Mandibular angle plasty is performed under local anesthesia. The extraoral incision is a 2 cm incision in the hidden part of the chin. Because of the direct surgical approach and good surgical posture, the hypertrophic mandibular horn bone can be removed and part of the masseter muscle can be removed. If necessary, you can also suck some cheek fat. The disadvantage is that there will be a fine line mark of about 2 cm below the mandibular body. The characteristics of intraoral incision are: facial skin does not leave any trace, but the operation is complicated, which requires a professional miniature chainsaw and has high requirements for surgeons. At present, intraoral incision is generally used, and some of them are combined with intraoral and extraoral incision. I found all this knowledge from the internet. If you want to know more, you can go to this blog and click the link to consult an expert. I believe they will give you a satisfactory answer. /zt/glx.php？ Location = temperature.