{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T06:48:02Z","timestamp":1776322082151,"version":"3.50.1"},"reference-count":43,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2022,10,26]],"date-time":"2022-10-26T00:00:00Z","timestamp":1666742400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dentistry Journal"],"abstract":"<jats:p>Background: Obturation represents a critical step in endodontic treatment, which relies on a core material and a sealer. This study aims to evaluate the sealing ability and bond strength to the root canal walls of an epoxy resin-based sealer (AH-Plus\u00ae, Dentsply Sirona, Johnson City, TN, USA) and a bioceramic sealer (GuttaFlow Bioseal\u00ae, Colt\u00e8ne\/Whaledent, GmbH + Co. KG, Langenau, Germany). Methods: Thirty-eight maxillary anterior teeth with single roots and identical round sections were separated into two experimental groups according to the root canal sealers used, namely, G1 = AH-Plus\u00ae and G2 = GuttaFlow Bioseal\u00ae, and two control groups, specifically, G3 = the negative control and G4 = the positive control. The sealing capacity was measured by the penetration of the radioactive isotope 99mTc. For the push-out test, the compressive force test was performed in a universal machine and the force was applied by exerting pressure on the surface of the material to be tested in the apical to the coronal direction and using three test points with different diameters. Results: GuttaFlow Bioseal\u00ae exhibited superior sealing ability compared to AH-Plus\u00ae (p = 0.003). Regarding the bond strength, AH-Plus\u00ae provided higher adhesion values than GuttaFlow Bioseal\u00ae in the three sections of the tooth root (p = 0.001). Conclusions: GuttaFlow Bioseal\u00ae had significantly better sealing ability than AH-Plus\u00ae but lower adhesion values in the three zones of the root canal, with statistically significant differences between the groups. However, it is important to note that for the action of endodontic sealers to be maximized, the root-filling technique must be most appropriate.<\/jats:p>","DOI":"10.3390\/dj10110201","type":"journal-article","created":{"date-parts":[[2022,10,26]],"date-time":"2022-10-26T05:11:33Z","timestamp":1666761093000},"page":"201","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Evaluation of the Sealing Ability and Bond Strength of Two Endodontic Root Canal Sealers: An In Vitro Study"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5968-6161","authenticated-orcid":false,"given":"Manuel","family":"Marques Ferreira","sequence":"first","affiliation":[{"name":"Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7366-7557","authenticated-orcid":false,"given":"Jos\u00e9 Pedro","family":"Martinho","sequence":"additional","affiliation":[{"name":"Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"given":"In\u00eas","family":"Duarte","sequence":"additional","affiliation":[{"name":"Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"given":"Diogo","family":"Mendon\u00e7a","sequence":"additional","affiliation":[{"name":"Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"given":"Ana Catarina","family":"Craveiro","sequence":"additional","affiliation":[{"name":"Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7202-1650","authenticated-orcid":false,"given":"Maria Filomena","family":"Botelho","sequence":"additional","affiliation":[{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5759-5557","authenticated-orcid":false,"given":"Eunice","family":"Carrilho","sequence":"additional","affiliation":[{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9269-5417","authenticated-orcid":false,"given":"Carlos","family":"Miguel Marto","sequence":"additional","affiliation":[{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Experimental Pathology, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2924-7926","authenticated-orcid":false,"given":"Ana","family":"Coelho","sequence":"additional","affiliation":[{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6154-4173","authenticated-orcid":false,"given":"Anabela","family":"Paula","sequence":"additional","affiliation":[{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3914-2423","authenticated-orcid":false,"given":"Siri","family":"Paulo","sequence":"additional","affiliation":[{"name":"Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"given":"Nuno","family":"Chichorro","sequence":"additional","affiliation":[{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Nuclear Sciences Applied to Health, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4185-7871","authenticated-orcid":false,"given":"Ana Margarida","family":"Abrantes","sequence":"additional","affiliation":[{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Clinical Academic Center of Coimbra (CACC), 3000\u2013354 Coimbra, Portugal"},{"name":"Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Onco-Biology (CMAGO), Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"},{"name":"Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000\u2013354 Coimbra, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"461","DOI":"10.4103\/0972-0707.190012","article-title":"Comparison of bond strength of different endodontic sealers to root dentin: An in vitro push-out test","volume":"19","author":"Madhuri","year":"2016","journal-title":"J. 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