[Adhesion mechanism of MMA/TBBO resin containing 4-META to decalcified dentin].
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.
Akimoto
T
T
Institute for Medical and Dental Engineering, Tokyo Medical and Dental University.
Kadoma
Y
Y
Imai
Y
Y
D000180:Acrylic Resins / Q000737:chemistry*; D000269:Adhesives; D001896:Boron Compounds; D002712:Chlorides; D002951:Citrates; D019343:Citric Acid; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003804:Dentin / Q000187:drug effects*; D005290:Ferric Compounds; D008422:Materials Testing; D008689:Methacrylates; D008768:Methylmethacrylates / Q000737:chemistry*; D013718:Tensile Strength
D000180:Acrylic Resins; D000269:Adhesives; D001896:Boron Compounds; D002712:Chlorides; D002951:Citrates; D003738:Dental Cements; D005290:Ferric Compounds; D008689:Methacrylates; D008768:Methylmethacrylates; D019343:Citric Acid; C031172:4-META resin; C049495:Super-bond; C024555:ferric chloride