Abstract
To develop a more effective primer, it is important to understand how the primer enhances the adhesiveness of resin to etched-dentin.In this study, the N-methacryloyl-ω-amino acid(NMωA)was designed for dentin primer.The effects of the number of methylene in the NMωA primer on the strength of the interaction between NMωA and dentinal collagen, and on the bond strength of resin to etched-dentin primed with NMωA were investigated.The amide and carboxylic acid in the NMωA molecule interacted with dentinal collagen.The interaction became stronger by increasing the methylene chain length in the NMωA molecule.The bond strength of resin to etched-dentin primed with NMωA increased, reflecting the strength of the interaction.The bond strength of resin to etched-dentin primed with NMωA strongly depended on the strength of the interaction between NMωA and dentinal collagen.
