1Post Graduate Student, Nitte University, Deralakatte, Mangalore
2Additional Professor, Nitte University, Deralakatte, Mangalore
3Head of Department Nitte University, Deralakatte, Mangalore
4Professor, Nitte University, Deralakatte, Mangalore
5Sr. Lecturer, Absmids, Nitte University, Deralakatte, Mangalore
The root canal treatment failure is a frequentproblem occurring in dentistry. Inadequate chemo mechanicalpreparation, poor obturation, over obturation, persistence of bacteria, instrument separation, missing canal, coronal microleakage are some of the causes responsible for the failure of the root canal treatment. 400 root canal treated teeth with failure were included in this study and were recorded using digital radiography. Under obturation was the predominant factor for the failure of root canal treatment. The larger number of the endodontic failures was found in the timeperiod of within 4–5 years. The maximum average time period causing failure was seen to be 3.85 yearsfor over obturation..
Over obturation, microleakage, persistent periapical infection
