The mandible plays an important role in facial esthetic, balance and beauty, as well as the important motions necessary for food consumption and speech. This book provides a practical, easy to follow step by step approach to the bilateral sagittal split mandibular ramus osteotomy. The importance of the three dimensional aspects of the mandible is highlighted as part of the systematic evaluation and treatment of dentofacial deformities. The surgical techniques for the successful completion of this procedure, including the authors comments, relevant tips and a listing of traps that may lead to poor results or complications, serve as a guide, for not only residents and beginning surgeons, but also as a helpful resource for experienced surgeons.