Passive ultrasonic irrigation, EndoActivator system and XP-endo Finisher R as additional cleaning techniques to remove residual filling materials from flattened root canals.

Autor:	Baumeier NC; Department of Endodontics, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil., Húngaro Duarte MA; Department of Operative Dentistry, Endodontics and Dental Materials, Baurú School of Dentistry, University of São Paulo, Baurú, São Paulo, Brazil., Vivan RR; Department of Operative Dentistry, Endodontics and Dental Materials, Baurú School of Dentistry, University of São Paulo, Baurú, São Paulo, Brazil., Lemos AC; Department of Operative Dentistry, Endodontics and Dental Materials, Baurú School of Dentistry, University of São Paulo, Baurú, São Paulo, Brazil., Machado R; Clinical Practice Limited to Endodontics, Navegantes, Santa Catarina, Brazil., da Silva Neto UX; Department of Endodontics, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of conservative dentistry : JCD [J Conserv Dent] 2022 Jul-Aug; Vol. 25 (4), pp. 385-391. Date of Electronic Publication: 2022 Aug 02.
DOI:	10.4103/jcd.jcd_117_22
Abstrakt:	Background: The effectiveness of endodontic retreatment essentially depends on the cleaning and/or disinfection processes. In this context, the removal of root canal filling materials plays a crucial role. Aims: To assess the efficacy of passive ultrasonic irrigation (PUI), EndoActivator system (EAS), and XP-endo Finisher R (XPEFR) as additional cleaning techniques to remove the remaining root canal filling materials from flattened root canals. Subjects and Methods: Thirty-six similar flattened distal root canals of extracted human first lower molars were selected by micro-computed tomography (micro-CT) and then instrumented and filled. After the initial retreatment procedures, the residual volume of root canal filling materials was assessed by micro-CT (V1). Then, the specimens were divided into three groups (n. 12), according to the additional cleaning technique and submitted to another micro-CT scan (V2). Statistical Analysis Used: Analysis of variance and Games-Howell tests ( P < 0.05). Results: The percentage reduction in the residual volume of root canal filling materials reached by PUI, EAS, and XPEFR was 28.38%, 28.12%, and 43.52%, respectively, considering the total space of the root canal ( P > 0.05). In the apical third, these values were 20.05%, 21.54%, and 48.82% ( P < 0.05). Conclusions: Additional cleaning techniques enabled removing a greater amount of root canal filling material from flattened distal root canals of extracted human first lower molars. Considering the total space of the root canal, there were no statistically relevant differences among the groups. In the apical third, XPEFR performed better. Competing Interests: There are no conflicts of interest. (Copyright: © 2022 Journal of Conservative Dentistry.)
Databáze:	MEDLINE
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