AMALGAM SHEAR BOND STRENGTH TO DENTIN USING DIFFERENT BONDING AGENTS

This study evaluated the shear bond strength of amalgam to dentin usin g five different bonding agents: Amalgambond Plus, Optibond, Imperva D ual, All-Bond 2, and Clearfil Linear Bond. Flat dentin surfaces obtain ed by grinding the occlusal portion of 50 human third molars were used for this study. To contain the amalgam on the tooth surface, cylindri cal plastic molds were placed on the dentin and secured with sticky wa x. The bonding agents were then applied according to the manufacturers ' instructions or light activated and Tytin amalgam was condensed into the plastic molds. The samples were thermocycled and shear bond stren gths were determined using an Instron Universal Testing Machine. Analy sis by one-way ANOVA indicated significant difference between the five groups (P < 0.05). The bond strength of amalgam to dentin was signifi cantly higher with Amalgambond Plus using the High-Performance Additiv e than with the other four bonding agents.