Orthognathic surgery is performed on the bones of the jaws to change their positions. Orthognathic surgery is corrective facial surgery where deformities of the jaw exist. It may be indicated for functional, cosmetic, or health reasons. It is surgery commonly done on the jaws in conjunction with orthodontic treatment, which straightens the teeth.

Orthognathic surgery is needed when the bones of the jaws are not correctly aligned and consequently the teeth do not fit together properly. jaw growth is a gradual process and in some instances, the upper and lower jaws may grow at different rates. This causes problems that can affect chewing function, speech, long-term oral health, and appearance. Teeth are straightened with orthodontics, and corrective jaw surgery repositions the misaligned jaws. This not only improves facial appearance, but also ensures that teeth meet correctly and function properly.