Orthognathic surgery is a procedure which involves moving the upper jaw (maxilla) and lower jaw (mandible) to an anatomically correct position, which allows for a good occlusion (bite), opening of the airway and facial symmetry. Patients who require orthognathic surgery are patients that exhibit a bad bite (malocclusion), facial asymmetry or have moderate-to-severe sleep apnea. It is important to correct these conditions, as they may be the root causes for improper chewing, facial dysfunction, speech issues, joint pain, and sleep disorders.