1. Before mandibular angle plastic surgery, frontal and lateral X-rays of the skull should be taken so that the doctor can accurately determine the amount of bone to be removed.

2. Before mandibular angle plastic surgery, you should maintain a good mood, maintain good health, and prevent colds.

3. Before mandibular angle plastic surgery, you should do various routine physical examinations. You should stop taking aspirin, vitamin E, other blood-activating drugs, and blood-activating Chinese medicine two weeks before the operation. Surgery is not allowed during menstruation.

4. One day before mandibular angle surgery, you should take a bath, wash your face, and remove facial makeup.

5. No smoking one week before mandibular angle surgery, and no drinking three days before surgery.