[使用 Twin-block 矫治器和 II 类牵引矫治青少年安氏 II 类 1 分类下颌后缩错牙合患者颞下颌关节变化的比较]

[Comparison of temporomandibular joint changes in adolescent Class II devision 1 malocclusion patients with mandibular retrusion treated with Twin-block and Class II elastics].

作者信息

Mai Lixiang, Yao Yu, Zhang Sheng, Wang Dawei, Zhang Zhiguang

机构信息

Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat- sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.

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出版信息

Zhonghua Kou Qiang Yi Xue Za Zhi. 2014 Jul;49(7):394-8.

PMID:25257450

Abstract

OBJECTIVE

To compare the temporomandibular joint changes in adolescent Class II division 1 malocclusion patients with mandibular retrusion treated with Twin- block and Class II elastics.

METHODS

Sixty Class II division 1 malocclusion patients with mandibular retrusion were divided into 3 groups (Twin- block group, Class II elastic group and control group, 20 patients in each group) randomly. Differences of condylar process morphology were compared using cone- beam CT (CBCT) before and after treatment.

RESULTS

Condylar largest anteroposterior diameter and upper condylar height increased after treatment in both Twin-block group and Class II elastic group. The condylar largest anteroposterior diameter and upper condylar height were longer in both Twin- block group [(8.51 ± 1.48) and (7.39 ± 1.42) mm] and Class II elastic group [(8.44 ± 1.03) and (7.24 ± 0.89) mm] than those in the control group [(7.47 ± 1.27) and (6.47 ± 1.56) mm] (P<0.05). No significant difference was found in other measurements (P>0.05).

CONCLUSIONS

Condylar largest anteroposterior diameter and upper condylar height in Class II division 1 malocclusion patients increased after treatment using Twin- block and Class II elastics. There was no significant difference between two groups.

摘要

目的

比较使用双阻板矫治器和Ⅱ类牵引治疗的下颌后缩青少年安氏Ⅱ类1分类错牙合患者的颞下颌关节变化。

方法

将60例下颌后缩的安氏Ⅱ类1分类错牙合患者随机分为3组（双阻板矫治器组、Ⅱ类牵引组和对照组，每组20例）。使用锥形束CT（CBCT）比较治疗前后髁突形态的差异。

结果

双阻板矫治器组和Ⅱ类牵引组治疗后髁突最大前后径和髁突上部高度均增加。双阻板矫治器组[（8.51±1.48）和（7.39±1.42）mm]和Ⅱ类牵引组[（8.44±1.03）和（7.24±0.89）mm]的髁突最大前后径和髁突上部高度均长于对照组[（7.47±1.27）和（6.47±1.56）mm]（P<0.05）。其他测量指标差异无统计学意义（P>0.05）。