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Association of the onset of refractory periapical periodontitis with oral microbiota

Research Project

Project/Area Number 16K11548
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Conservative dentistry
Research InstitutionOsaka University

Principal Investigator

Yamaguchi Mikiyo  大阪大学, 歯学研究科, 特任研究員 (30523089)

Co-Investigator(Kenkyū-buntansha) 久保庭 雅恵  大阪大学, 歯学研究科, 准教授 (00303983)
恵比須 繁之  大阪大学, 歯学研究科, 招へい教授 (50116000)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsバイオフィルム / 難治性根尖性歯周炎 / 口腔内細菌叢 / シーケンス解析 / 根尖性歯周炎
Outline of Final Research Achievements

In this study, we conducted sequencing analysis and comprehensive identification of the microbiota of root canal, extraradicular biofilm, saliva and subgingival biofilm to investigate the composition of microbiota leading refractory apical periodontitis,
We showed that the distinctive composition of the microbiota was identified in apical periodontitis and refractory apical periodontitis.

Academic Significance and Societal Importance of the Research Achievements

根尖性歯周炎が難治化・慢性化する主な原因は、根管内および根尖孔外の細菌であり、根管内および根尖孔外バイオフィルムの細菌構成が根管治療の成否を決定する鍵になると考えられる。
根尖性歯周炎を難治化に導く細菌構成および根管内および根尖孔外バイオフィルムの細菌構成とそれぞれの患者の唾液および歯肉縁下バイオフィルムの細菌構成の相関性を調べることで、成功率が80%程度と報告されている根管治療の予知性を高める一助となると考えられる。本研究より、根尖性歯周炎を難治化に導く細菌構成が明らかとなった。

Report

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

    (3 results)

All 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results)

  • [Journal Article] Factors that cause endodontic failures in general practices in Japan.2018

    • Author(s)
      Yamaguchi M, Noiri Y, Itoh Y, Komichi S, Yagi K, Uemura R, Naruse H, Matsui S, Kuriki N, Hayashi M, Ebisu S
    • Journal Title

      BMC Oral Health.

      Volume: 18(1) Issue: 1 Pages: 70-70

    • DOI

      10.1186/s12903-018-0530-6

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Factors that cause endodontic failures in general practices in Japan2018

    • Author(s)
      Mikiyo Yamaguchi, Yuichiro Noiri, Yoshihiro Itoh, Sungo Komichi, Kyoko Yagi, Reo Uemura, Haruna Naruse, Saori Matsui, Nanako Kuriki, Mikako Hayashi and Shigeyuki Ebisu
    • Journal Title

      BMC Oral Health

      Volume: -

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Investigation on Effective Education Methods for Preparing Curved Root Canals with FKG RaCe2017

    • Author(s)
      山口幹代, 伊藤勇紀, 須崎尚子, 堅田千裕, 外園真規, 川西雄三, 増田晃一, 伊藤善博, 米田直道, 岡本基岐, 朝日陽子, 山田朋美, 伊藤祥作, 林 美加子
    • Journal Title

      The Japanese Journal of Conservative Dentistry

      Volume: 60 Issue: 5 Pages: 255-261

    • DOI

      10.11471/shikahozon.60.255

    • NAID

      130006191148

    • ISSN
      0387-2343, 2188-0808
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access

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

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