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 for silver points to come into contact with tissue fluids and a huge amount of corrosion occurred.
“Corrosion products such as silver sulfide, chloride, sulfate and carbonate not only occurs on the point itself but also in dentine and within the adjacent periapical adjacent soft tissues”
Pocket atlas of endodontics by Rudolf Beer,Michael A. Baumann,Andrej M. Kielbassa
This spreading of silver points corrosion products and the important deterioration of root canals walls in the apical region by tooth decay explains why root canals had to be enlarged to a number 80 endodontic file.