Özet:

Objective: The aim of this study was to evaluate the shear bond strengths of sonic activated nano hybrid bulk-fill composite resin to glass ionomer-based materials. Materials and Methods: 26 cylindrical acrylic blocks with a hole in the middle measuring 4 mm diameter and 2 mm height were prepared and divided into two groups (n=13) according to the materials used; conventional glass ionomer cement and resin modified glass ionomer cement. The hole was filled with conventional glass ionomer cement and resin modified glass ionomer cement according to manufacturer's instructions. After adhesive procedures, SonicFill was applied upon glass ionomer cements with the help of cylindrical plastic mold (2.3 mm in diameter and 3 mm in height) then light cured. All specimens were stored for 24 h in a moist environment and then shear bond strength was measured by universal testing machine. Data were analyzed using Independent- Samples T-test. Results Means and standard deviations of shear bond strength values were recorded for conventional glass ionomer cement as 10.52 ± 1.63 and 14.85 ± 1.79 MPa for resin modified glass ionomer cement. Statistically significant differences in shear bond strength were observed among groups (p<0.05). Conclusion Within the limitations of the present study, a resin modified glass ionomer cementwhich exhibited significantly higher shear bond strength than conventional glass ionomer cement-could be preferred choice when placing glass ionomer materials under sonic activated nano hybrid bulk-fill composite resin. However, further clinical research is needed to confirm the findings of this in vitro study.

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