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ORIGINAL RESEARCH
Year : 2015  |  Volume : 6  |  Issue : 2  |  Page : 75-81

The effect of the nanofilled adhesive systems on shear bond strength of all-ceramics to dentin


1 Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
2 Department of Chemistry, Biochemistry Division, Nanotechnology and Nanomedicine and Biochemistry Division, Hacettepe University, Ankara, Turkey

Correspondence Address:
Filiz Keyf
Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Sihhiye, 06100 Ankara
Turkey
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DOI: 10.4103/0976-433X.155457

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Aim: This study evaluated shear bond strength between three all-ceramic systems to dentin using six different adhesives, of which three of them contain nanofillers. Materials and Methods: Ceramic discs were prepared from each of Ceramco, IPS Empress 2 and Copran Zr. Different dentin surfaces were prepared with adhesives. Adper Single Bond Plus, Nano-bond, Prime & Bond NT (PB), Excite Bond, One Step Plus, Opti Bond Solo Plus were applied to the conditioned dentin surfaces. Ceramic discs were luted to the dentin with resin cement. All specimens were kept in water at 37°C for 1-week and thermal cycled for 500 cycles in 5°C and 55°C. Shearing test was conducted, and statistical analyses were performed using nonparametric tests (α = 0.05). Fractured surfaces of each specimen were inspected with Scanning Electron Microscope. Furthermore, distribution of nanofillers into the nanofilled adhesives was examined by transmission electron microscope. Results: Significant differences were observed in bond strength values of the adhesives (P < 0.05). For each ceramic, PB showed the highest bond strength values. Failure mode was cohesive in nanofilled adhesives resin and mixed failure for the others. Nanofillers were aggregated in some areas for each nanofilled adhesive. Ceramco showed the highest bond strength values while Copran Zr showed the lowest. Conclusion: Nanofilled adhesive systems would suggest for good clinical performance together with all-ceramics system. Furthermore, felspathic ceramics is better than the other all-ceramics systems.


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