选择性激光熔覆(SLM)钛合金可摘局部义齿支架的适合性研究

Study on the fit of titanium alloy removable partial denture framework fabricated by selective laser melting

目的:评价选择性激光熔覆(SLM)技术制作的钛合金可摘局部义齿的适合性。方法:用选择性激光熔覆(SLM)技术制作7个肯氏Ⅲ类Ti-6Al-4V可摘局部义齿支架,采用光学扫描仪分别扫描通过"印模法"得到的粘附有硅橡胶薄膜的石膏模型,以及去除该薄膜的石膏模型的光学印模,导入Geomagic Qualify软件,通过3D比较功能分析支架大连接体组织面与模型之间的间隙,对其适合性进行评价。结果:钛合金支架与模型之间的总体3D偏差值为(0.221 9±0.07)mm。结论:SLM技术制作的钛合金可摘局部义齿支架的适合性基本满足临床要求。

Objective：To evaluate the fit of titanium alloy removable partial denture framework fabricated by selective laser melting（SLM） technique.Methods：7 Kennedy Ⅲ Ti-6Al-4V removable titanium alloy partial denture frameworks were fabricated by SLM technology.An optical scanner was used to scan the gypsum model adhered with the silicone rubber film obtained by the ＆quot;impression method＆quot; before and after removal of the film.Geomagic Qualify 2013 software was used to analyze the gap between the model and the tissue surface of the major connector of the framework,the fit of the frame work was evaluated.Results：The overall 3D deviation between the titanium alloy frameworks and the gypsum model was （0.221 9±0.07） mm.Conclusion：The fit of the titanium alloy removable partial denture framework made by SLM technology can basically met the clinical requirements.