正常成人发音和鼓气过程中腭咽闭合的影像学比较研究

Imageological comparative study of velopharyngeal closure between articulation and air blowing by typical Mandarin speaker

目的比较正常成人发音和鼓气过程中腭咽闭合运动的差异。方法对12名正常成年女性采取拍摄头颅侧位片的方法,分别拍摄发/i:/音时和鼓气时的头颅侧位片,测量鼓气和发音时的腭咽闭合率和软腭抬升高度。结果实验对象的鼓气状态下腭咽闭合率为62.95%±4.89%,言语状态时腭咽闭合率为75.03%±5.34%,两者之间具有显著性差异;鼓气状态软腭抬升高度平均为(0.583 3±0.563 2)cm,言语状态时软腭抬升高度平均为(1.325 9±0.234 0)cm,两者之间有显著性差异。结论鼓气训练从一定程度对腭咽闭合功能的康复治疗有辅助作用,但这一状态下的腭咽闭合率和软腭抬升高度都低于发音时的平均水平,尚不能完全达到正常人发音时所需要的腭咽闭合的状态。鼓气训练对于改善腭咽闭合运动的有效性还需要进一步深入的研究。

Objective To compare the difference in velopharyngeal closure between articulation and air blowing by typical Mandarin speaker. Methods The rising height of velopharyngeal closure and soft palate elevations during the articulation of/i:/and air blowing was measured using the lateral cephalogram of 12 female adult speakers. Results The average velopharyngeal closure rate of all subjects was 62.95%±4.89%. The mean velopharyngeal closure rate was 75.03%±5.34% during air blowing. There was a significant difference between the two states. The soft palate elevation was 0.583 3 cm and the standard deviation was 0.234 0 during air blowing. The average soft elevation during articulation was 1.325 9 cm and the standard deviation was 0.563 2. There was a significant difference between the two. Conclusion Blowing training may facilitate the rehabilitation of the velopharyngeal function to some extent. However, both the velopharyngeal closure rate and the soft palatal elevation are significantly smaller during air blowing than that of articulation, which can not completely achieve the closure state of the articulation of normal people. The efficiency of air blowing improving velopharyngeal closure needs further investigation.