Affiliation:
1. Nippon Kokan Fukuyama Hospital Hiroshima Japan
2. Department of Biological Endodontics, Graduate School of Biomedical and Health Sciences Hiroshima University Hiroshima Japan
3. Wada Dental Clinic Hiroshima Japan
Abstract
Key Clinical MessageEndodontists should be aware that some maxillary second molars can have more than three roots. If any unusual anatomical features are detected during dental radiography or endodontic procedures, it is necessary to conduct cone‐beam computed tomography (CBCT) scanning to prevent procedural mishaps.AbstractCBCT can provide three‐dimensional reconstructed images of the root canal system. With the help of CBCT, variations in tooth root number and root canal morphology, such as extra canals, apical ramifications, apical deltas, and lateral canals, can be identified. Knowledge of the variations is very important for the success of endodontic treatment. This report suggests that endodontists must not assume that a MSM has only three tooth roots, which is the most prevalent number.