Herrera-Ocampo LA, Montero-Aguilar M, Alfaro-Mayorga E

Language: Spanish
References: 0
Page: 61-70
PDF size: 175.67 Kb.

ABSTRACT

The purpose of this study was to determine the effect of different surface treatments on the bond strength between resin cements and quartz fiber-reinforced resin posts. Materials and methods: Sixty quartz fiber-reinforced resin posts (DT Light-Post^™, Bisco^™) were randomly divided into 12 experimental groups (n=5), according to the resin cement used (Biscem^™ or Duolink^™) and the surface treatment: Alcohol (control group), silanized, primer, sandblasted, sandblasted + silanized or sandblasted + primer. Cylindrical resin specimens were obtained using nanohybrid resin. The posts were cemented to the resin discs and push-out tests were conducted. Data were analyzed with ANOVA and T test for averages comparison and the Tukey HSD test with a 95% level of significance. Results: Biscem^™ cement generally showed higher bond strength when compared to Duolink^™ Significant differences were found between the control group and the sandblasted + silane and sandblasted + primer groups when using Duolink^™cement. With Biscem^™ cement, no differences between groups or with the control group were found.. Conclusion: Surface treatments on quartz fiber-reinforced resin poles seem to have no significant effect on the bond strength to resin cements, except when using Duolink^™ cement with sandblasted posts and using silane or primer.