Carpenter C W, Nanda R S, Currier G F
Department of Orthodontics, University of Oklahoma, Oklahoma City 73190.
J Oral Maxillofac Surg. 1989 Sep;47(9):922-5. doi: 10.1016/0278-2391(89)90374-1.
Twenty subjects receiving Le Fort I downfracture osteotomies stabilized with rigid fixation were studied for relapse. The analysis was based on longitudinal cephalometric radiographs taken within 2 weeks presurgically, 1 week postsurgically, and after a minimum period of 6 months postsurgically. Vertical and sagittal changes in the maxilla were evaluated in reference to the Frankfort horizontal plane. It was found that the mean postsurgical relapse was minimal and not significant. It was smaller than that reported for patients who had received stabilization of the maxilla with intraosseous and maxillomandibular wiring. It was concluded that the rigid fixation technique is dependable and yields stable postsurgical results in the maxilla.
对20名接受了坚固内固定的Le Fort I型下颌骨切开术的受试者进行了复发情况研究。分析基于术前2周内、术后1周以及术后至少6个月时拍摄的纵向头颅侧位片。以上颌骨相对于法兰克福水平面来评估上颌骨的垂直和矢状向变化。结果发现，术后平均复发量极小且不显著。该复发量小于接受骨内固定和颌间结扎固定上颌骨的患者所报告的复发量。得出的结论是，坚固内固定技术可靠，能在上颌骨手术中产生稳定的术后效果。
