Under normal circumstances, orthognathic surgery is mainly aimed at people with abnormal occlusal relationship, such as so-called "floor cover", "tooth exposure" and "jaw plane deviation".
Most operations are performed in the mouth. The basic principles of facial scar surgery without incision are bone cutting, jaw straightening and fixation.
Most of these operations are performed after the bones are mature, and a few patients need early surgical intervention, such as hemifacial hypoplasia.
When people's eating habits change (such as the reduction of crude fiber food) and the food is too nutritious to develop prematurely, the development of human jaws will be unbalanced. At present, many people in the normal population are accompanied by abnormal occlusion, but everyone does not realize that this is a pathological state.