Hello 1, facial swelling may last for two weeks to a month; Active ice can prevent or slow down. 2, wound bleeding, hematoma or skin abrasion device drainage tube and the use of elastic band is to prevent or slow down these problems. Avoid massaging the wound prematurely to prevent massive bleeding. 3. A few patients with insensitivity around cheeks or mouth will have this situation, because the wound is swollen after operation and the facial sensory nerve is compressed. Avoid overheated food and prevent accidental burns. It usually takes two to four weeks, and the wound will recover after the swelling subsides. In rare cases, the "inferior orbital nerve" or "inferior alveolar nerve" will be damaged, resulting in permanent sensory paralysis around the mouth or cheeks. Experienced doctors can avoid such injuries, so choosing regular hospitals and doctors with good reputation before operation is the best way. 4, facial nerve injury Temporary facial paralysis is caused by normal traction or swelling of the wound during surgery; The disappearance of frontal line may occur in zygomatic surgery. There may be asymmetry in the corners of the mouth during mandibular surgery. The probability of occurrence is not high, and it will slowly recover after two to three months. The probability of permanent facial nerve injury is very low, which is mostly related to mandibular surgery. Many professionally designed intraoral surgical instruments can avoid this sequela. 5. It is difficult to open your mouth because the masticatory muscles are swollen or the wound is swollen; It will recover slowly after the swelling is reduced, and it will take about two weeks. What adverse reactions will appear after mandibular angle plastic surgery? It can be seen from the above symptoms that mandibular angle plastic surgery is really a very big plastic surgery. In order to prevent surgical failure or complications, beauty lovers must go to regular hospitals.