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。

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.