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Development of the composite resin with less amount of the shrinkage

Research Project

Project/Area Number 04807139
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 補綴理工系歯学
Research InstitutionNihon University

Principal Investigator

NEMOTO Kimiya  Nihon University, School, Professor of Dentistry at Matsudo, 松戸歯学部, 教授 (00050039)

Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1993: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1992: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsComposite resin / Shrinkage / Volumetric shrinkage / Linear shrinkage / Curing rate / Filler / Filler content / Shrinkage stress / 収縮 / 線収縮率 / 硬化速度 / 超微粒子シリカ / 重合開始剤 / フィラー体積率 / 表面形状
Research Abstract

In order to obtain information concerning which parameters control the shrinkage of the experimental filled resin during hardening, the volumetric shrinkage and the linear shrinkage of the experimental filled resin were investigated. The correlation between the shrinkage stress and these datas was discussed.
The volumetric shrinkage of the filled resin is dependent on the filler content. Contrary, the linear shrinkage is not 1/3 of the volumetric shrinkage even if the filler content was increased. However, when the length become shorter less than 5 mm, the linear shrinkage become larger and it's value become above 3 times, and approximates to 1/3 of the volumetric shrinkage. The magnitude of the linear shrinkage is different by the size and type of the cavity.
The shrinkage stress of the filled resin become larger until the filler content is 60 % even if the volumetric shrinkage become smaller. The volumetric shrinkage of the synthesized di-methacrylate monomer which the cyclopolimerization is possible is pretty similar to that of commercial dimethacrylate monomers.
Next, the effect of the lining cement on the shrinkage stress of the filled resin was investigated. The shrinkage stress become 1/2 of that obtained without a lining cement. The application of the lining cement, 0.5-1.5mm reduces the shrinkage stress.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 池見宅司.他: "コンポジットレジンの重合収縮応力の測定-化学重合と光重合型コンポジットレジンにおける裏層材の影響-" 日本歯科保存学雑誌. 36巻. 800-806 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 神谷直孝.他: "裏層材の収縮応力" 日本歯科保存学雑誌. 36巻. 1641-1648 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takuji IKEMI: "Measurement of Shrinking Stresses during Composite Resin Hardening -Lining Effects of Chemical and Light Cured Composite Resins-" Japanese Journal of Conservative Dentistry. 800-806 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Naotaka KAMIYA: "Shrinking Stress of Lining Materials" Japanese Journal of Conservative Dentistry. 1641-1648 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 池見宅司 他: "コンポジットレジンの重合収縮応力の測定-化学重合と光重合型コンポジットレジンにおける裏層材の影響-" 日本歯科保存学雑誌. 36巻. 800-806 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 神谷直孝 他: "裏層材の収縮応力" 日本歯科保存学雑誌. 36巻. 1641-1648 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小松 光一,西山 典宏, 根本 君也,上原 信録, 堀江 港三: "コンポジットレジンの重合収縮 第1報 線収縮測定装置の試作" 歯科材料・器械. 11. 692-696 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 根本 君也,小松 光一,西山 典宏 堀江 港三,長嶋 正博, 池見 宅司,並木 勇次: "コンポジットレジンの重合収縮 第2報 試験体の長さが線収縮におよぼす影響" 歯科材料・器械. 11. 985-991 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 根本 君也,小松 光一,堀江 港三 ラファエル ボウエン,友常 健一, 池見 宅司,並木 勇次: "コンポジットレジンの収縮応力 第2報 フィラーの組成が収縮応力におよぼす影響" 歯科材料・器械. 11. 992-998 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 根本 君也,小松 光一,堀江 港三 ラファエル ボウエン,谷岡 泰弘,池見 宅司,並木 勇次: "コンポジットレジンの収縮応力 第3報 重合開始剤量が収縮応力におよぼす影響" 歯科材料・器械. 12. 1-7 (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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