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Elucidation of tooth wear associated with developmental defects of enamel and establishment of a simple diagnostic method for CARS

Research Project

Project/Area Number 19K19259
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57070:Developmental dentistry-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Wada Kanae  東京医科歯科大学, 大学院医歯学総合研究科, 助教 (80586769)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsDevelopmental defects / 形成不全 / 摩耗 / エナメル質 / レプリカ評価法 / Tooth wear / 乳歯 / セルロースアセテートシート / エナメル質形成障害
Outline of Research at the Start

エナメル質形成障害(DDE)に関連する咬耗・摩耗・酸蝕などを特徴としたTooth wearは、発見の 遅れから重篤化することが多く、早期発見方法やメカニズムの解明は急務である。 本研究計画では、 (1)乳歯のDDEに起因するTooth wearを、衝撃滑走試験を用いて再現し、咬耗・摩耗・酸蝕を同時に評価する。Tooth wear表面のナノレベルで観察し、Tooth wearの様相から原因を解明し、Tooth wearの修復法、予防処置の確立を目指す。 (2)DDEの臨床現場での早期発見を目指し、セルロースアセテートシート(CARS) を用いた口腔内での簡易的診断法の確立と臨床導入を目指す。

Outline of Final Research Achievements

The purpose of this research was to elucidate the wear behavior caused by Developmental Defects of Enamel (DDE) and to establish a simple oral diagnostic method using Cellulose Acetate Sheets (CARS). Reserch of studies showed that the enamel affected by DDE showed significantly more wear and crater-like defects than the group without DDE. Furthermore, the replica method using CARS was able to observe surface micro-cracks, wear scratches, craters, and grooves in a simple, nondestructive, easy, and safe manner. These results suggest that the CARS replica method can provide a new solution for early detection of DDE, repair of tooth wear caused severe by DDE, and preventive treatment.

Academic Significance and Societal Importance of the Research Achievements

本研究より、1.DDEに罹患したエナメル質のTooth wearのメカニズムを解明、2.DDEの臨床現場での早期発見法の確立を目的とした。これら意義にとどまらず、小児歯科の臨床現場において、DDEに関連する酸蝕・咬耗・摩耗などを特徴とした Tooth wearの発見の遅れから重篤化する症例の修復法、予防処置の可能性を示唆した。 また、CARSを用いた Tooth wearの簡易的な診断方法が確立されれば、臨床現場においてDDEに起因するTooth wearの早期発見と早期予防処置が広く普及し、DDEに罹患した小児の口腔機能の維持と永久歯列の正常な確立に繋がるものと大いに期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2021 2020

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results)

  • [Journal Article] Replica-based inspection of enamel wear microfeatures2020

    • Author(s)
      Ijbara Manhal、Wada Kanae、Wada Junichiro、Jayawardena Jayanetti Asiri、Miyashin Michiyo
    • Journal Title

      Bio-Medical Materials and Engineering

      Volume: 31 Issue: 5 Pages: 279-290

    • DOI

      10.3233/bme-206006

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Wear of 3D-printing resin materials against primary enamel: applicability to artificial tooth of removable space maintainers for child2021

    • Author(s)
      Yujeong Shin, Kanae Wada, Tsutomu Iwamoto
    • Organizer
      The 59th Anuual Conference of the Japanese Society of Pediatric Dentistry
    • Related Report
      2021 Annual Research Report
  • [Presentation] 乳歯に対合するCAD/CAM治療用3Dプリンター材の摩耗評価:審美乳歯冠と可撤保隙装置の製作.2021

    • Author(s)
      和田奏絵, Shin Yujeong, 中島結美子, 金井恵未, 内藤悠, 小樋香織, 岩本勉.
    • Organizer
      第59回日本小児歯科学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 乳歯に対合するCAD/CAM治療用 3Dプリンター材の摩耗評価 :審美乳歯冠と可撤保隙装置の製作2020

    • Author(s)
      和田奏絵,Shin Yujeong,中島結美子,金井恵未, 内藤悠,小樋香織,岩本勉
    • Organizer
      日本小児歯科学会第59回学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Wear of 3D-Printing Resin Materials Against Primary Enamel: Applicability to Artificial Tooth of Removable Space Maintainers for Child2020

    • Author(s)
      Shin Yujeong,和田奏絵,岩本勉
    • Organizer
      日本小児歯科学会第59回学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 小児歯科オンライン診療の試みとその評価.2020

    • Author(s)
      内藤 悠, 和田 奏絵, 島田 学, 大石 敦之, 上原 智己, 関矢 多希, 小樋 香織, 柿野 聡子, 松村 木綿子, 宮新 美智世.
    • Organizer
      第58回日本小児歯科学会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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