Shear bond strength of a new one-bottle dentin adhesive.
OBJECTIVE
To test the shear bond strength of a new adhesive, 3M Single Bond, to dentin surfaces containing different degrees of moisture. Two commercially available one-bottle adhesives (Prime & Bond, One-Step) and a conventional three-step system (Scotchbond Multi-Purpose Plus) were included for comparison.


METHODS
120 bovine teeth were embedded in acrylic and the labial surfaces were polished to 600 grit to create standardized dentin surfaces for testing. Resin composite was bonded to dentin using a gelatin capsule technique. Four adhesive systems were evaluated with three different degrees of surface moisture (moist, wet, and overwet). Shear bond strengths of adhesives to dentin were determined using a universal testing machine and analyzed by ANOVA and Tukey's post hoc tests.


RESULTS
Single Bond had mean shear bond strengths of 19.2, 23.2 and 20.3 MPa to moist, wet, and overwet dentin, respectively. Bond strengths of the three-component system Scotchbond Multi-Purpose Plus ranged from 23.1 to 25.3 MPa, but were not significantly higher than the values for Single Bond. Prime & Bond had bond strengths similar to those of Single Bond, but One-Step had significantly lower bond strengths (P < 0.05) in the wet and overwet conditions.
Swift
E J
EJ
Department of Operative Dentistry, University of North Carolina, Chapel Hill 27599-7450, USA.
Bayne
S C
SC
D000704:Analysis of Variance; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D002417:Cattle; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D066298:In Vitro Techniques; D007180:Incisor; D008422:Materials Testing / Q000706:statistics & numerical data; D011109:Polymethacrylic Acids / Q000737:chemistry*; D019279:Resin Cements; D013718:Tensile Strength; D017155:Wettability
D017220:Dentin-Bonding Agents; D011109:Polymethacrylic Acids; C103500:Prime & Bond; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; D017438:Bisphenol A-Glycidyl Methacrylate