Wetting ability of an acetone/based etch rinse adhesive after NaOCl-treatment
- Autores: Fátima Sánchez Aguilera, R. Osorio Ruiz, E. Osorio Ruiz, Pedro Moura, Manuel Toledano Pérez
- Localización: Medicina oral, patología oral y cirugía bucal. Ed. inglesa, ISSN-e 1698-6946, Vol. 17, Nº. 4 (Julio), 2012
- Idioma: inglés
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Resumen
Objectives: to evaluate the effect of sodium hypochlorite (NaOCl) treatment on surface dentin roughness (Ra) and contact angle (CA) when using Prime&Bond NT adhesive (PB NT).
Study Design: Extracted human third molars were sectioned to expose flat, superficial and deep dentin surfaces.
CA and Ra were measured (1) before and (2) after 35% H 3 PO 4 etching, and (3) H 3 PO 4 etching + 5% NaOCl treated for 2 minutes before the application of PB NT. CA was measured by the Axisymmetric Drop Shape Analysis Technique using distilled and deionized water and PB NT. Roughness was evaluated with a profilometer, twelve radial measurements were performed in each treatment surface. Data were analyzed with two-way ANOVA and Newman-Keuls multiple comparison test procedures.
Results: CA values decreased after acid etching and even more after NaOCl treatment on deep dentin when water was tested. With resin, there were not differences on CA results after H 3 PO 4 neither after NaOCl treatment, in both dentin surfaces. Etching and NaOCl treatment resulted in surface roughness increase.
Conclusions: In spite of the higher roughness after NaOCl treatment on superficial and deep dentin, the use of 5% NaOCl for 2 min after dentin demineralization when PB NT was employed did not improved the wettability of dentin, probably due to nanofiller content and/or hydrogen-bonding interactions with residues of the organic matrix on collagen-depleted dentin
