How long the mandibular surgery lasts is mainly determined by yourself, mainly by your physical fitness and the degree of surgery. Generally, the suture can be removed 7- 10 days after mandibular surgery. In order to prevent postoperative infection, people fast within two days after operation, so they all rely on infusion to maintain normal physiological needs and maintain oral hygiene. They can almost fully recover in a month or so. If you get good care or good health, you can recover faster. However, mandibular angle surgery is a major operation, so I suggest that you must go to a regular plastic surgery hospital for surgery, so that the effect and safety of the operation are greatly guaranteed.