Wetting ability of an acetone/based etch&rinse adhesive after NaOCl-treatment.

Abstract:

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% H₃PO₄ etching, and (3) H₃PO₄ etching + 5% NaOCl treated for 2 minutes before the application of PB NT. CA was measured by the Axisymetric 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 H₃PO₄ 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.

authors

Aguilera FS,Osorio R,Osorio E,Moura P,Toledano M

doi

10.4317/medoral.17654

subject

Has Abstract

pub_date

2012-07-01 00:00:00

pages

e644-8

issue

4

eissn

1698-4447

issn

1698-6946

pii

17654

journal_volume

17

pub_type

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