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Key Clinical Message: Endodontists 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. [ABSTRACT FROM AUTHOR]

Cone‐beam computed tomography and clinical examinations including pulp vital testing and pocket probing depth showed a cemental tear with a severe labial alveolar bony defect, but no endodontic lesions, in #25, which had a sinus tract at the labial site, in a 75‐year‐old woman. The present case report describes the clinical management of a cemental tear with severe periodontal tissue destruction that included complete removal of the torn fragments and periodontal regenerative treatment with novel therapy using rhFGF‐2. [ABSTRACT FROM AUTHOR]

The present case report describes the clinical detection and root canal management of a rare middle mesial canal of a Japanese mandibular second molar by troughing preparation using an operating microscope and cone‐beam computed tomography. [ABSTRACT FROM AUTHOR]