Bonding of a one-step adhesive system to carious dentin with active application mode

DOI 33 References
  • ZHAO Xiaohua
    Department of Operative Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • YOSHIYAMA Masahiro
    Department of Operative Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences

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  • アクティブ処理を採用するワンステップ接着システムのう蝕象牙質への接着性

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Abstract

This study was carried out to investigate the effects of active vs. inactive application of one-step self-etching adhesives on bond strengths to carious dentin. Two one-step self-etching adhesive systems, One-Up Bond F Plus (OB-P, the adhesive was applied actively) and One-Up Bond F (OB, the adhesive was applied inactively), were employed. Human extracted molars with mild occlusal caries were stained with a caries detecting solution and ground perpendicularly to the long axis of the tooth to expose the flat dentin surfaces. The dentin surfaces were classified into sound dentin (SD), caries-affected dentin (CAD) and caries-infected dentin (CID) groups by the degree of staining. Each adhesive system was applied to the surfaces, and a composite resin was built up and polymerized. After immersion in water for24hours, a micro-tensile bond strength test was performed. The treated dentin surfaces and the resin-dentin interfaces with OB-P or OB were observed by SEM. The bond strengths of OB-P for each dentin type were significantly higher than those of OB; however, the bond strengths of both adhesive systems to CAD and CID were significantly lower than those to SD. SEM observation showed that OBP improved the capacity of decalcification and resin-infiltration compared to OB. Thus, the carious dentin adhesive property of OB-P with active application was better than that of OB.

Journal

  • Adhesive Dentistry

    Adhesive Dentistry 24 (3), 111-119, 2006

    Japan Society for Adhesive Dentistry

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