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Dentin wetting by four adhesive systems.

J I Rosales-Leal1, R Osorio, J A Holgado-Terriza

  • 1Dental Materials Department, University of Granada, 18071-Granada, Spain. irosales@ugr.es

Dental Materials : Official Publication of the Academy of Dental Materials
|September 25, 2001
PubMed
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This study found that acid etching improves dentin wetting and roughness, with deeper dentin showing greater effects. Adhesive efficiency, measured by bond strength and microleakage, correlates with dentin wetting properties.

Area of Science:

  • Dental materials science
  • Adhesive dentistry
  • Surface characterization

Background:

  • Dentin surface properties significantly influence adhesive bonding.
  • Understanding resin wetting is crucial for predicting adhesive performance.
  • Variations in dentin substrate (superficial vs. deep) may affect wetting and adhesion.

Purpose of the Study:

  • To assess the dentin wetting capabilities of four distinct adhesive systems.
  • To establish a correlation between the wetting characteristics of adhesives and their bonding efficiency.
  • To investigate the impact of dentin substrate depth on wetting and adhesion.

Main Methods:

  • Evaluation of four dental adhesive systems: Scotch Bond Multipurpose Plus, Syntac Single-Component, One-Step, and Heliobond.

Related Experiment Videos

  • Measurement of dentin roughness and water contact angle before and after acid etching on superficial and deep dentin.
  • Assessment of resin wetting dynamics (spreading time) and correlation with shear bond strength and microleakage in Class V cavities.

    • Main Results:

    • Acid etching uniformly enhanced dentin roughness and wettability across tested acids, with deeper dentin exhibiting higher values.
    • Most adhesives showed similar wetting and bond strength, except Heliobond, which had lower performance.
    • Microleakage was generally higher on the gingival wall, with Scotch Bond Multipurpose Plus showing the least and Heliobond the most leakage.

    Conclusions:

    • Dentin conditioning with various agents yields comparable changes in roughness and wettability.
    • The chemical and wetting properties of resin adhesives are key determinants of adhesion to dentin substrates.