The type of mouth protrusion is 1, only the mouth protrudes and the face is not long. Generally, the face is normal, only the mouth protrudes, which can be improved by mouth protrusion surgery, and obvious results can be seen. 2, the mouth is convex and the chin is short * * * sometimes. Because the chin is short, the mouth will appear more prominent, and the upper and lower teeth will protrude differently. If the mouth is convex, it will only make the mouth look flat, so it needs to be improved by double jaw surgery in plastic surgery. 3, convex mouth and long face coexist. At the same time, when you laugh, you can see that the alveoli or the usual mouth can't be closed. In many cases, the protrusion of the mouth is not serious, but because the face is long, it will appear longer if it is not corrected together, so this situation also requires bimaxillary surgery. 4. When the mouth and chin protrude, the mandible under the nose protrudes as a whole, giving people a tough sense of masculinity. It is necessary to push the protruding mouth and jaw through bimaxillary surgery. 1, orthodontics only has protruding teeth, and only orthodontics can achieve good results, but most patients in Korea have protruding teeth and gums together and need surgery to solve them. The surgical plan will be decided and adopted according to the face shape and the degree of protrusion, and it will also shorten the treatment time. 2. When bimaxillary surgery can no longer be pulled out because the teeth have been pulled out; When the degree of protruding mouth is not serious and there is a sense of depression after receiving general protruding mouth surgery; When the chin is also prominent; Or the face is long and the gums are exposed. If there are these problems, you need to do bimaxillary surgery. 3. Three-jaw osteotomy and bimaxillary surgery are carried out together, which requires a high degree of skill. At the same time, the mouth is severely protruding and the chin is short, which requires three jaw surgery. 4. Anterior maxillary osteotomy The general protruding operation in medicine is: anterior maxillary osteotomy, which uses the method of first pulling out a canine tooth, then cutting off this part of the gingival bone and moving this part of the gingival bone and teeth as a whole.