Garrison B T, Lapp T H, Bussard D A
J Oral Maxillofac Surg. 1987 Sep;45(9):761-6. doi: 10.1016/0278-2391(87)90196-0.
A retrospective study was performed on 20 patients who had been treated with Le Fort I maxillary osteotomies and simultaneous alveolar cleft bone grafts. The age range was 11 to 23 years, and there were 11 males and nine females. Changes in both anterior-posterior (A-P) and vertical direction were investigated using preoperative, immediate postoperative, and long-term postoperative lateral cephalometric radiographs. The results indicated little change between the immediate postoperative and long-term postoperative position of the maxilla in an A-P dimension, but in a vertical direction there was a great tendency for relapse.
对20例行勒福Ⅰ型上颌骨截骨术并同期牙槽突裂植骨术的患者进行了回顾性研究。年龄范围为11至23岁，其中男性11例，女性9例。使用术前、术后即刻和术后长期的头颅侧位X线片，研究前后（A-P）和垂直方向的变化。结果表明，上颌骨在A-P维度上术后即刻和长期位置之间变化不大，但在垂直方向上有很大的复发倾向。
