Ding Yun, Xu Tian-Min, Lohrmann Bettina, Gellrich Nils-Claudius, Schwestka-Polly Rainer
The 2nd Dental Center, Hospital of Stomatology, Peking University, Beijing, PR China.
J Orofac Orthop. 2007 May;68(3):245-56. doi: 10.1007/s00056-007-0632-2.
The aim of the present study was to evaluate the long-term skeletal and dento-alveolar stability 15 years after combined orthodontic and surgical correction of skeletal anterior open bite.
Ten (8 female, 2 male) anterior openbite patients who had undergone orthodontic treatment in combination with bimaxillary surgery at Hanover Medical School were examined. Each patient had undergone Le Fort I osteotomy combined with bilateral sagittal split osteotomy (BSSO); osteosynthesis with plates and screws was carried out in the maxilla, and wire-osteosynthesis in the mandible. Cephalometric records of these patients were examined immediately before the start of the orthodontic treatment (T1), before surgery (T2), immediately after surgery (T3), medium-term after surgery, averaging 1.5 years (T4), and long-term after surgery, averaging 15 years (T5). Hasund cephalometric analysis was performed for which skeletal and dental cephalometric measurements had been taken.
Moderate skeletal relapse was observed 15 years after surgery. Overbite remained quite stable 15 years after surgery, which is mainly due to the upper and lower incisors' eruption over the long-term period.
Treatment of skeletal open bite via Le Fort I and bilateral sagittal split osteotomy appears to be a clinically successful procedure providing stable results.
本研究旨在评估正畸与外科联合矫治骨骼性前牙开颌15年后的长期骨骼及牙-牙槽稳定性。
对10例（8例女性，2例男性）在汉诺威医学院接受正畸与双颌手术联合治疗的前牙开颌患者进行检查。每位患者均接受了Le Fort I型截骨术联合双侧矢状劈开截骨术（BSSO）；上颌采用钢板螺钉内固定，下颌采用钢丝骨内固定。在正畸治疗开始前（T1）、手术前（T2）、手术后即刻（T3）、术后中期（平均1.5年，T4）以及术后长期（平均15年，T5）对这些患者进行头影测量记录。进行了Hasund头影测量分析，并获取了骨骼和牙齿的头影测量数据。
术后15年观察到中度骨骼复发。术后15年覆合保持相当稳定，这主要归因于上下切牙的长期萌出。
通过Le Fort I型截骨术和双侧矢状劈开截骨术治疗骨骼性开颌似乎是一种临床成功的方法，能提供稳定的效果。
