Sarver D M, Weissman S M
Department of Orthodontics, University of Alabama, Birmingham.
Angle Orthod. 1991 Winter;61(4):267-76. doi: 10.1043/0003-3219(1991)061<0267:LSTRTL>2.0.CO;2.
The purpose of this study was to compare short-term (approximately 12 months postoperatively) and long-term (24 to 81 months postoperatively) records of 36 patients who underwent superior repositioning of the maxilla via LeFort 1 osteotomies. The parameters of measurement were set up to analyze the net response of the soft tissues of the face to superior repositioning of the maxilla. The results of this study show that soft-tissue changes associated with maxillary impaction are minimal and that no significant differences exist between twelve-month records and five-year records.
本研究的目的是比较36例通过勒福Ⅰ型截骨术进行上颌骨上移的患者的短期（术后约12个月）和长期（术后24至81个月）记录。设定测量参数以分析面部软组织对上颌骨上移的净反应。本研究结果表明，与上颌骨牵引相关的软组织变化极小，且12个月记录和5年记录之间不存在显著差异。
