Retreatment of Root Canal Failure, Possible? A Review

The main aim of endodontic treatment was to eliminate the bacterial load from the canal by mechanical, chemical preparations and three dimensional obturation of the canal. There are various factors which are responsible for endodontic failure, different ischolar_main canal system, presences of addition canal or lateral canal, over obturation. The aim of this review article was to how to manage these retreatment cases and prevent ischolar_main canal failure cases.