Long-term bond strength of adhesive systems applied to etched and deproteinized dentin
DOI:
https://doi.org/10.1590/S1678-77572007000600004Keywords:
Dentin-bonding agents, Dentin, Tensile strengthAbstract
The aim of this study was to evaluate the early and 12-month bond strength of two adhesive systems (Single Bond-SB and One Step-OS) applied to demineralized dentin (WH) and demineralized/NaOCl-treated dentin (H). Twenty flat dentin surfaces were exposed, etched, rinsed and slightly dried. For the H groups, a solution of 10% NaOCl was applied for 60 s, rinsed (15 s) and slightly dried. The adhesives were applied according to the manufacturer's instructions and composite resin crowns were incrementally constructed. After 24 h (water-37ºC), the specimens was sectioned in order to obtain resin-dentin sticks (0.8 mm²). The specimens were tested in microtensile (0.5 mm/min) immediately (IM) or after 12 months of water storage (12M). The data (MPa) were subjected to ANOVA and Tukey's test (a=0.05). Only the main factors adhesive and time were significant (p=0.004 and p=0.003, respectively). SB (42.3±9.1) showed higher bond strengths than OS (33.6±11.6). The mean bond strength for IM-group (42.5±8.7) was statistically superior to 12M (33.3±11.8). The use of 10% NaOCl, after acid etching, did not improve the immediate and the long-term resin-dentin bond strength.Downloads
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Published
2007-12-01
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Original Articles
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Todo o conteúdo do periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons do tipo atribuição CC-BY.
How to Cite
Long-term bond strength of adhesive systems applied to etched and deproteinized dentin . (2007). Journal of Applied Oral Science, 15(6), 475-479. https://doi.org/10.1590/S1678-77572007000600004