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Effect of different surface treatments on shear bond strength of zirconia bonded to dentin with two resin luting cements | ||
| MUSTANSIRIA DENTAL JOURNAL | ||
| Article 1, Volume 10, Issue 2, 2013, Pages 167-175 | ||
| Authors | ||
| Dr. Ihsan N.Behnam B.D.S; | ||
| Abstract | ||
| All-ceramic materials, especially silica-based lithium di-silicate and non-silicatebased Zirconia have become a topic of interest in the field of dentistry. It is still difficult to achieve a strong and durable resin-ceramic adhesion, especially resin- Zirconia bonding, focusing on the latest resin bonding techniques including surface treatment, priming and cementation. The purposes of this study was to evaluate the effect of different surface treatments on shear bond strength of zirconia bonded to dentin with two resin luting cements.A total 60 zirconia discs 3mm thickness and 6 mm diameter subjected to three types of surface treatments,irradiated with CO2 laser,etched with hydrofluoric acid, sandblasted+ceramic primer application,then bonded to dentin with two types of resin cement (variolinkII and Dentocem). Shear bond strength was measured and the type of failures were determined. The data were statistically analyzed by one-way analysis of variance and Independent T-test. The results of this study showed that the groups which were sandblasted treated with ceramic primer produced highest shear bond strength followed by hydrofluoric etched groups and CO2 laser irradiated groups showed the lowest bond strength. Dentocem resin cement showed better bonding than variolink II.The failures were either adhesive (between discs and cement)or cohesive(cements on both disc and dentin).As a conclusion the bonding of Zirconia can be improved by the different surface treatments especially by sandblasting ceramic primer . Dentocem resin cement showed higher shear bond strength than variolinkII so promoted better adhesion between dentin and zirconia. | ||
| Keywords | ||
| Key Words; Surface Treatments; luting resin; Bond strength | ||
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