De Crescenzio F, Fantini M, Ciocca L, Persiani F, Scotti R
Virtual Reality and Simulation Laboratory, Second Faculty of Engineering, Alma Mater Studiorum, University of Bologna, Forli, Italy.
Proc Inst Mech Eng H. 2011 Mar;225(3):296-302. doi: 10.1243/09544119JEIM856.
In this paper, the complete procedure to design and construct reusable moulds for implant-based ear prosthesis and manufacture substructures by means of a computer aided design-computer aided manufacturing (CAD-CAM) procedure and rapid prototyping (RP) technology is presented. The scan of the healthy ear, the virtual superimposition of its mirrored image on to the defective side, and the rapid manufacturing of the substructure and of the mould eliminate several steps of traditional procedures (wax, stone, try-in). Moreover, the precise design and customization of the substructure is presented, with the original and engineered shape for the retention of the silicone. The time and cost saving results of this protocol are presented together with a discussion of the main design features that make the prosthesis a stable and reproducible system to improve rehabilitation of patients with auricular defects or absence.
本文介绍了设计和构建用于植入式耳假体的可重复使用模具，并通过计算机辅助设计-计算机辅助制造（CAD-CAM）程序和快速成型（RP）技术制造子结构的完整过程。对健康耳朵的扫描、将其镜像虚拟叠加到患侧、子结构和模具的快速制造省去了传统程序（蜡型、石膏型、试戴）的几个步骤。此外，还介绍了子结构的精确设计和定制，以及用于固定硅胶的原始形状和设计形状。本文展示了该方案节省时间和成本的成果，并讨论了使该假体成为稳定且可重复的系统以改善耳廓缺损或缺失患者康复效果的主要设计特点。
