The clinical effects of Invisalign-aided molar distalization in the treatment of mild or moderate crowding in anterior teeth
10.12016/j.issn.2096⁃1456.2018.05.007
- Author:
LI Zhifang
1
;
WANG Weicai
2
;
MAI Lixiang
2
Author Information
1. Zeshan Stomatology Hospital
2. Department of Orthodontics, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology
- Publication Type:Journal Article
- Keywords:
Invisalign technique;
Molar distalization;
Crowding;
Class Ⅱ elastic
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2018;26(5):314-319
- CountryChina
- Language:Chinese
-
Abstract:
Objective: The present study evaluated the clinical effects of Invisalign-aided molar distalization in the treatment of mild or moderate crowding in anterior teeth.
Methods:Eleven adults with class Ⅱ dental malocclusion and a class Ⅰ skeletal pattern were selected as subjects. The patients’ molar occlusion did not exhibit an end-to-end relationship. Subjects were selected for straight profile, mild or moderate crowding in maxillary teeth and normal or mild crowding in mandibular teeth. Nonextraction and Invisalign-aided molar distalization were planned for treatment. Model measurement and cephalometric analysis were performed before and after treatment. A paired t test was used for the statistical analysis.
Results:The crowding and class Ⅱ molar relationship were corrected in all 11 patients. The upper first molars were moved distally by 2.32 mm (t = 3.315, P < 0.01) and were inclined distally by 3.35° (t = 3.959, P < 0.01) on average. The central incisors were protruded by 1.72 ° (t = 3.274, P < 0.01) on average. The buccal movement of the upper first molars was 1.32 mm (t = 2.461, P < 0.05) on average. The above differences were statistically significant.
Conclusion :Upper molar distalization can be achieved using a class Ⅱ elastic-aided Invisalign technique. The end-to-end molar occlusion can be corrected, and front teeth with mild or moderate crowding can be aligned using our treatment protocol.
- Full text:无托槽隐形矫治技术远移磨牙治疗上前牙轻、中度拥挤的效果.pdf
