Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives

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著者

    • OYAMA Koji
    • Department of Operative Dentistry, Nihon University School of Dentistry
    • OTSUKA Eiichiro
    • Department of Operative Dentistry, Nihon University School of Dentistry
    • SHIMIZU Yusuke
    • Department of Operative Dentistry, Nihon University School of Dentistry
    • SHIRATSUCHI Koji
    • Department of Operative Dentistry, Nihon University School of Dentistry
    • TSUBOTA Keishi
    • Department of Operative Dentistry, Nihon University School of Dentistry
    • MIYAZAKI Masashi
    • Department of Operative Dentistry, Nihon University School of Dentistry

抄録

We compared the surface free energies and enamel bond strengths of single-step self-etch adhesives with and without an oxygen-inhibited layer. The adhesives were applied to the enamel surfaces of bovine incisors, light irradiated, and the oxygen-inhibited layer was either retained or removed with ethanol. The surface free energies and their components (γ<Sub>S</Sub><Sup>LW</Sup>, γ<Sub>S</Sub><Sup>+</Sup>, and γ<Sub>S</Sub><Sup>−</Sup>) were determined by measuring the contact angles of three test liquids placed on the cured adhesives. The enamel bond strengths of specimens with and without the oxygen-inhibited layer were measured. For all surfaces, the value of the estimated surface tension component γ<Sub>S</Sub><Sup>LW</Sup> was relatively constant. The value of the γ<Sub>S</Sub><Sup>+</Sup> component increased slightly when the oxygen-inhibited layer was removed, whereas that of the γ<Sub>S</Sub><Sup>−</Sup> component decreased significantly. The enamel bond strengths of the self-etch adhesives were significantly lower in the specimens without an oxygen-inhibited layer. The oxygen-inhibited layer therefore appeared to promote higher enamel bond strength.

収録刊行物

  • Dental materials journal

    Dental materials journal 31(1), 26-31, 2012-01-01

    The Japanese Society for Dental Materials and Devices

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各種コード

  • NII論文ID(NAID)
    10030128058
  • NII書誌ID(NCID)
    AA10443149
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    02874547
  • データ提供元
    CJP書誌  J-STAGE 
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