Premium
Effect of Surface Treatment on Shear Bond Strength of Zirconia to Human Dentin
Author(s) -
Chai John,
Chu Frederick C. S.,
Chow Tak W.
Publication year - 2011
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/j.1532-849x.2011.00695.x
Subject(s) - cubic zirconia , materials science , bond strength , composite material , silane , ceramic , dentin , dental bonding , adhesive , layer (electronics)
Purpose: The effect of surface treatment using tribochemical silica coating/silane coupling on the shear bond strengths of (1) a glass‐infiltrated, zirconia‐reinforced alumina (In‐Ceram Zirconia) and (2) a yttria‐stabilized zirconia ceramic (YZ Zirconia) to human dentin was studied. Materials and Methods: Twelve specimens of each ceramic were randomly assigned to one of three surface treatments: (1) no surface treatment (control group); (2) a chairside tribochemical silica coating/silane coupling system (CoJet group); and (3) a laboratory tribochemical silica coating/silane coupling system (Rocatac group). The mode of failure of each specimen was determined under magnification. Results: The shear bond strengths (mean ± SD) of In‐Ceram Zirconia of the control, CoJet and Rocatec groups were 5.7 ± 4.3 MPa, 11.4 ± 5.4 MPa, and 6.5 ± 4.8 MPa, respectively. The corresponding figures for YZ Zirconia were 8.2 ± 5.4 MPa, 9.8 ± 5.4 MPa, and 7.8 ± 4.7 MPa. Two‐way ANOVA revealed significant differences in bond strength due to the difference in surface treatment ( p = 0.02), but the bond strengths between the two ceramics were not significantly different ( p = 0.56). Post hoc tests showed that In‐Ceram Zirconia treated with CoJet had significantly higher shear bond strengths than those untreated ( p < 0.05) or treated with Rocatec ( p < 0.05). Surface treatment did not affect the shear bond strength of YZ Zirconia significantly ( p > 0.05). Conclusion: The bonding of In‐Ceram Zirconia can be improved by the chairside surface treatment system.