The analysis of tooth movement in the orthodontic treatment by Empower appliance following tooth extraction
10.3969/j.issn.1001-3733.2015.05.016
- VernacularTitle:Empower 双核矫治器拔牙矫治的牙齿移动分析
- Author:
Hao JIANG
;
Hongfa LI
;
Mingcan ZHANG
- Publication Type:Journal Article
- Keywords:
Empower appliance;
Bimaxillary dentoalveolar protrusion;
Extraction treatment;
Analysis oftooth movement
- From:
Journal of Practical Stomatology
2015;(5):669-673
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the tooth movement in the orthodontic treatment by Empower appliance following tooth extraction. Methods:40 cases with bimaxillary dentoalveolar protrusion were divided into 2 groups(n =20).After extraction of all first premolars of each case,the patients were treated by Empower appliance and Damon3-Mx appliance respectively without palatal enhance measure. Before and after treatment the patients were examined by cephalometric roentgengraphy with 1 9 measurements,the data were analysed by independent sample t test.Results:Tooth indicators∠UI-SN,∠UI-PP,∠L1 -MP,∠U1 -L1 ,UIE-PTV and LIE-PTV before and after the treatment in each group,and the variations between the 2 groups were significantly different(P <0.05).UM-PTV,LM-PTV, UIA-PTV,LIA-PTV,UL-EP,LL-EP and Z Angle were significant changed after treatment(P <0.05),no significant difference was found between the 2 groups after treatment(P >0.05).Conclusion:Empower appliance is more effective than Damon3-Mx in the treatment of bimaxillary dentoalveolar protrusion by anterior tooth torque control,upper and lower front teeth adduction and improvement of soft tissue lateral profile.
