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developmengt of novel peri-implantitis treatment using hydroxyl radical- effect of combination with ultraviolet irardiation and silver ions

Research Project

Project/Area Number 18K17135
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionTohoku University

Principal Investigator

Ishiyama Kirika  東北大学, 歯学研究科, 助教 (20712904)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsインプラント周囲炎 / 殺菌 / 水酸化ラジカル / 銀イオン / 再オステオインテグレーション / 長波長紫外線 / 再オッセオインテグレーション / 紫外線
Outline of Final Research Achievements

This study investigated the bactericidal effect, the underlying mechanisms of treatment, and recovery of biocompatibility of the infected titanium surface using a combination treatment of silver ion application and ultraviolet-A (UV-A) light irradiation. The bactericidal effect of the combination treatment was significantly higher than that of silver ion application or UV-A light irradiation alone. The bactericidal effect of the combination treatment was attributable to hydroxyl radicals. Furthermore, the titanium surface that underwent the combination treatment exhibited recovery of biocompatibility by allowing cellular proliferation or calcification at levels observed in the non-infected titanium surfaces and the removal torque was also comparable to the control values. From these results, this approach is a novel treatment option for peri-implantitis.

Academic Significance and Societal Importance of the Research Achievements

歯科インプラント周囲炎の罹患率は世界的にも増加している一方で、いまだ有効な治療方法は確立していないため、その治療方法の確立が課題となっている。汚染したチタン表面の殺菌効果だけでなく、細胞侵襲性が低いこと、その後の細胞親和性が向上したことから、水酸化ラジカルを応用した殺菌療法はインプラント周囲炎に有効な治療方法となることを示唆した。インプラント治療は口腔内でだけでなく、膝や股関節などの整形領域でも広く行われている治療であり、生体侵襲性の低い水酸化ラジカルを応用した本治療方法の応用範囲は広いと思われる。

Report

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

    (2 results)

All 2020 Other

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

  • [Int'l Joint Research] University of Duisburg-Essen(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Bactericidal activity and recovery effect of hydroxyl radicals generated by ultraviolet irradiation and silver ion application on an infected titanium surface2020

    • Author(s)
      Tenkumo T, Ishiyama K, Prymak O, Nakamura K, Shirato M, Ogawa T, Miyashita M, Takahashi M, Epple M, Kanno T, Sasaki K.
    • Journal Title

      scientific reports

      Volume: 10 Issue: 1 Pages: 8553-8553

    • DOI

      10.1038/s41598-020-65411-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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