Comparative validity and reproducibility study of various landmark-oriented reference planes in 3-dimensional computed tomographic analysis for patients receiving orthognathic surgery
| Autor: | Ya-Fang Chuang, Lun-Jou Lo, Jing-Ling Weng, Hsiu-Hsia Lin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Adult
Male endocrine system Cone beam computed tomography Adolescent Cleft Lip medicine.medical_treatment Orthognathic surgery lcsh:Medicine Outcome assessment Computed tomographic Young Adult Imaging Three-Dimensional Maxilla medicine Humans Radiation treatment planning lcsh:Science Reliability (statistics) Orthodontics Reproducibility Multidisciplinary Landmark business.industry Orthognathic Surgery lcsh:R Reproducibility of Results Cone-Beam Computed Tomography Maxillofacial Abnormalities Facial Asymmetry Female lcsh:Q Anatomic Landmarks business Malocclusion Research Article |
| Zdroj: | PLoS ONE, Vol 10, Iss 2, p e0117604 (2015) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | BACKGROUND:Three-dimensional computed tomographic imaging has become popular in clinical evaluation, treatment planning, surgical simulation, and outcome assessment for maxillofacial intervention. The purposes of this study were to investigate whether there is any correlation among landmark-based horizontal reference planes and to validate the reproducibility and reliability of landmark identification. MATERIALS AND METHODS:Preoperative and postoperative cone-beam computed tomographic images of patients who had undergone orthognathic surgery were collected. Landmark-oriented reference planes including the Frankfort horizontal plane (FHP) and the lateral semicircular canal plane (LSP) were established. Four FHPs were defined by selecting 3 points from the orbitale, porion, or midpoint of paired points. The LSP passed through both the lateral semicircular canal points and nasion. The distances between the maxillary or mandibular teeth and the reference planes were measured, and the differences between the 2 sides were calculated and compared. The precision in locating the landmarks was evaluated by performing repeated tests, and the intraobserver reproducibility and interobserver reliability were assessed. RESULTS:A total of 30 patients with facial deformity and malocclusion--10 patients with facial symmetry, 10 patients with facial asymmetry, and 10 patients with cleft lip and palate--were recruited. Comparing the differences among the 5 reference planes showed no statistically significant difference among all patient groups. Regarding intraobserver reproducibility, the mean differences in the 3 coordinates varied from 0 to 0.35 mm, with correlation coefficients between 0.96 and 1.0, showing high correlation between repeated tests. Regarding interobserver reliability, the mean differences among the 3 coordinates varied from 0 to 0.47 mm, with correlation coefficients between 0.88 and 1.0, exhibiting high correlation between the different examiners. CONCLUSIONS:The 5 horizontal reference planes were reliable and comparable for 3D craniomaxillofacial analysis. These reference planes were useful in standardizing the orientation of 3D skull models. |
| Databáze: | OpenAIRE |
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