A good candidate for reconstructive jaw surgery is someone who has a medical deformity and it will benefit from implants of various types. The other much more complicated problem is when someone has sever overbite or underbite and the actual jaw or bone, or the maxilla, the upper jaw, has to be moved forward or backward, and that requires maxillofacial surgery. It involves cutting off bones, or bone grafting, very complex operation, and is done by specialists in this area, often using a maxillof
