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Three-Dimensional Analysis of the Correlation Between Soft Tissue and Bone of the Lower Face Using Three-Dimensional
1Department of Plastic and Reconstructive Surgery, College of Medicine, Soonchunhyang University, Bucheon, Korea.
The Journal of Craniofacial Surgery
|October 16, 2018
Summary
Three-dimensional (3D) laser scanning provides reliable measurements of the gonial angle (GA), comparable to 3D computed tomography (CT). This validates 3D laser scanning as a viable tool for assessing mandibular angles in surgical planning.
Area of Science:
- Dentistry
- Medical Imaging
- Anthropology
Background:
- Establishing normative cephalometric values for the lower face is crucial for clinical applications.
- Previous studies have relied on two-dimensional (2D) analysis, limiting accuracy.
- Three-dimensional (3D) imaging offers a more precise method for facial analysis.
Purpose of the Study:
- To determine 3D cephalometric linear and angular normative values of the lower face in Korean individuals.
- To validate the comparability of measurements obtained via 3D laser scanning versus 3D computed tomography (CT).
- To assess the reliability of 3D laser scanning for clinical applications in plastic and orthognathic surgery.
Main Methods:
- A cohort of 40 Korean individuals (18-60 years) was analyzed.
- Linear and angular measurements of the lower face were acquired using both 3D CT and 3D laser scanning.
- Statistical analyses, including concordance and correlation tests, were performed to compare the two imaging modalities.
Main Results:
- Significant differences in lower facial measurements were observed between sexes.
- Asymmetry in lower facial features was noted on both sides of the face.
- A high correlation and good concordance were found between the gonial angle (GA) measured by 3D laser scanning (Tr'-Go'-Me') and 3D CT (articulate-gonion-menton).
Conclusions:
- 3D facial laser scanning provides measurements of the gonial angle (GA) comparable to those from 3D CT.
- The assessed reference points and GA measurements using 3D laser scanning are reliable.
- 3D laser scanning presents a dependable alternative for evaluating mandibular angles in patient assessment and surgical planning.
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