Study on adhesion of dental cements using a primer with a phosphoryl group to zirconia ceramics

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  • IKOMA Sachie
    Department of Biomaterials and Devices, Kanagawa Dental College
  • KURATA Shigeaki
    Department of Biomaterials and Devices, Kanagawa Dental College
  • UMEMOTO Kozo
    Department of Biomaterials and Devices, Kanagawa Dental College

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Other Title
  • ジルコニア系セラミックスに対するリン酸基機能性モノマーをプライマーとして用いた歯科用セメントの接着強さ
  • ジルコニアケイ セラミックス ニ タイスル リンサンキ キノウセイ モノマー オ プライマー ト シテ モチイタ シカヨウ セメント ノ セッチャク ツヨサ

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To evaluate properties to bond to zirconia, four commercial resin cements, four resin-modified glass ionomer cements, conventional glass ionomer cement, and four primers were used. Furthermore, the relation between the compressive strength and tensile bond strength was examined. The tensile bond strength of one resin cement without a primer to the zirconia after 2,000 thermocycles was about 7.5MPa, while the metal tab came off from the zirconia surface during thermocycles when the other resin cements were used. The bond strength to zirconia treated with the four primers was improved, but became almost zero after 5,000 thermocycles. The bond strength of two resin-modified glass ionomer cements markedly decreased, but that of one resin-modified cements did not significantly change after 5,000 thermocycles. A correlation between the compressive strength and tensile bond strength of each cement was not identified.

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