Root Resorption in Treatment of Deep Overbite by Clear Aligners and Fixed Appliances

doi:10.13701/j.cnki.kqyxyj.2023.02.005

Abstract

Abstract: Objective: To compare the root resorption of non-extracted patients with deep overbite by clear aligners and fixed appliances, and to explore the influential factors of root resorption of central incisors.Methods: Twenty-one cases treated with fix appliances and 15 cases treated with clear aligners were selected. The panoramic radiographs and lateral view of the skull before and after treatment were examined. The root resorption and the effect of correcting deep overbite were compared. The influence factors of root resorption of central incisors were analyzed. Results: The difference of root resorption between two groups was statistically significant by Mann-Whitney U-test (Z=-2.694, P=0.07), while more overbite correction was observed in the fixed appliance group than the clear aligner group by two independent sample t-test (P=0.027). In addition, changes in the inclination of central incisor and maxilla-mandibular position significantly affected root resorption of central incisors by multivariate logistic regression analysis (P<0.07). Conclusion: Fixed appliance treatment leads to heavier root resorption in the central incisor, which might relate to its better correction of deep overbite and its application of continuous force.

Key words: root resorption, fixed appliances, clear aligners, overbite

ZHU Chenjing, ZHENG Ya, LEI Lang. Root Resorption in Treatment of Deep Overbite by Clear Aligners and Fixed Appliances[J]. Journal of Oral Science Research, 2023, 39(2): 113-117.

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