计算机辅助设计定制羟基磷灰石/医用树脂假体重建颅颌面外形的应用

Application of computer-aided design of customized hydroxyapatite / medical resin prosthesis for reconstruction of craniofacial shape

目的探讨计算机辅助设计定制羟基磷灰石假体/可塑性医用树脂对恢复颧上颌骨畸形患者外形的精确性及安全性。方法选择2008年1月至2014年3月上海交通大学医学院附属第九人民医院颅颌面缺损畸形患者17例,其中男性5例,女性12例;年龄18~44岁,平均年龄25.6岁。接受计算机辅助设计定制羟基磷灰石假体治疗。术后6个月CT扫描重建影像与术前虚拟设计进行几何学差异分析,判断植入物设计的精确性,并统计患者并发症的发生。结果 17例患者中,除1例因术后反复感染取出植入物外,余16例恢复良好,均未发生严重并发症。几何学差异分析显示,差异率为90.5%±3.1%,患者对面型表示满意。结论计算机辅助设计定制羟基磷灰石假体/可塑性医用树脂治疗颅颌面缺失具有较高的精确性和安全性,可为颅颌面缺损修补的推荐方案之一。

Objective To investigate the efficiency and safety of computer-aided design / computer-aided manufacturing hydroxyapatite / epoxide acrylate maleic in treatment of craniomaxillofacial bone defects. Methods A total of 17 patients with craniomaxillofacial bone defects were enrolled, which included 5 males and 12 females, aged 18- 44 years old with mean age of 25.6years old. All of them were treated with compute-aided design / computer-aided manufacturing hydroxyapatite / epoxide acrylate maleic from January 2008 to March 2014. The geometry difference analysis was performed between CT scanning image reconstruction and preoperative virtual design after 6-month operation. The accuracy of implant and complications were documented. Results Sixteen cases were recovery but due to postoperative recurrent infection 1 case removal implant without severe complication occurred. The geometry differences analysis showed differences rate was 90.5 % ± 3.1 %, and the patients were satisfied. Conclusion It is demonstrated that computer-aided design / computer-aided manufacturing hydroxyapatite /epoxide acrylate maleic is an efficient, accurate and safe method to craniomaxillofacial deformities, which is one of the recommended schemes for repairing craniomaxillofacial defect.