The effect of self-adhesive and self-etching resin cements on the bond strength of nonmetallic posts in different root thirds

Silva, Monica Barros daTavarez, Rudys Rodolfo de JesusAssis, Fernanda Silva deTonetto, Mateus RodriguesPorto Neto, Thiago [UNESP]Bhandi, Shilpa H.El-Mowafy, OmarPorto Neto, Sizenando de Toledo [UNESP]Bandeca, Matheus Coelho2015-12-072015-12-072015The Journal Of Contemporary Dental Practice, v. 16, n. 2, p. 147-153, 2015.1526-3711http://hdl.handle.net/11449/131209The purpose of this study was to evaluate the effect of self-adhesive and self-etching resin cements on the bond strength of nonmetallic posts in different root regions. Sixty single-rooted human teeth were decoronated, endodontically treated, post-space prepared, and divided into six groups. Glass-fiber (GF) posts (Exacto, Angelus) and fiber-reinforced composite (FRC) posts (EverStick, StickTeck) were cemented with self-adhesive resin cement (Breeze) (SA) (Pentral Clinical) and self-etching resin cement (Panavia-F) (SE) (Kuraray). Six 1-mm-thick rods were obtained from the cervical (C), middle (M), and apical (A) regions of the roots. The specimens were then subjected to microtensile testing in a special machine (BISCO; Schaumburg, IL, USA) at a crosshead speed of 0.5 mm/min. Microtensile bond strength data were analyzed with two-way ANOVA and Tukey's tests. Means (and SD) of the MPa were: GF/SA/C: 14.32 (2.84), GF/SA/M: 10.69 (2.72), GF/SA/A: 6.77 (2.17), GF/SE/C: 11.56 (4.13), GF/SE/M: 6.49 (2.54), GF/SE/A: 3.60 (1.29), FRC/SA/C: 16.89 (2.66), FRC/SA/M: 13.18 (2.19), FRC/SA/A: 8.45 (1.77), FRC/SE/C: 13.69 (3.26), FRC/SE/M: 9.58 (2.23), FRC/SE/A: 5.62 (2.12). The difference among the regions was statistically significant for all groups (p < 0.05). The self-adhesive resin cement showed better results than the self-etching resin cement when compared to each post (p < 0.05). No statistically significant differences in bond strengths of the resin cements when comparable to each post (p > 0.05). The bond strength values were significantly affected by the resin cement and the highest values were found for self-adhesive resin cement.147-153engPostResin cementBond strengthThe effect of self-adhesive and self-etching resin cements on the bond strength of nonmetallic posts in different root thirdsArtigo10.5005/jp-journals-10024-165Acesso restrito775182902188607525906807