Compatibility of dental adhesives and dual-cure cements.
OBJECTIVE
To evaluate the extrusion shear strength of bonding between porcelain and dentin.


METHODS
The adhesives tested were Prime&Bond NT in both dual-cure and light-cure versions, Scotchbond Multi-Purpose Plus, One-Step and Single Bond. The cements evaluated were RelyX ARC and Enforce. Discs of bovine root dentin 2.5 mm thick had the canal prepared with a standardized taper. Porcelain truncated cones were bonded into the perforations. Cements were tested in dual-cure and self-cure mode. Extrusion shear strength test was performed after 48 hours storage in 37 degrees C distilled water. Data were analyzed by three-way ANOVA/Tukey's test.


RESULTS
Bond strength values ranged from 5.5 MPa to 8.9 MPa when cements were tested in dual-cure mode, and from 1.4 MPa to 6.9 MPa when tested in self-cure mode. Scotchbond Multi-Purpose Plus was the only adhesive to present similar results when associated with cements in dual-cure and self-cure modes. For the other adhesives, differences in bond strength from 33 to 76% were observed between dual-cure and self-cure modes.
Department of Dental Materials, School of Dentistry, University of São Paulo, Brazil.
Carmen
C
Pfeifer
Denise
D
Shih
Roberto Ruggiero
RR
Braga
D000704:Analysis of Variance; D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry*; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002417:Cattle; D001840:Dental Bonding; D003776:Dental Porcelain / Q000737:chemistry; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D008689:Methacrylates / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D018915:Root Canal Preparation; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
D001672:Biocompatible Materials; C103506:Bis-GMA, BPDM, HEMA dental-bonding resin; D017220:Dentin-Bonding Agents; C103503:EnForce-Sure Cure; D008689:Methacrylates; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; C462240:RelyX ARC; D019279:Resin Cements; C425844:Scotchbond Multi-Purpose Plus; C115612:single bond; D014867:Water; D003776:Dental Porcelain; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate