1. If it is a simple bimaxillary protrusion, a few teeth are removed by extraction correction in clinic, leaving a gap, and the protruding teeth are stored in the normal position, thus changing the face shape and changing the mouth protrusion;

2. Some patients' bimaxillary protrusion is bony bimaxillary protrusion, that is, the teeth are not prominent and stand upright in the maxilla, but the maxilla and maxillary bone protrude outward relative to the musculoskeletal structure of the skull. For this kind of patients, there may be no way to extract teeth during orthodontics, and the teeth can only be extracted together with the bones under the teeth during surgery to solve the problem of bony bimaxillary protrusion. Therefore, whether bimaxillary protrusion needs tooth extraction is not generalized.