Smear layer removal comparing conventional irrigation, passive ultrasonic irrigation, EndoActivator System, and a new sonic device (Perfect Clean System) by scanning electron microscopy: An ex vivo study.

Autor:	Gonçalves BFA; Department of Endodontics, School of Health and Biosciences, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil., Reddy D; Advanced Standing for International Dentist Program-ASPID Program, Health Sciences Center, College of Dentistry, University of Oklahoma, Oklahoma City, Oklahoma, United States of America., Machado R; Health Sciences Center, Division of Endodontics, Department of Restorative Sciences, College of Dentistry, University of Oklahoma, Oklahoma City, Oklahoma, United States of America., Soares Júunior PC; Department of Materials Science, Polytechnical School, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil., Ignácio SA; Department of Biostatistics, School of Health and Biosciences, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil., Fernandes Couto DA; Department of Endodontics, School of Health and Biosciences, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil., Frasquetti KS; Department of Endodontics, School of Health and Biosciences, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil., Ditzel Westphalen VP; Department of Endodontics, School of Health and Biosciences, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil., Carneiro E; Department of Endodontics, School of Health and Biosciences, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil., Silva Neto UXD; Department of Endodontics, School of Health and Biosciences, Pontifical Catholic University of Paraná -PUC/PR, Curitiba, Paraná, Brazil.
Jazyk:	angličtina
Zdroj:	PloS one [PLoS One] 2024 Dec 27; Vol. 19 (12), pp. e0314940. Date of Electronic Publication: 2024 Dec 27 (Print Publication: 2024).
DOI:	10.1371/journal.pone.0314940
Abstrakt:	Aim: This study evaluated the smear layer removal provided by conventional, sonic, and ultrasonic irrigation techniques. Methodology: Forty extracted human mandibular first premolars were selected and instrumented using the ProTaper Next System files and 2.5% sodium hypochlorite. Afterward, they were divided into 4 groups (n. 10) according to the irrigation technique used to perform the final irrigation with a chelating solution (17% EDTA): conventional irrigation (CI), passive ultrasonic irrigation (PUI), EndoActivator System (EAS), and Perfect Clean System (PCS). The smear layer removal was determined through a score after evaluating scanning electron microscope images (1.000x) obtained at 1, 5, 8, and 12mm from the working length (WL). Statistical analyses were carried out by the Kruskal-Wallis and Dunn's tests with a significance level of 5% (P < 0.05). Results: All irrigation techniques were unable to promote an effective smear layer removal at 1mm from the WL in comparison with the other locations (P < .05). At 5, 8, and 12mm from the WL, no statistically significant differences were observed among CI, PUI, EAS, and PCS (P > 0.05). At 12mm from the WL, statistically significant differences were only identified after comparing PCS and CI (P < .05). Conclusion: The smear layer removal was only efficient at 5, 8, and 12 from the WL with no significant statistical differences among CI, PUI, EAS, and PCS (P > 0.05). Competing Interests: The authors have declared that no competing interests exist. (Copyright: © 2024 Gonçalves et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu