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- Title
Resin-Dentin Bonds of Etch-and-Rinse Adhesives to Alcohol-saturated Acid-etched Dentin.
- Authors
De Oliveira Barros, Lívia; Apolonio, Fabianni Magalhães; Loguercio, Alessandro Dourado; Aragão Saboia, Vicente de Paulo
- Abstract
Purpose: To evaluate the effect of the alcohol wet-bonding technique on bond performance of the adhesive interface produced by two-step etch-and-rinse adhesive systems. Materials and Methods: Composite buildups were bonded to sectioned human third molars using Adper Single Bond 2 (SB) bonded to acid-etched dentin saturated with water (control) or ethanol, or XP Bond (XP) bonded to acid-etched dentin saturated with water (control) or tert-butanol. A simplified dentin dehydration protocol was performed using 100% ethanol or 99.5% tert-butanol directly applied to dentin for 60 s. Specimens were cut into nontrimming dentin-composite beams that were divided equally in two subgroups: immediately tested and after immersion in 10% NaOCI solution for 1 h. Specimens were tested in tension at a crosshead speed of 1 mm/ min until failure, and the failure mode was evaluated. Data were statistically analyzed with three-way ANOVA and Tukey's test (a = 0.05). Additional dentin disks were bonded using the same groups tested and examined for leakage under light microscopy after immersion in ammoniacal silver nitrate solution. Results: The SB control group showed significantly higher bond strength values than did SB used on ethanol-saturated dentin (p < 0.05); this tendency was confirmed by the silver nitrate deposition. The use of tert-butanol did not influence XP bond strength values (p > 0.05) or silver nitrate penetration. NaOCI solution significantly reduced the bond strength of all groups tested (p < 0.05) and also increased the interfacial silver nitrate penetration. Conclusion: The simplified alcohol wet-bonding technique used in the present study was not able to improve resin/dentin bond performance for simplified etch-and-rinse adhesive systems.
- Subjects
DENTAL resins; DENTIN; DENTAL acid etching; ETHANOL; SOLVENTS; BUTANOL; SILVER nitrate; ANALYSIS of variance
- Publication
Journal of Adhesive Dentistry, 2013, Vol 15, Issue 4, p333
- ISSN
1461-5185
- Publication type
Article
- DOI
10.3290/j.jad.a29380