锥形束CT研究正畸治疗前后的单侧后牙正锁合的髁突变化

doi:10.16098/j.issn.0529-1356.2015.06.015

解剖学报 ›› 2015, Vol. 46 ›› Issue (6): 812-818.doi: 10.16098/j.issn.0529-1356.2015.06.015

锥形束CT研究正畸治疗前后的单侧后牙正锁合的髁突变化

王鑫¹ 沈焕^2* 杨永进² 李志韧^2*

1. 辽宁医学院研究生院，辽宁锦州 121001; 2. 中国人民解放军第二炮兵总医院口腔科，北京 100088

收稿日期:2015-06-03 修回日期:2015-07-16 出版日期:2015-12-06 发布日期:2015-12-06
通讯作者: 沈焕；李志韧 E-mail:LiZhiRen001@163.com

Cone beam CT evaluation of unilateral scissors-bite posterior molar patients with orthodontic treatment: condylar morphology and location

WANG Xin¹SHEN Huan ^2* YANG Yong-jin² LI Zhi-ren ^2*

1. Graduate School of Liaoning Medical University, Liaoning Jinzhou 121001, China; 2. Department of Stomatology of PLA Second Artillery General Hospital, Beijing 100088, China

Received:2015-06-03 Revised:2015-07-16 Online:2015-12-06 Published:2015-12-06
Contact: SHEN Huan ；LI Zhi-ren E-mail:LiZhiRen001@163.com

摘要/Abstract

摘要：

目的应用锥形束CT(CBCT)研究分析单侧后牙正锁合患者的双侧髁突形态及其在关节窝内位置的差异，以及正锁合解除后，患者髁突形态及位置的代偿性改建情况，以期为正畸临床诊疗提供早期依据。方法选择单侧后牙正锁合18～28岁患者20例为实验组，同期选择安氏Ⅰ类轻度拥挤错颌18~30岁患者25例为对照组，进行面部锥形束CT拍摄，利用3D Examvision成像系统软件进行三维重建，描记测量髁突形态及位置的点和线，对7个不同的测量值进行统计学分析。结果正畸治疗前，对照组左右两侧髁突形态及其在关节窝内的位置差异无统计学意义（P＞0.05），实验组正锁合侧关节窝深度及髁突高度高于非锁合侧，差异具有统计学意义（t=13.271,t=15.278, P＜0.01）。正畸治疗正锁合并稳定保持3个月后，实验组正锁合侧关节前间隙、关节后间隙变化与治疗前相比差异具有统计学意义（t=5.524,t=-5.119,P＜0.01）,关节前间隙治疗前大于治疗后; 关节后间隙治疗前小于治疗后。实验组非锁合侧治疗前后髁突形态及其位置变化的差异无统计学意义（P＞0.05）。结论单侧后牙正锁合患者双侧髁突形态及其在关节窝内的位置存在差异，矫治正锁合并稳定保持3个月后，锁合侧关节有向前下移动的趋势，而髁突形态并无明显变化。

关键词: 正锁合, 髁突, 锥形束CT（CBCT）, 人

Abstract:

Objective To analyse the condylar morphology and location of the scissors-bite patients by cone beam computed tomography(CBCT),and investigate the remodeling changes of condylar after scissors-bite side solved. Methods Twenty cases between 18-28 years old with unilateral scissors-bite were selected as the experimental group and 25 cases between 18-30 years old with ClassⅠmalocclusion were selected as the control group.All the forty-five subjects had no orthodontic treatment before. Both groups had three-dimensional CBCT imaging with examvision system. Different measurement points and lines of the condylar morphology and location, and 7 measured values were statisticallly analyzed. Results None statistically significant was observed in control group（P＞0.05）, The mandibular fossa depth and the condylar height showed statistically significant differences between the scissors-bite and non-scissors-bite sides（t=13.271,t=15.278, P＜0.01）. After treatment and kept stable for 3 month, statistical significances of anterior joint space and posterior joint space were found as compared with before（t=5.524,t=-5.119,P＜0.01）. Conclusion There are differences in condylar morphology and location of unilateral scissors-bite posterior molar patients, after -bite solved for 3 month. There is a tendency to more downward and forward positions in fossa, and there are no special characteristic changes in the condylar morphology observed in this study.

Key words: Scissors-bite, Condylar, Cone beam CT(CBCT), Human

王鑫沈焕* 杨永进李志韧*. 锥形束CT研究正畸治疗前后的单侧后牙正锁合的髁突变化[J]. 解剖学报, 2015, 46(6): 812-818.

WANG Xin SHEN Huan* YANG Yong-jin LI Zhi-ren*. Cone beam CT evaluation of unilateral scissors-bite posterior molar patients with orthodontic treatment: condylar morphology and location[J]. AAS, 2015, 46(6): 812-818.

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锥形束CT研究正畸治疗前后的单侧后牙正锁合的髁突变化

Cone beam CT evaluation of unilateral scissors-bite posterior molar patients with orthodontic treatment: condylar morphology and location

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