Study on the reproducibility of the Frankfort horizontal plane based on CBCT 3D reconstruction and comparative analysis with lateral radiographs - Summary - DentalSpire
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Evaluation of the Consistency of the Frankfort Horizontal Plane Using 3D Reconstruction from CBCT and Comparison with Lateral Cephalometric Radiographs
To investigate the reproducibility of the Frankfort horizontal plane (FHP) established using CBCT-based three-dimensional reconstruction and to evaluate reproducibility errors generated by CBCT and lateral cephalometric reference-construction workflows in patients with facial deformities.
Approach:
Study Design: 27 patients with facial deformities underwent both CBCT scanning and lateral cephalometric radiography. 3D craniofacial models were reconstructed, and FHP was established.
Data Analysis: Landmark positional errors and plane angular errors were calculated. Intra-class correlation coefficients (ICCs) assessed reproducibility, Bland–Altman analysis evaluated agreement, and paired t tests compared reproducibility errors.
Key Findings:
CBCT 3D reconstruction method showed good reproducibility for all landmarks and planes in establishing FHP.
Lateral cephalometric measurements had larger reproducibility errors compared to the CBCT workflow (p < 0.05).
Interpretation:
CBCT-based three-dimensional reconstruction provides a framework for FHP construction.
Limitations:
The study was limited to a small sample size of 27 patients.
The study focused on patients with facial deformities, which may not generalize to other populations.
Conclusion:
CBCT-based three-dimensional reconstruction demonstrates high reproducibility for Frankfort horizontal plane construction, offering a reliable reference for diagnosis and treatment planning.
