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Nondestructive Analysis of Tooth - Adhesive Interfaces by Surface Sensitive XAFS.

Research Project

Project/Area Number 24890061
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Dental engineering/Regenerative dentistry
Research InstitutionTokyo Medical and Dental University

Principal Investigator

WADA Takahiro  東京医科歯科大学, 医歯(薬)学総合研究科, 助教 (10632317)

Project Period (FY) 2012-08-31 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords歯科材料 / XAFS / 表面・界面分析 / X線光電子分光 / 歯学 / 生体材料 / 歯科理工学 / 表面分析 / X線吸収微細構造
Research Abstract

Dental adhesives are used to bond the dental materials to teeth. To obtain high durability and adhesive strength, informations about the tooth (enamel/dentin) - adhesive interface are extremely important. However, conventional analysis methods have some limitations, such as destructive. X-ray absorption fine structure (XAFS), which is one of spectroscopic methods, makes possible to estimate the various properties (electronic state, peripheral atoms, coordination numbers and the bond distance) of a particular atom in the substance. In this study, we analyze the chemical state of Ca in hydroxyapatite (HAp)-10-methacryloyloxydecyl dihydrogen phosphate (MDP) mixture. MDP is widely used as an adhesive monomer.Surface sensitive XAFS techniques are applied for the HAp/MDP interface analysis. As results, we found that HAp - 10-MDP interface is thin MDP-Ca layer ( < 100 nm), and its depth of layer is depend on treatment condition (the ratio of HAp and MDP solution and the treatment period).

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • Research Products

    (6 results)

All 2014 2013

All Presentation (6 results)

  • [Presentation] Confocal XAFS & XRF開発と実デバイス測定への応用2014

    • Author(s)
      和田敬広・村田尚義・上原広充・丹羽尉博・仁谷浩明・宇尾基弘・朝倉清高
    • Organizer
      第27回日本放射光学会年会放射光科学合同シンポジウム
    • Place of Presentation
      広島国際会議場(広島)
    • Related Report
      2013 Final Research Report
  • [Presentation] ポリキャピラリー集光マイクロビームを用いたmicro XAFSによる失活ガスセンサーの分析2014

    • Author(s)
      和田敬広・村田尚義・上原広充・鈴木卓弥・小林誠・岡田夕佳里・丹羽尉博・仁谷浩明・宇尾基弘・朝倉清高
    • Organizer
      物構研サイエンスフェスタ2013
    • Place of Presentation
      つくば国際会議場(エポカルつくば)(茨城)
    • Related Report
      2013 Final Research Report
  • [Presentation] Confocal XAFS & XRF 開発と実デバイス測定への応用2014

    • Author(s)
      和田敬広, 村田尚義, 上原広充, 丹羽尉博, 仁谷浩明, 宇尾基弘, 朝倉清高
    • Organizer
      第27回日本放射光学会年会 放射光科学合同シンポジウム
    • Place of Presentation
      広島国際会議場(広島)
    • Related Report
      2013 Annual Research Report
  • [Presentation] ポリキャピラリー集光マイクロビームを用いたmicro XAFSによる失活ガスセンサーの分析2014

    • Author(s)
      和田敬広, 村田尚義, 上原広充, 鈴木卓弥, 小林誠, 岡田夕佳里, 丹羽尉博, 仁谷浩明, 宇尾基弘, 朝倉清高
    • Organizer
      物構研サイエンスフェスタ2013
    • Place of Presentation
      つくば国際会議場(エポカルつくば)(茨城)
    • Related Report
      2013 Annual Research Report
  • [Presentation] S-PRGフィラー溶出液に浸漬したヒト歯質中ホウ素の^11B-NMRによる構造解析2013

    • Author(s)
      和田敬広・本郷敏雄・宇尾基弘
    • Organizer
      第62回日本歯科理工学会学術講演会
    • Place of Presentation
      日本歯科大学新潟生命歯学部校舎(新潟)
    • Related Report
      2013 Final Research Report
  • [Presentation] S-PRGフィラー溶出液に浸漬したヒト歯質中ホウ素の11B-NMRによる構造解析2013

    • Author(s)
      和田敬広, 本郷敏雄, 宇尾基弘
    • Organizer
      第62回日本歯科理工学会学術講演会
    • Place of Presentation
      日本歯科大学 新潟生命歯学部校舎(新潟)
    • Related Report
      2013 Annual Research Report

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Published: 2012-11-27   Modified: 2019-07-29  

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