Square mandibular angle, mandibular angle shaping, mandibular chin padding, chin pouting, maxillary protrusion correction, maxillary protrusion correction, etc. Long curve mandibular angle osteotomy is a one-time osteotomy that uses a special endoscope to design the surgical osteotomy line, and then directly sees the outline of the bone, and then starts from above the angled mandibular angle to below the vertical line of the corner of the mouth.