1. The mandibular angle is obviously hypertrophy and eversion, which is an obvious "square face" or "trapezoidal face".
2. Unilateral or bilateral mandibular angle is prominent, and both sides are asymmetrical.
3. The width ratio of the upper and lower surfaces is not harmonious, and the distance between the two mandibular angles is close to or greater than the width between the two zygomatic processes.
Mandibular angle hypertrophy is medically called mandibular angle hypertrophy or square face deformity. This kind of face is out of tune with the aesthetics of orientals. Especially women, oriental women advocate oval face or oval face. In addition to the aesthetic standard of "three courts and five eyes" and the golden ratio, the face should also have beautiful curves. The upper part of the face (that is, the width of the temporal bone or the distance between temples), the middle part of the face (the distance between the outer edges of the zygomatic arches on both sides) and the lower part of the face (that is, the distance between the outermost points of the two mandibles) should have a proper proportion and be coordinated with the length of the face.