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Related Experiment Videos

DICOR surface treatments for enhanced bonding.

L F Bailey1, R J Bennett

  • 1Research and Development Laboratory, Sullivan Park, Corning Glass Works, New York 14831.

Journal of Dental Research
|June 1, 1988
PubMed
Summary

Preparing castable ceramic surfaces with ammonium bifluoride etch and silane treatment significantly enhances bonding to resin cements. Heat-curing the silane yielded the highest bond strength, which remained stable after one year of water storage.

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Dental Materials

Background:

  • Achieving durable bonding between ceramic dental restorations and resin cements is crucial for clinical success.
  • Surface preparation of castable ceramics significantly influences the bond strength and longevity of cementation.

Purpose of the Study:

  • To evaluate the effectiveness of different surface treatments on castable ceramic materials for enhanced adhesion to resin-based cements.
  • To determine the impact of silane coupling agents and curing methods on the shear bond strength and hydrolytic stability.

Main Methods:

  • Castable ceramic surfaces were treated with ammonium bifluoride etching and/or gamma-methacryloxypropyl-trimethoxysilane (silane).
  • Silane treatments were subjected to different curing methods (heat-cure, chemical-cure).
  • Shear bond strength testing was performed, followed by long-term water storage (one year) to assess bond durability.

Main Results:

  • The combination of ammonium bifluoride etch and silane treatment resulted in significantly higher shear bond strengths compared to etching alone.
  • Heat-curing the silane coupling agent produced the highest cement/substrate bond strength.
  • No significant decrease in bond strength was observed after one year of water storage for both heat-cured and chemically-cured silane-treated surfaces.

Conclusions:

  • Surface treatment involving ammonium bifluoride etching and silane application is a highly effective method for improving the bond strength of resin cements to castable ceramics.
  • Heat-curing of the silane coupling agent optimizes bond strength, while both heat and chemical curing provide excellent long-term hydrolytic stability.
  • These findings support the use of optimized surface preparation protocols for durable cementation of ceramic restorations.

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