Özet:

Aim: The aim of this study was to evaluate shear bond strengths of new universal adhesive within selfetch and etch-and-rinse strategies on Erbium, Chromium doped Yttrium Scandium Gallium Garnet (Er,Cr:YSGG) laser irradiation dentin surface. Materials and Methods: 60 sound, human third molars were selected and the occlusal enamel of these molars was removed. Those teeth were divided into six groups according to the surface conditioning; Group A: Control (Self-etch mode), Group B: 35% phosphoric acid etching (Etch-and-rinse mode), Group C: 1,25W Er,Cr:YSGG laser irradiation, Group D: 1,5W Er,Cr:YSGG laser irradiation, Group E: 2W Er,Cr:YSGG laser irradiation, finally, Group F: 3W Er,Cr:YSGG laser irradiation. After surface conditioning, new universal adhesive (3M Single Bond Universal, 3M ESPE St.Paul, MN, USA - SBU) was applied to all dentin samples surface and resin composite (Z250 3M ESPE St.Paul, MN, USA) built up and shear bond strength test was performed. Data were analyzed using one-way ANOVA and Tukey HSD multiple compression test. p<0.05 was consider statistically significant. Results: Prior to phosphoric acid etching significantly increased the bonding effectiveness of the SBU to dentin. (p<0.05). However, Er,Cr:YSGG laser irradiation was decreased the bond strength values of SBU with all power settings. Conclusion: While using etch-and-rinse mode definitely improved bonding of the new universal adhesive to dentin, Er,Cr:YSGG laser irradiation cannot be considered as an alternative for surface treatment methods.

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