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Surface modification of orthodontic stainless steel with bioactive glass

Research Project

Project/Area Number 17H07048
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Orthodontics/Pediatric dentistry
Research InstitutionHealth Sciences University of Hokkaido

Principal Investigator

KAWAGUCHI Kyotaro  北海道医療大学, 歯学部, 助教 (70803641)

Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords歯科矯正用材料 / バイオアクティブガラス / EPD / 矯正用ワイヤー / 生体活性 / 再石灰化 / 生体活性ガラス / 矯正 / 生体材料 / EPD法 / 表面改質 / BAG / 歯科理工学 / 生体材料学
Outline of Final Research Achievements

Thin BG coating layers with a milky-white appearance were formed on stainless steel. Quantitative color measurements showed that the EPD process using higher voltage (15 V) produced higher values for the reflectance and L*. The surfaces of BG coated specimens were significantly rougher than the non-coated specimens. The surfaces of BG coated specimens coated at higher voltage (15 V) showed significantly lower roughness than those coated at lower voltage (10 V). The hardness and elastic modulus of the BG layers were significantly lower than those of the non-coated specimens. For three-point bending test, the elastic modulus decreased 6.9‐12.0% by the EPD process compared with non-coated wires. BG-coated wires deposited under 10V showed significantly greater static frictional force than non-coated wire, although BG-coated wires deposited under 15V showed similar static friction force compared to the non-coated wire.

Academic Significance and Societal Importance of the Research Achievements

バイオアクティブガラスとEPD法を用いたコーティング技術により、歯科矯正用ステンレススチール材料を表面改質できることが明らかになった。表面改質により材料の表面粗さの増大や機械的強度の低下が懸念される一方、材料の審美性は高まり、矯正治療中のブラケット周囲う蝕の予防効果が期待できる可能性が示唆された。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (3 results)

All 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Electrophoretic Deposition as A New Bioactive Glass Coating Process for Orthodontic Stainless Steel2017

    • Author(s)
      Kyotaro Kawaguchi, Masahiro Iijima, Kazuhiko Endo, Itaru Mizoguchi
    • Journal Title

      coatings

      Volume: 7, 199 Issue: 11 Pages: 199-199

    • DOI

      10.3390/coatings7110199

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Esthetic, Mechanical and Frictional Properties of Bioactive Glass-coated Orthodontic Wire2018

    • Author(s)
      KYOTARO KAWAGUCHI
    • Organizer
      the 2018 IADR/PER General Session & Exhibition
    • Related Report
      2018 Annual Research Report
  • [Presentation] バイオアクティブガラスとEPD法を用いた矯正用ワイヤーの審美性表面改質2017

    • Author(s)
      河口馨太朗,飯嶋雅弘,遠藤一彦,六車武史,川村尚彦,石川里奈,溝口 到.
    • Organizer
      第76回日本矯正歯科学会学術大会
    • Related Report
      2017 Annual Research Report

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Published: 2017-08-25   Modified: 2020-03-30  

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