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The computer-aided design and rapid prototyping fabrication of removable partial denture frameworks

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posted on 23.12.2009, 11:30 authored by Dominic Eggbeer, Richard BibbRichard Bibb, R.J. Williams
This study explores the application of computer-aided design and manufacture (CAD/CAM) to the process of electronically surveying a scanned dental cast as a prior stage to producing a sacrificial pattern for a removable partial denture (RPD) metal alloy framework. These are designed to retain artificial replacement teeth in the oral cavity. A cast produced from an impression of a patient's mouth was digitally scanned and the data converted to a three-dimensional computer file that could be read by the computer-aided design (CAD) software. Analysis and preparation were carried out in the digital environment according to established dental principles. The CAD software was then used to design the framework and generate a standard triangulation language (STL) file in preparation for its manufacture using rapid prototyping (RP) methods. Several RP methods were subsequently used to produce sacrificial patterns, which were then cast in a chromium-cobalt alloy using conventional methods and assessed for accuracy of fit. This work demonstrates that CAD/CAM techniques can be used for electronic dental cast analysis, preparation, and design of RPD frameworks. It also demonstrates that RP-produced patterns may be successfully cast using conventional methods and that the resulting frameworks can provide a satisfactory fit.

History

School

  • Design

Citation

EGGBEER, D., BIBB, R.J. and WILLIAMS, R.J., 2005. The computer-aided design and rapid prototyping fabrication of removable partial denture frameworks. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 219 (3), pp. 195-202

Publisher

Professional Engineering Publishing / © IMechE

Version

VoR (Version of Record)

Publication date

2005

Notes

This is an article from the journal, Proceedings of the IMechE, Part H: Journal of Engineering in Medicine [© IMechE ]. It is also available at: http://dx.doi.org/10.1243/095441105X9372

ISSN

0954-4119

Language

en