下颌骨个性化手术钛板的设计与制造技术研究  

Study on design and manufacturing technology of titanium mandible custom-fitting surgical guides

作　　者：黄宏 张弓[2] 彭忠凯 盛亚[2,3] 张鹏 黄达鸿 

机构地区：[1]湛江南方口腔医院,广东湛江524005 [2]广州中国科学院先进技术研究所 [3]广东工业大学机电工程学院 [4]佛山市口腔医院

出　　处：《口腔疾病防治》2016年第7期402-406,共5页Journal of Prevention and Treatment for Stomatological Diseases

基　　金：国家自然科学基金(51307170);佛山市院市合作项目(2014HT10008);湛江市非资助科技攻关项目(2015B01036)

摘　　要：目的探讨应用CT扫描、计算机辅助设计(computer aided design,CAD)和选择性激光熔化技术(selective laser melting,SLM),并结合有限元分析技术,设计与制造与患者下颌骨高度匹配的纯钛个性化手术钛板,实现无模制造。方法运用CT扫描与Solidworks三维建模软件,构建个性化手术钛板模型,然后导入Ansys Workbench 14有限元分析软件,采用非线性接触方式进行仿真分析,最后将模型导入成型SLM设备中,采用高速扫描振镜,层层循环扫描,熔化钛粉层,成型为纯钛个性化手术钛板。结果下颌骨和手术钛板的最大等效应力分布均匀合理,SLM成型后的纯钛个性化手术钛板精度好、致密度高。结论把CT、CAD、有限元分析与SLM技术相结合,可实现手术钛板的个性化无模制造。Objective To explore the technology of combination with computed tomography（CT）, computer aided design（CAD）, finite element analysis（FEA）, and Selective Laser Melting（SLM） in manufacturing a titanium custom-fitting surgical guide well matched with the patient mandible in order to realize mold-free manufacturing. Methods A model of a custom-fitting surgical guide was built by CT scanning machine and Solidworks software, and then the model was imported into Ansys software to carry out simulation analysis with nonlinear contact method. Finally, the model above was imported to SLM molding equipment, the titanium custom-fitting surgical guide was proposed via titanium powder melted with layer by layer using a high-speed scanning galvanometer. Results The maximum equivalent stress of the mandible and surgical guide was distributed uniformly and reasonably, the titanium custom-fitting surgical guides formed by SLM molding equipment provided high accuracy and high density. Conclusion The combination of CT,CAD, FEA, SLM technology can fulfill mold-free manufacturing of surgical guides and the manufacturing cycle is shorten as well.

关 键 词：钛 个性化 选择性激光熔化 下颌骨 有限元分析 

分 类 号：R782[医药卫生—口腔医学]