Frequency of Procedural Errors during Root Canal Treatment Performed by Interns

Aims: Chemo-mechanical preparation continues to be one of the most challenging steps in root canal treatment procedures. The aim of this study was to examine the frequency of procedural errors during root canal treatment performed by interns.

Study Design: Cross sectional descriptive study.

Methodology: A total of 200 patients scheduled for root canal treatment in the permanent first molar were selected and pre-operative radiographs were taken before the procedure. After achieving a straight line access, the interns performed conventional step back technique to prepare the canals and irrigation was done using 2.5% sodium hypochlorite solution. After completion of the instrumentation procedure, two experienced endodontists evaluated the cases both clinically and radiographically.

Results: Results showed that a total of 78 (39%) cases received procedural errors, and the remaining cases received appropriate instrumentation procedures. Apical Transportation (12%) presented the highest percentage for procedural errors followed by ledge formation (10%), strip perforation (5%), apical perforation (5%), instrument separation (4%) and perforation during access (3%).

Conclusion: The present study suggests a high frequency of procedural errors 39% in all cases performed by interns. This reflects the amount of clinical knowledge and skill possessed and applied by operator during the course of the treatment.