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A study on metal-free abutment construction for fixed prosthodontic restorations

Research Project

Project/Area Number 16K11587
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Prosthodontics/ Dental materials science and
Research InstitutionTokyo Medical and Dental University

Principal Investigator

KOMADA Wataru  東京医科歯科大学, 歯学部附属病院, 講師 (10447493)

Research Collaborator Kubo Mariko  
Ishikawa Yoko  
Sugano Kiriko  
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: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords冠橋義歯 / 支台築造 / メタルフリー / グラスファイバーポスト / グラスファイバーリボン / 漏斗状根管 / PEEK / 歯学 / メタルフリー修復
Outline of Final Research Achievements

This study evaluated the fracture strength and mode of failure of structurally compromised teeth with flared root canals restored using composite resin with four different systems for metal-free abutment construction for fixed prosthodontic restorations.Sixty endodontically treated bovine teeth were uniformly shaped to simulate human mandibular premolars with flared root canals. The roots were divided into four groups based on the type of restoration: composite resin core only (control), glass fiber post, cylindroid glass fiber ribbons, and glass fiber post and ribbons.
The fiber post and ribbon group and the fiber ribbon group showed significantly higher fracture strength than the controls. The fiber post and ribbon group also showed significantly higher fracture strength than the fiber post group. Cylindroid glass fiber ribbons significantly increased the fracture strength of the composite resin post and cores. This study recommends the combined use of fiber post and ribbons.

Academic Significance and Societal Importance of the Research Achievements

グラスファイバーポストを使用したコンポジットレジン支台築造が我が国の保険診療に導入され、金属不使用の歯科治療の普及が加速度的に普及しつつある.ブリッジにより欠損補綴を行う場合,支台歯はクラウンの場合より強度が求められる.本実験結果からグラスファイバーポストに加えファイバーリボンを利用する事でコンポジットレジン支台築造の強度を向上させることが明らかになった.これは今後のメタルフリー歯科治療の発展に寄与する事が想定される.

Report

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

    (5 results)

All 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] The effect of glass fiber posts and ribbons on the fracture strength of teeth with flared root canals restored using composite resin post and cores2018

    • Author(s)
      Kubo M, Komada W, Otake S, Inagaki T, Omori S, Miura H
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 62 Issue: 1 Pages: 97-103

    • DOI

      10.1016/j.jpor.2017.07.002

    • NAID

      130006619329

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] The effects of post and core material combination on the surface strain of the 4-unit zirconia fixed partial denture margins2017

    • Author(s)
      Ishikawa Y, Komada W, Inagaki T, Nemoto R, Omori S, Miura H
    • Journal Title

      Dental Materials Journal

      Volume: 36 Issue: 6 Pages: 798-808

    • DOI

      10.4012/dmj.2016-343

    • NAID

      130006224948

    • ISSN
      0287-4547, 1881-1361
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The effects of post and core material combination on the surface strain of the 4-unit zirconia fixed partial denture margins2017

    • Author(s)
      Yoko ISHIKAWA, Wataru KOMADA, Tasuku INAGAKI, Reina NEMOTO,Satoshi OMORI and Hiroyuki MIURA
    • Journal Title

      Dental Materials Journal

      Volume: 印刷中

    • NAID

      130006224948

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] The fracture strength of PEEK (Poly Ether Ether Ketone) posts and composite resin cores in the case of flared root canals.2018

    • Author(s)
      Sugano K, Komada W, Okada D, Miura H
    • Organizer
      The 66th Annual Meeting of Japan Association for Dental Research
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 各種グラスファイバーポストの引き抜き強さの検討2016

    • Author(s)
      駒田 亘,大竹 志保,根本 怜奈,吉田 惠一,三浦 宏之
    • Organizer
      第27回日本歯科審美学会学術大会
    • Place of Presentation
      京王プラザホテル札幌(北海道.札幌)
    • Year and Date
      2016-08-27
    • Related Report
      2016 Research-status Report

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

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