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Development of Zn-Sr/Li glass with the ability to control infection and promote hard tissue regeneration

Research Project

Project/Area Number 20K09937
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 InstitutionOsaka University

Principal Investigator

Kitagawa Haruaki  大阪大学, 大学院歯学研究科, 助教 (50736246)

Co-Investigator(Kenkyū-buntansha) 佐々木 淳一  大阪大学, 大学院歯学研究科, 講師 (50530490)
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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords歯科材料 / バイオセラミックス / 感染制御 / 硬組織誘導 / ドラッグデリバリー / 歯学
Outline of Research at the Start

バイオセラミックス系材料は優れた生体親和性や硬組織誘導能を示すことから、覆髄材や逆根管充填材として使用されている。しかし、その課題の一つは、pH上昇によってある程度の抗菌性を発揮するが、象牙細管内に侵入した細菌を駆除できるほどの高い抗菌性を備えていないということである。本研究では、抗菌成分である亜鉛を含有するガラスと、ストロンチウムとリチウムイオンを徐放して硬組織形成を誘導するガラスを試作し、2種のガラス粒子を組み合わせて適用することで、細菌感染と硬組織形成を共に制御するイオン徐放用キャリアの創製を目指す。

Outline of Final Research Achievements

To establish a new technology to exhibit both antibacterial effects and hard tissue regeneration properties, we fabricated novel glasses containing zinc or strontium/lithium. Their solubility, ion-release property, and effects on cell and bacteria were evaluated. The zinc-containing glass, which was designed to be quickly dissolved, could release high concentration of zinc for a short period of time and exhibit the bactericidal effect against bacteria in dentinal tubules. The strontium-containing glass, which was designed to be slowly dissolved, could release strontium for a long term and demonstrate the effect to promote osteogenic differentiation.

Academic Significance and Societal Importance of the Research Achievements

バイオセラミックスは、優れた生体親和性に加え、硬組織誘導能を示すことから、覆髄材や逆根管充填材として使用されている。しかし、pH上昇によってある程度の抗菌性を発揮するバイオセラミックスは、象牙細管内に侵入した細菌を駆除できるほどの高い抗菌性を有していない。また、抗菌成分の溶出は、硬組織形成を促す細胞に対してネガティブな作用に繋がるため、抗菌効果と硬組織誘導能という相容れない作用を共に発現させる技術は見出されていない。本研究により確立した、抗菌効果と硬組織形成作用を段階的に発現する技術を応用することで、歯質での細菌感染を制御しつつ、良好な硬組織の治癒を誘導する歯科材料の開発に期待できる。

Report

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

    (9 results)

All 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Incorporation of chlorhexidine in self-adhesive resin cements2022

    • Author(s)
      MEHDAWI Idris M.、KITAGAWA Ranna、KITAGAWA Haruaki、YAMAGUCHI Satoshi、HIROSE Nanako、KOHNO Tomoki、IMAZATO Satoshi
    • Journal Title

      Dental Materials Journal

      Volume: 41 Issue: 5 Pages: 675-681

    • DOI

      10.4012/dmj.2022-004

    • ISSN
      0287-4547, 1881-1361
    • Year and Date
      2022-09-25
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fabrication of pH-Responsive Zn2+-Releasing Glass Particles for Smart Antibacterial Restoratives2022

    • Author(s)
      Deng Fan、Sakai Hirohiko、Kitagawa Haruaki、Kohno Tomoki、Thongthai Pasiree、Liu Yuhan、Kitagawa Ranna、Abe Gabriela L.、Sasaki Jun-ichi、Imazato Satoshi
    • Journal Title

      Molecules

      Volume: 27 Issue: 21 Pages: 7202-7202

    • DOI

      10.3390/molecules27217202

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Antibacterial effects and physical properties of a glass ionomer cement containing BioUnion filler with acidity-induced ability to release zinc ion2021

    • Author(s)
      Liu YH、Kohno T、Tsuboi R、Thongthai P、Deng F、Sakai H、Kitagawa H、Imazato S
    • Journal Title

      Dental Materials Journal

      Volume: 40 Issue: 6 Pages: 1418-1427

    • DOI

      10.4012/dmj.2021-052

    • NAID

      130008123562

    • ISSN
      0287-4547, 1881-1361
    • Year and Date
      2021-11-25
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of endodontic sealers containing antimicrobial-loaded polymer particles with long-term antibacterial effects2021

    • Author(s)
      Kitagawa H、Kitagawa R、Tsuboi R、Hirose N、Thongthai P、Sakai H、Ueda M、Ono S、Sasaki JI、Ooya T、Imazato S
    • Journal Title

      Dental Materials

      Volume: 37 Issue: 8 Pages: 1248-1259

    • DOI

      10.1016/j.dental.2021.04.008

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Immobilizing bactericides on dental resins via electron beam irradiation2021

    • Author(s)
      Thongthai P、Kitagawa H、Iwasaki Y、Noree S、Kitagawa R、Imazato S
    • Journal Title

      Journal of Dental Research

      Volume: 100 Issue: 10 Pages: 1055-1062

    • DOI

      10.1177/00220345211026569

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Acidity-induced release of zinc ion from BioUnion<sup>TM</sup> filler and its inhibitory effects against <i>Streptococcus mutans </i>2020

    • Author(s)
      Liu Y、Kohno T、Tsuboi R、Kitagawa H、Imazato S
    • Journal Title

      Dental Materials Journal

      Volume: 39 Issue: 4 Pages: 547-553

    • DOI

      10.4012/dmj.2019-061

    • NAID

      130007884194

    • ISSN
      0287-4547, 1881-1361
    • Year and Date
      2020-07-30
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cytotoxicity of S-PRG fillers: direct exposure of fillers and eluate from the fillers to RAW264 cells2020

    • Author(s)
      Hashimoto M, Kitagawa H, Takahashi Y, Hayashi M, Imazato S
    • Journal Title

      Nano Biomedicine

      Volume: 12 Pages: 3-10

    • NAID

      130007885580

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Fabrication of pH-responsive Zn-releasing glass particles for smart antibacterial restoratives2022

    • Author(s)
      Deng F, Sakai H, Kitagawa H, Kohno T, Tsuboi R, Thongthai P, Liu YH, Imazato S
    • Organizer
      2022 International Association for Dental Research General Session & Exhibition
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of anti-biofilm effects of bio-active GIC using a bioreactor.2020

    • Author(s)
      Kohno T, Liu YH, Deng F, Tsuboi R, Kitagawa H, Imazato S.
    • Organizer
      第68回国際歯科研究学会日本部会学術大会
    • Related Report
      2020 Research-status Report

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

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