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Comparative Study
. 2018 Aug 20;14(1):13.
doi: 10.1186/s13005-018-0170-8.

The push-out bond strength of calcium silicate-based endodontic sealers

David Donnermeyer  1 , Pia Dornseifer  2 , Edgar Schäfer  3 , Till Dammaschke  2
Affiliations
Comparative Study

The push-out bond strength of calcium silicate-based endodontic sealers

David Donnermeyer et al. Head Face Med. .

Abstract

Background: The aim was to compare the dislodgement resistance of calcium silicate-based sealers (Total Fill BC Sealer, Endo CPM Sealer, BioRoot RCS) with an epoxy resin-based sealer (AH Plus).

Methods: The root canals of 80 single-rooted human teeth were instrumented with F360 up to size 45.04. All canals were obturated using matching gutta-percha cones according to the single-cone technique in combination with one of the mentioned sealers (n = 20 per group). After eight weeks of incubation (37 °C, 100% humidity), the roots were embedded in resin. Starting with a distance of 7 mm from the apex, four slices of 1 mm thickness were cut. Dislodgement resistance was measured using a universal testing machine and the push-out bond strength was calculated. Specimens were examined under 4×-magnification to determine the mode of bond failure. Statistical analysis was performed using ANOVA and Student-Newman-Keuls-test.

Results: Regarding the pooled data of all sections, the push-out bond strength of AH Plus was significantly higher than the push-out bond strength of all calcium silicate-containing sealers (P < 0.05). Out of all calcium silicate-based sealers, Total Fill BC Sealer showed the highest push-out bond strength (P < 0.05). BioRoot RCS had significant higher push-out bond strength than Endo CPM Sealer (P < 0.05). Nearly the same results were found for all four sections. BioRoot RCS only differed significantly from Endo CPM Sealer in the third section (P < 0.05).

Conclusions: The push-out bond strength of the investigated calcium silicate-based sealers was lower than of AH Plus. Total Fill BC showed the highest push-out bond strength of the calcium silicate-based sealers.

Keywords: BioRoot RCS; Calcium silicate-based sealer; Endo CPM sealer; Epoxy resin sealer; Push-out bond strength; Total fill BC sealer.

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Conflict of interest statement

Ethics approval and consent to participate

Not applicable.

Consent for publication

Not applicable.

Competing interests

We acknowledge support by Open Access Publication Fund of University of Muenster. The authors declare that they have no competing interests.

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Figures

Fig. 1
Fig. 1
Images obtained by laser microscopy at 4×-magnification for analysis of the mode of failure; examples for adhesive (a), cohesive (b) and mixed (c) failure types are given
Fig. 2
Fig. 2
Distribution of failure modes (in %)
See this image and copyright information in PMC

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