floating in a canal with a much wider diameter. This available space allowed for a wonderful bacteria colonization which made the patient experiencing an A.A.A. Second premolar
- [Dealing with a Crowned Maxillary Molar and Extreme Calcifications in it's Root Canal System](https://www.endomontreal.com/2008/07/21/282816/) - Endodontic Procedure Under Dental Operative Microscope. Case Study Number 282816 Surgical operating microscope assisted root canal treatment through a crown: Preoperative X ray image shows a complete root canal system obliteration. Dystrophic calcifications in the pulp chamber were almost completely obliterating the three canal entries. Crown also made endodontic therapy very challenging because of coronal
- [Extreme Canals Stenosis in First Maxillary Molar VS Karl Zeiss OPMI PRO Ergo Dental Operative Microscope (D.O.M)](https://www.endomontreal.com/2009/01/26/extreme-canals-stenosis-in-first-maxillary-molar-case-107926/) - Calcified Canals. Case Study Number 107926 Symptomatic first maxillary molar, canals not visible on pre operative X ray dental film. Dental operative microscope assisted root canal.
- [Root Canal and Pulp Chamber Not Visible on Pre Operative X Ray of Maxillary Lateral Incisor (Calcified Canals)](https://www.endomontreal.com/2009/06/03/219222/) - Root Canal Procedure on Calcified Canals. Case Study Number 219222
- [Dental Operative Microscope Assisted Endodontic Treatment of Sclerotic Canals (Calcified Canals)](https://www.endomontreal.com/2009/09/02/endodontic-treatment-of-sclerotic-canals-in-first-left-maxillary-premolar-case-91724/) - Root Canal Procedure on Calcified Canals. Case Study Number 91724 Symptomatic first maxillary premolar with deciduous extensive composite restoration (MODBL). This tooth needs a pre prosthetic endodontic treatment. Dental operative microscope assisted localization of root canal entries. Ultrasonic tips, chelating agent and quite a few ISO K files were also needed. These teeth, when symptomatic
- [Endodontic Treatment on Mandibular Molar with Complete Stenosis of Mesial Root Canals (Calcified Canals)](https://www.endomontreal.com/2009/10/08/119036/) - Calcified Canals. Root Canal Procedure. Case Study Number 119036 Pre operative film shows a large bony defect reminding us the alleged pathognomonic "J" type lesion. Canals are not visible in mesial root. An impressive soft tissues swelling of adjacent vestibular area was also noted. Endo treatment finished on the
- [ First Maxillary Molar with Complete Calcification of its Canal System Preserved with a Microscope Assisted Root Canal (Case 471726) ](https://www.endomontreal.com/2010/08/23/471726/) - Patient is experiencing severe pain on upper left side and is seen on an emergency basis. The first molar is having a necrotic pulp and an acute periapical inflamation. Tooth is having a complete stenosis of canal system. Patient is taking per os bisphosphonate and does not want to remove the tooth, thus extraction with
- [Mesial Calcified Canals Entries Location Under High Magnification](https://www.endomontreal.com/2010/12/15/483136/) - An intricate root canal procedure, because this pre operative condition involves dealing with complete canal stenosis caused by dystrophic calcifications. Case Study Number 483136 Once located, with the help of a dental operative microscope (Opmi Proergo from Carl Zeiss), mesial canals have been shaped and cleaned with the Pro Taper system (Maillefer) and lots of
- [OPMI PROergo Dental Operative Microscope VS Completely Calcified Canals ](https://www.endomontreal.com/2011/05/04/opmi-proego-dental-operative-microscope-vs-completely-calcified-root-canals/) - Case Study Number 465016 Patient has been referred to to us in order to complete a previously started root canal treatment on completely calcified root canal system. Pulp chamber is obliterated with embedded pulpstones, root canals are not visible on preoperative X ray dental film, these are calcified canals. Patient is given full knowledge of
- [OPMI PROergo VS Extreme Canal System Calcifications ](https://www.endomontreal.com/2011/05/26/opmi-proergo-vs-extreme-canal-system-calcifications/) - Root Canal Procedure on Calcified Canal
- [OPMI PROergo Dental Operative Microscope VS Completely Calcified Canals ](https://www.endomontreal.com/2011/06/17/403616/) - Calcified Canals. Case Study Number 403616 It is not because you can't see it that it is not there. This is total pulp space obliteration!
- [Endodontic Treatment on Mandibular Molar with Calcified Canals and a "J" Type Lesion, a Five Years Follow Up](https://www.endomontreal.com/2012/01/19/156037/) - Root Canal Procedure with Surgical Operative Microscope. MicroEndodontic. Case Study Number 156037. Pre operative film shows a large bony defect reminding us the alleged pathognomonic "J" type lesion. Still, there was no deep and narrow pocket probing. Root canals are not visible neither in mesial or distal root (calcified canals) First appointment
- [Zeiss Opmi Pro Ergo Dental Operative Microscope VS Complete Stenosis of Root Canal System. Pushing Back the Limits  ](https://www.endomontreal.com/2012/02/24/506846/) - Microendodontic. Calcified canals. Case Study Number 506846 Patient referred for endodontic treatment on this mandibular first molar. Coronal-radicular access was already done but canal entries are embedded in a mass of calcified dentine and could not be found. Preoperative X ray dental film shows a complete mineralization of both mesial and distal canals coronal
- [Pushing Back the Limit to Save Teeth with Opmi Proergo Dental Operative Microscope. Dental Operating Microscope Assisted Root Canal Procedure on a Completely Stenosed Canal System.  ](https://www.endomontreal.com/2012/04/06/1441/) - MicroEndodontic. Case Study Number 449947 Pulp chamber and root canals are not visible on pre operating X Ray of second mandibular molar. Diffuse calcifications preclude easy canal entries location. Despite its highly calcified canals, this tooth must not be extracted, it can be saved with a dental operating microscope assisted root canal procedure. Progressive abrasion
- [Carl Zeiss OPMI PROergo Dental Microscope Root Canal Procedure VS Completely Calcified Canal](https://www.endomontreal.com/2012/09/07/514722-4/) - MicroEndodontics. Case Study Number 514722 Pulp canal obliteration: an endodontic diagnosis and treatment challenge P.S. McCabe & P.M.H. Dummer International Endodontic Journal 2011
- [Opmi Proergo Dental Operative Microscope, a Cutting Edge Technology to Save a Key Tooth. Overcoming an Against All Odds Clinical Pre Operative Condition. ](https://www.endomontreal.com/2013/03/13/506712/) - Dental operating microscope assisted root canal procedure on a completely stenosed canal system (calcified canal). Endodontist. Case Study Number 506712 In order to be preserved and used as an abutment for a fixed bridge replacement, this tooth must have a casted post space preparation in its coronal third. Thus apical endodontic surgery cannot be considered as
- [Obliterated Pulp Space VS Dental Operative Microscope  ](https://www.endomontreal.com/2013/05/02/obliterated-pulp-space-vs-dental-operative-microscope/) - First X Ray image : Pulp space is not visible on tooth number 11 Second X Ray image : Displays a number 06 ISO stainless Steel file from Mani at canal entry gate, this my first catch. Locating a very narrow canal entry is the first challenge Third X Ray image : Shows a number 06 file in
- [Key Tooth Abutment to Preserve in Order to Save a 5000 $ Fixed Bridge From a Trash Can ](https://www.endomontreal.com/2008/06/13/key-tooth-abutment-to-save-to-save-a-5000-fixed-bridge-from-a-trash-can-case-333/) - Root Canal Procedure on Calcified Canals. Case Study Number 333
- [Root Canal Treatment (Case 328)](https://www.endomontreal.com/2008/06/16/case-428/) - 30 mm long palatal canal (Legend #1) and another MB2 wich is not merging with MB1.
- [MB1 and MB2 with Two Distinct Portals of Exit, Severe Curve (Case 314)](https://www.endomontreal.com/2008/06/19/mb1-and-mb2-with-two-distinct-portals-of-exit-severe-curve-case-314/) - Este es un tratamiento radicular complicado debido a la dificultad para acceder al conducto, ademas de la curvatura que presenta la raiz en su tercio radicular que realizando una mala instrumentacion podriamos ocasionar una perforacion lo que pondria en riesgo el exito del tratamiento (endodoncia). En la ultima radiografia tomada un ano despues podemos observar
- [Root Canal Treatment (Case 11)](https://www.endomontreal.com/2008/06/20/case-11/) - Study Case Number 11
- [Calcified Canals and Endodontic Microscope](https://www.endomontreal.com/2008/06/24/case-412-2/) - Root Canal Procedure on Calcified Canals. Case Study Number 412
- [Calcified Canals and Root Canal Treatment](https://www.endomontreal.com/2008/06/24/calcified-mesiovestibulars-rct-case-414/) - Root Canal Procedure on Calcified Canals. Endodontic Microscope. Case Study Number 414 Second mesiobuccal canal entry (MB-2) in this upper molar was blocked by a 2mm thickness of sclerotic dentine. This canal alone took more than one hour to locate under a dental operating microscope and treat. Missing this one canal with its own portal
- [Root Canal Treatment (Case 402116)](https://www.endomontreal.com/2008/06/27/case-402116/) - Case Study Number 402116 Primer molar superior(maxilar), en el que se utilizaron limas especiales para poder dar la curvatura ideal al conducto ya que presentaba una dilaceracion(curva)marcada hacia distal. Despues de realizar el tratamiento, se alcanza a observar claramente la curvatura del canal radicular mesial.
- [Intricate Endodontic Procedure of Both an Apical Delta in Palatal Root Canal and Three Mesiovestibular Root Canals with an "S" Form](https://www.endomontreal.com/2008/06/24/another-apical-delta-in-palatal-root-canal-case-334/) - Extreme Endodontic Procedure. Case Study Number 334 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in
- [Second Mesiovestibular and Calcifications (Case 10)](https://www.endomontreal.com/2008/06/30/case-10/) - Case Study Number 10
- [Second Mesio Vestibular Microscope Assisted Root Canal Treatment ](https://www.endomontreal.com/2008/07/10/second-mesio-vestibular-microscope-assisted-root-canal-treatment/) - Case Study Number 297716
- [Microscope Assisted Extreme Calcification Removal (Case 437026)](https://www.endomontreal.com/2008/09/17/microscope-assisted-extreme-calcification-removal-case-437026/) - Case Study Number 437026 Only high magnification (20X and up) can help in locating all four canals entries
- [Extreme Root Canal Treatment on Second Maxillary Molar](https://www.endomontreal.com/2008/10/08/extreme-root-canal-treatment-case-437627/) - Endodontist. Case Study Number 437627 Endo with difficult access due to tooth position in the arch, calcified, very long (24 mm) and very sharply curved MB and MB2 on second maxillary left molar.
- [Root Canal Procedure on Calcified Canals, Striving for Second Mesio Vestibular Root Canal Treatment ](https://www.endomontreal.com/2010/07/18/striving-for-second-mesio-vestibular-root-canal-treatment-case-413/) - Root Canal Procedure on Calcified Canals. Case Study Number 413
- [OPMI PROergo Dental Operative Microscope VS Completely Calcified Canals](https://www.endomontreal.com/2011/06/24/482026/) - Case Study Number 482026 Because of an extreme canal stenosis by calcification and because of its obliterated pulp chamber by adherent pulpstones, this first maxillary molar root canal system is not visible on preoperative X ray dental film. Patient is given full knowledge of the possible risks and benefits of such a complex
- [A Root Canal Retreatment Involving a Crown and a Post Removal Alowed for This Painful Tooth to be Preserved](https://www.endomontreal.com/2012/04/19/505026/) - An endodontist case report. MicroEndodontic. Case Study Number 505026 Twenty five years old patient presenting with an abscessed maxillary molar. Diagnosis: Persisting disease after root canal treatment. Etiology: untreated second mesio vestibular root canal (MB2). Two appointments were required to preserve that tooth: First appointment: Crown and post removals plus root canal filling retrieval, MB2
- [Root Canal Revision Procedure. Severely Dilacerated Second Mesiovestibular Root Canal. Its Location Under Magnification and Treatment. ](https://www.endomontreal.com/2012/07/12/156026/) - Necrosis in underseen second mesiovestibular (MV2) and periapical parodontitis. Tooth is symptomatic. MV2 location and first instrument in severely dilacerated root canal MV2 with last instrument reaching the constriction Final MV2 root canal obturation with gutta percha an Pulp Canal Sealer. Coronal build up "repair" in composite mesial to the existing metal post.Tooth is not
- [Striving for Second Mesiovestibular (MB2) on Maxillary First Molar Mesiovestibular Root](https://www.endomontreal.com/2012/11/01/526316/) - Dental Microscope Root Canal Procedure. Case Study Number 526316
- [Study on Options Available to a Patient in Case of a Failed Root Canal Treatment](https://www.endomontreal.com/2012/12/16/pdf/) - Read Case Study here!
- [OPMI PROergo Microscope Versus a Very Long and Calcified Tooth Root Canal Retreatment ](https://www.endomontreal.com/2013/02/21/526826/) - Root Canal Procedure Retreatment. Case Study Number 526826 Calcified second mesiovestibular root canal entry located with the help of Dental Operative Microscope OPMI PROergo from Carl Zeiss.
- [Without a Dental Operative Microscope this Completely Calcified Tooth Could Not Have Been Preserved](https://www.endomontreal.com/2013/04/05/without-a-dental-operative-microscope-this-completely-calcified-tooth-could-not-have-been-preserved/) - MicroEndodontics. Case Study Number 449947 Pulp chamber and root canals are not visible on pre operating X Ray of second mandibular molar. Diffuse calcifications preclude easy canal entries location. Despite its highly calcified root canal system, this tooth must not be extracted, it can be rescued with a dental operating microscope assisted root canal procedure.
- [Huge Pulp Stone Removal Under High Magnification in Order to Preserve a Maxillary Molar](https://www.endomontreal.com/2013/05/11/4795/) - Endodontic Procedure with High Magnification. Case Study Number 479527 Maxillary second left molar presenting with an acute pulpitis. Root canal system preoperative condition: Calcified canals and a huge attached pulp stone obliterating 80% of the pulp chamber
- [A Root Canal Procedure Assessed at a Class 3 Level of Difficulty and Risk (CAE Classification)](https://www.endomontreal.com/2013/06/15/class-3-level-of-difficulty-and-risks-root-canal-procedure/) - "There are many factors that influence the degree of difficulty and risk of root canal treatment. Recognition of these factors prior to the initiation of treatment helps patients and practitioners to understand the complexities that may be involved in individual cases". Standards of practice, Canadian Academy of Endodontics. Risk and difficulty factors listed in this
- [A Painless Root Canal Procedure on a Calcified Tooth. A Difficult and Time Consuming One to Perform](https://www.endomontreal.com/2013/09/08/a-painless-root-canal-procedure-on-a-calcified-tooth-still-a-difficult-and-time-consuming-one-for-the-practitioner/)
- [A Difficult Root Canal Treatment on Calcified Root Canals](https://www.endomontreal.com/2014/04/23/a-difficult-root-canal-treatment-on-calcified-root-canals/) - An intricate endodontic therapy to perform in order to preserve a very painful tooth, patient was taking 3 X 200mg Ibuprofen Pills every 3 hours in order to get through the preceding night. Serous exudate accumulation resulted in mucosa swelling. This type of root canal treatment has a high level of difficulty because
- [A "Pathognomonic" 'J' Type Lesion with no Cracked Tooth (Case 141101)](https://www.endomontreal.com/2008/07/08/a-pathognomonic-j-type-lesion-with-no-cracked-tooth-case-141101/) - This is a case where, based on the X ray image of a "J" type lesion, and on a deep narrow periodontal probing, one could easily think of a cracked tooth. The microscope showed us otherwise. No crack could be found under microscope observation. As shown on those VRFs, slow but complete periradicular tissues regeneration followed
- [An Intricate Root Canal Procedure on a Bayonet Shaped (S shaped) Maxillary First Premolar](https://www.endomontreal.com/2012/11/29/528224/) - Case Study Number 528224
- [Adherent Pulpstones in a Phantom Rooted Mandibular First Molar (Radix Entomolaris) and the Usefulness of a Dental Operative Microscope (D.O.M.)](https://www.endomontreal.com/2012/01/26/500446/) - MicroEndodontics. Case Study Number 500446 A few days ago we were confronted to this three rooted mandibular first molar (Radix Molar or Radix Entomolaris), a rare anatomical variation of teeth, where a third supernumerary root is located distolingually in mandibular molars. Root canal system calcifications and a canal curvature with an "S" form made
- [Extreme Endodontic Procedure to Preserve a Key Tooth. Carl Zeiss Opmi PROergo Microscope to Locate 4 Root Canal Entries with Complete Root Canals Stenosis](https://www.endomontreal.com/2012/03/24/508126/) - MicroEndodontics. Calcified Canals. Case Study Number 508126
- [Extreme Endodontic Procedure to Preserve a Key Tooth. Carl Zeiss Opmi PROergo Microscope to Locate Root Canal Entries with Complete Root Canals Stenosis](https://www.endomontreal.com/2012/03/01/509217/) - Root Canal Procedure on Calcified Canals. Case Study Number 509217
- [Microendodontics is a Microscope Endodontic Procedure to Preserve an Otherwise Untreatable Tooth ](https://www.endomontreal.com/2013/06/05/calcified-key-tooth-preserved-with-microscope-endodontic-procedure/) - ROOT CANAL PROCEDURE CASE STUDY NUMBER: 542917 Tooth number 16 has to be removed, tooth number 17 becomes a key tooth as an abutment for a fixed 17X15 bridge. POST ENDODONTIC PROCEDURE OUTCOME AMALGAM POST AND CORE BUILD UP FINAL RESTORATION:IN THIS CASE, REPLACING MISSING TOOTH WITH A FIXED BRIDGE IS A VALID ALTERNATIVE TO DENTAL IMPLANT
- [Root Canal Therapy on a Calcified Root Canal With an S  Form Curvature (Case 525214)](https://www.endomontreal.com/2013/10/18/525214/) - Practitioner has to overcome two major procedure concerns in endodontics when treating calcified canals with an S form. These are root canal entries location and cleaning and shaping without instrument separation
- [Relieving Pain With An Intricate Root Canal Treatment on a C Shape Root Canal ](https://www.endomontreal.com/2013/11/01/relieving-pain-with-intricate-root-canal-treatment-on-a-c-shape-root-canal/) - An intricate endodontic therapy to perform in order to preserve a very painful tooth. Root canal system has a difficult to clean ribbonlike C shape
- [A Root Canal Treatment on a Badly Worn Wisdom Tooth, Was it Wise?](https://www.endomontreal.com/2013/11/07/root-canal-procedure-on-a-key-tooth-abutment/) - Preserving his wisdom tooth turned out to be a wise decision because this tooth allowed for a fixed bridge to be installed sparing the need for two dental implant surgeries.
- [An Intricate Root Canal Procedure on a Mineralized Second Maxillary Molar with a Canal Curvature into an "S" Form](https://www.endomontreal.com/2011/10/13/449927/) - Endodontic Procedure. Case Study Number 449927 To treat such a tooth in endodontics we needed to deal with: Difficult access Long tooth (24 mm) Calcified canals (root canal system with dystrophic calcifications) to locate, shape clean and fill Second mesiovestibular (Mb2) to strive for with the help of a dental operative microscope Canal
- [OPMI PROergo Dental Operative Microscope VS Pulp Fibrosis in a Severely Curved Canal System](https://www.endomontreal.com/2011/07/02/63724/) - Case Study Number 63724
- [Endodontic Procedure on a Severely Curved Distovestibular Root Canal of a Calcified Maxillary Molar](https://www.endomontreal.com/2011/08/12/492626/) - Root Canal Procedure. Case Study Number 492626 Patient is having an AAA with a necrotic pulp, an extensive deciduous restoration and a huge tooh decay on distal aspect of this first maxillary molar (Some of us might think: "you don't have to worry it is dead"). Dystrophic calcifications are obliterating the root canal system and
- [An Intricate Root Canal Procedure on a Severely Curved Root Canal System with Pulp Tissue Fibrosis](https://www.endomontreal.com/2011/10/07/500047/) - MicroEndodontic. Case Study Number 500047 Canal curvatures are a challenge to preparation and can be the origin of many technical complications leading to failure of treatment. Canals that curve in the mesio-distal direction are usually readily detected in radiographic dental films. However, as it is the case here, many canals curve also in the
- [3 Factors that Influence Degree of Difficulty and Risk of this Root Canal Procedure](https://www.endomontreal.com/2013/06/27/case-study-in-endodontics-number-506318/) - Endodontic. Case Study Number 506318 3 Factors that influence degree of difficulty and risk of this root canal procedure: Tooth position in the arch: most posterior tooth Canals presenting with extreme curvatures Canal are so calcified that they are no longer visible on pre operative Xray
- [Two Distinct Right-Angled Root Canals Exits in First Molar Distal Root (Case 455336)](https://www.endomontreal.com/2009/11/18/two-distinct-right-angled-root-canals-exits-in-first-molar-distal-root-case-455336/) - Case Study Number 455336 Irreversible pulpitis, deep carie, deciduous restoration, broken lingual wall. First molar with 4 root canals. Two mesial root canals no longer visible in middle and apical third with a curvature into "C" form. A file number 08 ISO follows a 90 degrees curvature in one of two distal root canals (per op. X
- [Intricate Root Canal Procedure on Root Canals Curvatures with Very Small Radius. ](https://www.endomontreal.com/2011/10/20/498216/) - Endodontist. Root Canal Procedure. Case Study Number 49821617 Note on the post operative Xray dental film, the dilacerated apical curves in both vestibular roots on second maxillary molar and disto vestibular root of first maxillary molar. The values of those root canal curvature radius based on three mathematical points are all below 4 mm,
- [Root Canal Treatment on a Mandibular First Molar Presenting with a Dilacerated Root Canal System](https://www.endomontreal.com/2011/11/11/498946/) - Endodontic. Case Study Number 498946.
- [OPMI PROergo Dental Operative Microscope VS Partially Calcified Root Canal Systems (Case 482036)](https://www.endomontreal.com/2012/04/26/482036/) - Case Study Number 482036.
- [Root Canal Procedure on a Very Long and Calcified Tooth](https://www.endomontreal.com/2013/02/17/532636/) - Root Canal Procedure. Case Study Number 532636. Tooth is 26,5mm long.
- [Root Canal Procedure on Radix Entomolaris Presenting a Severe Dilaceration](https://www.endomontreal.com/2012/06/21/radixentomolaris513236/) - Microscope in Endododontics. Case Study Number 513236. We have been confronted to this three rooted mandibular first molar (Radix Molar or Radix Entomolaris), a rare anatomical variation of teeth, where a third supernumerary root is located distolingually in mandibular molars. Root canal system calcifications and a small radius root canal curvature with an "S" form
- [Root Canal Procedure on a Second Molar Presenting Adherent Pulpstones and a Dilacerated Curve](https://www.endomontreal.com/2012/03/02/29537/) - Root Canal Procedure. Case Study Number 29537.
- [Intricate S Shape Root Canal Procedure on a Calcified Second Mandibular Molar](https://www.endomontreal.com/2013/11/15/s-shape-root-canal-procedure-on-a-calcified-second-mandibular-molar/) - Practitioner has to overcome two major procedure concerns in endodontics when treating calcified canals with an S form. These are root canal entries location and cleaning and shaping without instrument separation
- [Root Canal Procedure on Calcified Wisdom Tooth Presenting With a Severe Root Canal Curvature](https://www.endomontreal.com/2013/10/25/root-canal-procedure-on-calcified-wisdom-tooth-presenting-with-a-severe-root-canal-curvature/) - Factors influencing difficulty of this root canal procedure: Most posterior tooth in the arch, Canals presenting with extreme curvatures, calcified canal
- [Mandibular Second Molar with a 'C' Shape Canal Configuration ](https://www.endomontreal.com/2008/07/07/c-shape-canal-configuration-case-340/) - Case Study Number 340 Pulpitis on a mandibular second molar with a huge bone loss to distal, a rather bad prognosis. Patient wanted to keep her "Hopeless" tooth for as long as possible. Root canal treatment prolonged the tooth lifespan for another 2 years.
- [Zeiss Microscope Assisted Precision Treatment of a ‘C’ Shape Canal Configuration in Lower Left 2nd Molar ](https://www.endomontreal.com/2008/10/21/c-shape-canal-configuration-in-lower-left-canal-configuration-case-402/) - Case Study Number 402. Dental operative microscope was most usefull in order to assess level of cleanliness of this very challenging canal configuration
- [Endodontic Dentistry: Double "C" Shape Distal Canal VS Carl Zeiss OPMI Dental Operative Microscope](https://www.endomontreal.com/2010/09/16/1434/) - Case Study Number 331737 Heated gutta percha was most useful to obtain that so sought after 3D obturation in this mandibular second molar. En esta radiografia podemos observar la dificultad para tener un acceso adecuado al canal radicular en su tercio distal en forma ¨S¨ ; La gutapercha caliente fue mas util para obtener el resultado que
- [Microendodontics with Zeiss OPMI PRO Ergo Operative Microscope: Striving to Find a Pathway to the Apices and to Clean a "C" Shape RC system. ](https://www.endomontreal.com/2011/10/28/319947/) - The name comes from the letter "C" shape appearance of a very large isthmus in the pulp chamber floor when viewed from above. This isthmus or groove is the result of the merging of some or all of the root canals at the cervical area near the pulp chamber floor. Incidence is 2,7% in Caucasian
- [Dealing with Dystrophic Calcification in Mesiovestibular Root Canals  ](https://www.endomontreal.com/2011/02/26/486726/) - Case Study Number 486726 Patient was referred to us with a partial pulpectomy in 3 out of four canals. The case came with a note from referring dentist that MB1 was blocked with a calcification. Patient was in pain and was taking an opioïd analgesic prn
- [Long and Curved Canals in a Second Lower Left Molar (Case 123437)](https://www.endomontreal.com/2008/07/16/long-and-curved-canals-in-a-second-lower-left-molar-case-123437/)
- [Root Canal and Corono Apical Amalgam (Amalgam Post and Core)](https://www.endomontreal.com/2010/07/23/root-canal-and-amalgam-post-and-core-case-431446/) - Case Study Number 431446 Question one: Casted post or amalgam post and core? Endodontic post does not increased the strenght of the remaining tooth substance, on the contrary it weakens it as a result of the additional tooth substance loss due to the post hole drilling. On posterior teeth with enough pulp chamber depth to
- [Very Long Mandibular Molar with Root Canals Not Visible on X Ray Image in Apical Third. ](https://www.endomontreal.com/2011/04/18/very-long-mandibular-molar-with-root-canals-not-visible-on-x-ray-image-in-apical-third-case-number-474446/) - Endodontist. Case Study Number 474446 Deep deciduous restorations have been replaced 4 days ago. Patient has been experiencing severe spontaneous throbbing pain for the last two days. Tooth is presenting an irreversible pulpitis following a restoration replacement. Radiographic examination shows calcifications in apical third of all root canals (calcified canals),
- [A Root Canal Procedure on a Long Tooth Presenting with Severe Root Canal Curvatures](https://www.endomontreal.com/2012/01/10/a-root-canal-procedure-on-a-very-long-tooth-presenting-with-severe-root-canal-curvatures/) - Case Study Number 171516 Nature of pain: Severe pain to cold heat and spontaneous pain Clinical examination: deciduous amalgam restorations, leakage, thickened PDL Radiographic finding: long tooth presenting with severe curvature on buccal root canals Diagnosis: irreversible pulpitis No MB2 could be found under high magnification of dental operative microscope. Shaping and cleaning
- [Root Canal Procedure on a Very Long Tooth Presenting with Calcified Narrow Root Canals](https://www.endomontreal.com/2013/03/27/528746/) - Case Study Number 528746. Tooth is 26mm long.
- [Intricate Root Canal Treatment On a Molar presenting with An S Shape](https://www.endomontreal.com/2014/01/30/intricate-root-canal-treatment-on-a-molar-presenting-with-an-s-shape/)
- [Crossed Canals in Mesial Root Lower Left Molar (Case 4)](https://www.endomontreal.com/2008/07/03/crossed-canals-in-mesial-root-lower-left-molar-case-4/)
- [Crossed Canals in Mesial Root (Case 3)](https://www.endomontreal.com/2008/07/03/crossed-canals-in-mesial-root-case-3/) - Crossed canals in mesial root on lower left second molar. Tooth then restored with a gold inlay. Distal is subjected to minimal occlusal force.
- [Crossed Canals in Second Left Upper Molar (Case 2)](https://www.endomontreal.com/2008/07/03/crossed-canals-in-second-left-upper-molar-case-2/)
- [Root Canal Procedure on a Second Maxillary Premolar Presenting a Vertucci's Type VI Root Canal Configuration](https://www.endomontreal.com/2012/02/03/378415/) - Endodontic Procedure Case Study Number 378415 A Vertucci type VI pulp space configuration can be described as follow: Two canals leaves the pulp chamber, intersect in the body of the root and redivide short of the apex into two separate canals with two distinct foramina (2-1-2). In this per
- [A Vertucci's Type V Canal Configuration on a Second Maxillary Premolar](https://www.endomontreal.com/2011/06/06/473515/) - Case Study Number 473515 OPMI PROergo from Carl Zeiss allowed us to clearly see the apical split. Each branch has been shaped, cleaned and filled with Pulp Canal Sealer and gutta percha using vertical condensation technique.
- [An Endo Retreatment with Four MTA (Mineral Trioxide Aggregate) Apical Plugs Helped in Preserving this Second Mandibular Molar](https://www.endomontreal.com/2011/08/07/397137/) - Case Study Number 397137 Tooth history: First attempt of RCT on this mandibular second molar in 2005 did not eliminate symptoms, a second attempt in 2006 did not turned out to be any better, tooth was still having episodes of severe pain (preoperative X ray dental film taken in January 2007). Patient was told
- [Endodontic Therapy on Maxillary Second Premolar With One Canal Dividing in Apical Third. The Infamous Apical Delta](https://www.endomontreal.com/2011/10/28/2916/) - Endodontist. Case Study of Root Canal Procedure Number 362515 Pecora al. in 1993 reported second maxillary premolars (among 435 studied) to have one root in 90,7%. The typical maxillary second premolar may be considered having only one root with a single canal among the Caucasians (Pitt Ford, 1997). According to
- [Carl Zeiss OPMI PROergo Insured Enough Visual Accuracy to Prevent a Missed Apical Split in a Calcified Mesial Root. ](https://www.endomontreal.com/2012/03/29/197337/) - Endodontist. Case Study Number 197337 The recent addition of dental operative microscope (DOM) to endodontic therapy can allow better visualization and management of the intricate morphology of the root canal system during endodontic procedures through magnification and greatly improved high intensity lighting. Dental Microscope typically magnifies in the 4X to
- [Root Canal Procedure on Root Canal Split in Mid Third of Mandibular Premolar, a Rare Anatomical Variation](https://www.endomontreal.com/2012/07/05/400344/) - Microendodontics. Case Study Number 40034
- [Pitfalls in endodontics: Huge calcifications, Curved canals, Vertucci's type V and Toward Mesial Oriented Portal of Exit](https://www.endomontreal.com/2013/01/18/5037/) - Microendodontics. Case Study Number 503746 A 40 years old male patient presented for an emergency dental examination. Chief complaint: pain and swelling, unable to chew on right side Clinical examination: gum swelling, broken filling, tooth tender to palpation and (gentle) pressure, tooth did not respond to thermal or electric sensitivity test, periodontal probing
- [Uncovered Vertucci's Type V in Distal Root During Endodontic Revision 7 Years Ago Allowed for that Tooth to be Preserved. Thanks to OPMI PROergo Dental Operative Microscope](https://www.endomontreal.com/2013/06/27/uncovered-vertuccistype-v-in-distal-root/) - Dental operative microscope root canal procedure (Microendodontics). Case Study Number 392346. Referred patient has had two root canal procedure previously done on this very same tooth and pain was still present for weeks. Extraction and an implant supported crown has been suggested but patient still preferred to once more try to save his own tooth. The dental operative microscope allowed the uncovering
- [How the Use of Opmi PROergo Dental Operative Microscope Prevented an Unnecessary Molar Extraction. An Endodontist Case Study.](https://www.endomontreal.com/2012/11/07/524236/) - An intricate root canal procedure. Case study number 524236 Two successive root canal procedure attemps failed on this mandibular molar. In the past three years patient had to take many courses of antibiotics to control pain and swelling. Patient is unable to chew on that tooth. An extraction and an implant supported crown has been
- [Vertucci's Type III Intricate Long Root Canals to Treat in Distal Root (Case 422)](https://www.endomontreal.com/2008/06/13/four-intricate-long-root-canals-to-treat-case-422/) - A 28 mm long sclerotic and curved canals and a type III canal configuration in distal root. Imagen radiografica en la que observamos una raiz distal con una configuracion de canal tipo III, con canales curvados y escleroticos largos de 28 mm.
- [A Vertucci's Type III Canal Configuration in Distal Root (Case 410)](https://www.endomontreal.com/2008/06/24/case-410/) - Vertucci's Type III canal configuration One canal leaves the pulp chamber and divide into two in the root; the two then merge to exit as one canal (1-2-1). According to Vertucci's study in 1984, the percentage of human permanent teeth with this canal configuration are 5 % for the maxillary second premolar and 0% for mandibular
- [A Vertucci Type III Vestibular Root Canal Configuration in Maxillary Molar (Case 363826)](https://www.endomontreal.com/2009/04/29/a-vertucci-type-iii-vestibular-root-canal-configuration-in-maxillary-molar-case-363826/) - Vertucci's Type III canal configuration: "One canal leaves the pulp chamber and divide into two in the root; the two then merge to exit as one canal (1-2-1)" According to Vertucci's study in 1984, the percentage of human permanent teeth with this canal configuration are 5 % for the maxillary second premolar and 0% for maxillary
- [Dentistry with Zeiss OPMI PRO Ergo Operative Microscope: Striving to Find a Pathway to the Apex by Bypassing a "Mega Odontolith" in an Anomalous RC System](https://www.endomontreal.com/2011/02/02/espa/) - This is a symptomatic mandibular first premolar (bridge abutment) with a "C" shape root canal system. Most C-shaped canals occurs in mandibular second molars but they have been also reported in the mandibular first molar, the maxillary first and second molars and the mandibular first premolar. This "C" shape first mandibular premolar root canal system
- [Root Canal Procedure on an Apical Root Canal Split (Apical delta)](https://www.endomontreal.com/2008/05/03/011820/) - An intricate root canal procedure. Case study number 011820 A Vertucci type V pulp space configuration can be described as follow: One canal leaves the pulp chamber and divides short of the apex into two separate distinct canals with distinct foramina (1-2). According to Vertucci’s study in 1984 on a 100 mandibular molars sample, the
- [Root Canal Treatment (Case 329)](https://www.endomontreal.com/2008/06/29/case-329/) - Multiple portals of exit in distal root and severe curves in mesial root in a mandibular second molar. Refering dentist asked us to restore the tooth. Casted gold post and a gold crown with a long bevelled edge margin. Crown and casted post by Dental Ceramic Studio in Westmount. Multiples puertas(sitios ) de salida en
- [Root Canal Treatment 420946](https://www.endomontreal.com/2008/07/21/420946/)
- [Sharply curved root canals on mandibular molar (Case 16346)](https://www.endomontreal.com/2008/12/04/sharply-curved-root-canals-on-mandibular-molar-case-16346/) - Broken lingual wall, no labial wall, extensive restoration and acute pulpitis on this mandibular molar. Sharply curved root canals.
- [Broken stainless steel paste filler retrieval from a curvy root canal? Yes it can be done!](https://www.endomontreal.com/2013/07/21/our-office-will-be-closed-from-july-19th-until-august-19th-2013-we-wish-you-a-very-nice-summer/) - ]
- [Welcome back to endomontreal.com, we hope that 2012 is a happy and healthy year for you all. ](https://www.endomontreal.com/2012/01/10/welcome-back-to-endomontreal-com-we-hope-that-2012-is-a-happy-and-healthy-year-for-you-all/) - What's new on endomontreal.com? A) Let us start the new year with some words of wisdom from president of the European Society of Endodontics Dr Claus Löst : "Dental Implants- The better tooth?" on page 2 of the ESE Newsletter: http://www.e-s-e.eu/pdf/news/7th-ese-newsletter-38.pdf B) A root canal procedure on a very long keytooth. Case study number
- [Please take note that our clinic will be closed between December the 22nd 2010 and January the 9th 2012](https://www.endomontreal.com/2012/01/01/please-take-note-that-our-clinic-will-be-closed-between-december-the-22nd-2010-and-january-the-9th-2012/) - Thanks for visiting this blog on endodontics We wish you all a happy new year!
- [What's new on this blog on friday the 17th, june, 2011](https://www.endomontreal.com/2011/06/17/whats-new-friday-the-17th-june-2011/) - A new case study: OPMI PROergo dental operative microscope VS completely calcified root canals Case number: 403616
- [What's new on this blog on Friday, May, 26 th, 2011?](https://www.endomontreal.com/2011/05/26/whats-new-on-this-blog-on-friday-may-26-th-2011/) - A new case study number 448115: OPMI PROergo vs extreme canal system calcifications on a fixed bridge abutment
- [What's new on this blog on Friday, May, 13 th, 2011?](https://www.endomontreal.com/2011/05/13/whats-new-on-this-blog-on-friday-may-13-th-2011/) - A new case study number 491047: OPMI PROergo microscope VS separated paste filler on second mandibular molar
- [What's new on this blog on Friday, April, 28 th, 2011?](https://www.endomontreal.com/2011/05/02/whats-new-on-this-blog-on-friday-april-28-th-2011/) - A new case study number: 465016 showing the benefit of the Opmi Prergo dental operative microscope versus a completely calcified system on a first maxillary molar.
- [What's new on this blog on Friday, April, 21 st, 2011?](https://www.endomontreal.com/2011/04/21/whats-new-on-this-blog-on-friday-april-21-st-2011/) - 1) A nice comment on case study number: 317736 from a colleague in Tampa Bay, Florida Dr Ernest Rillman, who truly experienced both the power of very high magnification and the inherent difficulty when using it. Proergo microscope from Zeiss makes those endodontic cases very exciting. For the greater benefit of our patients, endodontics will
- [What's new on this blog on Friday, April, 8 th, 2011?](https://www.endomontreal.com/2011/04/08/whats-new-on-this-blog-on-friday-april-8-th-2011/) - 1) A new case study by Dr Pierre Pizem: "When a "J" type lesion on an X ray image, as well as "deep narrow periodontal pocket" could have missled the dental practioner to conclude the presence of a cracked tooth". 2) An link towards an article by Dr Jack S. Roth exploring
- [What's new on this blog on Friday, March 25, 2011?](https://www.endomontreal.com/2011/03/24/1891/) - 1) A new case study: Carl Zeiss Opmi Pro Ergo microscope vs complete stenosis of an apical root canal split 2) Stemcells in endodontics an interesting video on YOUTUBE by Dr George Huang, professor at the dental department in Boston University, a SCAP Guru in the US
- [What’s new on this blog on Friday, March 18 th, 2011](https://www.endomontreal.com/2011/03/17/whats-new-on-this-blog-on-friday-march-18-th-2011/) - A new case study: Zeiss Opmi Pro Ergo dental operative microscope VS almost complete stenosis of root canal system
- [Please take note that our clinic will be closed between February the 22nd 2011 and March the 4th 2011](https://www.endomontreal.com/2011/02/23/please-take-note-that-our-clinic-will-be-closed-between-february-the-22nd-2011-and-march-the-4th-2011/)
- [A very very long tooth. 28 mm in palatal, 26 mm in mesio vestibulars 1 and 2](https://www.endomontreal.com/2011/02/22/1727/) - A gigantic 28 mm treated maxillary molar on display with four mineralized canals incuding the MB2. Its mesio vestibular root has two separate apical foramens. This is a key tooth for the patient since he lost the two other molars on the same side.
- [What’s new on this blog on Friday,18th, 2011](https://www.endomontreal.com/2011/02/14/abc/) - An important new feature: A translating plugin powered by GOOGLE TRANSLATE located in the right column of this page will maybe enable more dentists on the Web to "guess" in 48 languages what endodontics and more specifically what microendodontics can do for their patients. Today, on friday 18th, 2011, the real McCoy has arrived, the modified
- [What’s new on this blog on Friday,11th, 2011](https://www.endomontreal.com/2011/02/13/friday11th-2011/) - A new case study number: 411716: "The dental operative microscope and the MTA tooth perforation repair. The impossible made possible". This new post in NEW CASES is also featuring a video sequence showing what can be seen through my Zeiss OPMI PRO ergo dental operative microscope. This video is a provisional one, the real McCoy will replace this
- [CAE 46th Annual General Meeting, SEPTEMBER 22-25, 2010](https://www.endomontreal.com/2010/09/21/cae-46th-annual-general-meeting-september-22-25-2010/) - Dr Pierre Pizem will attend the Canadian Academy of Endodontics Annual General Meeting. The office will be closed .
- [MB and MB2 curved root canals in maxillary second molar (Case 295817)](https://www.endomontreal.com/2009/11/26/2958/)
- [Non surgical retreatment on mandibular second molar (Case 449347)](https://www.endomontreal.com/2009/09/30/non-surgical-retreatment-on-mandibular-second-molar-case-449347/) - Persistent apical periodontitis. Patient unable to chew on this tooth. Endo retreatment (Ca(OH)2 for ten days). Symptoms subsided after 8 days. Mesiovestibular root canal has a curvature into an "S" form.
- [Extreme canals stenosis in first maxillary molar (Case 441816)](https://www.endomontreal.com/2009/02/03/441816/)
- [Sharp root canal curve (Case 197335)](https://www.endomontreal.com/2008/10/23/sharp-root-canal-curve-case-197335/)
- [361436](https://www.endomontreal.com/2008/07/21/361436/)
- [From a class 3 furcation to no furcation problem (Case 321)](https://www.endomontreal.com/2008/07/11/from-a-class-3-furcation-to-no-furcation-problem-case-321/) - A good diagnosis (you try to probe and there is no probing, you put icy cold water on the tooth and the patient still likes you), a root canal treatment and look at what mother nature can do. This will definitly keep the implant away. Last scan shows a seven years post operative control X ray
- [S-Shaped root canal on mesiobuccal 2nd molar (Case 337)](https://www.endomontreal.com/2008/06/24/s-shaped-root-canal-on-mesiobuccal-2nd-molar-case-337/)
- [Very sharply curved canal in mandibular second molar (Case 5)](https://www.endomontreal.com/2008/06/20/very-sharply-curved-canal-in-mandibular-second-molar-case-5/)
- [Case 6](https://www.endomontreal.com/2008/06/20/case-6/)
- [MB1 and MB2 with severe curves first right maxillary molar](https://www.endomontreal.com/2008/06/19/mb1-and-mb2-with-severe-curves/)

## Pages

- [Home](https://www.endomontreal.com/) - Offering root canal care in Montreal for over 30 years, a microscope-assisted endodontics treatment with final tooth restoration possible the very same day.
- [Benefits of Micro Endodontics](https://www.endomontreal.com/root-canal-treatment/micro-endodontics/) - Root Canal under Operating Microscope Micro-endodontics or microsurgical endodontics is an aspect of the root canal procedure that evolved after the introduction of the Dental Operating Microscope (DOM) to endodontics in the late 1990s. One may ask how a microscope could assist a dental practitioner in performing a root canal? The goal of root canal treatment
- [About Dr. Pierre Pizem](https://www.endomontreal.com/about-dr-pizem/) - Dr Pierre Pizem, as an early champion for micro endodontics therapy, has been offering general dentistry and advanced root canal services for over 25 years.
- [EndoMontreal Dental Clinic](https://www.endomontreal.com/root-canal-montreal-clinic/) - EndoMontreal is a general practitioner dental clinic oriented towards root canal therapy. Along with our general dentistry services, we offer advanced root canal treatment services performed under a dental operating microscope, a very effective approach also known as micro endodontics. Having started to use these cutting edge procedures in the province of Quebec 20 years ago,
- [Contact Us](https://www.endomontreal.com/contact-us/) - Call to make an appointment: (514) 667-9541 Or send us a request online › 5025 Sherbrooke St. W, Suite 330A Montreal (QC) H4A 1S9 Near Metro Vendôme Directions Email: contact@endomontreal.com Dr. Pierre Pizem, Dentist Dr Pierre Pizem has been offering general dentistry and endodontics services for over 30 years. His passion
- [Referring Doctors](https://www.endomontreal.com/referring-doctors/) - Fellow dentists facing very challenging root canal cases refer patients to us. We us micro endodontics to restore and save teeth from irreversible extraction.
- [<span style="text-align:center; font-weight:normal; font-size:16px; color:grey;">Dr Pizem clinic › Patient recommendation</span>](https://www.endomontreal.com/patient-feedback/recommendation/) - EN · FR Dr Pierre Pizem : Thank you, I much appreciate your support. Would you mind posting a short review on our Google Profile? It'll take just a few seconds: Yes, post a review By Google Reviews · Quick & Simple
- [<span style="text-align:center; font-weight:normal; font-size:16px; color:grey;">Dr Pizem clinic › Patient feedback</span>](https://www.endomontreal.com/patient-feedback/) - EN · FR Based on your experience in our dental clinic, would you recommend Dr. Pierre Pizem? Yes, I'd recommend him No, I would not I already answered it
- [Your treatment sequence at our office](https://www.endomontreal.com/faqs-new-patients/your-treatment-sequence-at-our-office/) - Our root canal procedure goes through this sequence: your pre-visit preparation, a comprehensive consultation, the endodontic treatment, and a final follow up.
- [Tooth saving tips per the AAE](https://www.endomontreal.com/faqs-new-patients/tooth-saving-tips-provided-by-aae-fact-sheet/) - The American Association of Endodontists offers guidelines to save your tooth, which should be the first choice for ideal dental health and cosmetic results.
- [Long-term Survival of Implants vs Endodontically Treated Teeth](https://www.endomontreal.com/referring-doctors/comparison-of-long-term-survival-of-implants-and-endodontically-treated-teeth/) - This research papers compares the long-term survival of implants against endodontically-treated teeth, highlighting the unique advantage of the latter.
- [Endodontic Retreatment](https://www.endomontreal.com/faqs-new-patients/i-am-having-a-failed-root-canal-treatment-case-strictly-moneywise-should-i-have-it-removed-or-not/) - I am having failed root canal treatment case. Strictly moneywise speaking should I have my dentist removed it or not?
- [Why an Operating Microscope for Dentists](https://www.endomontreal.com/referring-doctors/dr-pizem-with-a-dental-operating-microscope/) - The Dental Operating Microscope enhance several clinical abilities such as locating hidden canals, widening calcified canals, repair of teeth perforations, etc.
- [Root Canal Treatment](https://www.endomontreal.com/root-canal-treatment/) - Tooth decay or other trauma create open gates for bacteria to reach the inner part of the tooth. When nerves and blood vessels inside the tooth are damaged by bacterial contamination, the tooth, in most instances, becomes painful. The goal of root canal procedures (endodontic treatments) is to save a painful tooth by removing pulp
- [FAQ New Patients](https://www.endomontreal.com/faqs-new-patients/) - Here are some questions frequently asked by new patients: Do you accept new patients? Do you guarantee patient satisfaction? How do you service dental emergencies? What should I expect on my first visit? What is your financial policy? Is there any insurance requirement? Do I need microdentisty or microendodontics? What if I already have another
- [General Dentistry](https://www.endomontreal.com/general-dentistry/) - Along with advanced root canal therapy, we provide comprehensive general dentistry services. Find below some of our more popular treatments: Microscope-assisted Root Canal Tooth decay or other trauma create open gates for bacteria to reach the inner part of the tooth. When nerves and blood vessels inside the tooth are damaged by bacterial contamination, the tooth,
- [<span style="text-align:center; font-weight:normal; font-size:16px; color:grey;">Dr Pizem clinic › Patient suggestion</span>](https://www.endomontreal.com/patient-feedback/collect/) - ◄ Back · EN · FR
- [<span style="text-align:center; font-weight:normal; font-size:16px; color:grey;">Dr Pizem clinic › Thank you for your visit</span>](https://www.endomontreal.com/patient-feedback/oops/) - ◄ Back · EN · FR Sorry for the inconvenience. For any other inquiry, don't hesitate to contact us. Have a nice day.

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## Categories

- [General](https://www.endomontreal.com/category/uncategorized/)
- [Atypical canal configurations](https://www.endomontreal.com/category/atypical-canal-configurations/) - Atypical canal configuration: (Vertucci’s classification)
- [Curved canals](https://www.endomontreal.com/category/curved-canals/) - Curved canals
- [Dental operating microscope (D.O.M.) assisted R.C.T.](https://www.endomontreal.com/category/dental-operating-microscope-assisted-r-c-t/)
- [Dental operative microscope and retreatment](https://www.endomontreal.com/category/retreatment/) - Retreatment
- [Dental operative microscope versus cracks](https://www.endomontreal.com/category/dental-operating-microscope-assisted-r-c-t/dental-operative-microscope-versus-cracks/)
- [Dilaceration](https://www.endomontreal.com/category/curved-canals/dilaceration-curved-canals/) - Abrupt change in angulation in a root canal
- [Extreme endo clinical cases](https://www.endomontreal.com/category/extreme-endo-clinical-cases/)
- [Extremely curved root canals (90 degrees +)](https://www.endomontreal.com/category/curved-canals/extreme-curvatures-90-degrees/)
- [Finding previously underseen MB2](https://www.endomontreal.com/category/retreatment/finding-previously-underseen-mb2/)
- [General](https://www.endomontreal.com/category/general/)
- [NEW CASES](https://www.endomontreal.com/category/new-cases/)
- [Orthograde MTA plugs and root repairs](https://www.endomontreal.com/category/retreatment/orthograde-mta-plugs-and-root-repairs/) - Microendodontics and microsurgical endodontics MTA repairs
- [Post and core build ups](https://www.endomontreal.com/category/amalgam-post-and-core/) - Endodontic post does not increased the strenght of the remaining tooth substance, on the contrary it weakens it as a result of the additional tooth substance loss due to the post hole drilling. “On posterior teeth with enough pulp chamber depth to obviate the need for a post (2 to 4 mm), amalgam is the material of choice. Where a post is required to retain the build-up, amalgam is cheaper and faster than a cast gold core and often less destructive of tooth structure.” Alex McClean, DMD, B.Sc. (Eng.)
- [Post endodontic treatment outcomes](https://www.endomontreal.com/category/post-endodontic-treatment-outcomes/)
- [Pulp stones (denticles)](https://www.endomontreal.com/category/dental-operating-microscope-assisted-r-c-t/pulp-stones-denticles/)
- [Radix Entomolaris](https://www.endomontreal.com/category/atypical-canal-configurations/radix-entomolaris-atypical-canal-configurations/)
- [Regeneration of the periradicular tissues](https://www.endomontreal.com/category/post-endodontic-treatment-outcomes/regeneration-of-the-periradicular-tissues/) - Some examples of bone healing following root canal treatments around previously infected roots canals.
- [Resorptive defects healings](https://www.endomontreal.com/category/post-endodontic-treatment-outcomes/resorptive-defects-healings/) - Post treatment apical resorptive defects healings
- [Root canal systems calcifications](https://www.endomontreal.com/category/root-canal-systems-calcifications/) - Root canal systems obstructions by induced hard tissue formation in the pulp cavity.
- [Striving for second Mesio vestibular (MB2)](https://www.endomontreal.com/category/dental-operating-microscope-assisted-r-c-t/calcified-second-mesio-vestibular/)
- [Surgical removal of tooth structure](https://www.endomontreal.com/category/surgical-removal-tooth-structure/)
- [Taurodontism](https://www.endomontreal.com/category/atypical-canal-configurations/taurodontism/) - Taurodontism is an aberration of teeth characterized by elongated pulp chambers, apical displacement of bifurcation or trifurcation of the roots and lack of the the constriction at the level of the CEJ (cement-enamel junction)
- [Tooth sectioning](https://www.endomontreal.com/category/surgical-removal-tooth-structure/tooth-sectioning/)
- [Type II](https://www.endomontreal.com/category/atypical-canal-configurations/type-ii/)
- [Type III](https://www.endomontreal.com/category/atypical-canal-configurations/type-iii/)
- [Type V](https://www.endomontreal.com/category/atypical-canal-configurations/type-v/)
- [Type VI (Crossed canals)](https://www.endomontreal.com/category/atypical-canal-configurations/type-vi-crossed-canals/)
- [Very long teeth](https://www.endomontreal.com/category/atypical-canal-configurations/very-long-teeth/)
- [What's new?](https://www.endomontreal.com/category/whats-new/)
- ['C' shaped canal system](https://www.endomontreal.com/category/atypical-canal-configurations/c-shaped-canal-system/)
- [Apicoectomy, curettage and retrofilling](https://www.endomontreal.com/category/surgical-removal-tooth-structure/apicoectomy-curettage-and-retrofilling/)
- [Canal curvature into a 'C' form](https://www.endomontreal.com/category/curved-canals/canal-curvature-into-a-c-form/)
- [Canal curvature with an 'S' form](https://www.endomontreal.com/category/curved-canals/canal-curvature-with-an-s-form/)
- [D.O.M. versus completely calcified systems](https://www.endomontreal.com/category/dental-operating-microscope-assisted-r-c-t/complete-canal-systems-obliterations/)
- [D.O.M. versus partially calcified systems](https://www.endomontreal.com/category/dental-operating-microscope-assisted-r-c-t/partial-canal-systems-obliterations/)
- [Dealing with broken instruments removal](https://www.endomontreal.com/category/retreatment/dealing-with-broken-instruments-removal/)
- [Dealing with casted and machined posts removal](https://www.endomontreal.com/category/retreatment/dealing-with-casted-and-machined-posts-removal/)
- [Dealing with ledges and apical zip](https://www.endomontreal.com/category/retreatment/dealing-with-ledges-and-apical-zip/)
- [Dealing with N2 (Sargenti Paste) removal](https://www.endomontreal.com/category/retreatment/dealing-with-n2-sargenti-paste-removal/)
- [Dealing with silver points removal](https://www.endomontreal.com/category/retreatment/dealing-with-silver-points-removal/)
- [Popular Cases](https://www.endomontreal.com/category/popular/)
- [Avoiding a Root Canal Treatment](https://www.endomontreal.com/category/avoiding-a-root-canal-treatment/)
- [Selective Root Canal Retreatment](https://www.endomontreal.com/category/selective-root-canal-retreatment/)
- [The misleading ''J'' Shape lesion](https://www.endomontreal.com/category/the-misleading-j-shape-lesion/)
- [CBCT assisted Root Canal Treatment](https://www.endomontreal.com/category/cbct-assisted-root-canal-treatment/)

## Tags

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- [dental operating microscope](https://www.endomontreal.com/tag/dental-operating-microscope/)
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- [diffuse calcifications](https://www.endomontreal.com/tag/diffuse-calcifications/)
- [dilacerated curve](https://www.endomontreal.com/tag/dilacerated-curve/)
- [dilacerated teeth](https://www.endomontreal.com/tag/dilacerated-teeth/)
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- [Dystrophic calcifications](https://www.endomontreal.com/tag/dystrophic-calcifications/)
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- [endo buchanan](https://www.endomontreal.com/tag/endo-buchanan/)
- [Endodontic expertise](https://www.endomontreal.com/tag/endodontic-expertise/)
- [endodontic file](https://www.endomontreal.com/tag/endodontic-file/)
- [endodontic files](https://www.endomontreal.com/tag/endodontic-files/)
- [endodontic microscope](https://www.endomontreal.com/tag/endodontic-microscope/)
- [endodontic procedure](https://www.endomontreal.com/tag/endodontic-procedure/)
- [endodontic retreatment](https://www.endomontreal.com/tag/endodontic-retreatment/)
- [endodontic revision](https://www.endomontreal.com/tag/endodontic-revision/)
- [Endodontics](https://www.endomontreal.com/tag/endodontics/)
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- [Expertise](https://www.endomontreal.com/tag/expertise/)
- [external root resorption](https://www.endomontreal.com/tag/external-root-resorption/)
- [extraction](https://www.endomontreal.com/tag/extraction/)
- [exudation](https://www.endomontreal.com/tag/exudation/)
- [False pulpstones](https://www.endomontreal.com/tag/false-pulpstones/)
- [farzaneh](https://www.endomontreal.com/tag/farzaneh/)
- [fiberglass reinforced composite post](https://www.endomontreal.com/tag/fiberglass-reinforced-composite-post/)
- [filling](https://www.endomontreal.com/tag/filling/)
- [finger plugger](https://www.endomontreal.com/tag/finger-plugger/)
- [follow up](https://www.endomontreal.com/tag/follow-up/)
- [franklin s weine](https://www.endomontreal.com/tag/franklin-s-weine/)
- [Free pulpstones](https://www.endomontreal.com/tag/free-pulpstones/)
- [garry carr](https://www.endomontreal.com/tag/garry-carr/)
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- [Gutta percha](https://www.endomontreal.com/tag/gutta-percha/)
- [hidden canal](https://www.endomontreal.com/tag/hidden-canal/)
- [high level of difficulty](https://www.endomontreal.com/tag/high-level-of-difficulty/)
- [hypercementosis](https://www.endomontreal.com/tag/hypercementosis/)
- [hypertaurodontism](https://www.endomontreal.com/tag/hypertaurodontism/)
- [image](https://www.endomontreal.com/tag/image/)
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- [insurance coverage](https://www.endomontreal.com/tag/insurance-coverage/)
- [internal resorption](https://www.endomontreal.com/tag/internal-resorption/)
- [intracanal medication](https://www.endomontreal.com/tag/intracanal-medication/)
- [intricate](https://www.endomontreal.com/tag/intricate/)
- [john p pruett](https://www.endomontreal.com/tag/john-p-pruett/)
- [lateral canals](https://www.endomontreal.com/tag/lateral-canals/)
- [ledge](https://www.endomontreal.com/tag/ledge/)
- [Location](https://www.endomontreal.com/tag/location/)
- [long](https://www.endomontreal.com/tag/long/)
- [maillefer](https://www.endomontreal.com/tag/maillefer/)
- [maxillary molar](https://www.endomontreal.com/tag/maxillary-molar/)
- [Mb2](https://www.endomontreal.com/tag/mb2/)
- [Mesio vestibular](https://www.endomontreal.com/tag/mesio-vestibular/)
- [Mesiovestibular](https://www.endomontreal.com/tag/mesiovestibular/)
- [metalift](https://www.endomontreal.com/tag/metalift/)
- [metzger zvi](https://www.endomontreal.com/tag/metzger-zvi/)
- [micro ct study](https://www.endomontreal.com/tag/micro-ct-study/)
- [microendodontics](https://www.endomontreal.com/tag/microendodontics/)
- [Microscope](https://www.endomontreal.com/tag/microscope/)
- [mineral trioxide aggregate](https://www.endomontreal.com/tag/mineral-trioxide-aggregate/)
- [mineralization](https://www.endomontreal.com/tag/mineralization/)
- [montreal](https://www.endomontreal.com/tag/montreal/)
- [Mta](https://www.endomontreal.com/tag/mta/)
- [mta apical obturation](https://www.endomontreal.com/tag/mta-apical-obturation/)
- [mta plug](https://www.endomontreal.com/tag/mta-plug/)
- [n2](https://www.endomontreal.com/tag/n2/)
- [nayyar](https://www.endomontreal.com/tag/nayyar/)
- [necrosis](https://www.endomontreal.com/tag/necrosis/)
- [necrotic pulp](https://www.endomontreal.com/tag/necrotic-pulp/)
- [obliterated pulp space](https://www.endomontreal.com/tag/obliterated-pulp-space/)
- [open margin](https://www.endomontreal.com/tag/open-margin/)
- [Operative](https://www.endomontreal.com/tag/operative/)
- [operative microscope](https://www.endomontreal.com/tag/operative-microscope/)
- [opmi proergo](https://www.endomontreal.com/tag/opmi-proergo/)
- [Opmi Proergo microscope](https://www.endomontreal.com/tag/opmi-proergo-microscope/)
- [orthograde mta placement](https://www.endomontreal.com/tag/orthograde-mta-placement/)
- [outcomes](https://www.endomontreal.com/tag/outcomes/)
- [Pain](https://www.endomontreal.com/tag/pain/)
- [pain relief](https://www.endomontreal.com/tag/pain-relief/)
- [parodontal](https://www.endomontreal.com/tag/parodontal/)
- [paste filler removal](https://www.endomontreal.com/tag/paste-filler-removal/)
- [patency](https://www.endomontreal.com/tag/patency/)
- [Pathway](https://www.endomontreal.com/tag/pathway/)
- [periapical radiograph](https://www.endomontreal.com/tag/periapical-radiograph/)
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- [pierre](https://www.endomontreal.com/tag/pierre/)
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- [pizem](https://www.endomontreal.com/tag/pizem/)
- [post](https://www.endomontreal.com/tag/post/)
- [post removal](https://www.endomontreal.com/tag/post-removal/)
- [posterior mta case](https://www.endomontreal.com/tag/posterior-mta-case/)
- [posterior mta plug](https://www.endomontreal.com/tag/posterior-mta-plug/)
- [premolar](https://www.endomontreal.com/tag/premolar/)
- [private dental insurance](https://www.endomontreal.com/tag/private-dental-insurance/)
- [pro taper](https://www.endomontreal.com/tag/pro-taper/)
- [procedure](https://www.endomontreal.com/tag/procedure/)
- [prognosis](https://www.endomontreal.com/tag/prognosis/)
- [Protaper dentsply](https://www.endomontreal.com/tag/protaper-dentsply/)
- [Pulp](https://www.endomontreal.com/tag/pulp/)
- [pulp canal obliteration](https://www.endomontreal.com/tag/pulp-canal-obliteration/)
- [pulp canal sealer](https://www.endomontreal.com/tag/pulp-canal-sealer/)
- [pulp canal sealer root canal procedure](https://www.endomontreal.com/tag/pulp-canal-sealer-root-canal-procedure/)
- [pulp stones](https://www.endomontreal.com/tag/pulp-stones/)
- [pulpitis](https://www.endomontreal.com/tag/pulpitis/)
- [pulpstone](https://www.endomontreal.com/tag/pulpstone/)
- [Pulpstones](https://www.endomontreal.com/tag/pulpstones/)
- [radiolucent apical lesion](https://www.endomontreal.com/tag/radiolucent-apical-lesion/)
- [radius of curvature](https://www.endomontreal.com/tag/radius-of-curvature/)
- [radix entomolaris](https://www.endomontreal.com/tag/radix-entomolaris/)
- [radix molar](https://www.endomontreal.com/tag/radix-molar/)
- [rc prep](https://www.endomontreal.com/tag/rc-prep/)
- [regeneration of periradicular tissues](https://www.endomontreal.com/tag/regeneration-of-periradicular-tissues/)
- [resin](https://www.endomontreal.com/tag/resin/)
- [restoration](https://www.endomontreal.com/tag/restoration/)
- [Retreatment](https://www.endomontreal.com/tag/retreatment-2/)
- [retrieval](https://www.endomontreal.com/tag/retrieval/)
- [Retrofilling](https://www.endomontreal.com/tag/retrofilling/)
- [risk](https://www.endomontreal.com/tag/risk/)
- [risk assessment](https://www.endomontreal.com/tag/risk-assessment/)
- [risks](https://www.endomontreal.com/tag/risks/)
- [root](https://www.endomontreal.com/tag/root/)
- [Root canal](https://www.endomontreal.com/tag/root-canal/)
- [root canal anatomy](https://www.endomontreal.com/tag/root-canal-anatomy/)
- [root canal anatomy project](https://www.endomontreal.com/tag/root-canal-anatomy-project/)
- [root canal apical split](https://www.endomontreal.com/tag/root-canal-apical-split/)
- [root canal curvature](https://www.endomontreal.com/tag/root-canal-curvature/)
- [root canal filling](https://www.endomontreal.com/tag/root-canal-filling/)
- [root canal perforation](https://www.endomontreal.com/tag/root-canal-perforation/)
- [root canal perforation repair](https://www.endomontreal.com/tag/root-canal-perforation-repair/)
- [root canal procedure](https://www.endomontreal.com/tag/root-canal-procedure/)
- [root canal sealer](https://www.endomontreal.com/tag/root-canal-sealer/)
- [root canal split](https://www.endomontreal.com/tag/root-canal-split/)
- [root canal system](https://www.endomontreal.com/tag/root-canal-system/)
- [Root canal system calcifications](https://www.endomontreal.com/tag/root-canal-system-calcifications/)
- [Root canal treatment](https://www.endomontreal.com/tag/root-canal-treatment/)
- [root end filling material](https://www.endomontreal.com/tag/root-end-filling-material/)
- [rubber dam](https://www.endomontreal.com/tag/rubber-dam/)
- [rubber dam clamp](https://www.endomontreal.com/tag/rubber-dam-clamp/)
- [ruddle clifford](https://www.endomontreal.com/tag/ruddle-clifford/)
- [russian red](https://www.endomontreal.com/tag/russian-red/)
- [s form canal curvature](https://www.endomontreal.com/tag/s-form-canal-curvature/)
- [s shape root canal](https://www.endomontreal.com/tag/s-shape-root-canal/)
- [saf](https://www.endomontreal.com/tag/saf/)
- [saf system](https://www.endomontreal.com/tag/saf-system/)
- [sargenti](https://www.endomontreal.com/tag/sargenti/)
- [sargenti paste](https://www.endomontreal.com/tag/sargenti-paste/)
- [save](https://www.endomontreal.com/tag/save/)
- [schilder](https://www.endomontreal.com/tag/schilder/)
- [schneider sw](https://www.endomontreal.com/tag/schneider-sw/)
- [Second mesio vestibular](https://www.endomontreal.com/tag/second-mesio-vestibular/)
- [separated instrument removal](https://www.endomontreal.com/tag/separated-instrument-removal/)
- [separation](https://www.endomontreal.com/tag/separation/)
- [severe curvature](https://www.endomontreal.com/tag/severe-curvature/)
- [severe tooth calcification](https://www.endomontreal.com/tag/severe-tooth-calcification/)
- [shaping](https://www.endomontreal.com/tag/shaping/)
- [sharply curved canals](https://www.endomontreal.com/tag/sharply-curved-canals/)
- [silver points](https://www.endomontreal.com/tag/silver-points/)
- [silver points removal](https://www.endomontreal.com/tag/silver-points-removal/)
- [single appointment root canal](https://www.endomontreal.com/tag/single-appointment-root-canal/)
- [Sinus tract](https://www.endomontreal.com/tag/sinus-tract/)
- [small radius](https://www.endomontreal.com/tag/small-radius/)
- [sodium hypochlorite](https://www.endomontreal.com/tag/sodium-hypochlorite/)
- [spartan](https://www.endomontreal.com/tag/spartan/)
- [sudden angular bend](https://www.endomontreal.com/tag/sudden-angular-bend/)
- [supernumerary root](https://www.endomontreal.com/tag/supernumerary-root/)
- [surgical endodontics](https://www.endomontreal.com/tag/surgical-endodontics/)
- [surgical operative microscope](https://www.endomontreal.com/tag/surgical-operative-microscope/)
- [system](https://www.endomontreal.com/tag/system/)
- [teeth restorability](https://www.endomontreal.com/tag/teeth-restorability/)
- [tooth](https://www.endomontreal.com/tag/tooth/)
- [tooth ache](https://www.endomontreal.com/tag/tooth-ache/)
- [tooth perforation repair](https://www.endomontreal.com/tag/tooth-perforation-repair/)
- [tooth sectioning](https://www.endomontreal.com/tag/tooth-sectioning-2/)
- [treatment protocol](https://www.endomontreal.com/tag/treatment-protocol/)
- [True pulpstones](https://www.endomontreal.com/tag/true-pulpstones/)
- [ultrasonic tips](https://www.endomontreal.com/tag/ultrasonic-tips/)
- [underfill](https://www.endomontreal.com/tag/underfill/)
- [university sau paulo](https://www.endomontreal.com/tag/university-sau-paulo/)
- [vertucci type V root canal configuration](https://www.endomontreal.com/tag/vertucci-type-v-root-canal-configuration/)
- [very high risk](https://www.endomontreal.com/tag/very-high-risk/)
- [very long tooth](https://www.endomontreal.com/tag/very-long-tooth/)
- [Video](https://www.endomontreal.com/tag/video/)
- [voco](https://www.endomontreal.com/tag/voco/)
- [worn tooth](https://www.endomontreal.com/tag/worn-tooth/)
- [bioceramic material](https://www.endomontreal.com/tag/bioceramic-material/)
- [bioceramic sealer material](https://www.endomontreal.com/tag/bioceramic-sealer-material/)
- [advanced technology](https://www.endomontreal.com/tag/advanced-technology/)
- [advanced endodontics](https://www.endomontreal.com/tag/advanced-endodontics/)
- [tooth position](https://www.endomontreal.com/tag/tooth-position/)
- [pulpolithes](https://www.endomontreal.com/tag/pulpolithes/)
- [pulp chamber](https://www.endomontreal.com/tag/pulp-chamber/)
- [obliteration](https://www.endomontreal.com/tag/obliteration/)
- [difficult access](https://www.endomontreal.com/tag/difficult-access/)
- [anatomical variation](https://www.endomontreal.com/tag/anatomical-variation/)
- [facebook](https://www.endomontreal.com/tag/facebook/)
- [Dr Marco Versiani](https://www.endomontreal.com/tag/dr-marco-versiani/)
- [Ibuprofen](https://www.endomontreal.com/tag/ibuprofen/)
- [serous](https://www.endomontreal.com/tag/serous/)
- [exudate](https://www.endomontreal.com/tag/exudate/)
- [swelling](https://www.endomontreal.com/tag/swelling/)
- [debridement](https://www.endomontreal.com/tag/debridement/)
- [wisdom tooth](https://www.endomontreal.com/tag/wisdom-tooth/)
- [surgery](https://www.endomontreal.com/tag/surgery/)
- [bone grafting](https://www.endomontreal.com/tag/bone-grafting/)
- [fear](https://www.endomontreal.com/tag/fear/)
- [dental treatment fear](https://www.endomontreal.com/tag/dental-treatment-fear/)
- [phobia](https://www.endomontreal.com/tag/phobia/)
- [calcified](https://www.endomontreal.com/tag/calcified/)
- [tooth axis inclination](https://www.endomontreal.com/tag/tooth-axis-inclination/)
- [fixed dental bridge](https://www.endomontreal.com/tag/fixed-dental-bridge/)
- [removable partial dentures](https://www.endomontreal.com/tag/removable-partial-dentures/)
- [preserve](https://www.endomontreal.com/tag/preserve/)
- [chx](https://www.endomontreal.com/tag/chx/)
- [NaOCl](https://www.endomontreal.com/tag/naocl/)
- [many endodontic files](https://www.endomontreal.com/tag/many-endodontic-files/)
- [root canal therapy](https://www.endomontreal.com/tag/root-canal-therapy/)
- [healing](https://www.endomontreal.com/tag/healing/)
- [gel](https://www.endomontreal.com/tag/gel/)
- [antibacterial gel](https://www.endomontreal.com/tag/antibacterial-gel/)
- [root canal entries](https://www.endomontreal.com/tag/root-canal-entries/)
- [painful tooth](https://www.endomontreal.com/tag/painful-tooth/)
- [bioactive](https://www.endomontreal.com/tag/bioactive/)
- [material](https://www.endomontreal.com/tag/material/)
- [pulp vitality](https://www.endomontreal.com/tag/pulp-vitality/)
- [caries](https://www.endomontreal.com/tag/caries/)
- [relieve pain](https://www.endomontreal.com/tag/relieve-pain/)
- [drainage](https://www.endomontreal.com/tag/drainage/)
- [analgesics drugs](https://www.endomontreal.com/tag/analgesics-drugs/)
- [pulp chamber opening](https://www.endomontreal.com/tag/pulp-chamber-opening/)
- [second mesiovestibular](https://www.endomontreal.com/tag/second-mesiovestibular/)
- [chelating agent](https://www.endomontreal.com/tag/chelating-agent/)
- [Protaper](https://www.endomontreal.com/tag/protaper/)
- [dentsply](https://www.endomontreal.com/tag/dentsply/)
- [diamond coated tips](https://www.endomontreal.com/tag/diamond-coated-tips/)
- [ultrasonic](https://www.endomontreal.com/tag/ultrasonic/)
- [zeiss](https://www.endomontreal.com/tag/zeiss/)
- [protaper universal](https://www.endomontreal.com/tag/protaper-universal/)
- [carestream kodack 6100](https://www.endomontreal.com/tag/carestream-kodack-6100/)
- [mani endodontic files](https://www.endomontreal.com/tag/mani-endodontic-files/)
- [course of antibiotics](https://www.endomontreal.com/tag/course-of-antibiotics/)
- [crown lengthening](https://www.endomontreal.com/tag/crown-lengthening/)
- [crown to root ratio](https://www.endomontreal.com/tag/crown-to-root-ratio/)
- [controversy](https://www.endomontreal.com/tag/controversy/)
- [Ruddle Post Removal System](https://www.endomontreal.com/tag/ruddle-post-removal-system/)
- [Gonon Post Removal System](https://www.endomontreal.com/tag/gonon-post-removal-system/)
- [pontic](https://www.endomontreal.com/tag/pontic/)
- [cantilever](https://www.endomontreal.com/tag/cantilever/)
- [blockage](https://www.endomontreal.com/tag/blockage/)
- [pui](https://www.endomontreal.com/tag/pui/)
- [core build up](https://www.endomontreal.com/tag/core-build-up/)
- [root canal morphology](https://www.endomontreal.com/tag/root-canal-morphology/)
- [root canal calcifications](https://www.endomontreal.com/tag/root-canal-calcifications/)
- [root canal revision](https://www.endomontreal.com/tag/root-canal-revision/)
- [j shape lesion](https://www.endomontreal.com/tag/j-shape-lesion/)
- [vertical root fracture](https://www.endomontreal.com/tag/vertical-root-fracture/)
- [experts](https://www.endomontreal.com/tag/experts/)
- [endodontic instruments](https://www.endomontreal.com/tag/endodontic-instruments/)
- [access cavity](https://www.endomontreal.com/tag/access-cavity/)
- [mani stainless endodontic files](https://www.endomontreal.com/tag/mani-stainless-endodontic-files/)
- [warm vertical condensation](https://www.endomontreal.com/tag/warm-vertical-condensation/)
- [carestream kodak 6100](https://www.endomontreal.com/tag/carestream-kodak-6100/)
- [rare](https://www.endomontreal.com/tag/rare/)
- [magnification](https://www.endomontreal.com/tag/magnification/)
- [NeoMTA Plus](https://www.endomontreal.com/tag/neomta-plus/)
- [fractured cusp](https://www.endomontreal.com/tag/fractured-cusp/)
- [buccal root](https://www.endomontreal.com/tag/buccal-root/)
- [carestream](https://www.endomontreal.com/tag/carestream/)
- [flexipost](https://www.endomontreal.com/tag/flexipost/)
- [relyX](https://www.endomontreal.com/tag/relyx/)
- [remote area of the mouth](https://www.endomontreal.com/tag/remote-area-of-the-mouth/)
- [limited opening of the mouth](https://www.endomontreal.com/tag/limited-opening-of-the-mouth/)
- [instrument fracture](https://www.endomontreal.com/tag/instrument-fracture/)
- [lateral canal](https://www.endomontreal.com/tag/lateral-canal/)
- [Vertucci's Type VI](https://www.endomontreal.com/tag/vertuccis-type-vi/)
- [Root canal configuration](https://www.endomontreal.com/tag/root-canal-configuration/)
- [natural tooth](https://www.endomontreal.com/tag/natural-tooth/)
- [plastic carrier removal](https://www.endomontreal.com/tag/plastic-carrier-removal/)
- [technical complications](https://www.endomontreal.com/tag/technical-complications/)
- [isthmus](https://www.endomontreal.com/tag/isthmus/)
- [stripping](https://www.endomontreal.com/tag/stripping/)
- [perforation](https://www.endomontreal.com/tag/perforation/)
- [endodontic procedure revision](https://www.endomontreal.com/tag/endodontic-procedure-revision/)
- [implant alternative](https://www.endomontreal.com/tag/implant-alternative/)
- [Kerr](https://www.endomontreal.com/tag/kerr/)
- [glass fiber post](https://www.endomontreal.com/tag/glass-fiber-post/)
- [krasner](https://www.endomontreal.com/tag/krasner/)
- [Rankow](https://www.endomontreal.com/tag/rankow/)
- [CBCT](https://www.endomontreal.com/tag/cbct/)
- [3D Scan](https://www.endomontreal.com/tag/3d-scan/)
- [maxillary](https://www.endomontreal.com/tag/maxillary/)
- [emergency](https://www.endomontreal.com/tag/emergency/)
- [adherent calcifications](https://www.endomontreal.com/tag/adherent-calcifications/)
- [calcification](https://www.endomontreal.com/tag/calcification/)
- [Krasner and Rankow](https://www.endomontreal.com/tag/krasner-and-rankow/)
- [apical hook](https://www.endomontreal.com/tag/apical-hook/)
- [glide path](https://www.endomontreal.com/tag/glide-path/)
- [ProFile](https://www.endomontreal.com/tag/profile/)
- [P5](https://www.endomontreal.com/tag/p5/)
- [root canal obliteration](https://www.endomontreal.com/tag/root-canal-obliteration/)
- [pulp chamber obliteration](https://www.endomontreal.com/tag/pulp-chamber-obliteration/)
- [Cone-beam Computed Tomography](https://www.endomontreal.com/tag/cone-beam-computed-tomography/)
- [Digital Radiography](https://www.endomontreal.com/tag/digital-radiography/)
- [Guided Endodontics](https://www.endomontreal.com/tag/guided-endodontics/)
- [Ultrasound](https://www.endomontreal.com/tag/ultrasound/)
- [Avalon Biomed](https://www.endomontreal.com/tag/avalon-biomed/)
- [Nakanishi](https://www.endomontreal.com/tag/nakanishi/)
- [ultrasonic tip](https://www.endomontreal.com/tag/ultrasonic-tip/)
- [Buc 3 tips](https://www.endomontreal.com/tag/buc-3-tips/)
- [Varios 370](https://www.endomontreal.com/tag/varios-370/)
- [reparative dentine](https://www.endomontreal.com/tag/reparative-dentine/)
- [nsk](https://www.endomontreal.com/tag/nsk/)
- [apical resorption](https://www.endomontreal.com/tag/apical-resorption/)
- [obliterated](https://www.endomontreal.com/tag/obliterated/)
- [instrument separation](https://www.endomontreal.com/tag/instrument-separation/)
- [Ingles](https://www.endomontreal.com/tag/ingles/)
- [casted post removal](https://www.endomontreal.com/tag/casted-post-removal/)
- [emergency appointment](https://www.endomontreal.com/tag/emergency-appointment/)
- [endodontic access](https://www.endomontreal.com/tag/endodontic-access/)
- [electric handpiece](https://www.endomontreal.com/tag/electric-handpiece/)
- [cone fit](https://www.endomontreal.com/tag/cone-fit/)
- [Master apical Files](https://www.endomontreal.com/tag/master-apical-files/)
- [pericervical dentine](https://www.endomontreal.com/tag/pericervical-dentine/)
- [MAF](https://www.endomontreal.com/tag/maf/)
- [periapical lesions](https://www.endomontreal.com/tag/periapical-lesions/)
- [necrotic pulps](https://www.endomontreal.com/tag/necrotic-pulps/)
- [tooth preservation](https://www.endomontreal.com/tag/tooth-preservation/)
- [root fracture](https://www.endomontreal.com/tag/root-fracture/)
- [long term follow up](https://www.endomontreal.com/tag/long-term-follow-up/)
- [endodontie Montréal](https://www.endomontreal.com/tag/endodontie-montreal/)
- [traitement de canal Montréal](https://www.endomontreal.com/tag/traitement-de-canal-montreal/)
- [préserver une dent](https://www.endomontreal.com/tag/preserver-une-dent/)
- [fracture radiculaire](https://www.endomontreal.com/tag/fracture-radiculaire/)
- [dent fissurée](https://www.endomontreal.com/tag/dent-fissuree/)
- [suivi à long terme](https://www.endomontreal.com/tag/suivi-a-long-terme/)
- [microscope opératoire dentaire](https://www.endomontreal.com/tag/microscope-operatoire-dentaire/)
- [endodontics Montreal](https://www.endomontreal.com/tag/endodontics-montreal/)
- [root canal treatment Montreal](https://www.endomontreal.com/tag/root-canal-treatment-montreal/)
- [cracked tooth](https://www.endomontreal.com/tag/cracked-tooth/)
- [dental microscope](https://www.endomontreal.com/tag/dental-microscope/)
- [Westmount dentist](https://www.endomontreal.com/tag/westmount-dentist/)
- [endodontics Westmount](https://www.endomontreal.com/tag/endodontics-westmount/)
- [TVFC dentaire](https://www.endomontreal.com/tag/tvfc-dentaire/)