Orthodontic treatment of skeletal ClassⅢpatients with mandibular third molar extraction in both post-puberty and adult
10.3760/cma.j.issn.1002-0098.2011.05.007
- VernacularTitle:拔除下颌第三磨牙矫治14～23岁骨性Ⅲ类错(牙合)的临床效果观察
- Author:
Li SU
1
;
Ying L(U)
;
Hong-Mei WANG
Author Information
1. 首都医科大学口腔医学院
- Keywords:
Malocclusion,Angle Class Ⅲ;
Orthodontics,corrective;
Molar,third
- From:
Chinese Journal of Stomatology
2011;46(5):286-289
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the skeletodental changes after extracting mandibular third molars in skeletal Class Ⅲ patients in both post-puberty and adult.Methods Nineteen skeletal Class Ⅲ patients in post-puberty or adult(16 female,3 male)successfully treated with extracting mandibular third molars were included in the study.Cephalograms were analyzed to assess the skeletal and dental changes before and after treatment.Paired t-test was performed for statistical analysis of the data.Results The results revealed that the main changes were upright[(12.37±6.81)°]and distal movement[(3.16±1.23)mm]of the mandibular molars,and retraction[(1.98 ±1.36)mm]of the mandibular incisors.There was a significant improvement in overjet[(2.75±1.65)mm].Conclusions The lower molars and incisors could be distalized significantly with extraction of the lower third molars.
