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Direct Observation of Fracture process in bond system between all-ceramic restorations and adhesive resin cements

Research Project

Project/Area Number 18592155
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionAsahi University

Principal Investigator

WAKAMATSU Nobukazu  Asahi University, Dept. Dental materials Science, Assistant Prof. (00158594)

Co-Investigator(Kenkyū-buntansha) KAMEMIZU Hideo  Asahi University, Dept. of Dental Materials Science, Lecturer (00152877)
IIJIMA Mayumi  Asahi University, Dept. of Dental Materials Science, Assistant Prof. (80164838)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥2,850,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2006: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsAll-ceramic restoration / Adhesive resin cement / Adhesion / Fracture process / CAD / CAM / Grinding / Damages / 研削加工 / 歯科材料 / セラミックス
Research Abstract

In IPS Empress 2 all-ceramic system, the restorations are fabricated by veneering porcelain on the copings hot-pressed, however, the effects of multiple firing for veneering on the bond strength between IPS Empress 2 core ceramics and a adhesive resin cement are not clarified. In this study, the micro-tensile bond strength between the core ceramics and a resin cement was evaluated. From the statistical analysis, the mean bond strength was not significantly different for unheated (41.5 Mpa) and for heated four times (39.1 Mpa). It was also found that the multiple firing for veneering significantly influenced the Weibull plots of the bond strength. It is thought that the all-ceramic crowns machined under brittle-mode grinding contain various subsurface cracks, and these cracks decrease the strength the crowns. However, the kind, the size and the location of the cracks actually occur in the crowns machined by CAD/CAM systems are not clarified. In this study, evaluation of the subsurface damages in CAD/CAM machined all-ceramic crowns were carried out using the bonded-interface sectioning technique. From the SEM observation, it is concluded that Median and Lateral cracks were generated by grinding at the ridge, the margin, the axial wall and the inner surface of the crowns, and these cracks can be the fracture origin of the crown under cyclic occlusal loadings.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (24 results)

All 2008 2007 2006

All Journal Article (11 results) (of which Peer Reviewed: 6 results) Presentation (13 results)

  • [Journal Article] Effect of acid etching treatments on the flexural strength of IPS Epmress 2 core ceramics2008

    • Author(s)
      HATA U.
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Influence of multipul firing on the micro-tensile bond strength between IPS Empress2 core ceramics and a adhesive resin cement2008

    • Author(s)
      HATA U.
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Direct observation of subsurface damages in all-ceramic crowns Fabricated by a CAD/CAM system2008

    • Author(s)
      NONOGAKI R
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Evaluation of residual stress in CAD/CAM machined all-ceramic Crowns using Indentation method2008

    • Author(s)
      NONOGAKI R
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Effect of acid etching treatments on the flexural strength of IPS Empress 2 core ceramics.2008

    • Author(s)
      HATA U, WAKAMATSU N, YAMAMURA O, DOI Y, FUJIWARA S.
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Influence of multiple firing on the micro-tensile bond strength between IPS Empress 2 core material and a adhesive resin cement.2008

    • Author(s)
      HATA U, WAKAMATSU N. YAMAMURA O. DOI Y, FUJIWARA S.
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Direct observation of subsurface damages in all-ceramic crowns Fabricated by a CAD/CAM system.2008

    • Author(s)
      NONOGAKI R, UNO M, KURACHI M, WAKAMATSU N, DOI Y.
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Evaluation of residual stress in CAD/CAM machined all-ceramic crowns using Indentation method.2008

    • Author(s)
      NONOGAKI R, UNO M, KURACHI M, WAKAMATSU N, DOI Y.
    • Journal Title

      Dental Materials Journal 27(in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Direct observation of subsurface damages in all-ceramic crowns fabricated by a CAD/CAM system.2008

    • Author(s)
      Wakamatsu N
    • Journal Title

      Dental Materials Journal 27(in press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of residual stress in Cad/CAM machined all-ceramic crowns using indentation method.2008

    • Author(s)
      Wakamatsu N
    • Journal Title

      Dental Materials Journal 27(in press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of multiple firing on the microtensile bond strength between Empree 2 core ceramics and a resin cement system2007

    • Author(s)
      Wakamatsu N
    • Journal Title

      Dental Materials Journal 26(in press)

    • Related Report
      2006 Annual Research Report
  • [Presentation] CAD/CAMにより研削加工された歯科用セラミックスの曲げ強さに与えるグレージングの影響2008

    • Author(s)
      野々垣 龍吾
    • Organizer
      第51回日本歯科理工学会学術講演会
    • Place of Presentation
      鶴見大学(横浜市)
    • Year and Date
      2008-04-26
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Effect of grazing on the flexural strength of dental ceramics machined by a CAD/CAM system.2008

    • Author(s)
      NONOGAKI R, UNO M, KURACHI M, WAKAMATSU N, DOI Y.
    • Organizer
      51th General Session of the Japanese Society for Dental Materials and Devices
    • Place of Presentation
      Tsurumi University
    • Year and Date
      2008-04-26
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Evaluation of subsurface damages in all-ceramic crowns fabricated by A CAD/CAM system2007

    • Author(s)
      NONOGAKI R.
    • Organizer
      第50回日本歯科理工学会学術講演会ならびに国際歯科材料会議2007
    • Place of Presentation
      バンコク(タイ)
    • Year and Date
      2007-11-24
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Evaluation of subsurface damages in all-ceramic crowns fabricated a CAD/CAM system.2007

    • Author(s)
      NONOGAKI R, UNO M, KURACHI M, WAKAMATSU N, DOI Y.
    • Organizer
      International Dental Materials Congress 2007(IDMC 2007) in Bangkok
    • Place of Presentation
      The Imperial Queen's Park Hotel
    • Year and Date
      2007-11-24
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Evaluation of subsurface damages in all-ceramic crowns fabricated by a CAD/CAM system.2007

    • Author(s)
      Nonogaki R
    • Organizer
      国際歯科材料会議2007
    • Place of Presentation
      バンコク(タイ)
    • Year and Date
      2007-11-24
    • Related Report
      2007 Annual Research Report
  • [Presentation] IPS Empress2コア材の繰り返し焼成が接着強さに与える影響2007

    • Author(s)
      羽田 詩子
    • Organizer
      第49回日本歯科理工学会学術講演会
    • Place of Presentation
      札幌コンベンションセンター(札幌市)
    • Year and Date
      2007-05-12
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] CAD/CAMにより製作されたオールセラミッククラウンの残留応力の評価2007

    • Author(s)
      野々垣 龍吾
    • Organizer
      第49回日本歯科理工学会学術講演会
    • Place of Presentation
      札幌コンベンションセンター(札幌市)
    • Year and Date
      2007-05-12
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Effect of multiple firing of IPS Empress 2 core material on the bond strength to a adhesive resin cement.2007

    • Author(s)
      HATA U, WAKAMATSU N, YAMAMURA O, DOI Y, FUJIWARA S.
    • Organizer
      49th General Session of the Japanese Society for Dental Materials and Devices
    • Place of Presentation
      Sapporo Convention Center
    • Year and Date
      2007-05-12
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Evaluation of residual stress in CAD/CAM machined all-ceramic crowns usine Indentation method.2007

    • Author(s)
      NONOGAKI R, UNO M, KURACHI M, WAKAMATSU N, DOI Y.
    • Organizer
      49th General Session of the Japanese Society for Dental Materials and Devices
    • Place of Presentation
      Sapporo Convention Center
    • Year and Date
      2007-05-12
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] CAD/CAMにより製作されたオールセラミッククラウンの損傷評価2006

    • Author(s)
      野々垣 龍吾
    • Organizer
      第48回日本歯科理工学会学術講演会
    • Place of Presentation
      愛知学院大学(名古屋市)
    • Year and Date
      2006-10-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Evaluation of damages in all-ceramic crowns fabricated by a CAD/CAM system.2006

    • Author(s)
      NONOGAKI R, UNO M, KURACHI M, WAKAMATSU N, DOI Y.
    • Organizer
      48th General Session of the Japanese Society for Dental Materials and Devices
    • Place of Presentation
      Aichi Gakuin University
    • Year and Date
      2006-10-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 繰り返し焼成がIPS Empress2 コア材の表面性状と微構造に与える影響2006

    • Author(s)
      羽田 詩子
    • Organizer
      第115回日本補綴歯科学会学術大会
    • Place of Presentation
      札幌コンベンションセンター(札幌市)
    • Year and Date
      2006-07-09
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Influence of multiple firing on surface texture and microstructure of IPS Empress 2 core ceramics.2006

    • Author(s)
      HATA U, WAKAMATSU N, YAMAMURA O, DOI Y, FUJIWARA S.
    • Organizer
      The 115th Scientific Meeting of Japan Prosthodontic Society
    • Place of Presentation
      Sapporo Cenvention Center
    • Year and Date
      2006-07-09
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2006-04-01   Modified: 2016-04-21  

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