Clinical Oral Investigations

, Volume 22, Issue 3, pp 1403–1409 | Cite as

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

  • 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
Original Article



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%).


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.


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.


Fiber post Push-out bond strength Sealer Resin cement Root 



The work was supported by Foundation for Research and Scientific and Technological Development of Maranhão-FAPEMA, Brazil.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

For this type of study, formal consent is not required.


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Danielle Araújo Vilas-Boas
    • 1
  • Renata Grazziotin-Soares
    • 2
  • Diego Machado Ardenghi
    • 3
  • José Bauer
    • 4
  • Patrícia Oliveira de Souza
    • 1
  • George Táccio de Miranda Candeiro
    • 5
  • Etevaldo Matos Maia-Filho
    • 1
  • Ceci Nunes Carvalho
    • 1
  1. 1.Dental School, CEUMA University (UNICEUMA)São LuísBrazil
  2. 2.Discipline of Endodontics, College of DentistryUniversity of SaskatchewanSaskatoonCanada
  3. 3.University of Saskatchewan, College of DentistrySaskatoonCanada
  4. 4.Discipline of Dental Materials, School of DentistryFederal University of Maranhão (UFMA)São LuísBrazil
  5. 5.Dental Sciences Post-graduation Program, School of DentistryUniversitary Center ChristusFortalezaBrazil

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