Sensitivity of the inferior lip and chin following mandibular bilateral sagittal split osteotomy using Piezosurgery.

Background: Bimaxillary osteotomy, including bilateral sagittal split osteotomy, is the most commonly performed orthognathic surgical intervention in Europe and the United States. Neurosensory perturbation in the territory of the inferior alveolar nerve is a reported adverse effect of bilateral sagittal split osteotomy. Piezosurgery is a relatively new technique that allows bone to be cut while preserving soft tissues, including nerves.