Depending on the cause of the convexity of the mouth, such as dental convexity or bony convexity, the convexity of the mouth can be improved through orthodontic treatment and orthognathic surgery. 1. Dental Convexity: If the convexity of the mouth is due to the outward growth of teeth, such as buck teeth, the convexity of the mouth can be improved through orthodontic treatment, and the persistent wearing of braces can improve the problem of malocclusion or misalignment of teeth and achieve effective improvement of the convexity of the mouth. 2. Bony Convexity: Bony Convexity is difficult to distinguish, and it needs to be diagnosed by a professional doctor through measurement data. Since orthodontics cannot play an obvious role in bone deformity, orthognathic surgery is needed to have a greater improvement. Therefore, if you want to improve your convexity, you must consult an orthodontist in a regular hospital to find out the cause of convexity, and actively cooperate with the orthodontic program formulated by the doctor to standardize the treatment.