Related Experiment Video
Updated: May 17, 2026
Scanning Electron Microscopic Evaluation of Surface Defects of Remover Retreatment File After Single and Multiple Uses
Published on: October 11, 2024
Retreatment of a 6-canalled mandibular first molar with four mesial canals: a case report
Mohsen Aminsobhani1, Noushin Shokouhinejad, Sholeh Ghabraei
1Department of Endodontics, Dental School/Dental Research Center, Tehran University of Medical Sciences, and member of Iranian Center for Endodontic Research, Tehran, Iran.
Abstract:
Successful root canal treatment requires adequate knowledge regarding morphologic variations in root canal system of teeth. This report describes a six-canalled mandibular first molar with four mesial root canals requiring endodontic retreatment. The two additional canals in the mesial root were found during retreatment with the aid of illumination and magnification. In conclusion, the possibility of atypical morphology and additional canals should never be overlooked.
