Effect of Various Pretreatment Solutions on Bonding of Photocurable Resin Composite to Tooth Substrates

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  • NIKAIDO Toru
    Department of Operative Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • HOSODA Hiroyasu
    Department of Operative Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • NAGATA Katsuhisa
    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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Other Title
  • 各種前処理剤が光重合型コンポジットレジンの歯質接着性に及ぼす影響

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Abstract

The bonding of photocurable resin composites to dentin and enamel treated with various pretreatment solutions was evaluated.The used solutions were 0.5mol/L EDTA disodium salt[EDTA5-0(Na)](pH7.4), 0.3mol/L EDTA disodium salt-0.2mol/L EDTA sodium iron salt(pH7.4)[EDTA3-2(Na/Fe)], 0.5mol/L EDTA diammonium salt[EDTA5-0(NH_4)](pH7.4), 0.3mol/L EDTA diammonium salt-0.2mol/L EDTA ammonium iron salt(pH7.4)[EDTA3-2(NH_4/Fe)], 10% citric acid(10-0), 10% citric acid-3% ferric chloride(10-3)and 65% phosphoric acid(H_3PO_4).The high bond strengths to dentin were obtained using EDTA3-2(Na/Fe), EDTA3-2(NH_4/Fe)and 10-3.H_3PO_4 pretreatment gave the highest bond strength to enamel.These findings support the fact that ferric irons in the pretreatment solutions markedly affected dentin bonding, while the amount of demineralized enamel with the pretreatment solutions directly influenced on enamel bonding.

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