| ○種別 (必須): | □ | 学術論文 (審査論文)
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| ○言語 (必須): | □ | 英語
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| ○審査 (推奨): | □ | Peer Review
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| ○カテゴリ (推奨): |
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| ○学究種別 (推奨): |
| ○組織 (推奨): | 1. | 徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.臨床歯学系.口腔顎顔面矯正学 (2015年4月1日〜)
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| 2. | 徳島大学.病院.診療科.矯正歯科 (2003年10月1日〜)
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| ○著者 (必須): | 1. | 坂巻 拓馬 ([徳島大学.口腔科学研究科.口腔科学専攻.口腔健康科学講座.口腔顎顔面矯正学])
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| ○学籍番号 (推奨): | □ | ****
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| 2. | 渡邉 佳一郎 ([徳島大学.病院.診療科.矯正歯科])
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| 3. | 岩浅 亮彦
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| 4. | (英) Deguchi Toru (日) (読)
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| ○貢献度 (任意): |
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| 5. | 堀内 信也 ([徳島大学.病院.診療科.矯正歯科])
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| 6. | 田中 栄二 ([徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.臨床歯学系.口腔顎顔面矯正学])
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| ○題名 (必須): | □ | (英) Thread shape, cortical bone thickness, and magnitude and distribution of stress caused by the loading of orthodontic miniscrews: finite element analysis. (日)
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| ○要約 (任意): | □ | (英) Cortical bone thickness is assumed to be a major factor regulating miniscrew stability. We investigated stress distribution in two miniscrews with different thread shapes (type A and B) and in cortical bone of three different thicknesses using three-dimensional (3D) finite element (FE) models. More specifically, 3D FE models of two different miniscrews were created and placed obliquely or vertically into a cylindrical bone model representing different cortical bone thicknesses. When force was applied to the miniscrew, the stress distribution on the screw surface and in the peri-implant bone was assessed using FE methodology. Miniscrew safety was evaluated using a modified Soderberg safety factor. Screw head displacement increased with a decrease in cortical bone thickness, irrespective of screw type. The smallest minimum principal stresses on the screw surfaces remained constant in type A miniscrews on changes in cortical bone thickness. Minimum principal stresses also appeared on the cortical bone surface. Lower absolute values of minimum principal stresses were seen in type A miniscrews when placed vertically and with upward traction in obliquely placed type B miniscrews. Both miniscrews had acceptable safety factor values. Taken together, orthodontists should select and use the suitable miniscrew for each patient in consideration of bone properties. (日)
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| ○キーワード (推奨): | 1. | (英) Cortical Bone (日) (読)
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| 2. | 有限要素解析 (finite element analysis)
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| 3. | (英) Humans (日) (読)
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| 4. | (英) Orthodontic Anchorage Procedures (日) (読)
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| 5. | (英) Orthodontic Appliance Design (日) (読)
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| 6. | (英) Stress, Mechanical (日) (読)
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| 7. | チタン (titanium)
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| ○発行所 (推奨): |
| ○誌名 (必須): | □ | Scientific Reports ([Nature Publishing Group])
(eISSN: 2045-2322)
| ○ISSN (任意): | □ | 2045-2322
ISSN: 2045-2322
(eISSN: 2045-2322) Title: Scientific reportsTitle(ISO): Sci RepPublisher: Nature Portfolio (NLM Catalog)
(Scopus)
(CrossRef)
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| ○巻 (必須): | □ | 12
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| ○号 (必須): | □ | 1
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| ○年月日 (必須): | □ | 西暦 2022年 7月 20日 (令和 4年 7月 20日)
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| ○URL (任意): |
| ○DOI (任意): | □ | 10.1038/s41598-022-16662-w (→Scopusで検索)
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| ○PMID (任意): | □ | 35859046 (→Scopusで検索)
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| ○備考 (任意): | 1. | (英) PublicationType: Journal Article (日)
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| 2. | (英) Thread shape, cortical bone thickness, and magnitude and distribution of stress caused by the loading of orthodontic miniscrews: finite element analysis. Sakamaki T, Watanabe K, Iwasa A, Deguchi T, Horiuchi S, Tanaka E. Sci Rep. 2022 Jul 20;12(1):12367. doi: 10.1038/s41598-022-16662-w. PMID: 35859046 (日)
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