Orthognathic surgery. American Association of Oral and Maxillofacial Surgeons.

Orthognathic surgical corrections of deformities and defects are performed to establish normal functional relationships between osseous, muscular, and contiguous structures. At times, aesthetics will be improved, but this psychosocial improvement is an additional benefit as long as correction of the functional aspects of the skeletal deformity constitutes the criteria for surgical intervention.