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Updated: May 9, 2026

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Standardized digital models for biomechanical analysis.

Okkar Kyaw, Satoshi Yamaguchi, Kerstin Rabel

    International Journal of Computerized Dentistry
    |May 8, 2026
    PubMed
    Summary
    This summary is machine-generated.

    A new digital workflow simplifies creating standardized dental models for biomechanical analysis. This approach enhances digital dentistry and CAD/CAM workflows by offering precise control over tooth preparation and prosthesis design.

    Keywords:
    NURBSbiomechanical analysiscomputer-aided designin silicoresin-bonded fixed dental prosthesisstandardized models

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    Area of Science:

    • Digital dentistry and CAD/CAM.
    • Biomechanical analysis.
    • Dental modeling.

    Background:

    • Manual tooth preparation and prosthesis design are complex and time-consuming.
    • Existing CAD methods struggle with standardized models from complex anatomy.
    • A need exists for user-friendly digital workflows in dentistry.

    Purpose of the Study:

    • To develop a user-friendly digital workflow for creating standardized models.
    • To enable in silico and in vitro biomechanical analyses.
    • To support digital and CAD/CAM dentistry.

    Main Methods:

    • Scanning typodont teeth (maxillary central and lateral incisors).
    • Converting scan data to Non-Uniform Rational B-Spline (NURBS) format using CAD software.
    • Modifying NURBS data for digital tooth preparation and designing a resin-bonded fixed dental prosthesis.

    Main Results:

    • Generated standardized CAD models of prepared teeth and prostheses.
    • Achieved high accuracy with cumulative root-mean-square (RMS) deviation of 0.6 μm and 1.5 μm.
    • Demonstrated precise control over preparation geometry and cement space.

    Conclusions:

    • The semi-automatic NURBS conversion workflow is practical for digital dentistry.
    • Enables precise control over preparation geometry, cement space, and prosthesis design.
    • Generates editable models for biomechanical analysis, prototyping, and CAD/CAM workflows.