选区激光烧结成型技术在鼻赝复体制作中的应用

探索了选区激光烧结(SLS)技术制作鼻赝复体蜡模型的可行性.通过结构光扫描、计算机辅助设计(CAD)制作患者的鼻赝复体数字化模型;应用特定工艺参数进行选区激光烧结,制作出鼻赝复体蜡型.经测量评价加工精度及临床试戴,蜡型具有良好的外形和精度,达到了临床应用的制作要求.将蜡型翻制成最终的硅橡胶赝复体,获得了满意的临床效果.该技术与临床常规方法相比,节约了时间和材料,简化了工艺步骤,实现了数字化、无模化制作,为颌面赝复体自动化加工制作开辟了一种新的方法.

Application of Selective Laser Sintering in Fabricating Nasal Prostheses

To explore the feasibility of fabricating nasal prosthesis with selective laser sintering method,a digital model of nasal prostheses for patients was produced through the integration of structural light scanning and CAD technique.A wax model of nasal prostheses was fabricated with selected sintering method under special manufacturing parameters.The result of accuracy evaluation and clinical try-in showed a satisfying shape of wax model and a comparatively high precision.Then the wax pattern was processed into the definitive nasal prosthesis and a clinically satisfying effect was achieved.Comparing with conventional manual methods,the new fabricating method shortens time and simplifies manufacturing steps.This digital and model-free manufacture provides a new method for the automatic manufacture of maxillofacial prostheses,and has potential for the clinical application in the future.