[Orthodontic preparation for orthognathic surgery. Various specific points].

Orthodontic preparation before orthognatic surgery must straighten teeth alignment to enable correct adaptation of the upper and lower arches. It must also rectify dento-alveolar abnormalities partially responsible for the dysmorphosis and which can hinder smooth articulation of the bones. Thus before and after the operation, the orthodontist will have to prepare and monitor the surgical splints used in posterior deficiencies.