Effects of traction arch combined with protraction on dentofacial changes of anterior crossbite in mixed dentition
- VernacularTitle:牵引弓联合前牵引矫治替牙期前牙反的牙颌结构变化
- Author:
Wenbo PENG
;
Shaoying LIAO
;
Jufeng CHEN
- Publication Type:Journal Article
- Keywords:
AngleⅢ malocclusion;
Maxillary protraction;
Mixed dentition
- From:
Journal of Practical Stomatology
1996;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate effects of traction arch combined with protraction on dental and skeletal changes in patients with Angel Ⅲ malocclusion in mixed dentition.Methods:Seventeen patients with Angle Ⅲ malocclusion were selected and treated with traction arch combined with protraction. Cephalometric radiographs were taken 6 months before the initiation of treatment, at the initiation of treatment and 6 months after treatment.Cephalometric analysis was used to examine the dental and skeletal changes.Results:Significant changes of maxillary anterior displacement and mandibular downward and backward rotation were observed in the seventeen patients:SNA increased 2.6?,A point moved forward 3.1 mm. The overjet correction of anterior teeth was 5.2 mm, 63% of the overjet correction was due to skeletal changes and 37% due to dental changes. Conclusion:Traction arch combined with protraction is a simple and effective apparatus in the treatment of Angle Ⅲ malocclusion.
