2021 Fiscal Year Final Research Report
Water resistance improvement of dental smart cement containing ionic-liquid
Project/Area Number |
19K10184
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 57040:Regenerative dentistry and dental engineering-related
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Research Institution | The University of Tokushima |
Principal Investigator |
HAMADA Kenichi 徳島大学, 大学院医歯薬学研究部(歯学域), 教授 (00301317)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | 歯科用セメント / スマート材料 / 接着強度 / 電荷密度 / グラスアイオノマーセメント |
Outline of Final Research Achievements |
Dental glass ionomer cement exhibits electrical conductivity, and its bonding strength can be reduced due to electrochemical reactions generated by current application through the interface between cement and metal adherend. Furthermore, in the oral cavity, water is absorbed from the immersion liquid such as saliva, and the electrical conductivity and the function of bonding strength reduction are improved in the short term. However, in the long term, ions may elute into the immersion liquid and the electrical conductivity and the function of bonding strength reduction may decrease. In this study, it was indicated that the ion exchange with the immersion liquid in the oral cavity can be balanced to maintain the electrical conductivity and the function of bonding strength reduction in the long term.
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Free Research Field |
生体材料学
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Academic Significance and Societal Importance of the Research Achievements |
歯科用セメントの高性能化にともない高まっている歯質損傷などのリスクを低減し,患者のQOLを維持するため,接着力の低下が可能な歯科用スマートセメントの実用化は急務である。本研究を通じて,市販のグラスアイオノマーセメントが通電剥離型スマートセメントになること,口腔内で長期的に通電剥離能を維持しうることがわかったため,通電方法を確立すれば臨床応用は可能と期待できる。一方,臨床応用を考えると電気伝導性を向上させ,通電剥離に要する時間を短縮する必要性が認められ,報告例がほとんど見当たらないグラスアイオノマーセメントの電気伝導性の研究を発展させる必要性が示された。
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