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Resin To Dentin: A Case Study

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evaluate the effect of cavity disinfection on the shear bond strength of composite resin to dentin. 64 caries free extracted human third molars were ground flat at the buccal surface, polished and mounted auto-polymerizing acrylic resin. They were randomly distributed into four groups (of 16). In group 1 (control group), no disinfectant was used, dentin surfaces were treated with 35% phosphoric acid and Permagen primer and Permagen bonding resin. In group 2, cavity disinfectant was applied then acid etching, priming and bonding procedures were performed as in group 1. In group 3, cavity disinfectant was applied after acid etching. In group 4, cavity disinfectant was applied as in group 3, but it was rinsed off before priming and bonding procedures.

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