The application of cone-beam CT is leading to a paradigm shift in the diagnosis, treatment planning, and evaluation of treatment outcome in patients with maxillofacial deformity. This color atlas and manual provides clinicians with a systematic, step-by-step guide to cone-beam CT-based 3D virtual treatment planning of orthognathic surgery. The cone-beam CT 3D workflow, 3D virtual diagnosis, 3D virtual planning of orthognathic surgery, transfer of the 3D virtual treatment plan to the operating room, and 3D virtual evaluation of the treatment outcome are all explained and discussed in detail. The clinical applications of the 3D virtual approach in different types of maxillofacial deformity are clearly documented, and limitations and pitfalls are highlighted. As the first book devoted to this exciting new technique, 3D Virtual Treatment Planning of Orthognathic Surgery will be of interest to orthodontists and oral, maxillofacial, and plastic surgeons, whether novices or experts.