Bonding strength of resin cement to silicate glass ceramics for dental CAD/CAM systems is enhanced by combination treatment of the bonding surface.
To increase the bond strength of CAD/CAM-fabricated, leucite-reinforced glass ceramics with a resin cement, the effects of the following were investigated: surface modification by tribochemical (TBC) treatment, followed by combined application of a silane coupling agent and a functional monomer as a primer. Bond strength was evaluated by a shear bond test. It was found that a silane coupling agent was useful for all the surfaces, particularly for the TBC-treated surface. This was because of the presence of a silica layer on the modified surface. The combination of a silane coupling agent and a functional monomer on the TBC surface allowed marked improvement in bonding, whereby the bonding endured 20,000 cycles of thermal cycling. Therefore, TBC treatment in combination with a silane coupling agent and a functional monomer as a primer substantially increased the bond strength of CAD/CAM-fabricated glass ceramics with resin cement, if the treatment conditions were appropriate.
Shimakura
Yusuke
Y
Department of Prosthodontics, Showa University School of Dentistry, 2-1-1, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan.
Hotta
Yasuhiro
Y
Fujishima
Akihiro
A
Kunii
Jun
J
Miyazaki
Takashi
T
Kawawa
Tadaharu
T
D000538:Aluminum Silicates; D000704:Analysis of Variance; D002516:Ceramics; D017076:Computer-Aided Design; D001840:Dental Bonding; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis; D017276:Friction; D008689:Methacrylates; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements; D033081:Shear Strength; D012821:Silanes; D013499:Surface Properties
D000538:Aluminum Silicates; D008689:Methacrylates; D019279:Resin Cements; D012821:Silanes; D003776:Dental Porcelain; C078519:leucite; C023506:Glass ceramics; C069749:methacryloyloxydecyl dihydrogen phosphate