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Related Experiment Video

Updated: Jun 16, 2026

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

Published on: September 28, 2017

Virtual model analysis as an alternative approach to plaster model analysis: reliability and validity.

K Bootvong¹, Z Liu, C McGrath

¹Faculty of Dentistry, The University of Hong Kong, SAR, China.

European Journal of Orthodontics

|February 19, 2010

Summary

This summary is machine-generated.

Virtual dental models offer a feasible alternative to traditional plaster models in orthodontics. This study confirms their validity and reliability for analyzing intra- and inter-arch relationships.

Related Experiment Videos

Last Updated: Jun 16, 2026

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

Published on: September 28, 2017

Area of Science:

Orthodontics
Dental Technology
Diagnostic Tools

Background:

Traditional orthodontic treatment relies on plaster models for diagnosis and treatment planning.
The emergence of digital technologies presents opportunities to enhance orthodontic workflows.
Assessing the accuracy and reliability of virtual models is crucial for their clinical adoption.

Purpose of the Study:

To evaluate the feasibility of using virtual dental models as a substitute for conventional plaster models in orthodontics.
To determine the criterion validity and reliability of measurements derived from virtual models.

Main Methods:

Virtual dental models from 80 patients were compared with their corresponding plaster models.
Measurements included tooth width, overjet, overbite, intermolar and intercanine widths, and midline discrepancy.
Intra- and inter-examiner reliability and test-retest reliability were assessed using intraclass correlation coefficients (ICCs) and kappa (κ) statistics.

Main Results:

Virtual model analysis demonstrated acceptable intra- and inter-examiner reliability (ICC > 0.7) for various measurements.
Good criterion validity was found, with strong agreement between virtual and plaster model measurements (ICC > 0.8).
Substantial agreement was observed for canine and molar relationship classifications (κ > 0.70).

Conclusions:

Analysis performed on virtual dental models is as valid as analysis on traditional plaster models for assessing intra- and inter-arch relationships.
Virtual models are a reliable and feasible alternative for orthodontic evaluations.
Digital workflows can be effectively integrated into orthodontic practice.