Zygomatic chisel is generally suitable for patients with anterolateral facial protrusion. Intraoral incision is often used to separate and expose the subperiosteal zygomatic bone, and special instruments are used to chisel and thin the zygomatic bone designed to be removed before operation, thus reducing the external contour of the face and improving the face shape. The biggest advantage of this kind of operation is that there is no scar and no trace after operation. However, the difficulty of three-dimensional osteotomy of zygomatic bone is greatly increased, which is suitable for patients with prominent zygomatic arch. In addition to the intraoral incision, it is usually necessary to make an auxiliary incision in the hidden part of the hairline, or simply make a coronal incision in the scalp. After the whole cheekbone is separated and exposed under the periosteum, according to the needs of computer three-dimensional simulation design, bone blocks with a specific size are cut off, and then the separated bone blocks are reconnected and molded with special materials such as titanium nails, which can change the whole facial contour and facial shape to the maximum extent, and even make the patient achieve the effect of "reborn".
In addition to zygomatic reduction, for a small number of patients, local depression in the middle face or bilateral zygomatic asymmetry caused by congenital or acquired diseases can be improved by autologous tissue transplantation or zygomatic augmentation with prosthetic materials.