摘要
目的采用三维CT影像对下颌前突：上颌发育不足患者的上颌硬组织进行测量分析，以期为临床Le Fort I型截骨术提供指导。方法2009年6月至2011年2月在中国医科大学附属口腔医院就诊的40例患者，随机分为2组，20例行上颌骨Le Fort I型截骨的患者作为实验组，20例单纯下颌骨骨折为对照组，进行颅颌面部CT扫描。应用软件Surgicase5．0对颅颌面部CT影像进行三维重建后，测量腭降动脉和翼板相关结构，并对所得数据进行统计学分析。结果梨状孔边缘至翼腭管的距离实验组平均为（33．74±6．74）mm，对照组平均为（35．67±7．50）mm，二者比较，差异有统计学意义（P〈0．05）。而翼上颌连接的高度，实验和对照组比较，差异无统计学意义（P〉0．05）。结论下颌前突，上颌发育不足患者行Le Fort I型截骨的安全距离约为32mm，在手术过程中应注意控制骨切开深度；有必要对Le Fort I型截骨术患者术前拍摄上颌骨CT及进行相关测量为手术提供指导。
Objective To analysis the maxillary bony structures by three-dimensional CT in maxillary retrognathism patients so as to provide information for Le Fort I osteotomy. Methods 20 maxillary retrognathism patients underwent Le Fort I osteotomy, while 20 patients with simple mandibular fractures were included as control group. All the patients received Skull 3-D CT before operation. The measurement about descending palatine artery and wing palatal was performed by Surgicase 5.0. The data were analyzed statistically. Results The average distance from the piriform aperture margin to wing palatal tube was （33.74 ＋6. 74） mm in the retrognathism group; while （35.67 ＋7.50） mm in the control group, showing a significant difference between the two groups（ P 〈 0. 05 ）, but there was no statistically difference in the height of pterygomaxillary junction between the two groups. Conclusion The safe depth for Le Fort I osteotomy in patients with hypoplasia maxilla is 32 mm. CT scanning can provide guidance for osteotomy.
出处
《中华整形外科杂志》
CAS
CSCD
北大核心
2012年第6期420-423,共4页
Chinese Journal of Plastic Surgery
关键词
上颌骨
成像
三维
截骨术
勒福
咂
Maxilla
Imaging, three-dimensional
Osteotomy, Le Fort
