Prevalence of palatogingival groove and its association with periapical lesions and periodontal bone loss: a cone beam computed tomography study

PGGs were found mostly in maxillary lateral incisors. Most teeth with type II and III PGGs were characterized by periodontal bone loss and periapical lesions. Additionally, most PGG teeth with periodontal bone loss had periapical lesions. These findings imply that the presence of a PGG should be suspected in a maxillary incisor with a narrow periodontal pocket and periapical lesion but no caries, cracks, or restorations.