Concrescence of a maxillary second and third molar.

BACKGROUND: Concrescence is a rare dental anomaly that may be inadvertently diagnosed during a tooth extraction. CASE DESCRIPTION: While extracting a maxillary second and third molar, it became evident that the teeth were attached between the roots. Both teeth were extracted atraumatically and healing was uneventful. CLINICAL IMPLICATIONS: Concrescence may increase the likelihood of certain complications to occur during a tooth extraction. Practitioners should consider concrescence prior to surgery when obtaining informed consent from patients.