Nooh Nasser
Department of Oral and Maxillofacial Surgery, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia.
Saudi Dent J. 2009 Oct;21(3):123-6. doi: 10.1016/j.sdentj.2009.10.003. Epub 2009 Oct 29.
Relapse is one of the complications of orthognathic surgery. In this study, we compared the stability of mandibular bilateral sagittal split osteotomy by using two different methods of fixation. In Group 1, eight patients with prognathic mandible underwent BSSO and set back average of 6.0 mm. The method of fixation was positioning screws. In Group 2, eight patients with prognathic mandible underwent BSSO and set back average of 6.0 mm. The method of fixation was plate and monocortical screws. In Group 3, eight patients with retrognathic mandible underwent BSSO and advancement average of 6.0 mm. The method of fixation was positioning screws. In Group 4, eight patients with retrognathic mandible underwent BSSO and advancement average of 6.0 mm. The method of fixation was plate and monocortical screws. The results showed in terms of advancement that there was no significant difference between the groups after one year. However, in terms of set back, this study showed significant difference.
复发是正颌外科手术的并发症之一。在本研究中，我们通过使用两种不同的固定方法比较了下颌双侧矢状劈开截骨术的稳定性。在第1组中，8例下颌前突患者接受了双侧矢状劈开截骨术，平均后退6.0毫米。固定方法是定位螺钉。在第2组中，8例下颌前突患者接受了双侧矢状劈开截骨术，平均后退6.0毫米。固定方法是钢板和单皮质螺钉。在第3组中，8例下颌后缩患者接受了双侧矢状劈开截骨术，平均前移6.0毫米。固定方法是定位螺钉。在第4组中，8例下颌后缩患者接受了双侧矢状劈开截骨术，平均前移6.0毫米。固定方法是钢板和单皮质螺钉。结果显示，在前移方面，一年后各组之间没有显著差异。然而，在后退方面，本研究显示出显著差异。
