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Development of dual-function polymer with the ability to exhibit long-lasting antibacterial effects

Research Project

Project/Area Number 16K15800
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Prosthodontics/ Dental materials science and
Research InstitutionOsaka University

Principal Investigator

Imazato Satoshi  大阪大学, 歯学研究科, 教授 (80243244)

Co-Investigator(Kenkyū-buntansha) 岩崎 泰彦  関西大学, 化学生命工学部, 教授 (90280990)
北川 晴朗  大阪大学, 歯学研究科, 助教 (50736246)
北川 蘭奈  大阪大学, 歯学部附属病院, 医員 (70711068)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords歯学 / 歯科材料 / レジン / ポリマー / 抗菌性 / タンパク / 生体材料
Outline of Final Research Achievements

In this study, five experimental surface coatings composed of copolymers of MDPB and MPC at different ratios were fabricated. Each coat was applied to the resin surface, and the protein repellent properties, antibacterial effects against Streptococcus mutans, and inhibitory effects of biofilm formation were evaluated. The copolymer composed of 15 (wt)% MDPB and 15(wt)% MPC inhibited protein adsorption and exhibited bactericidal effects on its surface, indicating that this composition was effective to achieve contact inhibition of bacteria in the presence of saliva.

Academic Significance and Societal Importance of the Research Achievements

口腔領域の疾患の多くは口腔内に棲息するさまざまな細菌の感染に起因しているが、義歯や充填材等の修復材料に用いられているレジン系材料は、元来、口腔細菌に対する抑制作用を示さないため、その表面への細菌付着とバイオフィルム形成による二次的疾患や材料の劣化が引き起こされることが問題となっている。本研究により、MDPB/MPC二元系ポリマーによって実際の口腔内のような唾液タンパクの存在下でも接触型の抗菌効果を発現できる技術を開発できたことで、薬剤の溶出に依存せずに細菌の付着を抑制できるさまざまな歯科材料の実用化が可能となると期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report

Research Products

(17 results)

All 2019 2018 2017 2016 Other

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (11 results) (of which Int'l Joint Research: 9 results,  Invited: 7 results) Remarks (1 results)

  • [Journal Article] Antibacterial activity and dentin bonding ability of combined use of Clearfil SE Protect and sodium hypochlorite2018

    • Author(s)
      Muratovska I, Kitagawa H, Hirose N, Kitagawa R, Imazato S
    • Journal Title

      Dent. Mater. J.

      Volume: 37 Issue: 3 Pages: 460-464

    • DOI

      10.4012/dmj.2017-294

    • NAID

      130007394725

    • ISSN
      0287-4547, 1881-1361
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improving the durability of resin-dentin bonds with an antibacterial monomer MDPB2018

    • Author(s)
      Hashimoto M, Hirose N, Kitagawa H, Yamaguchi S, Imazato S.
    • Journal Title

      Dent. Mater. J.

      Volume: 37 Issue: 4 Pages: 620-627

    • DOI

      10.4012/dmj.2017-209

    • NAID

      130007421019

    • ISSN
      0287-4547, 1881-1361
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibitory effect of resin composite containing S-PRG filler on Streptococcus mutans glucose metabolism2018

    • Author(s)
      Kitagawa Haruaki、Miki-Oka Saeki、Mayanagi Gen、Abiko Yuki、Takahashi Nobuhiro、Imazato Satoshi
    • Journal Title

      Journal of Dentistry

      Volume: 70 Pages: 92-96

    • DOI

      10.1016/j.jdent.2017.12.017

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] SiO<sub>2</sub>-nanocomposite film coating of CAD/CAM composite resin blocks improves surface hardness and reduces susceptibility to bacterial adhesion2017

    • Author(s)
      Kamonwanon P, Hirose N, Yamaguchi S, Sasaki JI, Kitagawa H, Kitagawa R, Thaweboon S, Srikhirin T, Imazato S.
    • Journal Title

      Dent. Mater. J.

      Volume: 36 Issue: 1 Pages: 88-94

    • DOI

      10.4012/dmj.2016-135

    • NAID

      130005308588

    • ISSN
      0287-4547, 1881-1361
    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 抗菌性を発揮する”バイオアクティブ”な修復材・コーティング材を用いたう蝕の予防とマネージメント.2016

    • Author(s)
      今里 聡
    • Journal Title

      小児歯科臨床

      Volume: 21 Pages: 29-33

    • Related Report
      2016 Research-status Report
  • [Presentation] Approaches to achieve next generation restorative materials with “bio-active” functions.2019

    • Author(s)
      Imazato S.
    • Organizer
      Turkish-Japanese Dental Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] New generation restorative materials with “bio-active” functions.2018

    • Author(s)
      Imazato S.
    • Organizer
      2018 Seoul National University International Conference for Future Dentistry
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Approaches to achieve next generation restorative materials with “bio-active” functions.2018

    • Author(s)
      Imazato S.
    • Organizer
      The 37th Annual Academic Session of the Korean Division of the IADR
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Anti-biofilm effects of dual-functional coating composed of MDPB and MPC.2018

    • Author(s)
      Thongthai P, Kitagawa H, Kitagawa R, Hirose N, Iwasaki Y, Imazato S
    • Organizer
      96th General Session of the IADR
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel surface coating composed of MDPB and MPC with antibacterial effect and protein repellent ability.2018

    • Author(s)
      Thongthai P, Kitagawa H, Kitagawa R, Hirose N, Iwasaki Y, Imazato S.
    • Organizer
      8th Japan-Thailand-Korea Joint Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Caries management and prevention by “bio-active” restorative/coating materials with antibacterial effects.2017

    • Author(s)
      Imazato S
    • Organizer
      89th Congress, Taiwan Academy of Pediatric Dentistry
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] “Bio-active bonding” by antibacterial adhesive -Essential strategy for treatment of caries2017

    • Author(s)
      Imazato S
    • Organizer
      The 7th Temu Ilmiah Nasional (TIMNAS) and The 4th Joint Scientific Meeting in Dentistry
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 各種市販MTA セメントの抗菌性および石灰化誘導能2017

    • Author(s)
      森田真吉,中山勝矢,山口 哲,北川晴朗,今里 聡
    • Organizer
      第69回日本歯科理工学会学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Antibacterial and protein-repellent surface coating composed of MDPB and MPC2017

    • Author(s)
      Thongthai P, Kitagawa H, Kitagawa R, Hirose N, Iwasaki Y, Imazato S
    • Organizer
      第65回国際歯科研究学会日本部会学術大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Antibacterial and bioactive dental restorative materials: Do they really work? “Incorporation of bacterial inhibitor in dental resins”2016

    • Author(s)
      Imazato S
    • Organizer
      94th General Session & Exhibition of the IADR
    • Place of Presentation
      Seoul (Korea)
    • Year and Date
      2016-06-24
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Caries management and prevention by “bio-active” restorative/coating materials with antibacterial effects.2016

    • Author(s)
      Imazato S
    • Organizer
      10th Biennial Conference of the Pediatric Dentistry Association of Asia
    • Place of Presentation
      東京ドームホテル(東京都文京区)
    • Year and Date
      2016-05-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 大阪大学大学院顎口腔機能再建学講座(歯科理工学教室)

    • URL

      http://web.dent.osaka-u.ac.jp/~techno/index.html

    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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