1.What is the surgery-first orthognathic surgery method? The surgical-first orthognathic approach eliminates the need for lengthy and painful preoperative orthodontics, and this approach minimizes the orthodontic time during the combined orthognathic-orthodontic treatment to correct jaw deformities. 2.Why choose the surgery-first orthognathic surgery method? Traditional preoperative orthodontics is a long and painful process, and during the treatment period, it will produce a certain degree of unsatisfactory results on occlusal function and facial aesthetics. The advantages of surgical orthognathic surgery are: (1) No need for preoperative orthodontics, and the speed of postoperative orthodontics is significantly accelerated, which significantly shortens the course of treatment and brings great convenience to your work, study and life; (2) Change the aesthetics of the face in a short period of time. (2) No need for long preoperative orthodontic treatment, but directly into orthognathic surgery treatment, in a short period of time to improve your facial deformity, providing great convenience for your social interaction; (3) treatment time is more free, you can choose to perform orthognathic surgery at any time; (4) no long preoperative orthodontic decompensation period, less adverse impact on the aesthetics of the face.