Effect of Low-viscosity Resin on the Micro-tensile Bond Strength of an 'All-in-one' Adhesive to Dentin.

DOI 6 Citations 20 References
  • Inoue Satoshi
    BIOMAT-Department of Operative Dentistry and Dental Materials, School of Dentistry, Oral Pathology and Maxillo-facial Surgery, Catholic University of Leuven Department of Operative Dentistry, Hokkaodo University School of Dentistry
  • Meerbeek Bart Van
    BIOMAT-Department of Operative Dentistry and Dental Materials, School of Dentistry, Oral Pathology and Maxillo-facial Surgery, Catholic University of Leuven
  • Abe Yasuhiko
    BIOMAT-Department of Operative Dentistry and Dental Materials, School of Dentistry, Oral Pathology and Maxillo-facial Surgery, Catholic University of Leuven Department of Removable Prosthodontics, Hiroshima University Faculty of Dentistry
  • Lambrechts Paul
    BIOMAT-Department of Operative Dentistry and Dental Materials, School of Dentistry, Oral Pathology and Maxillo-facial Surgery, Catholic University of Leuven
  • Vanherle Guido
    BIOMAT-Department of Operative Dentistry and Dental Materials, School of Dentistry, Oral Pathology and Maxillo-facial Surgery, Catholic University of Leuven
  • Sano Hidehiko
    Department of Operative Dentistry, Hokkaodo University School of Dentistry

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Other Title
  • 低粘性レジンがオールインワンアドヒーシブの象牙質微小引張り接着強さに及ぼす効果

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Abstract

The purpose of this study was to evaluate the bonding effectiveness of a new ‘all-in-o e’ self-etching adhesive by TEM and by micro-tensile bond strength (MTBS) testing under various conditions (no vs. separate light-curing and composite vs. compomer), and to investigate the effect of an intermediate low-viscosity resin (LVR) on the MTBS to dentin.TEM revealed that the formation of a loosely organized 2-3 μm hybrid layer with collagen fibrils separated by resin-filled interfibrillar spaces. Resin-tag formation, ‘tubule wall hybridization’, ‘lateral tubule hybridization’ and a ‘shag-carpet’ appearance were observed, resembling the interfacial ultra-structure commonly presented with total-etch adhesives.With regard to MTBS, many specimens failed during preparation, even before they could be tested. Therefore, a survival rate was determined based on the percentage of specimens that survived during sample processing. When an intermediate LVR was additionally applied, the survival rate was significantly improved, though the MTBS remained in the same range. These results indicate that the bonding effectiveness of the ‘all-in-one’ adhesive might be affected by the application of the adhesive resin in a too thin layer. The more consistent results obtained with LVR might be due to an air-barrier effect that allows the adhesive resin to polymerize, and/ or an elastic shock-absorbing effect in partial compensation of polymerization shrinkage of the composite resin.

Journal

  • Adhesive Dentistry

    Adhesive Dentistry 18 (2), 85-92, 2000

    Japan Society for Adhesive Dentistry

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