Orthognathic surgery involves surgery of the maxilla and mandible. Since the maxilla and mandible are in intimate association with the surrounding teeth as well as structures of the face and airway, the position and size of the maxilla and mandible significantly influence the dental occlusion, facial esthetics and airway dimension. Therefore, indication(s) for considering orthognathic surgery in order to improve the size and position of the maxilla and mandible are invariably aimed at improving dental occlusion, facial esthetics and airway dimension.
The treatment plan for orthognathic surgery is usually formulated by the surgeon and the orthodontist. In general, orthodontic treatment is first initiated, which occurs 9-12 months prior to orthognathic surgery. Post-surgical orthodontics is required and usually starts 6-8 weeks after surgery. The duration of post-surgical orthodontics can vary between 3 to18 months.