Effect of bracket slot and archwire dimensions on anterior tooth movement during space closure in sliding mechanics: A 3-dimensional finite element study

Jun Ya Tominaga, Hiroya Ozaki, Pao Chang Chiang, Mayumi Sumi, Motohiro Tanaka, Yoshiyuki Koga, Christoph Bourauel, Noriaki Yoshida

研究成果: 雜誌貢獻文章

38 引文 斯高帕斯(Scopus)

摘要

Introduction It has been found that controlled movement of the anterior teeth can be obtained by attaching a certain length of power arm onto an archwire in sliding mechanics. However, the impact of the archwire/bracket play on anterior tooth movement has not been clarified. The purpose of this study was to compare the effect of the power arm on anterior tooth movements with different dimensions of bracket slots and archwires. Methods A 3-dimensional finite element method was used to simulate en-masse anterior tooth retraction in sliding mechanics. Displacements of the maxillary central incisor and the archwire deformation were calculated when applying retraction forces from different lengths of power arms. Results When a 0.017 × 0.022-in archwire was engaged into the 0.018-in slot bracket, bodily movement of the incisor was obtained with 9.1-mm length of the power arm. When a 0.022-in slot system was coupled with a 0.019 × 0.025-in archwire, bodily movement was observed with a power arm length of 11.6 mm. Conclusions Archwire/bracket play has a remarkable impact on anterior tooth movement. An effective torque application to the anterior teeth becomes clinically difficult in sliding mechanics combined with power arms when the archwire/bracket play is large.
原文英語
頁(從 - 到)166-174
頁數9
期刊American Journal of Orthodontics and Dentofacial Orthopedics
146
發行號2
DOIs
出版狀態已發佈 - 一月 1 2014
對外發佈Yes

ASJC Scopus subject areas

  • Orthodontics

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