阻塞性睡眠呼吸暂停低通气综合征患者的牙弓与上气道形态变化及相关性分析

目的：：比较阻塞性睡眠呼吸暂停低通气综合征( OSAHS)患者与正常人牙弓及上气道形态差异，揭示OSAHS牙弓形态改变与上气道容积对应变化的关系。方法：利用上气道CBCT扫描及口腔模型测量经PSG诊断为OSAHS的男性患者( n=22)与正常男性对照(n=19)的牙弓形态与上气道容积变化，并行相关性分析。结果：OSAHS组上颌牙弓长度与腭弓高度分别大于对照组(均P<0.05)；OSAHS组鼻咽段、腭咽段截面积及上气道总容积与腭弓高度、上颌牙弓长度呈负相关(均P<0.05)，与上颌后段牙弓宽度呈正相关关系(P<0.05)。结论：OSAHS患者上颌牙弓形态的异常与鼻咽段和腭咽段容积的变化有关联。

Analysis of the relation between dental arch size and upper airway morphology in patients with obstructive sleep apnea hypoventilation syndrome

Objective:To study the anatomical correlation between dental arch and the volume of upper airway in patients with obstruc-tive sleep apnea hypoventilation syndrome(OSAHS). Methods: Dental arch architecture and upper airway volume were measured by cone beam CT(CBCT) in the subjects with OSAHS(n=22) and without OSAHS(n=19). The correlation between dental arch and the supper airway volume in OSAHS patients was analyzed. Results:The length of the upper dental arch and the height of palate in OSAHS patients were larger than those of the controls(All, P<0. 05). Cross-sectional area of nasopharynx and retropalatal and the total volume of upper airway were negatively correlated with the palatal height and upper dental arch length(P<0. 05), while positively correlated with upper dental arch of molar regions(P<0. 05). Conclusion:The abnormal shape of upper dental arch is related to the airway vol-ume of nasopharynx and retropalatal region in patients with OSAHS.