Effect of 4-MET on bond strength and penetration of monomers into enamel.
The effect of 4-[2-(methacryloyloxy)ethoxycarbonyl]phthalic acid (4-MET) in self-curing acrylic resin initiated by BPO-amine on the bond strength to etched enamel was studied. Scanning electron microscopic (SEM) observations of resin-enamel interfaces were carried out to elucidate the bonding mechanism and the effect of 4-MET on the adhesion. 4-MET, which has both hydrophilic and hydrophobic groups, increased the bond strength of self-curing acrylic resin to etched enamel and improved the bonding stability. SEM pictures strongly suggested that 4-MET promoted interpenetration of monomers into enamel prism peripheries and their polymerization therein resulted in excellent adhesion to etched enamel.
Hotta
K
K
Faculty of Dentistry, Tokyo Medical and Dental University.
Mogi
M
M
Miura
F
F
Nakabayashi
N
N
D000134:Acid Etching, Dental; D000180:Acrylic Resins; D000818:Animals; D002417:Cattle; D001840:Dental Bonding; D003738:Dental Cements; D003743:Dental Enamel / Q000648:ultrastructure; D003745:Dental Enamel Permeability; D008689:Methacrylates / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D013718:Tensile Strength
D000180:Acrylic Resins; D003738:Dental Cements; D008689:Methacrylates; C034139:4-methacryloxyethyltrimellitic acid anhydride