Abstract
As a model experiment to understand the mechanism of adhesion of the 4-META-MMA/TBBO resin to dentin, 4-META-MMA/TBBO was polymerized in the presence of decalcified dentin sheet treated with citric acid(CA) aqueous solution containing ferric chloride(FC).Curing time of MMA/TBBO resin was reduced by the addition of 4-META to MMA.Addition of 4-META increased molecular weight of PMMA.PMMA polymerized inside the decalcified dentin sheet was insoluble in acetone.PMMA obtained from the monomer liquid used in commercial Super-Bond C & B was all insoluble and no soluble fraction was obtained.These results suggested that 4-META accelerated polymerization of MMA-TBBO resin in the presence of ferric ion and was effective to enhance molecular weight of PMMA.These effects seemed to be related to high bond strength of Super-Bond with dentin.
