First, a square face is a face that we often say is not wide but has a strong sense of lines. The chin is short and the tip of the nose is slightly raised. This mandibular angle splitting operation can be used to effectively remove the external bone of the mandibular angle without cutting off the whole mandibular angle, and good results can be achieved.

Second, the Chinese character face, wide face, strong lines, and even the face with prominent mandibular angle can effectively adopt mandibular angle resection surgery, which can effectively solve facial problems such as masticatory muscle hypertrophy.

Third, a round face, that is, a face with a short chin, a wide face but gentle lines and no prominent edges and corners, is mainly used for bone grinding surgery, and it does not need to remove any bones, with light damage and rapid recovery.