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Bonding to etched, physiologically hydrated dentin

A Elhabashy1, E J Swift

  • 1Department of Operative Dentistry, School of Dentistry, University of North Carolina, Chapel Hill 27599-7450.

American Journal of Dentistry
|February 1, 1994
PubMed
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Hydrostatic pressure significantly improves resin composite bond strength to dentin using Kanca's total-etch technique. This finding is crucial for dental adhesive performance under simulated physiologic conditions.

Area of Science:

  • Dental Materials Science
  • Adhesive Dentistry
  • Biomaterials Engineering

Background:

  • Dental bonding agents are essential for restoring tooth structure.
  • Understanding factors affecting bond strength is critical for clinical success.
  • Hydrostatic pressure's role in dentin bonding requires further investigation.

Purpose of the Study:

  • To evaluate the shear bond strength of resin composite to dentin.
  • To assess the influence of hydrostatic pressure on bond strength using Kanca's total-etch technique.

Main Methods:

  • Utilized Kanca's total-etch technique with 37% phosphoric acid, Tenure Solutions A and B, and Scotchbond 2 Adhesive.
  • Tested shear bond strength on dentin specimens under simulated physiologic hydrostatic pressure and without pressure.

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Main Results:

  • Mean shear bond strength was 20.1 MPa to dentin under simulated physiologic pressure.
  • Mean shear bond strength was 15.2 MPa to dentin without pressure.
  • A significant increase in bond strength was observed under hydrostatic pressure.

Conclusions:

  • Hydrostatic pressure enhances the shear bond strength of resin composite to dentin.
  • Kanca's total-etch technique demonstrates improved efficacy under simulated physiologic conditions.
  • These findings have implications for the longevity of dental restorations in vivo.