When the mouth is convex, the following treatment measures can be taken separately: 1, when the upper and lower front teeth are mildly protruding and the soft tissues are more plump, some of the labial enamel can be abraded and all-ceramic veneers can be made to restore the crown inward. 2, when the front teeth are obviously labially inclined, dental preparation can be performed to adjust the direction of the long axis of the teeth and make porcelain or all-ceramic crowns to restore them. 3, in addition to dental protrusion, when there are open lips and exposed teeth and other phenomena, it is best to perform In addition to tooth protrusion, there are also open lips and teeth, it is best to carry out orthodontic treatment, remove wisdom teeth and bicuspids, pull the front teeth to move to the far middle, and depress the clinical crown, adjust the facial shape for straight face type. 4, dental protrusion accompanied by bony protrusion, but also need to carry out whole jaw surgery, grinding out excessive alveolar bone, thoroughly improve the facial appearance.