Meta-analysis of condylar changes produced by a Twin-block appliance in Class Ⅱ malocclusion / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 463-470, 2023.
Article
in English
| WPRIM
| ID: wpr-1007928
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 (P<0.000 01), whereas the posterior spaces increased (P<0.000 01). The superior spaces were not changed (P=0.11). Moreover, a significant difference was observed in the increase of the condylar space index (P<0.000 01). After treatment, the anteroposterior diameters of the condyles and condylar height increased (P=0.000 2 and P<0.000 01, respectively). By contrast, no significant changes were discovered in the medial external diameters of the condyles (P=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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Temporomandibular Joint
/
Bone and Bones
/
China
/
Cephalometry
/
Orthodontic Appliances, Functional
/
Malocclusion, Angle Class II
Limits:
Humans
Country/Region as subject:
Asia
Language:
English
Journal:
West China Journal of Stomatology
Year:
2023
Type:
Article
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