Otro
Influence of Er,Cr: YSGG laser on bond strength of self-adhesive resin cement
Registro en:
Materials Research. ABM, ABC, ABPol, v. 15, n. 4, p. 491-494, 2012.
1516-1439
10.1590/S1516-14392012005000060
S1516-14392012000400001
S1516-14392012000400001.pdf
Autor
Bandeca, Matheus Coelho
Pinto, Shelon Cristina Souza
Calixto, Luiz Rafael
Saad, José Roberto Cury
Barros, Érico Luiz Damasceno
Shelb, Amr
Resumen
The purpose of this study was to investigate the bond strength of fiber post previously laser treated root canals. Forty single-rooted bovine teeth were endodontically treated, randomly and equally divided into two main groups according to the type of pretreatment: G1: 2.5% NaOCl (control group); and G2: Er,Cr:YSGG laser. Each group was further subdivided into 2 groups based on the category of adhesive systems/ luting materials used: a: an etch-and-rinse resin cement (Single Bond/RelyX ARC; 3M ESPE), and b: a self-adhesive resin cement (Rely X Unicem; 3M ESPE). Three 1.5 mm thick slabs were obtained per root and the push-out test was performed at a crosshead speed of 0.5 mm/min until post dislodgement occurred. Data were analyzed by ANOVA and post-hoc Tukey's test at a pre-set alpha of 0.05. Analysis of variance showed no statistically significant difference (p > 0.05) among the groups G1a (25.44 ± 2.35) and G1b (23.62 ± 3.48), G2a (11.77 ± 2.67) and G2b (9.93 ± 3.37). Fractures were observed at the interface between the dentin and the resin in all groups. The Er,Cr:YSGG laser irradiation did not influence on the bond strength of the resin cements and the etch-and-rinse resin cement had better results on bond strength than self-adhesive resin cement.