Establishment and preliminary analysis of fluid dynamics model of the subjects with micrognathia / 实用口腔医学杂志
Journal of Practical Stomatology
; (6): 389-392, 2015.
Article
in Zh
| WPRIM
| ID: wpr-463579
Responsible library:
WPRO
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.
Full text:
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Index:
WPRIM
Language:
Zh
Journal:
Journal of Practical Stomatology
Year:
2015
Type:
Article