实用口腔医学杂志
實用口腔醫學雜誌
실용구강의학잡지
JOURNAL OF PRACTICAL STOMATOLOGY
2014年
2期
183-187
,共5页
李懿波%李永明%陈金武%霍振辉%李宝利
李懿波%李永明%陳金武%霍振輝%李寶利
리의파%리영명%진금무%곽진휘%리보리
阻塞性睡眠呼吸暂停低通气综合征(OSAHS)%流体力学%三维重建%上呼吸道%口腔矫治器
阻塞性睡眠呼吸暫停低通氣綜閤徵(OSAHS)%流體力學%三維重建%上呼吸道%口腔矯治器
조새성수면호흡잠정저통기종합정(OSAHS)%류체역학%삼유중건%상호흡도%구강교치기
Obstructive sleep apnea hypopnea syndrome(OSAHS)%Computational fluid dynamics%Three-dimen-sional reconstruction%Upper airway%Oral appliance
目的：分析阻塞型睡眠呼吸暂停低通气综合征（OSAHS）患者戴用口腔矫治器（OA）前后上呼吸道形态及内部气流动力学的变化。方法：对1名46岁男性 OSAHS 患者戴用 OA 前及戴用 OA 3个月后的上呼吸道行 CT 扫描，利用 Mimics 10．0建立上呼吸道三维模型，通过 ANSYS ICEMCFD14．0对三维模型进行网格划分后，用 ANSYS-FLUENT 14．0对上呼吸道内部流场进行数值模拟，采用 ANSYS-CFD-Post14．0对模拟结果进行后处理，将计算机流体力学（CFD）测量结果进行比较。结果：患者上呼吸道最狭窄区域位于腭咽下界，戴用矫治器后此区域面积由0．1194 cm2增大到0．4099 cm2；戴用矫治器后最大流速由11．087 m/s 减低到8．204 m/s；最小负压力由-83 Pa 减低到-59 Pa；咽腔阻力由250 Pas/L 降低到145 Pas/L。结论：OSAHS患者戴用 OA 后，可扩张上气道，降低上呼吸道狭窄区域的负压及咽腔阻力，使得上呼吸道不易塌陷，保持气流通畅。
目的：分析阻塞型睡眠呼吸暫停低通氣綜閤徵（OSAHS）患者戴用口腔矯治器（OA）前後上呼吸道形態及內部氣流動力學的變化。方法：對1名46歲男性 OSAHS 患者戴用 OA 前及戴用 OA 3箇月後的上呼吸道行 CT 掃描，利用 Mimics 10．0建立上呼吸道三維模型，通過 ANSYS ICEMCFD14．0對三維模型進行網格劃分後，用 ANSYS-FLUENT 14．0對上呼吸道內部流場進行數值模擬，採用 ANSYS-CFD-Post14．0對模擬結果進行後處理，將計算機流體力學（CFD）測量結果進行比較。結果：患者上呼吸道最狹窄區域位于腭嚥下界，戴用矯治器後此區域麵積由0．1194 cm2增大到0．4099 cm2；戴用矯治器後最大流速由11．087 m/s 減低到8．204 m/s；最小負壓力由-83 Pa 減低到-59 Pa；嚥腔阻力由250 Pas/L 降低到145 Pas/L。結論：OSAHS患者戴用 OA 後，可擴張上氣道，降低上呼吸道狹窄區域的負壓及嚥腔阻力，使得上呼吸道不易塌陷，保持氣流通暢。
목적：분석조새형수면호흡잠정저통기종합정（OSAHS）환자대용구강교치기（OA）전후상호흡도형태급내부기류동역학적변화。방법：대1명46세남성 OSAHS 환자대용 OA 전급대용 OA 3개월후적상호흡도행 CT 소묘，이용 Mimics 10．0건립상호흡도삼유모형，통과 ANSYS ICEMCFD14．0대삼유모형진행망격화분후，용 ANSYS-FLUENT 14．0대상호흡도내부류장진행수치모의，채용 ANSYS-CFD-Post14．0대모의결과진행후처리，장계산궤류체역학（CFD）측량결과진행비교。결과：환자상호흡도최협착구역위우악인하계，대용교치기후차구역면적유0．1194 cm2증대도0．4099 cm2；대용교치기후최대류속유11．087 m/s 감저도8．204 m/s；최소부압력유-83 Pa 감저도-59 Pa；인강조력유250 Pas/L 강저도145 Pas/L。결론：OSAHS환자대용 OA 후，가확장상기도，강저상호흡도협착구역적부압급인강조력，사득상호흡도불역탑함，보지기류통창。
Objective:To analyse the change of morphology and internal air flow in upper airway by the use of oral appliance(OA)in patients with obstructive sleep apnea hypopnea syndrome (OSAHS).Methods:A 46-year-old male patient with OSAHS accepted CT scan before and three months after use of OA.Computational fluid dynamics(CFD)model was built on the base of CT scans by Mimics 10.01 and ANSYS ICEMCFD14.0.The internal flow of upper respiratory tract was simulated by ANSYS-FLUENT 14.0 and the re-sults was analyzed by ANSYS-CFD-Post14.0.Results:The most narrow area of upper airway was located in the lower bound of pha-ryngopalatiae,and it augmented from 0.119 4 cm2 to 0.409 9 cm2 after wearing OA;the maximum air velocity was decreased from 11 . 087 m/s to 8.204 m/s,the minimum negative pressure was decreased from -83 Pa to -59 Pa,the resistance of cavum pharyngis de-creased from 250 Pas/L to 145 Pas/L.Conclusion:Application of OA may expanse the upper respiratory tract,decrease the negative pressure and resistance of the upper respiratory tract in narrow area,reduce the collapsibility of the upper airway and maintain the pa-tency of the airflow.
