Influence of Er,Cr: YSGG laser on bond strength of self-adhesive resin cement

Materials Research

Matheus Coelho Bandéca²  Shelon Cristina Souza Pinto¹  Luiz Rafael Calixto¹  José Roberto Cury Saad¹  Érico Luiz Damasceno Barros²  Amr Shelb¹ 

[1] ,Centre Universitary of Maranhão Department of Dentistry São Luís MA ,Brazil

关键词: Er;    Cr:YSGG laser;    root canal dentin;    push-out bond strength;    fiber post;    resin cement;   

DOI  :  10.1590/S1516-14392012005000060

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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