摘要
目的探讨Herbst矫治器治疗对髁突位置的影响.方法采用国产Herbst矫治器对17例生长发育期安氏Ⅱ1下颌后缩儿童进行临床矫治,分别于戴矫治器前(T1),戴矫治器后1周(T2),矫治器拆除后1周(T3)拍摄关节中位断层片进行测量分析.结果在治疗前,髁突居关节窝中央.当戴用Herbst矫治器1周后,髁突处于显著前移位,关节上、后间隙距离增大,前间隙距离减少,前后间隙面积比(X/Y)显著减少,积极治疗(7个月)结束后,髁突在TMJ中的位置又回到治疗前水平,处于关节窝中央.结论 Herbst矫治器治疗前后髁突位置未发生明显改变, 其远期疗效尚有待进一步研究.
Objective To investigate the influence of Herbst appliance therapy on mandibular condyle position. Method 17 of Class Ⅱ division 1 malocclusion cases were treated with the domestic Herbst appliance. Tomographie analysis was used before wearing Herbst appliance (T1), a week after wearing Herbst appliance(T2) and after debonding Herbst appliance(T3). Result Before therapy, the condyle was nearly in the middle of glenoid fossa, but slightly forward. After patients wore Herbst appliance for a week, condyle moved forward and downward. The distance of upper and posterior glenoid space increased, and that of anterior glenoid fossa space decreased. So the ratio of anterior and posterior space area reduced. After 7 months? active treatment, condyle returned to its former position. Conclusion It showed that Herbst appliance therapy didn't change the position of condyle. However, further study is necessary to understand the long-term effects on TMJ of Herbst appliance in clinic.
出处
《临床口腔医学杂志》
2003年第6期348-350,共3页
Journal of Clinical Stomatology
关键词
HERBST矫治器
治疗
髁突位置变化
分析
Herbst appliance
Class Ⅱ Division 1 Malocclusion
Mandibular Retrusion
Tomographic
TMJ
