【摘要】目的：探讨计算机辅助制作快速原型对正颌手术病人术中颌骨截骨的指导意义。方法：20例病人术前根据CT数据制作快速原型，原型上模拟截断上下颌骨，弯制钛板，手术中指导上下颌骨截骨。术后半年评价手术效果。结果：20例病人手术顺利，术后效果满意。合平面基本水平，面部基本对称。结论：快速原型模拟截骨可以精确指导正颌手术的截骨位置及截骨量。

    【关键词】计算机辅助技术；快速原型技术；正颌外科

    【Abstract】Objective：Using computer software to design the operation plan on patients with asymmetry deformities，then make rapid prototyping in order to evaluate the curative effect after operation using this technology.Methods：All patients’ rapid prototyping are maded from CT date.Imitating to cut bone on Rapid prototyping.Data was obtained and used to guide the operation.Finally evaluate the operative effect half a year after operation.Results：The 20 patients obtained satisfactory results and facial deformities were corrected successfully.The biteplane was horizontal.The face was symmetric.Conclusion：Rapid prototyping technology was helpful to guide the operation.

    【key words 】Computer-aided design；Rapid prototyping technology；orthognathic surgery

    【中图分类号】R782 【文献标识码】B【文章编号】1004-4949(2014)04-0078-01

    计算机技术、影像学技术、3D打印技术的快速发展给正颌外科的术前诊断、制定手术计划等带来了巨大的改变[1] ......