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The Effect of Composition Distribution in Complex-oxide Filler on Flexural Strength of Oxide/Resin Composites

Research Project

Project/Area Number 18K09631
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57040:Regenerative dentistry and dental engineering-related
Research InstitutionTsuruoka National College of Technology

Principal Investigator

Kodera Takayuki  鶴岡工業高等専門学校, その他部局等, 准教授 (80456433)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords歯冠 / フィラー / レジン歯 / ナノ構造 / 歯科材料 / 微粒子 / 曲げ強度 / 微構造 / 酸化物フィラー / ハイブリッドレジン / コンポジットレジン / コンポジット / 複合材料
Outline of Final Research Achievements

In this study, it tried to control the dispersion state of the oxide in the hybrid oxide filler. The effect of the microstructures of filler on the flexural strength of the dental composites was investigated. The particle characteristics were also investigated. It succeeded in changing the oxide dispersion state in the hybrid oxide filler with silica and zirconia. It was important that the filler surface structure was uneven, and that silica was distributed on the filler surface in order to improve the bending strength of the crown.

Academic Significance and Societal Importance of the Research Achievements

歯冠を代表とする酸化物フィラー/レジンの複合材料では、複合材料の機械的強度を向上させるにあたってフィラーの粒子径、粒径分布、形状、化学組成の観点からアプローチするのが一般的である。そのような中、本研究では、フィラー内の酸化物分散状態が複合材料の機械的強度に大きく影響することを明らかにしたことに学術的意義がある。また、本研究の成果は、歯冠の曲げ強度についての理解を大幅に進めるものであり、これまで不可能であったレジン系歯冠の大臼歯への適用を実現するための開発指針基盤となりうることに社会的意義がある。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2020 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Preparation of Spherical Silica Based-Fillers with Zirconia for Dental Composite by Spray Pyrolysis2020

    • Author(s)
      Kodera Takayuki
    • Journal Title

      Proceedings of the 8th IIAE International Conference on Industrial Application Engineering 2020

      Volume: 8 Pages: 88-92

    • DOI

      10.12792/iciae2020.019

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 噴霧熱分解法による歯冠用複合フィラーの調製2020

    • Author(s)
      小寺喬之
    • Organizer
      令和2年度山形化学工学懇話会技術講演会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Preparation of Spherical Silica Based-Fillers with Zirconia for Dental Composite by Spray Pyrolysis2020

    • Author(s)
      Kodera Takayuki
    • Organizer
      The 8th IIAE International Conference on Industrial Application Engineering 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Preparation of Spherical Silica Based-Fillers with Zirconia for Dental Composite by Spray Pyrolysis2020

    • Author(s)
      小寺喬之
    • Organizer
      The 8th IIAE International Conference on Industrial Application Engineering 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 歯冠用ナノ複合フィラーの調製および粉体特性2018

    • Author(s)
      小寺 喬之
    • Organizer
      粉体工学会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2023-01-30  

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