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Updated: Apr 1, 2026
Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
Published on: September 8, 2023
[APPLICATION OF THREE-DIMENSIONAL CEPHALOMETRIC ANALYSIS IN ORTHOGNATHIC SURGERY]
Objective:
To establish a model of three-dimensional (3-D) cephalometric analysis to study dentomaxillofacial deformities.
Methods:
Between January 2012 and October 2013, 15 patients with dentomaxillofacial deformities were treated using 3-D cephalometric analysis in orthognathic surgery plan. There were 7 males and 8 females with an average age of 23.6 years (range, 17-37 years), including 4 cases of mandibular protrusion with maxillary deficiency, 4 cases of maxillary protrusion with mandibular deficiency, 2 cases of long face syndrome, and 5 cases of facial asymmetry. CT images were reconstructed by Mimics software. The anatomical landmarks were located, the reference planes and analysis planes were defined and the 3-D coordinate was established. The distance and degree between landmarks and analysis planes which defined in the measure project were measured.
Results:
Based on the 3-D CT quantitative analysis methods, cephalometric analysis project was defined in the 3-D coordinate. 3-D cephalometric analysis provided a convenient and precise method for the clinical measurement of dentomaxillofacial morphology, and reduce the time in preoperation analysis.
Conclusion:
The model of 3-D CT cephalometric analysis can provide precise information in the diagnosis and treatment planning of orthognathic surgery.
