✍ Scribed by Eduardo M. Silva; Patrícia B. P. G. Duarte; Laiza T. Poskus; Alexandre A. L. Barcellos; José G. A. Guimarães
No coin nor oath required. For personal study only.
This study evaluated the influence of dentin deproteinization with NaOCl on the microshear bond strength (μSBS) and the nanoleakage patterns of three dentin bonding systems (DBS). Occlusal dentin surfaces, obtained from extracted noncarious human molars, were divided into two experimental groups, according to dentin surface treatment: Group I–37% H~3~PO~4~/15s and Group II–37% H~3~PO~4~/15s + 10% NaOCl/1 min. The dentin surfaces were bonded with one of the following DBS: Scotchbond Multipurpose–SBMP, Prime & Bond NT–PB and Clearfil SE Bond–SE. After 1 week storage in water at 37°C, the specimens were subjected to the μSBS test. The data were analyzed by two‐way ANOVA and Student‐Newman‐Keuls' test (p = 0.05). The nanoleakage was evaluated using scanning electron microscopy (SEM) in backscattered electron imaging regime. No significant difference in μSBS between dentin treatments was found for SBMP. For PB, μSBS increased after NaOCl dentin treatment. SE showed a reduction in μSBS in deproteinized specimens. SEM analysis showed different nanoleakage patterns for each DBS. Irrespective of dentin treatments, all SBMP specimens showed nanoleakage. SE did not show nanoleakage with the two dentin treatments. PB showed nanoleakage within the hybrid layer only in acid‐etched specimens. The influence of dentin deproteinization was dependent on the dentin bonding system formulation. © 2006 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006
📜 SIMILAR VOLUMES