The aim of this study was to compare the microleakage
of total-etch and self-etch adhesives by three methods including dye
extraction, dye penetration and fluid filtration with determining the
correlation value among these techniques. Seventy-two premolar teeth were
selected for this in vitro study and Class 5 cavities were prepared on the
buccal surface of these at the cementoenamel junction area. It was applied for
half of these cavities, Optibond Solo Plus (OSP) (two-step etch & rinse) and
another half, Optibond All-in-One (OA) (one-step self-etch) and then all of
them were restored with a light cure resin composite; Herculite XRV. Then
samples were divided randomly into three subgroups based on the method of microleakage measurement (n = 12). In the first pair group, leakage was assessed by
the dye extraction method. Dye penetration and fluid filtration methods were
used in the second and third pair groups for the same purpose respectively.
Data were analyzed by Paired t-test and Wilcoxon test and correlation coefficients
(α = 0.05). There was no significant
difference in the dye extraction (P = 0.657) and dye penetration (P = 0.732)
methods between the microleakage of total-etch and self-etch adhesives.
Microleakage of self-etch adhesive in fluid filtration technique was significantly
more than total-etch adhesive (P = 0.012). No significant correlation was
found among the results obtained with the three methods of microleakage evaluation.
Adhesive systems showed variously behave in different methods of microleakage assessment.
Cite this paper
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