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Development of a numerical simulation model for long-term orthodontic tooth movement with contact boundary conditions using the finite element method

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タイトル: Development of a numerical simulation model for long-term orthodontic tooth movement with contact boundary conditions using the finite element method
その他のタイトル: 矯正力による長期的な歯の移動シミュレーションモデルの開発―接触問題を含めた有限要素法による解析―
著者: 濵中, 僚
著者(別表記) : Hamanaka, Ryo
発行日: 2017年 6月 7日
出版者: Elsevier Inc.
引用: Nagasaki University (長崎大学), 博士(歯学) (2017-06-07)
抄録: Introduction: Although many attempts have been made to simulate orthodontic tooth movement using the finite element method, most were limited to analyses of the initial displacement in the periodontal ligament and were insufficient to evaluate the effect of orthodontic appliances on long-term tooth movement. Numeric simulation of long-term tooth movement was performed in some studies; however, neither the play between the brackets and archwire nor the interproximal contact forces were considered. The objectives of this study were to simulate longterm orthodontic tooth movement with the edgewise appliance by incorporating those contact conditions into the finite element model and to determine the force system when the space is closed with sliding mechanics. Methods: We constructed a 3-dimensional model of maxillary dentition with 0.022-in brackets and 0.019 × 0.025-in archwire. Forces of 100 cN simulating sliding mechanics were applied. The simulation was accomplished on the assumption that bone remodeling correlates with the initial tooth displacement. Results: This method could successfully represent the changes in the moment-to-force ratio: the tooth movement pattern during space closure. Conclusions: We developed a novel method that could simulate the long-term orthodontic tooth movement and accurately determine the force system in the course of time by incorporating contact boundary conditions into finite element analysis. It was also suggested that friction is progressively increased during space closure in sliding mechanics.
記述: 長崎大学学位論文 学位記番号:博(医歯薬)甲第978号 学位授与年月日:平成29年6月7日 / Author: Ryo Hamanaka, Satoshi Yamaoka, Tuan Nguyen Anh, Jun-ya Tominaga, Yoshiyuki Koga, Noriaki Yoshida / Citation: American Journal of Orthodontics and Dentofacial Orthopedics, 152(5), pp.601-612; 2017 / 出版時論題変更
URI: http://hdl.handle.net/10069/37927
ISSN: 08895406
DOI: 10.1016/j.ajodo.2017.03.021
関連リンク : http://hdl.handle.net/10069/37611
権利: © 2017. Published by Elsevier Inc.
資料タイプ: Thesis or Dissertation
原稿種類: ETD
出現コレクション:110 学位論文

引用URI : http://hdl.handle.net/10069/37927



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