What time can I make an appointment for orthognathic surgery? How do I make an appointment for hospitalization? What information do I need to prepare? …… because from the beginning of facial jaw development in adolescence, the jaws deviate from their normal trajectory of growth, resulting in a gradual increase in dental disorders. In adulthood, combined orthognathic-orthodontic treatment requires 3 stages: preoperative orthodontic – orthognathic surgery – postoperative orthodontic. The goal of orthognathic surgery is to restore the shape and position of the jaws in appearance after cutting and grinding, then the teeth between the upper and lower jaws will almost always affect the placement of the jaws, so preoperative orthodontic alignment of the teeth is needed, i.e. the degree of tooth disorder determines the length of preoperative orthodontics. A few months after orthodontic treatment begins, you can consult with the treating orthodontist and ask them to anticipate approximately how long pre-surgical orthodontic treatment will take. Some of the malocclusions can be opened earlier if they can be adjusted after surgery.