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Three-dimensional dental cast analyzing system using laser scanning

T Kuroda1, N Motohashi, R Tominaga

  • 12nd Department of Orthodontics, Faculty of Dentistry, Tokyo Medical and Dental University, Japan.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|October 1, 1996
PubMed
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This study introduces a new 3D dental cast analysis system using laser scanning. The system accurately measures dental casts, aiding in complex treatment planning for orthognathic surgery.

Area of Science:

  • Biomedical Engineering
  • Dental Technology
  • Medical Imaging

Background:

  • Accurate dental cast analysis is crucial for treatment planning.
  • Existing methods for dental cast analysis can be time-consuming and complex.
  • 3D analysis offers potential for enhanced precision and efficiency.

Purpose of the Study:

  • To introduce a novel three-dimensional (3D) dental cast analysis system.
  • To present the preliminary clinical applications of this laser scanning system.
  • To highlight the system's utility in improving treatment planning for orthognathic surgery.

Main Methods:

  • Development of a system comprising a laser projector, cameras, image processor, and computer workstations.
  • Utilizing slit-ray laser scanning and triangulation for point coordinate determination.

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  • Generating 3D graphics from approximately 90,000 X, Y, Z coordinates.

    • Main Results:

    • The system achieves a measurement error of less than 0.05 mm.
    • 3D dental cast generation takes approximately 40 minutes.
    • The system enables measurements of palatal surface area and oral cavity volume.

    Conclusions:

    • The developed 3D dental cast analysis system offers high accuracy and efficiency.
    • This technology simplifies and speeds up mock surgery for treatment planning.
    • The system has significant potential for applications in orthognathic surgery and other dental fields.