Objective: The aim of this study was to evaluate effect of 2 different pre-treatment procedures before silanization on the fracture resistance of parapost fiber white system. Methods and Materials: Root canal treatment was performed on thirty human single rooted premolars. Post space was prepared and samples were divided into three groups of 10 each according to different treatment viz: Group-I Negative control, Group-II37% phosphoric acid+Silane and Group-III 7th generation bonding agent (Xeno V) +Silane. The posts were then cemented into the tooth using resincement (Rely ARC; 3M ESPE) and acrylic resin blocks were obtained using cylindrical moulds. Samples were subjected to the fracture resistance test using universal testing machine (UTM) at the cross headed speed of 3 mm/min. Results: There was a statistically significant difference between the three groups. 7th generation bonding agent+Silane group showed highest fracture resistance compared with other groups. Conclusions: Using 7th generation bonding agent as a pretreatment of the parapost fiber white system significantly improved the silanization efficiency.
