[MBT straight wire for Class II division I malocclusion cases].
OBJECTIVE
To evaluate the therapeutic effects of MBT straight wire on extraction case of Class II division I.


METHODS
Thirty-six class II division I malocclusion patients were treated with MBT straight wire by extracting 4 bicuspid premolars or 2 maxillary bicuspid premolars. The X-ray cephalograms were analyzed before and after the treatment of MBT straight wire.


RESULTS
After the treatment, the overjet was reduced by 6.04 mm (P < 0.01); U1-NA was reduced by 15.43 degrees (P <0.01); and U1-NA (mm) was reduced by 4.71 mm (P <0.01). ANB was significantly reduced (P < 0.05).


CONCLUSIONS
MBT straight wire not only shortens the operation but also shows superior effect for Class II division I malocclusion cases.
Lei
Yong-hua
YH
Department of Stomatology, Xiangya Hospital, Central South University, Changsha, China. lyh8484123@126.com
Jian
Xin-chun
XC
Lu
Yan-qin
YQ
D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D016382:Orthodontic Appliance Design; D009969:Orthodontic Wires; D009971:Orthodontics, Corrective / Q000295:instrumentation* / Q000379:methods