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Related Experiment Videos

Bond strength to crown and root dentin

M F Burrow1, H Sano, M Nakajima

  • 1School of Dental Science, University of Melbourne, Victoria, Australia.

American Journal of Dentistry
|October 1, 1996
PubMed
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This study compared four dentin bonding systems, finding varied tensile bond strengths and hybrid layer structures between crown and root dentin. Material type and dentin substrate influence bonding performance.

Area of Science:

  • * Dental Materials Science
  • * Biomaterials Engineering
  • * Adhesive Dentistry

Background:

  • * Dentin bonding systems are crucial for dental restorations.
  • * Understanding substrate differences (crown vs. root dentin) is vital for optimal bonding.
  • * Evaluating commercial systems ensures clinical efficacy and material innovation.

Purpose of the Study:

  • * To assess tensile bond strengths of four dentin bonding systems to bovine crown and root dentin.
  • * To analyze the hybrid layer structure formed by each system on different dentin substrates.
  • * To correlate bond strength and hybrid layer morphology with material and substrate characteristics.

Main Methods:

  • * Four commercial dentin bonding systems (All-Bond 2, Super-Bond D-Liner Plus, Clearfil Liner Bond II, ProBond) were tested.

Related Experiment Videos

  • * Bovine crown and root dentin were prepared, and bonding areas demarcated.
  • * Tensile bond strengths were measured after 24-hour water storage; hybrid layers were examined via SEM.

    • Main Results:

    • * All-Bond 2 showed lower strength on crown dentin; Liner Bond II exhibited the opposite (P < 0.01).
    • * ProBond and Super-Bond D-Liner Plus demonstrated no significant difference between crown and root dentin (P > 0.05).
    • * Hybrid layers were observed for most systems, with ProBond showing smear layer infiltration.

    Conclusions:

    • * Dentin bonding system performance varies between crown and root dentin.
    • * Hybrid layer morphology is influenced by the bonding system's mechanism and substrate.
    • * Material-specific bonding strategies are necessary for predictable clinical outcomes.