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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
Published on: February 23, 2024
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Three-dimensional evaluation of morphologic tooth symmetry in various malocclusions
Furkan Dindaroğlu1, Gökhan Serhat Duran2, Işıl Aras1
1Research assistant, Department of Orthodontics, School of Dentistry, Ege University, İzmir, Turkey.
Summary
Dental cast analysis reveals minimal tooth asymmetry across Class I, II, and III malocclusions. Morphologic deviations were clinically insignificant, indicating consistent tooth symmetry regardless of malocclusion type.
Area of Science:
- Dental Morphology
- Orthodontics
- Biomedical Engineering
Background:
- Assessing dental arch symmetry is crucial for orthodontic diagnosis and treatment planning.
- Previous studies often lacked 3-dimensional (3D) quantitative analysis of tooth morphology symmetry.
Purpose of the Study:
- To quantitatively evaluate the 3D morphologic symmetry of maxillary and mandibular teeth between left and right quadrants.
- To compare tooth symmetry across different malocclusion classes (I, II, and III).
Main Methods:
- 120 dental casts from 60 patients with Class I, II, and III malocclusions were analyzed.
- Dental casts were digitized using a 3D intraoral scanner.
- Advanced engineering software (Rapidform, 3-Matic) was used for segmentation, superimposition, and deviation analysis of teeth in quadrants.
Main Results:
- Maximum mean deviations in tooth morphology were low, ranging from 0.14 ± 0.10 mm in the maxilla (Class I) to 0.16 ± 0.09 mm (Class III).
- Differences in maximum deviation amounts among malocclusion groups were observed, with values up to 0.79 ± 0.17 mm in the mandibular arch.
- These deviations were found to be clinically insignificant.
Conclusions:
- Morphologic deviations in tooth symmetry are minimal and clinically insignificant across Class I, II, and III malocclusions.
- Tooth morphology symmetry does not significantly differ among the investigated malocclusion groups.
- 3D analysis confirms high tooth symmetry, aiding in orthodontic treatment considerations.
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