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Updated: Jul 10, 2026

3D Imaging of PDL Collagen Fibers during Orthodontic Tooth Movement in Mandibular Murine Model
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Three-dimensional imaging of orthodontic models: a pilot study.

Jennifer Asquith1, Toby Gillgrass, Peter Mossey

  • 1Edinburgh Postgraduate Dental Institute, Scotland, UK.

European Journal of Orthodontics
|November 3, 2007
PubMed
Summary

Digital orthodontic models offer a viable alternative to traditional dental casts. Measurements on these 3D models are generally accurate and reproducible, potentially reducing the need for physical models.

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Area of Science:

  • Orthodontics
  • Dental Technology
  • Biomedical Engineering

Background:

  • Computer-based digital orthodontic models are emerging as a replacement for conventional dental casts.
  • Assessing the accuracy and reproducibility of measurements on these digital models is crucial for clinical adoption.

Purpose of the Study:

  • To evaluate the accuracy and reproducibility of measurements performed on computer-based digital orthodontic models.
  • To compare measurement techniques between digital models and traditional dental casts.

Main Methods:

  • Ten sets of orthodontic study models were scanned to create three-dimensional (3D) digital images.
  • Two examiners measured 11 specific parameters on both conventional casts and digital models on two separate occasions.
  • Statistical analysis included paired t-tests and reliability coefficients to compare measurement methods.

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Last Updated: Jul 10, 2026

3D Imaging of PDL Collagen Fibers during Orthodontic Tooth Movement in Mandibular Murine Model
09:33

3D Imaging of PDL Collagen Fibers during Orthodontic Tooth Movement in Mandibular Murine Model

Published on: April 15, 2021

Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
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Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

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Main Results:

  • Systematic errors were found in five of the 11 parameters when comparing digital models to dental casts.
  • Random errors were significant for three measured parameters.
  • Lower intercanine width and overjet measurements demonstrated the highest accuracy and reproducibility on digital models.

Conclusions:

  • Most measured parameters on digital orthodontic models can be reliably obtained.
  • Digital models show potential to eliminate the need for producing and storing physical dental casts, contingent on cost-effectiveness.