Cooperation of phosphate monomer and silica modification on zirconia.
Ceramic restorations with resin-based adhesive systems have been the focus of recent attention in clinical dentistry. Yttrium-oxide-partially-stabilized zirconia (YPSZ) ceramics have optimized physical properties and exhibit favorable fracture toughness, though their bonding properties are problematic. Although functional phosphate monomers and silica-coating by tribochemical modification were expected to improve the bonding properties between YPSZ ceramics and resin-based adhesives, these two methods remain controversial. This study evaluated the efficiency of silica-coating by tribochemical modification of YPSZ ceramics. The application of phosphate monomer and a silane coupling agent on silica-coated YPSZ was also investigated. The silica-coating of YPSZ ceramics by tribochemical modification was not efficient, given the higher mechanical toughness of the densely sintered ceramics. Stable shear bond strength was achieved on silica-coated YPSZ ceramics with the cooperative interaction of phosphate monomer and silane coupling.
Department of Oral Biomaterials and Technology, Showa University, Shinagawa-ku, Tokyo 142-8555, Japan. reina.t@dent.showa-u.ac.jp
R
R
Tanaka
A
A
Fujishima
Y
Y
Shibata
A
A
Manabe
T
T
Miyazaki
D002516:Ceramics / Q000737:chemistry; D020770:Compomers / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry*; D003799:Dental Stress Analysis; D008422:Materials Testing; D010710:Phosphates / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D033081:Shear Strength; D012823:Silicate Cement / Q000737:chemistry; D013499:Surface Properties; D015040:Zirconium / Q000737:chemistry*
D020770:Compomers; D003738:Dental Cements; D010710:Phosphates; D011108:Polymers; D019279:Resin Cements; D003776:Dental Porcelain; D012823:Silicate Cement; D015040:Zirconium