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Design and development of absorbable materials that adhere to biological hard tissues and their application to conservative restoration, endodontics, and periodontics

Research Project

Project/Area Number 20K09950
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57030:Conservative dentistry-related
Research InstitutionKyushu University of Health and Welfare

Principal Investigator

Nakamura Mariko  九州保健福祉大学, 臨床心理学部, 教授 (90284067)

Co-Investigator(Kenkyū-buntansha) 吉田 靖弘  北海道大学, 歯学研究院, 教授 (90281162)
阿部 薫明  長崎大学, 医歯薬学総合研究科(歯学系), 准教授 (40374566)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords生体硬組織 / 接着 / 湿性組織 / ポリカルボン酸 / プルラン / リン酸化プルラン / 歯内療法用材料 / 生体安全性 / 歯周外科 / 根管充填用シーラー
Outline of Research at the Start

生体硬組織に接着し、吸収される素材があれば保存修復における歯髄・象牙質の再生、歯内療法における根尖部完全封鎖、歯周治療における薬剤・材料の効果的送達とGTR膜の封鎖性向上など、保存治療系歯学の全分野に革新的な成果をもたらす。しかしながら、現在の歯質接着性材料では、強い接着力を得られるものの非吸収性であり、生体組織に置換される部位には応用できない。そこで本研究では、保存修復・歯質接着で長年培かわれた成果を保存治療系歯学全分野に展開することを目指し、歯や骨に接着し、吸収・置換される新素材の開発を目指す。

Outline of Final Research Achievements

Transmission electron microscopy analysis of the dentin bonding interface revealed that the polycarboxylic acid was partially demineralized to form a gel-like layer on the surface. In addition, a copolymer of 90wt% acrylic acid and 10wt% maleic acid had higher chemical bonding ability than polycarboxylic acid. Based on these results, new functional molecules were designed and synthesized. Pullulan, an absorbable polymer of non-animal origin produced by black yeast and one of the least viscous polysaccharides when dissolved in water, was used to introduce a divalent phosphate group with the expectation of adhesion to biological hard tissues. Phosphorylated pullulan prepared by the synthetic method of treatment with phosphoryl chloride was found to have endotoxin levels below the detection limit.

Academic Significance and Societal Importance of the Research Achievements

生体硬組織に接着し,吸収される素材があれば,保存治療系歯学の全分野に革新的な成果をもたらす。しかしながら,現在の歯質接着性材料では,強い接着力を得られるものの非吸収性であり,生体組織に置換される部位には応用できない。今回の研究結果より,湿性硬組織に接着し,生体内で分解・吸収されて組織に置換する機能性分子を設計・合成するにあたって黒酵母により産生される非動物性由来の吸収性高分子である多糖誘導体プルランを選択した。このプルランに生体硬組織への接着性を期待して2価のリン酸基を導入したリン酸化プルランを創製した。リン酸化プルランのエンドトキシンの値は検出限界であることが確認された。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2023 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results) Book (1 results)

  • [Journal Article] A novel thermos responsible hydrogel composite: Controlled by infra-red irradiation2023

    • Author(s)
      S. Abe, M. NNesabi, S. Safaee, E. Seitoku, Y. Yato, A. Hyono, K. Nakanishi, Y. Era, M. Nakamura, T. Kusaka, A. Valanezhad, T. Takada, and I. Watanabe
    • Journal Title

      Molecular Crystals and Liquid Crystals

      Volume: 755 Issue: 1 Pages: 1-7

    • DOI

      10.1080/15421406.2023.2194600

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ion Capture and Release Ability of Glass Ionomer Cement Containing Nanoporous Silica Particles with Different Pore and Particle Size2021

    • Author(s)
      Endo Ryoshun、Nakanishi Ko、Bando Yosuke、Abe Shigeaki、Maruoka Haruhi、Nakamura Mariko、Akasaka Tsukasa、Yoshida Yasuhiro、Sato Yoshiaki
    • Journal Title

      Materials

      Volume: 14 Issue: 19 Pages: 5742-5742

    • DOI

      10.3390/ma14195742

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] A novel thermos responsible hydrogel composite: Controlled by infra-red irradiation2022

    • Author(s)
      S. Abe, M. Nesabi, S. Safaee, A. Hyono, Y. Era, M. Nakamura, A. Valanezhad, and I. Watanabe
    • Organizer
      KJF-ICOMEP 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 接着性を有した生体吸収性材料による唇顎口蓋裂の新治療法2021

    • Author(s)
      長本香菜子,中西康,吉原久美子,中村真理子,赤坂司,吉田靖弘
    • Organizer
      日本歯科理工学会令和3年度北海道・東北地方会夏季セミナー
    • Related Report
      2021 Research-status Report
  • [Presentation] Chemical modification of nanoporous silica surface for turning controlled drug-release property from dental/medical materials2021

    • Author(s)
      K. Nagamoto, S. Abe, K. Nakanishi, Y. Era, F. Farhana, K. Iwanuma, M. Nakamura, T. Kusaka, Y. Kitagawa.
    • Organizer
      21th Chitose International Forum on Photonics Science & Technology
    • Related Report
      2021 Research-status Report
  • [Book] Proceedings of 21st Chitose International Forum on Science & Technology2022

    • Author(s)
      K. Nagamoto, S. Abe, K. Nakanishi, Y. Era, F. Farhana, K. Iwanuma, M. Nakamura, T. Kusaka, and Y. Kitagawa
    • Total Pages
      82
    • Publisher
      PWC Publishing
    • ISBN
      9784990430184
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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