Yes, let's make a chin plastic, which is also mandibular angle plastic surgery. The ascending ramus of mandibular margin is too long, resulting in an angle less than 120, which is seriously at right angles. By cutting off too many "angles", the angle can be returned to 120, and the curve is smooth. The operation time is short. Mainly aimed at the hypertrophic mandible, the ascending branch of mandibular angle (exoskeleton) was ground off.