Through distraction osteogenesis slow movement and orthognathic surgery immediate movement virtually every kind of facial deformity is treatable in a reasonable period of time dr bell a prime mover in oral and maxillofacial surgery has collected contributions from first class academicians and practitioners in the field for this lavishly illustrated volume. The application of bone distraction to the facial skeleton has been largely derived from prior work in the lower extremity and the fundamental biologic concepts of distraction osteogenesis must be thoroughly understood before the extension of this work to the facial skeleton can be consistently applied successfully. Distraction osteogenesis is used to expand the facial skeleton in children with congenital micrognathia or midface hypoplasia 93 distraction osteogenesis allows large advancements without the need for bone grafting and with less risk of relapse. Distraction osteogenesis has provided a powerful technique for the treatment of severe midfacial hypoplasia skeletal fixation is a critical component of successful distraction osteogenesis