Rare root canal morphology of maxillary second molars: A report of three cases

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. CBCT 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.

Automated summary

Endodontists should be aware that some maxillary second molars can have more than three roots and should conduct CBCT scanning if any unusual anatomical features are detected. CBCT can provide three-dimensional reconstructed images of the root canal system, allowing for the identification of variations in root number and canal morphology. Knowledge of these variations is important for the success of endodontic treatment. This report suggests not assuming that a MSM has only three tooth roots, which is the most prevalent number.