Sufficient physical and psychological preparations should be made before mandibular angle plastic surgery, mainly in the following aspects:

1. Ensure good health, without organic diseases of important organs and systemic inflammation. No source of oral infection, such as dental caries, periodontitis, oral ulcer, etc. ;

2. 4-6 weeks before the operation, carry out a detoxification work. Quit smoking alcohol, sugar, tea and coffee, and limit the consumption of processed food and dairy products;

3. Understand the contents of the operation and have a correct understanding of the possible impacts and risks of the operation;

4. Because it takes some time to recover the mandibular angle after operation, it is suggested to choose a reasonable time. Women should avoid menstrual period.

To carry out mandibular angle plastic surgery, we must choose a regular hospital with technical advantages to ensure the quality of surgery and personal safety.