Microshear bond strength of resin bonding systems to machinable ceramic with different surface treatments

J Adhes Dent. 2008 Jun;10(3):189-96.

Abstract

Purpose: The bond strength and bond durability of two high-viscosity dual-curing resin luting agents with different surface treatments of ceramic were investigated.

Materials and methods: GN-I machinable ceramic surfaces were treated with 37% phosphoric acid for 30 s (PA), 5% hydrofluoric acid for 5 s (HF-5), 10 s (HF-10), or 30 s (HF-30), or blasting with 50-microm Al2O3 for 10 s (AB). The roughness of the ceramic surface was measured. Treated ceramic surfaces were bonded with three resin bonding systems (RBS): Ceramic Primer/LinkmaxHV (CP/LMHV), Monobond S/VariolinkIIHV (MBS/VLIIHV), or MBS/Heliobond/VLIIHV (MBS/HB/VLIIHV). A microshear test was used to measure the bond strength after 24 h (TC 0) and subsequent thermocycling (TC 10,000 at 4 degrees C and 60 degrees C). ANOVA was performed for statistical analysis, with significance set at p < 0.05.

Results: For three RBSs, bond strength at TC O was not affected, regardless of ceramic surface treatment (p > 0.05). All combined groups of ceramic surface treatment and resin bonding system decreased after 10,000 thermal cycles, especially groups treated with alumina blasting and bonded with each of three RBSs (p < 0.05). MBS/HB/VLIIHV with each surface treatment did not improve the bond strength and durability compared with MBS/VLIIHV.

Conclusion: CP/LMHV and MBS/VLIIHV obtained sufficient bond strength and bond durability to GN-I machinable ceramic by only cleaning with PA; the application of HB may not be necessary.

Publication types

  • Comparative Study
  • Randomized Controlled Trial

MeSH terms

  • Acid Etching, Dental
  • Acrylates / chemistry
  • Aluminum Oxide / chemistry
  • Composite Resins / chemistry
  • Dental Bonding*
  • Dental Cements / chemistry
  • Dental Etching
  • Dental Porcelain / chemistry*
  • Dental Stress Analysis
  • Humans
  • Hydrofluoric Acid / chemistry
  • Materials Testing
  • Microscopy, Electron, Scanning
  • Phosphoric Acids / chemistry
  • Resin Cements / chemistry*
  • Shear Strength
  • Stress, Mechanical
  • Surface Properties
  • Temperature
  • Time Factors
  • Viscosity

Substances

  • Acrylates
  • Composite Resins
  • Dental Cements
  • Linkmax
  • Monobond S
  • Phosphoric Acids
  • Resin Cements
  • Dental Porcelain
  • Variolink
  • heliobond
  • phosphoric acid
  • Aluminum Oxide
  • Hydrofluoric Acid