Establishment and preliminary analysis of fluid dynamics model of the subjects with micrognathia
10.3969/j.issn.1001-3733.2015.03.020
- VernacularTitle:小下颌畸形患者上气道流体力学模型的构建及初步分析
- Author:
Lizhe ZHU
;
Bo YU
;
Yu GUO
;
Mingchao DING
;
Yongming LI
- Publication Type:Journal Article
- Keywords:
Micrognathia;
Computational fluid dynamics;
Aerodynamics;
Upper airway;
Three-dimensional reconstruction
- From:
Journal of Practical Stomatology
2015;(3):389-392
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To establish a fluid dynamics model of upper airway before and after surgery and explore the changes of three-dimensional fluid dynamics in patients with micrognathia.Methods:A patient with micrognathia and severe obstructive sleep apnea-hypopnea syndrome(OSAHS)accepted CT scan before and six months after mandibular advancement operation.Computation-al fluid dynamics model was built on the base of CT scan by Mimics 1 0.01 and ANSYS ICEMCFD1 4.0.The internal flow of upper respiratory tract was simulated by ANSYS-FLUENT 1 4.0 and the results were analyzed by Tecplot.Results:Fluid dynamics model of upper airway was constructed before and after the surgery respectively.The volume of the upper airway of the patient increased from 37.284 cm3 to 44.498 cm3;the most narrow area of upper airway was located in the lower bound of pharyngopalatiae,and it was augmented from 1 .1 35 cm2 to 2.297 cm2;the minimum pressure was decreased from1 01 308 Pa to 1 01 272 Pa;the maximum air velocity increased from 3.476 m/s to 4.978 m/s.Conclusion:Mandibular advancement may correct the occlusal deformity,ex-panse the upper respiratory tract,decrease the negative pressure and maintain the patency of the airflow in the treatment of patients with micrognathia and OSAHS.
