Bond strength of resin cements to novel materials to intracanal posts applications

Authors

  • Lígia Gabrielle Sanches Mariotto Department of Dental Materials and Prosthesis – School of Dentistry of Ribeirão Preto – University of São Paulo – Ribeirão Preto – SP – Brazil.
  • Carla Larissa Vidal Department of Dental Materials and Prosthesis – School of Dentistry of Ribeirão Preto – University of São Paulo – Ribeirão Preto – SP – Brazil.
  • Denise Tornavoi de Castro Department of Biomaterials – School of Dentistry of Uberaba – Uberaba – MG – Brazil.
  • Alma Blásida Concepcion Elizaur Benitez Catirse Department of Dental Materials and Prosthesis – School of Dentistry of Ribeirão Preto – University of São Paulo – Ribeirão Preto – SP – Brazil.
  • Rossana Pereira de Almeida Department of Dental Materials and Prosthesis – School of Dentistry of Ribeirão Preto – University of São Paulo – Ribeirão Preto – SP – Brazil.
  • Andréa Cândido dos Reis Department of Dental Materials and Prosthesis – School of Dentistry of Ribeirão Preto – University of São Paulo – Ribeirão Preto – SP – Brazil.

DOI:

https://doi.org/10.14295/bds.2018.v21i4.1639

Abstract

Objective: evaluate the bond strength of resin cements to new materials for application in intraradicular posts. Material and Methods: Five materials were evaluated: fiberglass, PET, polyethylene, polyacetal and PTFE. Two commercial resin cements (Rely X U200 and Rely X Arc) were applied on the test specimens of the materials (9x3mm) and the bonding was evaluated through the shear bond strength test, where the chisel operated with a load of 1kN and a velocity of 0.5mm/min at the cement/material interface. The data were analyzed by the Shapiro-Wilk test, followed by the two-way analysis of variance, performed with the Bonferroni post-test (?=0.05). Results: The glass fiber was statistically different from all evaluated materials (p<0.05). There was no statistically significant difference between the other materials (p>0.05). Comparing the two cements, a statistical difference was found between Rely X U200 and Arc only for the glass fiber (p=0). Conclusion: PET, polyethylene, polyacetal and PTFE exhibited reduced bond strength compared to the glass fiber.

Keywords

Resin cement; PET polymer; Polytetrafluoroethylene.

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Published

2018-10-24

Issue

Vol. 21 No. 4 (2018): Oct. - Dec. / 2018 - Published October 2018

Section

Clinical or Laboratorial Research