The most common situations where a
patient may require Orthognathic Surgery are:
1.The lower jaw is too small and is set too far back resulting in a severe “overbite” and
recessive chin. Surgery is usually performed
2.The lower jaw is too big and is set too far forward and the upper jaw is too small resulting in an “underbite”. In these cases surgery is often required to reduce the prominence of the lower jaw and advance the position of the upper jaw.
3.The lower jaw is diverging from the upper jaw resulting in an openbite or lack of vertical
overlap of the front teeth. Surgery is usually
performed on the upper and lower jaw to allow the lower
jaw to fully close against the upper.
4.Facial asymmetry or deformities resulting from genetic, developmental and traumatic influences