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Updated: May 22, 2026
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Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
Published on: August 5, 2021
Construction of orthodontic setup models on a computer.
Takuya Kihara1, Kotaro Tanimoto, Masahiko Michida
1Department of Oral Biology and Engineering, Division of Oral Health Sciences, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
Summary
This study presents a reproducible method for visualizing tooth roots in orthodontic setup models by integrating cone-beam computed tomography (CBCT) and laser scanning data, enhancing virtual dental models.
Area of Science:
- Biomedical Engineering
- Dental Technology
- Orthodontics
Background:
- Orthodontic setup models traditionally lack tooth root visualization.
- Integrating cone-beam computed tomography (CBCT) and laser scanning offers a solution.
Purpose of the Study:
- To present a method for visualizing tooth roots in orthodontic setup models.
- To evaluate the reproducibility of integrating CBCT and laser scanner data.
Main Methods:
- Generated 3D digital models from dental casts and CBCT slices.
- Superimposed and integrated 3D tooth models with setup models.
- Registered integrated models and evaluated reproducibility using statistical analysis.
Main Results:
- Achieved a discrepancy of 0.025 ± 0.007 mm in integrated 3D models.
- Found small average distances between anterior (0.023 ± 0.007 mm) and posterior teeth (0.028 ± 0.007 mm).
- No significant difference in reproducibility was observed between right and left teeth (P = 0.831).
Conclusions:
- The presented method enables reproducible visualization of tooth roots in virtual orthodontic setup models.
- Accurate registration of crown models to CBCT scans is key for this visualization technique.
