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MB1 and MB2 Even Though Merging Did Not Prevent this Patient to Get an A.A.A.

June 7, 2008 By Dr Pierre Pizem Leave a Comment

Dental Operative Microscope and Retreatment, Finding Previously Underseen MB2, Root Canal Treatment Pre-Therapy 02-1Dental Operative Microscope and Retreatment, Finding Previously Underseen MB2, Root Canal Treatment Pre-Therapy 02-2Dental Operative Microscope and Retreatment, Finding Previously Underseen MB2, Root Canal Treatment Per-Therapy 02-1

Dental Operative Microscope and Retreatment, Finding Previously Underseen MB2, Root Canal Treatment Per-Therapy 02-2Dental Operative Microscope and Retreatment, Finding Previously Underseen MB2, Root Canal Treatment Post-Therapy 02-1

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 is then filled with Ca(OH)2 and a provisionnal post and crown cemented with Temp Bond insure a good seal for the next ten days.

Second appointment : Final obturation with Pulp Canal sealer lateral and vertical packing of gutta percha One year post-op X Ray shows nice bone healing It’s worth it to note that in this case, MB and MB2 apex anastomosis did not prevent this patient from getting an AAA. In first upper molars, an MB2 is present in 93% of the cases. Thus, to always strive to find, clean and shape MB2 should be the standard of care.

Filed Under: Dental operative microscope and retreatment, Finding previously underseen MB2, Regeneration of the periradicular tissues, Dealing with casted and machined posts removal

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