Influence of insertion depth on stress distribution in orthodontic miniscrew and the surrounding bone by finite element analysis

• Material Type: 博士論文
• Title: Influence of insertion depth on stress distribution in orthodontic miniscrew and the surrounding bone by finite element analysis
• Author/Editor: Hirai, Yuzo; Watanabe, Keiichiro; Deguchi, Toru; Ueda, Kanji; Hamada, Kenichi; Tanaka, Eiji
• Author Heading: Hirai, Yuzo; Watanabe, Keiichiro; Deguchi, Toru; Ueda, Kanji; Hamada, Kenichi; Tanaka, Eiji
• Publication, Distribution, etc.: The Japanese Society for Dental Materials and Devices
• Publication Date: 2021-09-25
• Publication Date (W3CDTF): 2021-09-25
• Alternative Title: 歯科矯正用アンカースクリューおよび周囲骨の応力分布に及ぼす埋入深さの影響 : 有限要素法による解析
• Periodical title: Dental Materials Journal
• No. or year of volume/issue: 40 5
• Volume: 40
• Issue: 5
• Pages: 1270-1276
• ISSN (Periodical Title): ISSN : 1881-1361; ISSN : 0287-4547
• Degree grantor/type: 徳島大学
• Date Granted: 2022-01-13
• Dissertation Number: 甲第3567号
• Degree Type: 博士（歯学）
• Text Language Code: eng
• Subject Heading: Finite element analysis; Orthodontic miniscrew; Insertion depth; Insertion angle
• Target Audience: 一般
• Note (General): We aimed to elucidate stress distribution in miniscrews and the surrounding bone when miniscrews inserted at different depths were implanted vertically or obliquely. The distributions of the equivalent stress on the screw surface and the minimum principal stress in the surrounding bone were calculated using finite element models. When the miniscrews were inserted vertically and obliquely, screw head displacement, greatest equivalent stress on the miniscrew surface, and absolute value of minimum principal stresses in the surrounding bone decreased with increasing insertion depth. Stresses in the obliquely inserted miniscrew with upward traction were smaller than in other insertion conditions, irrespective of insertion depth. With the application of orthodontic force, stress distribution around the miniscrew and surrounding bone is closely related to the insertion depth and insertion angle, which mutually affect each other. In particular, the obliquely inserted miniscrew with upward traction might be the most secure against screw failure and fracture.
• Format (IMT): application/pdf
• Access Restrictions: インターネット公開
• Rights (production): © 2021 The Japanese Society for Dental Materials and Devices
• Related Material (DOI): 10.4012/dmj.2020-400
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 徳島大学 : 徳島大学機関リポジトリ

Table of Contents

http://repo.lib.tokushima-u.ac.jp/files/public/11/116714/20220128114328176078/k3567_abstract.pdf fulltext

http://repo.lib.tokushima-u.ac.jp/files/public/11/116714/20220128114328286084/k3567_review.pdf fulltext

http://repo.lib.tokushima-u.ac.jp/files/public/11/116714/20220128114328440118/k3567_fulltext.pdf fulltext