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The degree of labiolingual tipping of the maxillary central incisor was calculated when the retraction force was applied to different heights of a power arm set mesial or distal to the canine.\nResults: When the power arm was placed mesial to the canine, at the level of 0 mm (bracket slot level), uncontrolled lingual crown tipping of the incisor was observed and the anterior segment of the archwire was deformed downward. At a power arm height of 5.5 mm, bodily movement was produced and the archwire was less deformed. When the power arm height exceeded 5.5 mm, the anterior segment of the archwire was raised upward and lingual root tipping occurred. When the power arm was placed distal to the canine, lingual crown tipping was observed up to a level of 11.2 mm.\nConclusions: Placement of the power arm of an archwire between the lateral incisor and canine enables orthodontists to maintain better control of the anterior teeth in sliding mechanics. 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Optimal Loading Conditions for Controlled Movement of Anterior Teeth in Sliding Mechanics
http://hdl.handle.net/10069/29907
http://hdl.handle.net/10069/299072b5490ed-efa2-4f46-adc9-2f458a554875
名前 / ファイル | ライセンス | アクション |
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AnOrtho79_1102.pdf (561.5 kB)
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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 | Optimal Loading Conditions for Controlled Movement of Anterior Teeth in Sliding Mechanics | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Sliding mechanics | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Power arm | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Anterior teeth retraction | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Finite element method | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Deformation of archwire | |||||
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 |
Tominaga, Jun-ya
× Tominaga, Jun-ya× Tanaka, Motohiro× Koga, Yoshiyuki× Gonzales, Carmen× Kobayashi, Masaru× Yoshida, Noriaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Objective: To determine optimal loading conditions such as height of retraction force on the power arm and its position on the archwire in sliding mechanics. Materials and Methods: A 3D finite element method (FEM) was used to simulate en masse anterior teeth retraction in sliding mechanics. The degree of labiolingual tipping of the maxillary central incisor was calculated when the retraction force was applied to different heights of a power arm set mesial or distal to the canine. Results: When the power arm was placed mesial to the canine, at the level of 0 mm (bracket slot level), uncontrolled lingual crown tipping of the incisor was observed and the anterior segment of the archwire was deformed downward. At a power arm height of 5.5 mm, bodily movement was produced and the archwire was less deformed. When the power arm height exceeded 5.5 mm, the anterior segment of the archwire was raised upward and lingual root tipping occurred. When the power arm was placed distal to the canine, lingual crown tipping was observed up to a level of 11.2 mm. Conclusions: Placement of the power arm of an archwire between the lateral incisor and canine enables orthodontists to maintain better control of the anterior teeth in sliding mechanics. Both the biomechanical principles associated with the tooth's center of resistance and the deformation of the archwire should be taken into consideration for predicting and planning orthodontic tooth movement. |
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書誌情報 |
The Angle Orthodontist 巻 79, 号 6, p. 1102-1107, 発行日 2009-11 |
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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 | 10.2319/111608-587R.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(6), pp.1102-1107; 2009 |