title: The effect of dentin primer on the shear bond strength between composite resin and enamel.
abstract: The purpose of this study was to determine the effect of accidental dentin primer contact with etched enamel on shear bond strength of composite resin to enamel. Four dentin bonding systems were included in this study: GLUMA Dentin Bond, Scotchbond, and Prisma Universal Bond 2 and 3. Eighty extracted human permanent anterior teeth were used and divided in eight test groups. The vestibular surfaces were ground and acid etched. For each dentin bonding system 10 samples were treated with dentin primer prior to placement of resin. Shear bond testing showed that enamel contact with dentin primer in the above two systems decreased the shear bond strength between composite and enamel by 31 to 44%.
authors.affiliation: University of Saskatchewan, College of Dentistry, Department of Restorative and Prosthetic Dentistry, Saskatoon, Canada.
authors.forename: F
authors.initials: F
authors.lastname: Hadavi
authors.forename: J H
authors.initials: JH
authors.lastname: Hey
authors.forename: E R
authors.initials: ER
authors.lastname: Ambrose
authors.forename: P W
authors.initials: PW
authors.lastname: Louie
authors.forename: D J
authors.initials: DJ
authors.lastname: Shinkewski
mesh_terms: D000134:Acid Etching, Dental; D003188:Composite Resins; D001840:Dental Bonding; D003743:Dental Enamel / Q000187:drug effects*; D017220:Dentin-Bonding Agents / Q000737:chemistry / Q000494:pharmacology; D005976:Glutaral / Q000737:chemistry / Q000494:pharmacology; D006801:Humans; D008422:Materials Testing; D011109:Polymethacrylic Acids / Q000737:chemistry / Q000494:pharmacology; D019279:Resin Cements; D013499:Surface Properties / Q000187:drug effects; D013718:Tensile Strength
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D011109:Polymethacrylic Acids; D019279:Resin Cements; C062652:Prisma Universal Bond; C041330:Scotchbond; C044372:Gluma; D005976:Glutaral