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Rapid development of auricular prosthesis using CAD and rapid prototyping technologies.

K Subburaj1, C Nair, S Rajesh

  • 1Department of Mechanical Engineering, Indian Institute of Technology, Powai, Mumbai, India.

International Journal of Oral and Maxillofacial Surgery
|September 8, 2007
PubMed
Summary

This study introduces a semi-automated method for creating auricular prostheses using computer-aided design (CAD) and rapid prototyping (RP). This innovative technique offers a more accurate and faster alternative to traditional methods for ear reconstruction.

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Area of Science:

  • Medical device development
  • Biomedical engineering
  • Reconstructive surgery

Background:

  • Surgical correction of external ear defects is not always feasible.
  • Reconstructive solutions for ear defects depend on anaplastologist expertise.
  • Existing methods for auricular prosthesis fabrication can be time-consuming.

Purpose of the Study:

  • To develop and demonstrate a semi-automated methodology for auricular prosthesis development.
  • To improve the accuracy and reduce the lead time of ear prosthesis fabrication.
  • To present a computer-aided design (CAD) and rapid prototyping (RP) based workflow.

Main Methods:

  • Utilized computed tomography (CT) scan images of the contralateral ear for geometric replication.
  • Employed medical modeling software and a haptic CAD system for prosthesis design.
  • Fabricated polymer models using rapid prototyping (RP) for mold creation and silicone prosthesis production.

Main Results:

  • The developed CAD/RP methodology achieved high accuracy in prosthesis shape, size, and position.
  • Demonstrated successful application in a real-life case of auricular defect reconstruction.
  • Significantly reduced the fabrication lead time compared to conventional manual techniques.

Conclusions:

  • The semi-automated CAD/RP approach provides an accurate and efficient method for auricular prosthesis fabrication.
  • This technology offers a viable alternative for patients unable to undergo surgery.
  • The workflow streamlines the process, enhancing patient care in reconstructive medicine.