Mandibular angle surgery is to make an incision in the oral mucosa, use a special endoscope to directly see the outline of the bone, and use a surgical saw to cut off the mandibular angle from above the angled mandibular angle to below the vertical line of the corner of the mouth. And because it is done inside the mouth, there will be no scar after operation. This operation is mature in Korea, so it is best to find an experienced Korean doctor. You can find Zheng Dean at Syndicate Plastic Surgery Hospital in South Korea. Their Zheng Dean is a senior plastic surgeon in South Korea. The mandibular angle plastic surgery was performed by Zheng Dean himself, and the plastic technique was first-class. There's no problem finding him. You can go and have a look.