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Related Experiment Videos

Interactions of conditioners on the dentin surface.

D H Pashley1, J A Horner, P D Brewer

  • 1Medical College of Georgia, School of Dentistry.

Operative Dentistry
|January 1, 1992
PubMed
Summary

Dentin bonding agents simplify procedures by combining conditioners and primers. Minimizing acid use in dentin bonding enhances bond strength and reduces leakage, but further research is needed for smear layer strengthening.

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Area of Science:

  • Dental Materials Science
  • Adhesive Dentistry
  • Biomaterials

Background:

  • The lines between dentin conditioners and primers are blurring due to combined agents for simplified dentin bonding.
  • Current bonding systems often employ acidic conditioners to remove the smear layer and demineralize dentin.

Purpose of the Study:

  • To evaluate the optimal balance of acid concentration and application time for dentin conditioners to achieve maximum bond strength and minimal microleakage.
  • To explore the pulpal effects of acidic conditioners and the sealing capabilities of subsequent bonding agents and resin composites.

Main Methods:

  • Review of current dentin bonding systems and their use of acidic conditioners.
  • Analysis of factors influencing bond strength and microleakage in dentin bonding.

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  • Discussion of alternative bonding strategies, including systems designed for smear layer adhesion.

    • Main Results:

    • Reducing acid concentration and/or application time for dentin conditioners may lead to improved bond strengths and reduced microleakage.
    • Pulpal effects of acidic conditioners appear minimal if dentin is effectively sealed by subsequent restorative materials.
    • Newer systems, such as light-cured glass-ionomer cements, are designed for bonding to smear layers.

    Conclusions:

    • Optimizing acid use in dentin conditioning is crucial for enhancing bond performance.
    • Effective sealing of dentin by restorative materials mitigates potential pulpal issues from acidic conditioners.
    • Further research is necessary to develop methods for strengthening smear layers and improving their adhesion to resins.