デジタル画像相関法を用いた光重合型コンポジットレジンの収縮変位場評価 Evaluation of Shrinkage Displacement Fields in Light Cure Composite Resin by Digital Image Correlation Method

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A digital image correlation method was applied to study the polymerization shrinkage of a light cure resin composite in cavities of bovine teeth. A cylindrical cavity prepared using a bonding agent was employed to measure the shrinkage behavior on the top free surface of the cavity. A semi-cylindrical cavity was also used to simulate the cross section of the cylindrical cavity. The resin filled in the cavity was irradiated using a visible-light curing unit and photographed with a CCD camera as a function of time. The cavities prepared without the bonding agent were employed to study the bonding strength at the interface between the resin and tooth substrate, and the following results were obtained. The shrinkage behavior was largely different in the cavities prepared with and without the bonding agent. With the bonding agent, the displacement distribution was continuous at the interface, and its absolute value exhibited the maximum in the resin close to the interface and the minimum near the center of the cavity. Without the bonding agent, there existed the interface which exhibited the discontinuous distribution, and the discontinuity tended to initiate and grow locally at the interface.

収録刊行物

  • 実験力学 : journal of JSEM  

    実験力学 : journal of JSEM 8(2), 115-120, 2008-06-25 

    The Japanese Society for Experimental Mechanics

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各種コード

  • NII論文ID(NAID)
    10021155775
  • NII書誌ID(NCID)
    AA11822914
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13464930
  • NDL 記事登録ID
    9568768
  • NDL 雑誌分類
    ZM17(科学技術--科学技術一般--力学・応用力学)
  • NDL 請求記号
    Z74-C355
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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