Micro-CT evaluation of four final irrigation protocols on hard-tissue debris removal from mesial roots of mandibular molars containing isthmus.

Autor: de Mattos de Araujo BM; Department of Dentistry, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil., Cruz ATG; Department of Dentistry, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil., Piasecki L; Department of Periodontics & Endodontics, University at Buffalo, Buffalo, NY, USA. lucilapi@buffalo.edu., Webber M; Department of Periodontics & Endodontics, University at Buffalo, Buffalo, NY, USA., Carneiro E; Department of Dentistry, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil., Westphalen VPD; Department of Dentistry, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil., da Silva Neto UX; Department of Dentistry, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil.
Jazyk: angličtina
Zdroj: Clinical oral investigations [Clin Oral Investig] 2022 Oct; Vol. 26 (10), pp. 6121-6128. Date of Electronic Publication: 2022 Jun 02.
DOI: 10.1007/s00784-022-04561-3
Abstrakt: Objectives: To evaluate by means of microcomputed tomography (micro-CT), the efficacy of four final irrigation protocols in the removal of hard-tissue debris (HTD) in mesial roots of mandibular molars containing isthmus.
Materials and Methods: Forty standardized mesial roots of extracted mandibular molars presenting isthmus were selected. The root canals were prepared and randomly divided into 4 groups (n = 10): EA, EndoActivator (Dentsply Sirona); EC, Easy Clean (Easy Dental Equipment, Belo Horizonte, Brazil); XPF, XP-Endo Finisher (FKG Dentaire, La Chaus-de Fonds, Switzerland); and PUI, passive ultrasonic irrigation using Irrisafe tip (Satelec Acteon, Merignac, France). Each final irrigation protocol was performed in two cycles (60 s), using, respectively, 2.5% sodium hypochlorite and 17% EDTA. Micro-CT scans were obtained pre-operatory, post-preparation, and post-irrigation. The percentage of HTD reduction was calculated. Data was analyzed statistically (ANOVA and Kruskal-Wallis, significance set at 5%).
Results: The percentage of HTD reduction was greatest for the XPF group (77.92%), followed by EA (62.92%), PUI (47.48%), and EC (32.65%). Statistical differences (p < .05) were found between XPF and EC only. A significant difference (p < .05) was found between XPF and EC in all thirds and between PUI and EC in the middle third.
Conclusions: XPF, EA, and PUI were similarly effective in HTD reduction. However, none of the evaluated protocols was able to completely remove all the debris.
Clinical Relevance: Final irrigation protocols aim to clean the canal complexities that are not addressed by the shaping procedures. Micro-CT allowed to assess the removal of hard-tissue debris in the isthmus and canals of mandibular molars.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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