A right lower central incisor with a sinus tract at the labial gingiva that required periodontal treatment, but not endodontic treatment: Prodigious amount of periodontal regeneration of the severe labial bone loss due to a cemental tear after treatment

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.