Determination of midsagittal plane for evaluation of facial asymmetry using three-dimensional computed tomography
| Autor: | Jee-Seon Baik, Joo-Young Park, Taeyoung Kim, Hwa-Sung Chae, Soon-Chul Choi, Kyung-Hoe Huh |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Cephalometric analysis
Orthodontics Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Cephalometry Dentistry Computed tomography Class iii Imaging Three-Dimensional Craniometry Sagittal plane Dentofacial Deformity medicine.anatomical_structure Facial Asymmetry Medicine Radiology Nuclear Medicine and imaging Original Article Tomography business Tomography X-Ray Computed General Dentistry Facial symmetry |
| Zdroj: | Imaging Science in Dentistry |
| ISSN: | 2233-7830 |
| Popis: | Purpose : The aim of the present study was to investigate the disagreement of cephalometric analysis depending on the reference determination of midsagittal plane on three-dimensional computed tomography. Materials and Methods : A total of 102 young women with class III dentofacial deformity were evaluated using three-dimensional computed tomography. The cranial and facial midsagittal planes were defined and the amounts of jaw deviation were calculated. The amounts of jaw deviation were compared with paired t-test (2-tailed) and BlandAltman plot was drawn. Results : The landmark tracing were reproducible (r›.978). The jaws relative to the cranial midsagittal plane were 10-17 times more significantly deviated than to the facial midsagittal plane (P⁄.001). Bland-Altman plot demonstrated that the differences between the amounts of jaw deviation from two midsagittal planes were not normally distributed versus the average of the amounts of jaw deviation from two midsagittal planes. Conclusion : The cephalometric analyses of facial asymmetry were significantly inconsistent depending on the reference determination of midsagittal plane. The reference for midsagittal plane should be carefully determined in three-dimensional cephalometric analysis of facial asymmetry of patients with class III dentofacial deformity. (Imaging Sci Dent 2011; 41 : 79-84) |
| Databáze: | OpenAIRE |
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