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An In Vivo 3D Micro-CT Evaluation of Tooth Movement After the Application of Different Force Magnitudes in Rat Molar
http://hdl.handle.net/10069/29905
http://hdl.handle.net/10069/29905cef8301f-d440-4f24-8cb9-538cdcbf83d5
名前 / ファイル | ライセンス | アクション |
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AnOrtho79_703.pdf (1.6 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2012-11-30 | |||||
タイトル | ||||||
タイトル | An In Vivo 3D Micro-CT Evaluation of Tooth Movement After the Application of Different Force Magnitudes in Rat Molar | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Tooth movement | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | In vivo micro-CT | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | FEM | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Rat molar | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Time lapse | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Superimposition | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Gonzales, Carmen
× Gonzales, Carmen× Hotokezaka, Hitoshi× Arai, Yoshinori× Ninomiya, Tadashi× Tominaga, Junya× Jang, Insan× Hotokezaka, Yuka× Tanaka, Motohiro× Yoshida, Noriaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Objective: To investigate the precise longitudinal change in the periodontal ligament (PDL) space width and three-dimensional tooth movement with continuous-force magnitudes in living rats. Materials and Methods: Using nickel-titanium closed-coil springs for 28 days, 10-, 25-, 50-, and 100-g mesial force was applied to the maxillary left first molars. Micro-CT was taken in the same rat at 0, 1, 2, 3, 10, 14, and 28 days. The width of the PDL was measured in the pressure and tension sides from 0 to 3 days. Angular and linear measurements were used to evaluate molar position at day 0, 10, 14, and 28. The finite element model (FEM) was constructed to evaluate the initial stress distribution, molar displacement, and center of rotation of the molar. Results: The initial evaluation of PDL width showed no statistical differences among different force magnitudes. Tooth movement was registered 1 hour after force application and gradually increased with time. From day 10, greater tooth movement was observed when 10 g of force was applied. The FEM showed that the center of rotation in the molar is located in the center of five roots at the apical third of the molar roots. Conclusion: The rat's molar movement mainly consists of mesial tipping, extrusion of distal roots, intrusion of mesial root, palatal inclination, and mesial rotation. Although the initial tooth movement after the application of different force magnitudes until day 3 was not remarkably different, 10 g of force produced more tooth movement compared with heavier forces at day 28. |
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書誌情報 |
The Angle Orthodontist 巻 79, 号 4, p. 703-714, 発行日 2009-07 |
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出版者 | ||||||
出版者 | E H Angle Orthodontists Research & Education Foundation, Inc. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00033219 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00525451 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.2319/071308-366.1 | |||||
権利 | ||||||
権利情報 | © 2009 by The EH Angle Education and Research Foundation, Inc. | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The Angle Orthodontist, 79(4), pp.703-714; 2009 |