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Trial fitting of a removable partial denture framework made using computer-aided design and rapid prototyping

R J Bibb¹, D Eggbeer, R J Williams

¹National Centre for Product Design & Development Research, University of Wales Institute Cardiff, Western Avenue, Cardiff, South Glamorgan, CF5 2YB, UK. rbibb-pdr@uwic.ac.uk

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine

|November 23, 2006

Summary

This study details the first patient trial fitting of a removable partial denture framework. The framework utilized a computer-aided design/computer-aided manufacturing (CAD/CAM) and rapid prototyping (RP) produced sacrificial pattern, proving clinically acceptable.

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Area of Science:

Dental prosthetics
Biomaterials engineering
Digital dentistry

Background:

Previous research documented CAD/CAM-produced sacrificial patterns for removable partial denture (RPD) frameworks.
No prior studies reported on the clinical trial fitting of such RPD frameworks to patients.

Purpose of the Study:

To report the first patient trial fitting of a removable partial denture framework.
To evaluate the clinical acceptability of an RPD framework utilizing a CAD/CAM and rapid prototyping (RP) produced sacrificial pattern.

Main Methods:

A patient's dental cast was scanned, and computer-aided design (CAD) was used for surveying and pattern design.
A sacrificial pattern was fabricated using rapid prototyping (RP) technology.
Conventional investment casting and finishing techniques were applied to create the RPD framework.

Main Results:

The RPD framework, featuring a CAD/CAM and RP-generated sacrificial pattern, was successfully trial-fitted to the patient.
Clinical judgment deemed the framework acceptable for subsequent denture fabrication stages.

Conclusions:

The CAD/CAM and RP-based fabrication of sacrificial patterns is a viable method for producing removable partial denture frameworks.
This technology demonstrates clinical potential for advancing RPD fabrication processes.