Shear bond strengths of various luting cements to zirconia ceramic: Surface chemical aspects

Min Jeong Kim, Young Kyung Kim, Kyo Han Kim, Tae Yub Kwon

Research output: Contribution to journalArticlepeer-review

115 Scopus citations

Abstract

Objectives: To measure the shear bond strengths of various luting cements to a sandblasted zirconia ceramic and to determine the surface energy parameters of the luting cements. Methods: Two conventional glass ionomer cements, two resin-modified glass ionomer cements, two compomer cements, and two adhesive resin cements were prepared and bonded to sandblasted zirconia (Lava). All bonded specimens were stored in water at 37 °C for 48 h and then half of them additionally thermocycled 10,000 times prior to the shear bond strength test (n = 10). Surface roughness (R a) values and surface energy parameters of the eight luting cements and polished zirconia ceramic were evaluated using a profilometer and contact angle measurements, respectively (n = 10). The bond strength and surface roughness data were statistically analysed using non-parametric and parametric procedures, respectively (α = 0.05). Relationships between surface energy parameters and measured shear bond strengths were investigated using the Spearman rank correlation test. Results: Panavia F 2.0 and Principle produced higher bond strengths than the other cements, with no significant changes before and after thermocycling. Fuji I, Ketac Cem Easymix, and Ionotite F yielded near-zero or zero values after thermocycling. All debonded specimens showed adhesive failure. Mean R a values ranged from 0.104 to 0.167 μm. We found the base (hydrogen bond accepting) components of the luting cements significantly affected the bond strengths both before and after thermocycling. Conclusion: It is recommended that the surface energy parameters of luting cements be considered in evaluating their adhesive properties with zirconia ceramic.

Original languageEnglish
Pages (from-to)795-803
Number of pages9
JournalJournal of Dentistry
Volume39
Issue number11
DOIs
StatePublished - Nov 2011

Keywords

  • Luting cement
  • Shear bond strength
  • Surface energy parameter
  • Thermocycling
  • Zirconia ceramic

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