de Melo, Renata Marques [UNESP]Galhano, Graziela A. P. [UNESP]Barbosa, Silvia Helena [UNESP]Valandro, Luiz FelipePavanelli, Carlos Augusto [UNESP]Bottino, Marco Antonio [UNESP]2014-05-202014-05-202008-02-01Journal of Adhesive Dentistry. Hanover Park: Quintessence Publishing Co Inc, v. 10, n. 2, p. 127-133, 2008.1461-5185http://hdl.handle.net/11449/22820Purpose: This study evaluated the bond strength of two etch-and-rinse adhesive systems (two- and three-step) and a self-etching system to Coronal and root canal dentin.Materials and Methods: The root canals of 30 human incisors and canines were instrumented and prepared with burs. The posts used for luting were duplicated with dual resin cement (Duo-link) inside Aestheti Plus #2 molds. Thus, three groups were formed (n = 10) according to the adhesive system employed: All-Bond 2 (TE3) + resin cement post (rcp) + Duo-link (DI); One-Step Plus (TE2) + rcp + DI; Tyrian/One-Step Plus (SE) + rcp + DI. Afterwards, 8 transverse sections (1.5 mm) were cut from 4 mm above the CEJ up to 4 mm short of the root canal apex, comprising coronal and root canal dentin. The sections were submitted to push-out testing in a universal testing machine EMIC (1 mm/min). Bond strength data were analyzed with two-way repeated measures ANOVA and Tukey's test (p < 0.05).Results: The relationship between the adhesives was not the same in the different regions (p < 0.05). Comparison of the means achieved with the adhesives in each region (Tukey; p < 0.05) revealed that TE3 (mean standard deviation: 5.22 +/- 1.70) was higher than TE2 (2.60 +/- 1.74) and SE (1.68 +/- 1.85).Conclusion: Under the experimental conditions, better bonding to dentin was achieved using the three-step etch-and-rinse system, especially in the coronal region. Therefore, the traditional etch-and-rinse three-step adhesive system seems to be the best choice for teeth needing adhesive endodontic restorations.127-133engbond strengthpush-out testcoronal dentinroot canal dentindental adhesivesArtigo10.3290/j.jad.a13331WOS:000255033200007Acesso restrito60873787346667409234456003563666