Study on ultra-high speed dynamics in adhesive dentistry by time and space control
| Project/Area Number |
15K11108
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Conservative dentistry
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
Kishikawa Ryuzo 東京医科歯科大学, 歯学部, 非常勤講師 (50376745)
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| Co-Investigator(Kenkyū-buntansha) |
保坂 啓一 東京医科歯科大学, 大学院医歯学総合研究科, 助教 (80451946)
高橋 真広 東京医科歯科大学, 歯学部附属病院, 医員 (20613920)
中島 正俊 東京医科歯科大学, 歯学部附属病院, 講師 (50272604)
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| Project Period (FY) |
2015-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 接着破壊のダイナミクス / 超高速度撮影 / イメージング / 超高速度イメージング / コンポジットレジン / 歯質接着性レジン / 接着破壊 / 高速度撮影 / 超高速度撮影技術 / 歯とレジンとの接着 / 接着歯学 |
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| Outline of Final Research Achievements |
The ultra high speed (UHS) videography imaging technique using a complementary metal oxide semiconductor digital UHS camera at 299,166 frames per second was developed, and successfully enabled visualization of the fracture dynamics at the resin-dentin bonded interfaces under tensile load for the first time in the world. However, the resolution at such high frame rate was insufficient to classify the failure mode as precisely as that of a scanning electron microscopy. Nevertheless, UHS videography can provide more detailed information about the fracture origin and propagation. In the future, UHS videography with even higher frame rate and resolution can help in understanding the mechanism of fracture dynamics at the resin dentin interface and therefore aid in further development of adhesive systems.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では，毎秒30万フレームのCMOSデジタルカメラを使用した超高速（Ultra High Speed, UHS）イメージング技術を開発し，世界で初めて引張り荷重下のコンポジットレジンと象牙質との接着界面における接着破壊力学の可視化に成功し，国際誌に発表した（Hosaka et al., Dent Mater, 2019）．最新の知見では，最高速度は100万フレームに達し，今後，さらに高いフレームレートと解像度を備えたイメージング技法は，接着歯学のみならず，先端歯科材料学における，新しいイノベーション開発に貢献するものとして大きく期待される．
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Report
(5 results)
Research Products
(51 results)
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[Journal Article] The strategies used for curing universal adhesives affect the micro-bond strength of resin cement used to lute indirect resin composites to human dentin2018
Author(s)
Daisuke Araoka, Keiichi Hosaka, Masatoshi Nakajima, Richard Foxton, Thanatvarakorn Ornnicha, Prasansuttiporn Taweesak, Ayaka Yoshimine, Kento Sato, Masahiro Takahashi, Masayuki Otsuki, Junji Tagami.
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Journal Title
Dental Materials Journal
Volume: 37
Issue: 3
Pages: 506-514
DOI
NAID
ISSN
0287-4547, 1881-1361
Year and Date
2018-05-28
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Dentin Bonding Durability of Two-step Self-etch Adhesives with Improved of Degree of Conversion of Adhesive Resins.2017
Author(s)
Kento Sato, Keiichi Hosaka, Masahiro Takahashi, Masaomi Ikeda, Fucong Tian, Wataru Komada, Masatoshi Nakajima, Richard Foxton, Yoshihiro Nishitani, David H Pashley, Junji Tagami
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Journal Title
J Adhes Dent
Volume: 19
Pages: 31-37
Related Report
Peer Reviewed
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[Journal Article] The effects of ethanol on the size-exclusion characteristics of type I dentin collagen to adhesive resin monomers.2016
Author(s)
Chiba A, Zhou J, Nakajima M, Tan J, Tagami J, Scheffel DL, Hebling J, Agee KA, Breschi L, Grégoire G, Jang SS, Tay FR, Pashley DH.
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Journal Title
Acta Biomater.
Volume: 33
Pages: 235-41
DOI
Related Report
Peer Reviewed
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[Presentation] 東京医科歯科大学大学院における国際歯科臨床教育コースの導入と取り組み―第１報―.2017
Author(s)
關奈央子, 金澤 学, 駒ヶ嶺友梨子, ジャネルモロス, 水谷幸嗣, 保坂啓一, 駒田 亘, 須永昌代, 川口陽子, 森尾郁子, 木下淳博.
Organizer
第36回日本歯科医学教育学会総会・学術大会
Related Report
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[Book] 接着の論点.2016
Author(s)
松村英雄，二階堂徹，保坂啓一他
Total Pages
156
Publisher
ヒョーロン・パブリッシャーズ
Related Report
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[Book] 接着歯学2015
Author(s)
保坂啓一ら著者多数
Total Pages
200
Publisher
医歯薬出版
Related Report
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