Assessment of upper jaw extraction versus upper and lower jaw extraction treatment for class II division 1 malocclusion using peer assessment rating index.
- Author:
Tong-tong YANG
1
;
Yu-jing MI
Author Information
- Publication Type:Journal Article
- MeSH: Bicuspid; Female; Humans; Male; Malocclusion; Malocclusion, Angle Class II; Mandible; Maxilla; Orthodontics, Corrective; Tooth Extraction
- From: West China Journal of Stomatology 2006;24(3):231-239
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo assess the outcome of orthodontic treatment with upper jaw or upper and lower jaw extraction for Class II division 1 malocclusion using the peer assessment rating (PAR) index.
METHODS28 patients with Class II division 1 were extracted two first premolars or second premolars of upper jaw, and 24 patients were extracted four premolars of upper and lower jaw N. The PAR was applied on pre-and post-orthodontic treatment dental casts for the fifty-two cases.
RESULTSThe upper and lower jaw extraction groups had significantly higher initial PAR scores and the weighted PAR total scores (P<0.05). Although significantly different before treatment, both groups were not statistically different after treatment (P>0.05).
CONCLUSIONThe upper and lower jaw extraction cases showed more severe dental displacement. Both treatment can acquire successful results.
