Effect of Phosphoric Acid Etching on Dentin for Adhesion

DOI 2 Citations 28 References
  • TOIDA Tetsuya
    Division of Organic Materials, Institute for Medical and Dental Engineering, Tokyo Medical and Dental University
  • NAKABAYASHI Nobuo
    Division of Organic Materials, Institute for Medical and Dental Engineering, Tokyo Medical and Dental University

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  • リン酸エッチングが象牙質被着面に与える影響

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Acids sometimes modify the collagen in the demineralized dentin which collapses easily during the drying process. The collapsed dentin does not permit monomer impregnation which makes preparation of hybridized dentin difficult. SEM examinations of the prepared dentin which has been protected with a protective varnish and the newly formed hybridized dentin after soaking bonded specimens in HCl and then in NaOCl give information on the bonding of resin to dentin, that is, the creation of hybridized dentin. It was concluded that the shrinking of the deminearlized dentin depends on the etching period, concentration and dissociation constant of the applied phosphoric acid.

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