Twin-block 矫治器治疗安氏Ⅱ类错[牙合]髁突变化的荟萃分析

Meta-analysis of condylar changes produced by a Twin-block appliance in Class Ⅱ malocclusion.

机构信息

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.

出版信息

Hua Xi Kou Qiang Yi Xue Za Zhi. 2023 Aug 1;41(4):463-470. doi: 10.7518/hxkq.2023.2023052.

DOI:10.7518/hxkq.2023.2023052

PMID:37474479

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10372524/

Abstract

OBJECTIVES

To evaluate the effects of a Twin-block appliance on the condyles of patients with ClassⅡmalocclusion by conducting a systematic review and a Meta-analysis.

METHODS

Pubmed, Embase, Cochrane Library, Chinese BioMedical Literature Database, China National Knowledge Infrastructure, and VIP Database were electronically searched. Randomized controlled trials, controlled clinical trials, and single-arm trials on condylar changes produced by a Twin-block appliance in patients with ClassⅡmalocclusion were included. Two reviewers independently extracted and assessed the risk of bias. Meta-analyses were conducted with Review Manager 5.3.

RESULTS

Eight studies were included; among which, seven were of high quality. After treatment with a twin block appliance, condyles moved anteriorly. The anterior joint spaces decreased (<0.000 01), whereas the posterior spaces increased (<0.000 01). The superior spaces were not changed (=0.11). Moreover, a significant difference was observed in the increase of the condylar space index (<0.000 01). After treatment, the anteroposterior diameters of the condyles and condylar height increased (=0.000 2 and <0.000 01, respectively). By contrast, no significant changes were discovered in the medial external diameters of the condyles (=0.42).

CONCLUSIONS

A Twin-block appliance can promote the growth of a condyle in the posterior and upper direction and move it forward in favor of the correction of Class Ⅱ malocclusion.

摘要

目的

通过系统评价和荟萃分析评估 Twin-block 矫治器对安氏Ⅱ类错[牙合]患者髁突的影响。

方法

电子检索 Pubmed、Embase、Cochrane 图书馆、中国生物医学文献数据库、中国知网和维普数据库。纳入关于 Twin-block 矫治器治疗安氏Ⅱ类错[牙合]患者髁突变化的随机对照试验、对照临床试验和单臂试验。由 2 位评价者独立提取资料并评价偏倚风险。采用 Review Manager 5.3 进行荟萃分析。

结果

共纳入 8 项研究，其中 7 项研究质量较高。使用 Twin-block 矫治器治疗后，髁突向前移动。前关节间隙减小（<0.000 01），而后关节间隙增大（<0.000 01）。上关节间隙无明显变化（=0.11）。此外，髁突间隙指数的增加有显著差异（<0.000 01）。治疗后，髁突前后径和髁突高度增加（=0.000 2 和 <0.000 01），而髁突内外径无明显变化（=0.42）。