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A technique for fabricating patterns for removable partial denture frameworks using digitized casts and electronic

R J Williams1, Richard Bibb, Tahseen Rafik

  • 1Center for Dental Technology, National Centre for Product Design and Development Research and School of Product and Engineering Design, University of Wales Institute, Cardiff, United Kingdom. rjwilliams@uwic.ac.uk

The Journal of Prosthetic Dentistry
|January 24, 2004
PubMed
Summary

Computer-aided design and manufacture (CAD/CAM) are now viable for removable partial denture frameworks. Digital surveying and rapid prototyping enable precise fabrication of sacrificial patterns for advanced prosthodontic procedures.

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Area of Science:

  • Biomaterials
  • Dental Technology
  • Computer-Aided Engineering

Background:

  • Computer-aided design and manufacture (CAD/CAM) are widely used in restorative dentistry and oral surgery.
  • The application of CAD/CAM in removable prosthodontics remains limited, despite its potential.
  • This study explores integrating CAD/CAM into removable partial denture framework fabrication.

Purpose of the Study:

  • To develop and investigate computer-aided techniques for digital surveying and sacrificial pattern production in removable prosthodontics.
  • To assess the feasibility of using CAD/CAM for creating components of removable partial denture frameworks.
  • To lay the groundwork for a fully integrated CAD/CAM approach in removable denture fabrication.

Main Methods:

  • Obtained a 3D digital model of a conventional dental cast using an optical scanner.
  • Utilized CAD software to design removable partial denture framework components on the 3D scan.
  • Employed a Rapid Prototyping machine to fabricate physical sacrificial patterns from the digital designs.

Main Results:

  • Successfully created a 3D computer model of a dental cast.
  • Designed and digitally modeled components for a removable partial denture framework.
  • Produced physical sacrificial patterns using Rapid Prototyping technology.
  • Developed and validated techniques for digital cast surveying prior to pattern production.

Conclusions:

  • Digital dental surveying and machine-produced sacrificial patterns are achievable for removable prosthodontics.
  • These advancements pave the way for integrating CAD/CAM into the fabrication of removable partial denture frameworks.
  • Further development can lead to a comprehensive CAD/CAM workflow for removable denture design and manufacturing.