Hoffman G R, Moloney F B
Department of Maxillofacial Surgery, Princess Alexandra Hospital, Brisbane, Queensland.
Aust Dent J. 1996 Feb;41(1):21-7. doi: 10.1111/j.1834-7819.1996.tb05650.x.
Surgical repositioning of the dento-skeletal components of the middle-third of the face, combined with appropriate orthodontic treatment, can be used to improve function and aesthetics. However, the attainment of three-dimensional stability following corrective jaw surgery continues to be a major problem in the postsurgical period. This paper examines the short-term (six weeks postoperative) and long-term (12 months postoperative) horizontal skeletal stability of Le Fort I maxillary advancement in 15 patients. The mean horizontal advancement of the maxilla was 8.76 +/- 0.99 mm. Six weeks later, a mean relapse of 0.22 +/- 0.19 mm was identified. The mean relapse at long-term follow-up was 0.61 +/- 0.26 mm (6.96%). These results indicate that rigid miniplate and screw fixation of Le Fort I osteotomy undertaken to correct horizontal mid-dentofacial deficiency is both statistically and surgically predictable and stable when reviewed up to twelve months after surgery.
对面中部骨骼结构进行外科重新定位，并结合适当的正畸治疗，可用于改善功能和美观。然而，正颌外科手术后三维稳定性的维持在术后阶段仍然是一个主要问题。本文研究了15例患者行Le Fort I型上颌骨前徙术后短期（术后六周）和长期（术后12个月）的水平骨骼稳定性。上颌骨的平均水平前徙量为8.76 +/- 0.99毫米。六周后，发现平均复发量为0.22 +/- 0.19毫米。长期随访时的平均复发量为0.61 +/- 0.26毫米（6.96%）。这些结果表明，为纠正水平牙颌面缺损而进行的Le Fort I型截骨术采用坚固微型钢板和螺钉固定，在术后长达十二个月的复查中，在统计学和手术方面都是可预测且稳定的。
