The Effect of Desensitizing Dentifrices on Shear Bond Strength between Dentin and Resin Composite
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Abstract
Objectives The aim of this research was to evaluate the effects of desensitizing agents Calcium Sodium Phosphosilicate (Novamin) and 8.0% Arginine Calcium Carbonate on the shear bond strength between dentin and resin composite.
Materials and Methods Seventy premolars were prepared into the specific shape and size, and divided into three groups; Brushed dentin with distilled water, Calcium Sodium Phosphosilicate (Sensodyne® Repair and Protect) and 8.0% Arginine Calcium Carbonate (Colgate Sensitive Pro-relief), respectively. A self-adhesive bonding and resin composite were applied on the specimen under the manufacturer's instruction. Shear bond strength was investigated with the SHIMADZU EZ-S Universal Testing Machine. One way ANOVA was used to determine the significant differences of shear bond strength among the three groups at p-value of 0.05.
Results The results revealed that the shear bond strengths are significantly different between brushing with distilled water and 8.0% Arginine Calcium Carbonate (p < 0.001) and different between Calcium Sodium Phosphosilicate and 8.0% Arginine Calcium Carbonate brushing. (p = 0.008)
Conclusions Brushing with toothpaste containing 8.0% Arginine Calcium Carbonate demonstrated the lowest average shear bond strength which different from the other two groups. (p < 0.05)
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References
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