Within a few days after mandibular angle plastic surgery, there will be swelling and slight discomfort in the operation area, and there will also be numbness in the lips, which will make it difficult to smile and speak. Don't be nervous. These are all normal phenomena. It is important to pay attention to oral hygiene after operation. In addition, there are certain restrictions on diet. Displacement of the prosthesis due to improper movement must be avoided. For example, it is best not to eat hard-shelled food to avoid overexertion.