The fracture sites involved in the oral and maxillofacial region are mainly located in the upper and lower jaws, while maxillary fractures, especially comminuted multiple fractures, are difficult to carry out in some hospitals due to the high treatment difficulty, and the common fixation sites on the model are now shown, and 90% of the titanium plates are clinically applied in this way. Liu Chao, Department of Oral and Maxillofacial Surgery, Qilu Hospital, Shandong University