[Indications for orthognathic surgery, the limitations of orthodontics and of surgery].

The different sagittal, vertical or transversal skeletal dysmorphosis can be treated with orthodontic or orthopaedic appliances. Certain limits of treatment will be due to the age of the patient, the importance of the skeletal dysmorphosis, technical limits of the orthodontic appliances or the motivation and compliance needed from the patient. For this reason an orthodontic treatment combined with orthognathic surgery may be indicated. Nevertheless the combined orthodontic-surgical treatment has also its limitations and specific treatment needs from orthodontist and maxillo-facial surgeon.