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Clinical Oral Investigations
Published in: Clinical Oral Investigations 3/2018

01-04-2018 | Original Article

Effect of different endodontic sealers and time of cementation on push-out bond strength of fiber posts

Authors: Danielle Araújo Vilas-Boas, Renata Grazziotin-Soares, Diego Machado Ardenghi, José Bauer, Patrícia Oliveira de Souza, George Táccio de Miranda Candeiro, Etevaldo Matos Maia-Filho, Ceci Nunes Carvalho

Published in: Clinical Oral Investigations | Issue 3/2018

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Abstract

Objectives

This study aims to evaluate the effect of different endodontic sealers (epoxy resin, eugenol, and bioceramic/calcium silicate-based) and the time of cementation (immediately or 7 days after canal obturation) on the bond strength of a fiberglass post cemented with RelyX™ ARC.

Material and methods

Eighty-four premolars were instrumented and divided into groups (n = 12) according to the sealer and the time of post cementation: Endofill (EN), Endosequence BC Sealer (BC), and AH Plus (AH) had immediately fiber post cementation; EN7, BC7, and AH7 had post cementation after 7 days; and control group (C) had fiber post cementation without endodontic sealer. Each post space of the root was cut into slices and submitted to push-out test. Failure mode was assessed. Two-way ANOVA, Tukey’s, and Dunnett’s tests were used for statistical analysis (α = 5%).

Results

The type of endodontic sealer (p < 0.001), the time of post cementation (p = 0.038), and the interaction sealer time (p = 0.002) had negative influence on bond strength of fiberglass posts cemented with RelyX™ ARC. AH promoted the highest bond strength mean values (21.20 MPa immediately and 15.54 MPa at 7 days). EN (9.75 MPa immediately and 13.15 MPa at 7 days) and BC (10.43 MPa immediately and 5.73 MPa at 7 days) had lower bond strength than AH, regardless the time of cementation.

Conclusions

AH was the best sealer to obturate the root canal when fiberglass cementation with resin-based cement is planned.

Clinical relevance

The correct choice of an endodontic sealer and the adequate time of post cementation may avoid post dislocation caused by low bond strength to dentin.
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Metadata
Title
Effect of different endodontic sealers and time of cementation on push-out bond strength of fiber posts
Authors
Danielle Araújo Vilas-Boas
Renata Grazziotin-Soares
Diego Machado Ardenghi
José Bauer
Patrícia Oliveira de Souza
George Táccio de Miranda Candeiro
Etevaldo Matos Maia-Filho
Ceci Nunes Carvalho
Publication date
01-04-2018
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 3/2018
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-017-2230-z

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