Shear bond strength of "one bottle" dentin adhesives.
BACKGROUND
Several 1-bottle dentin adhesive resins have been introduced to the market; however, their shear bond strength still requires further investigation.


OBJECTIVE
This study was designed to evaluate the shear bond strength of five 1-bottle fifth generation dentin adhesive resin materials.


METHODS
Bond 1, Single Bond, One-Step, Prime & Bond 2.1, and Tenure Quick with fluoride were evaluated. Tenure All-Surface Bonding System, a fourth generation dentin adhesive resin, was used as the control group. Twelve specimens were prepared from each material, and the shear bond strength was measured by using a universal testing machine at a crosshead speed of 0.5 mm/min. Fracture patterns were studied with the use of light and SEM. The results were analyzed with the use of ANOVA.


RESULTS
The mean shear bond strength for each resin was as follows: Bond 1: 18.36 +/- 3.19 MPa; Single Bond: 16.22 +/- 2.11 MPa; One-Step: 22.51 +/- 3.69 MPa; Prime & Bond: 16. 64 +/- 3.66 MPa; Tenure Quick: 16.43 +/- 3.2 MPa; and Tenure All-Surface Bonding System: 15.06 +/- 3.5 MPa. The shear bond strength values of One-Step dentin adhesive resin showed significant differences compared with the other 5 groups (P<.001). No significant differences were seen between the control group and the other four 1-bottle dentin adhesive resins (0.25 > P>.1). Eighty percent or more of the specimens for each adhesive failed at the dentin/adhesive interface. An exception was Tenure All-Surface Bonding System in which all specimens failed at the dentin/adhesive interface.


CONCLUSIONS
The 1-bottle systems tested bond to dentin with a strength similar to that of the control group. In addition, the shear bond strengths of 4 of the 1-bottle systems tested were not significantly different.
Al-Ehaideb
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A
Department of Dentistry, King Fahad National Guard Hospital and College of Dentistry, King Saud University, Riyadh, Saudi Arabia. alehaideb@hotmail.com
Mohammed
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H
D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D001840:Dental Bonding; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008963:Molar; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D013718:Tensile Strength
C115611:BOND-1 adhesive; C103506:Bis-GMA, BPDM, HEMA dental-bonding resin; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D011109:Polymethacrylic Acids; C103500:Prime & Bond; D019279:Resin Cements; C115612:single bond; C403633:tenure quik; C074811:Tenure adhesive; D017438:Bisphenol A-Glycidyl Methacrylate