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Influence of the final irrigation solution on the push-out bond strength of calcium silicate-based, epoxy resin-based and silicone-based endodontic sealers

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Abstract

The aim was to evaluate the influence of different irrigation solutions on the push-out bond strength (POBS) of three different sealers (AH Plus, BioRoot RCS, GuttaFlow2). Root canals of 180 single-rooted human teeth were instrumented with F360 up to size 45.04. All canals were irrigated with 5 ml NaOCl 3% and 5 ml EDTA 17%. The canals were finally irrigated with either 5 ml NaOCl 3%, CHX 2%, EDTA 17%, citric acid 20% or NaCl 0.9% (n = 36) with a contact time of 5 min and obturated using matching gutta-percha cones according to the single-cone technique in combination with one of the sealers (n = 12). After 8 weeks of incubation, the roots were embedded in resin. Two slices of 1 mm thickness were obtained representing the middle third of the root. Dislodgement resistance was measured and POBS was calculated. Specimens were examined under 4× magnification to determine the mode of bond failure. Statistical analysis was performed using two-way ANOVA and Student–Newman–Keuls test for POBS and Chi-square test for the mode of failure. POBS was significantly affected by the factor “sealer” (P < 0.001) and by the interaction “sealer/irrigation solution” (P < 0.01). AH Plus revealed significantly higher POBS than BioRoot RCS and GuttaFlow2 (P < 0.05). The POBS of GutttaFlow2 was not affected by the irrigation protocol (P > 0.05). The POBS of AH Plus was positively influenced by EDTA and NaOCl. EDTA had a negative effect on the POBS of BioRoot RCS. The POBS of GuttaFlow2 was not influenced by the irrigation solutions.

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Authors and Affiliations

  1. Department of Periodontology and Operative Dentistry, Westphalian Wilhelms-University, Albert-Schweitzer-Campus 1, Building W 30, 48149, Münster, Germany

    David Donnermeyer, Noushin Vahdat-Pajouh & Till Dammaschke

  2. Central Interdisciplinary Ambulance in the School of Dentistry, Albert-Schweitzer-Campus 1, Building W 30, 48149, Münster, Germany

    Edgar Schäfer

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  1. David Donnermeyer
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  2. Noushin Vahdat-Pajouh
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  3. Edgar Schäfer
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  4. Till Dammaschke
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Correspondence to David Donnermeyer.

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Donnermeyer, D., Vahdat-Pajouh, N., Schäfer, E. et al. Influence of the final irrigation solution on the push-out bond strength of calcium silicate-based, epoxy resin-based and silicone-based endodontic sealers. Odontology 107, 231–236 (2019). https://doi.org/10.1007/s10266-018-0392-z

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  • DOI: https://doi.org/10.1007/s10266-018-0392-z

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