Transmission straight wire appliance treats Angle Ⅱ 1 malocclusion:report of 13 cases
- VernacularTitle:传动直丝弓技术矫治安氏Ⅱ类1分类错13例临床分析
- Author:
Miao HE
;
Na SUN
;
Xiaozhi LI
- Publication Type:Journal Article
- Keywords:
orthodontic wires;
transmission straight wire appliance;
AngleⅡ1 malocclusion;
cephalometric analysis
- From:Journal of Third Military Medical University
2003;0(24):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the clinical effects of transmission straight wire appliance on the treatment of AngleⅡ1 malocclusion and explore its mechanism.Methods Thirteen AngleⅡ1 malocclusion patients (6 males and 7 females) were treated with the appliance by extracting 4 first premolars or 2 first maxillary premolars.The results of cephalometric measurements before and after treatment were statistically analyzed.Results The average treatment time of 13 cases was 15.6 months.The overbite's treatment cost 4.2 months averagely.Overbite,overjet and molar relationship were turned to normal (only one adult case had complete distal in the molar relationship by extracting 2 first maxillary premolar) and lateral appearances were improved after treatment.The results of cephalometric analysis showed that the changes of SNB,ANB,U1-NA angle,L1-NB angle,U1-LI angle,U1-NA length,L1-NB length,L6-MP length,L1C-MP length,overbite,and overjet were of high statistical significance (P0.05).Conclusion Transmission straight wire appliance can quickly and efficiently correct AngleⅡ1 malocclusion.
