Cheah Chi-Mun, Chua Chee-Kai, Tan Kwang-Hui, Teo Chung-Kiat
School of Mechanical and Production Engineering, Nanyang Technological University, Singapore.
Int J Prosthodont. 2003 Jul-Aug;16(4):435-41.
This article presents a novel manufacturing approach that integrates laser surface digitizing/scanning and computer-aided design (CAD) and manufacturing (CAM) to achieve automated fabrication of spatially and anatomically accurate extraoral facial prostheses.
Topologic data of the patient's face, including the site of deformity and the anatomy of a healthy "donor" organ, were acquired using laser surface digitizing. Two different CAD data manipulation techniques were developed to alleviate problems encountered in laser-digitized data sets. To reduce patient involvement, fitting of the prosthesis was conducted using a computer model of the patient's face. Once finalized, rapid prototyping techniques were employed to fabricate a master pattern to cast the final prosthesis.
Three case studies involving different facial prostheses were conducted to evaluate the integrated manufacturing system. The results demonstrated the many advantages of the system for facial prosthesis production.
With the new manufacturing approach, reduced patient discomfort, minimal dependence on the artistic skills of the prosthetist, and short turnaround times for prosthesis production can be expected.
本文介绍了一种新颖的制造方法，该方法整合了激光表面数字化/扫描以及计算机辅助设计（CAD）和制造（CAM）技术，以实现空间和解剖结构精确的口腔外面部假体的自动化制造。
使用激光表面数字化技术获取患者面部的拓扑数据，包括畸形部位和健康“供体”器官的解剖结构。开发了两种不同的CAD数据处理技术，以解决激光数字化数据集中遇到的问题。为减少患者的参与度，使用患者面部的计算机模型进行假体试戴。一旦最终确定，采用快速成型技术制作母模以铸造最终的假体。
进行了三个涉及不同面部假体的案例研究，以评估该集成制造系统。结果证明了该系统在面部假体生产方面的诸多优势。
采用这种新的制造方法，预计可以减少患者的不适感，最大限度地减少对面部修复师艺术技能的依赖，并缩短假体生产的周转时间。
