Effect of a root dentin deproteinization protocol on self-adhesive cementation of fiber posts

  • Emanuela Gaviolli School of Dentistry, Meridional Faculty (IMED), Passo Fundo, RS, Brazil.
  • Matheus Rubens da Silva School of Dentistry, University of North Parana (UNOPAR), Londrina, PR, Brazil.
  • Alexandra Graunke School of Dentistry, Meridional Faculty (IMED), Passo Fundo, RS, Brazil.
  • Luiz Alexandre Chisini School of Dentistry, Universidade do Vale do Taquari (UNIVATES), Lajeado, RS, Brazil. https://orcid.org/0000-0002-3695-0361
  • Françoise Hélène Van de Sande School of Dentistry, Meridional Faculty (IMED), Passo Fundo, RS, Brazil. https://orcid.org/0000-0001-8239-9630
  • Rodrigo Varella de Carvalho | rodrigo.varella@gmail.com School of Dentistry, Meridional Faculty (IMED), Passo Fundo, RS, Brazil. https://orcid.org/0000-0002-2644-5820

Abstract

Aim: This study evaluated the effect of a root dentin deproteinization protocol on the bond strength of fiber post cemented with self-adhesive resin cement.

Materials and Methods: Twenty-four single-rooted teeth were randomly divided into two groups (n=12), as follows: G1 - cementation with self-adhesive resin cement RelyX U200 (3M/ESPE) according to manufacturer's instructions; G2 - treatment of root dentin with phosphoric acid at 37% for 15 s followed by sodium hypochlorite (NaOCl) at 5% for 5 minutes, and post cementation according to manufacturer's instructions. A light-emitting diode (LED) unit was used for photoactivation and after 24h at 37 °C in absolute humidity, teeth were sectioned into slices of 1 mm divided by different root thirds (cervical, middle and apical) and submitted to the push-out bond strength test. Two-criteria ANOVA was used to determine the statistical significance between groups (p<0.05).

Results: No statistical difference in bond strength between group cemented as manufacturer's instructions and group submitted to deproteinization was detected (p>0.05). As well as there was no statistical difference between the different root thirds evaluated (p>0.05).

Conclusions: The deproteinization protocol proposed was not able to improve the bond strength of self-adhesive cement to root dentin.

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Published
2020-10-26
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Original Articles
Keywords:
Collagen, dental cements, deproteinization, post technique, root canal
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How to Cite
Gaviolli, E., da Silva, M. R., Graunke, A., Chisini, L. A., Van de Sande, F. H., & Varella de Carvalho, R. (2020). Effect of a root dentin deproteinization protocol on self-adhesive cementation of fiber posts. Giornale Italiano Di Endodonzia, 34(2). https://doi.org/10.32067/GIE.2020.34.02.16