Retrospective Study of Orthognathic Surgery for Dentofacial Deformitiy in 289 Patients

Objective: To investigate the methods of treatment for the dentofacial deformity to achieve satisfactory facial appearance and occlusal relationship in the patients who were treated by orthognathic surgery.Methods: 289 cases of dentofacail deformity which had been treated by orthognathic surgery in our department were collected.The classification and diagnosis of the deformity and the effects of therapy were investigated.Clinical examination and radiographs were taken before and after surgery,temporomandibular joint(TMJ) function,and inferior alveolar nerve function were evaluated. Results: 449 operations were used to correct dentofacial deformity,most of the patients achieved satisfactory appearance and function.The wound of 282(282/289) cases obtained primary healing;the other cases got good results after dressing change or operation again.The most frequent complication was impairment of inferior alveolar nerve(12/289),the second was malocclusion(10/289).Other complications were rare.Conclusion: The surgical treatment of dentofacial deformity must be chosen according to different types and locations,clinical emaminatin,cephalometric radiograph analysis,model surgery,visual treatment objective and use both orthodontics and orthognathic surgery.