Three-dimensional characterization of root morphology for maxillary incisors

Area of Science:

• Dental Anatomy
• Biomedical Imaging
• Orthodontics

Background:

• Accurate characterization of tooth morphology is crucial in dentistry.
• Three-dimensional (3D) modeling offers advanced visualization capabilities.
• Reproducibility of 3D models is essential for reliable analysis.

Purpose of the Study:

• To assess the reproducibility of 3D surface models of maxillary incisors.
• To characterize the root morphology of maxillary incisors using 3D analysis.
• To validate the use of cone-beam computed tomography (CBCT) for incisor morphology studies.

Main Methods:

• Construction of 3D surface models from CBCT scans of 55 patients.
• Inter-rater reliability testing for model reproducibility.
• Statistical shape analysis (MANCOVA, Hotelling's t-statistic) to compare tooth morphology subgroups.

Main Results:

• Adequate inter-rater reproducibility was confirmed for 3D surface model construction.
• Significant differences in root morphology were identified across various subgroups (blunt, conical, long, short).
• 3D shape analysis successfully differentiated phenotypic variations in incisor root morphology.

Conclusions:

• The construction of 3D surface models for maxillary incisors is a reproducible technique.
• CBCT-derived 3D models provide a valuable tool for phenotypic characterization of incisor root morphology.
• This methodology supports detailed anatomical studies and potential clinical applications.