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Comparative evaluation between conventional and digital orthodontic model analysis
Rana Sarchanar Jamal1, Parthiban Krishnaraj2, Syed Mohammad Osama Ahsan3
1Dental Intern, College of Dentistry, Ajman University, United Arab Emirates.
Bioinformation
|March 30, 2026
Summary
Digital orthodontic model analysis using intraoral scans is as accurate and reproducible as traditional plaster models. This digital method offers better time efficiency, making it a viable clinical alternative.
Area of Science:
- Dentistry
- Orthodontics
- Digital Imaging
Background:
- Conventional orthodontic treatment relies on plaster models derived from alginate impressions.
- Evaluating the accuracy, reproducibility, and efficiency of digital orthodontic models is crucial for modern clinical practice.
Purpose of the Study:
- To compare the accuracy, reproducibility, and time efficiency of digital orthodontic model analysis with conventional plaster model analysis.
- To validate intraoral scans as a reliable method for orthodontic diagnostics.
Main Methods:
- A cross-sectional study involving 60 patients undergoing orthodontic treatment.
- Acquisition of both plaster models (from alginate impressions) and digital models (via intraoral scans).
- Analysis of tooth and arch measurements, and Bolton analysis performed by two independent examiners using both model types.
Main Results:
- Digital orthodontic model analysis demonstrated equivalent accuracy and high reproducibility compared to traditional plaster models.
- The digital analysis method proved to be more time-efficient than the conventional approach.
- Statistical analysis using intraclass correlation coefficients, paired t-tests, and Bland-Altman analysis supported the findings.
Conclusions:
- Digital orthodontic model analysis using intraoral scans is a valid and reliable alternative to traditional plaster models.
- The adoption of digital models in orthodontics can enhance clinical workflow efficiency without compromising diagnostic quality.
