Iannetti Giorgio, Fadda Maria Teresa, Marianetti Tito Matteo, Terenzi Valentina, Cassoni Andrea
Maxillo Facial Surgery Department, Policlinico Umberto I, II Faculty of Medicine, University of Rome La Sapienza, Viale del Policlinico, Rome, Italy.
J Craniofac Surg. 2007 Mar;18(2):350-4. doi: 10.1097/01.scs.0000248658.38158.d2.
Many reports have paid attention to skeletal stability after orthognathic surgery, but only few focalize attention on patients with III class III malocclusion and open bite. In this article, long-term stability (2 yr) of the maxilla and the mandible after orthognathic surgery in 40 patients with class III malocclusion and anterior open bite is evaluated. The sample has been obtained from those 420 patients with class III malocclusion treated with Le Fort I osteotomy isolated (group A, 20 patients) or in association with bilateral sagittal split osteotomy (group B, 20 patients) from 1985 to 2003. On the basis of cephalometric analysis obtained in the immediate postoperative period and 2 years after surgery, in class III patients with anterior open bite treated with mono- or bimaxillary surgery and stabilization with rigid internal fixation, the maxilla was demonstrated to remain in the postsurgical position, whereas a moderate rate of mandibular relapse dependent on the amount of surgical alteration of the mandibular position was present.
许多报告都关注正颌外科手术后的骨骼稳定性，但只有少数报告聚焦于Ⅲ类错颌和开颌患者。本文评估了40例Ⅲ类错颌和前牙开颌患者正颌外科手术后上颌骨和下颌骨的长期稳定性（2年）。该样本取自1985年至2003年接受单独Le Fort I截骨术（A组，20例患者）或联合双侧矢状劈开截骨术（B组，20例患者）治疗的420例Ⅲ类错颌患者。根据术后即刻和术后2年获得的头影测量分析，在接受单颌或双颌手术并采用坚固内固定稳定的Ⅲ类前牙开颌患者中，上颌骨被证明保持在术后位置，而存在一定程度的下颌骨复发，其复发率取决于下颌骨位置的手术改变量。
