35. Upper airway characteristics in patients with class II skeletal malocclusion using cone beam computed tomography and computational fluid dynamic
Main Article Content
Abstract
This study investigated the upper airway characteristics in patient with class II skeletal using cone-beam computed tomography (CBCT). We used a cross-sectional descriptive study on CBCT scans of 124 participants by using STL file; dimensions, CMA, total volume, velocity and max pressure were calculated by CBCT and CFD softwares. The average value of the deviation between two jaws in this study group was 5.840. The overall upper airway volume in this group had an average of 21.05mm³, while the average smallest cross-sectional area (CMA) in this group was 180.07mm².
Article Details
Keywords
Class II skeletal, Cone-beam computed tomography, Computed fluid dynamic (CFD)
References
2. Wang Y, Wang J, Liu Y, Yu S, Sun X, Li S, et al. Fluid–structure interaction modeling of upper airways before and after nasal surgery for obstructive sleep apnea. J Biomech. 2012; 28(5): 528-546.
3. Ayodele OJ, Oluwatosin AE, Taiwo OC, Dare AA. Computational fluid dynamics modeling in respiratory airways obstruction: current applications and prospects. Int J Biomech Sci Eng. 2021; 9: 16-26.
4. Pirnar J, Dolenc-Grošelj L, Fajdiga I, Žun I. Computational fluid-structure interaction simulation of airflow in the human upper airway. J Biomech Eng. 2015; 48(13): 3685-3691.
5. Fraser KH, Taskin ME, Griffith BP, Wu Z. The use of computational fluid dynamics in the development of ventricular assist devices. J Mech Phys Solids. 2011; 33(3): 263-280.
6. Lowe AA, Fleetham JA, Adachi S, Ryan CF. Cephalometric and computed tomographic predictors of obstructive sleep apnea severity. Am J Orthod Dentofacial Orthop. 1995; 107(6): 589-595.
7. Brito FC, Brunetto DP, Nojima MC. Three-dimensional study of the upper airway in different skeletal Class II malocclusion patterns. Am J Orthod Dentofacial Orthop. 2019; 89(1): 93-101.
8. Yucel A, Unlu M, Haktanir A, Acar M, Fidan F. Evaluation of the upper airway cross-sectional area changes in different degrees of severity of obstructive sleep apnea syndrome: cephalometric and dynamic CT study. Am J Orthod Dentofacial Orthop. 2005;26(10):2624-2629.
9. Faizal W, Ghazali NNN, Khor C, Badruddin IA, Zainon M, Yazid AA, et al. Computational fluid dynamics modelling of human upper airway: A review. J Appl Fluid Mech. 2020;196:105627.
10. Iwasaki T, Saitoh I, Takemoto Y, Inada E, Kanomi R, Hayasaki H, et al. Evaluation of upper airway obstruction in Class II children with fluid-mechanical simulation. J Biomech Eng. 2011; 139(2): e135-e145.
11. Taylor M, Hans MG, Strohl KP, Nelson S, Holly Broadbent BJTAO. Soft tissue growth of the oropharynx. 1996; 66(5): 393-400.