摘要
目的探讨阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者下颌逐步前伸过程中颞下颌关节盘位置的改变。方法选取对口腔矫治器治疗反应良好的21例OSAHS患者,戴用特制口腔装置对其在下颌闭口位,最大前伸量的68%、75%和100%这4个位点上行磁共振成像扫描,测量不同位点时的盘突角度和颞下颌关节盘位置的变化。结果 1下颌前伸量的68%、75%及100%的关节盘和髁突间角度与闭口位均不同(P均<0.05)。2在下颌前伸的过程中,关节盘相对于髁突向后移动。3除75%与100%组间的x坐标值差异无统计学意义外,关节盘的x、y坐标值均不同(P<0.05)。结论随着下颌前移位的增加,关节盘相对髁突向后移动,下颌前伸致最大前伸位75%之后,关节盘的移动受到限制。
Objective To observe the changes in position of temporomandibular joint disc during mandibular advancement by mandibular advancement appliance in obstructive sleep apnea / hypopnea syndrome( OSAHS)patients. Methods 21 OSAHS patients who had been successfully treated by mandibular advancement appliances were recruited for the study. A custom- made oral device was used to keep the mandible in advancement at 0%,68%,75%,100% of the maximum advancement. All joints were scanned oblique- sagittally by magnetic resonance imaging for investigation the Disk- condyle angle and the position of temporomandibular joint disc. Results 1) The disk- condyle angles increased significantly( P < 0. 05) when mandibular was advanced 68%,75%,100% respectively. 2) The articular disc moved backward while the conlyle moving forward. 3) The x and y coordinate values of the discs were different significantly( P < 0. 05) excepting the values of x coordinate in 75% and 100%. Conclusion The disc moves backward when the condyle moves forward. The disc is not able to backward anymore when the condyle moves forward more than 75% of the maximum forward value.
出处
《宁夏医科大学学报》
2015年第6期676-679,共4页
Journal of Ningxia Medical University
基金
国家自然科学基金(81260171)
宁夏科技成果转化资金(200612)
