Effect of Water Storage on Bond Strength of Self-etching Adhesives to Dentin
Rubens Nazareno Garcia, Mario Fernando de Goes, Marcelo Giannini
Citation Information :
Garcia RN, de Goes MF, Giannini M. Effect of Water Storage on Bond Strength of Self-etching Adhesives to Dentin. J Contemp Dent Pract 2007; 8 (7):46-53.
The objective of this study was to evaluate the bond strength of self-etching adhesive systems one week and one year after storage in water.
Methods and Materials
Fragments from the buccal surfaces of 45 bovine teeth were prepared (12 mm in length X 5 mm in width X 1.0 mm in thickness). Dentin surfaces were wet-abraded with 600-grit SiC paper to create a standardized smear layer. Samples were randomly assigned to 18 experimental groups (n=5), according to nine adhesive systems tested (Single Bond; Adper Prompt L-Pop; iBond; One-Up Bond F; Xeno III; Clearfil SE Bond; Optibond Solo Plus SE; Tyrian SPE/One-Step Plus; and UniFil Bond) and two waterstorage times (one week and one year). Adhesives were applied according to the manufacturers’ instructions. Z250 composite was applied into the molds to fill up the internal diameter volume of a Tygon tubing mold (1.0 mm high / 0.7 mm internal diameter). Micro-shear bond strengths were determined using an apparatus attached to an Instron Universal Testing Machine (0.5 mm/min). Data were statistically analyzed using a twoway analysis of variance (ANOVA) and the Tukey's test (5%).
Results
One year after water storage the dentin bond strength of all adhesive systems reduced significantly, except for One-Up Bond F.
Conclusion
Water-storage time decreased the bond strength for most dentin bonding agents tested.
Citation
Garcia RN, de Goes MF, Giannini M. Effect of Water Storage on Bond Strength of Self-etching Adhesives to Dentin. J Contemp Dent Pract 2007 November; (8)7:046-053.
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