Influence of viscosity and polymerization mode on bond strength of dual-cure resin luting agent to dentin

Authors

  • Marina Di Francescantonio Campinas State University, Piracicaba, SP
  • Thaiane Rodrigues Aguiar Campinas State University, Piracicaba, SP
  • Marcelo Tavares de Oliveira University Nove de Julho, São Paulo, SP
  • Marcelo Giannini Campinas State University, Piracicaba, SP

DOI:

https://doi.org/10.20396/bjos.v11i1.8641562

Keywords:

Dentin bonding agents, Resin cement, Bond strength, Dentin

Abstract

Aim: To evaluate the influence of the viscosity and curing mode on the bond strength of two resin cements to dentin. Methods: Eight experimental groups were formed (n = 7) according to the dual-cure resin cements (Nexus 2 - Kerr Corp. and Variolink II - Ivoclar Vivadent), curing modes (dual-cure or self-cure) and viscosities (low and high). Resin cements were applied to pre-cured composite resin discs (2 mm thick, Sinfony -3M ESPE), which were fixed to bonded dentin surfaces. The restored teeth were either light-activated (XL3000 - 3M ESPE) or allowed to self curing only. After 24 h, the teeth were both mesiodistally and buccolingually sectioned to obtain bonded beam specimens (0.8 mm2 cross-sectional area). Each specimen was tested in microtensile strength at a crosshead speed of 0.5 mm/min until failure. Results: Data (in MPa) were analyzed statistically by three-way ANOVA and Tukey’s post-hoc test (pre-set á = 0.05). No significant difference was observed between resin cements (p=0.26) and viscosities (p=0.13), however, the curing mode affected the BS within the viscosities (p=0.01). Statistically significant difference was observed for low viscosity: Nexus 2: 23.8(10.6) (dual-cure) and 16.0(5.1) (self-cure); Variolink II: 28.7(8.7) (dual-cure) and 11.9(3.0) (self-cure). Conclusions: Light activation yielded higher bond strength for the low-viscosity versions of the resin cements.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Author Biographies

Marina Di Francescantonio, Campinas State University, Piracicaba, SP

DDS, MS, PhD student, Department of Restorative Dentistry, Piracicaba School of Dentistry, Campinas State University, Piracicaba, SP

Thaiane Rodrigues Aguiar, Campinas State University, Piracicaba, SP

DDS, MS, PhD student, Department of Restorative Dentistry, Piracicaba School of Dentistry, Campinas State University, Piracicaba, SP

Marcelo Tavares de Oliveira, University Nove de Julho, São Paulo, SP

DDS, MS, PhD, Assistant Professor,Department of Operative Dentistry, University Nove de Julho, São Paulo, SP

Marcelo Giannini, Campinas State University, Piracicaba, SP

DDS, MS, PhD, Associate Professor, Department of Restorative Dentistry, Piracicaba School of Dentistry, Campinas State University, Piracicaba, SP

Published

2015-11-03

How to Cite

1.
Di Francescantonio M, Aguiar TR, Oliveira MT de, Giannini M. Influence of viscosity and polymerization mode on bond strength of dual-cure resin luting agent to dentin. Braz. J. Oral Sci. [Internet]. 2015 Nov. 3 [cited 2022 Sep. 29];11(1):76-80. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641562

Issue

Section

Article

Most read articles by the same author(s)