Some wear braces to change the face shape. Dentofacial deformities that can change the face shape are: 1, crowded dentition, especially two maxillary canines protruding from the gums, which will make the face shape have two convex parts in the middle of the face. Through orthodontic correction, the protruding maxillary canine will return to its normal position, the protruding part will disappear and the face shape of the face will change. 2, maxillary protrusion or mandibular protrusion, when there is maxillary protrusion, the cause of teeth is often odontogenic protrusion and bony protrusion. If it is odontogenic protrusion, correcting teeth can change the appearance and deformation of protrusion. For example, after maxillary protrusion is corrected, the face will become flat, and mandibular protrusion will change from concave to flat!