Abstract
4-META adhesive resin cement was developed.4-META has good affinity with hard tissues due to the hydrophobic and hydrophilic groups.The physical properties were measured:setting time 7 min.16 sec., film thickness 16.5μ, compressive strength 1720kgf/cm2, tensile strength 205kgf/cm2, and disintegrated ratio 0.01%.The tensile adhesive strength to pretreated enamel was 90kgf/cm2, pretreated dentin 50〜55kgf/cm2, several dental alloys sandblasted with aluminium oxide including gold and Ni-Cr etc.75〜100kgf/cm2, Longer tags in etched enamel and resin reinforced dentin in pretreated dentin which were formed by the application of 4-META were observed by SEM.Resin reinforced dentin is a mixture of cured monomers and dentin at molecluar level, and has good resistance against acids.
