This long-awaited new edition of the author's seminal text on orthognathic surgery includes not only a fresh new look and over a dozen new cases, but essential updates for anyone practicing orthognathic surgery. Though many of the surgical practices and techniques have not drastically changed since the previous edition, recent research has inspried new sections on airway management and orthoganthic surgery of the tempormandibular joint. The previous chapter on treatment of dentofacial deformities has now been split into two streamlined chapters on typical and complex dentofacial deformities to accommodate new cases and information, allowing a more user-friendly experience for the reader. Those familiar with the second edition will remember the illustrated step-by-step processes for patient evaluation, diagnosis, treatment planning, and surgical technqiue, and these vital resources have made it to the new text as well. From the most basic bilateral sagittal split osteotomy to complex surgery involving three-dimensional analysis, movement, and rotation of both jaws, this book will help everyone from surgical residents to experienced clinicians in managing both children and adults with dentofacial deformities, improving both function and esthetics.