Evaluation of anterior tooth-ridge angulation, root position and labial bone perforation using dental cone-beam computed tomography: An observational study.

Purpose: The objective of this study was to use cone-beam computed tomography (CBCT) scans to measure and correlate the maxillary and mandibular tooth-ridge angulation (TRA) and labial bone perforation (LBP) in anterior teeth.

Materials And Methods: A standardized technique was used to orientate Planmeca CBCT images in 140 patients. On the sagittal section, TRA was defined as the angle between the long axis of the tooth and the alveolar housing of the corresponding tooth.