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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effectiveness of XP-Endo Finisher in the reduction of bacterial load in oval-shaped root canals

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Author(s):
Maria Cristina Carvalho [1] ; Mario Luis Zuolo [2] ; Rodrigo Arruda-Vasconcelos [3] ; Ariane Cássia Salustiano Marinho [4] ; Lidiane Mendes Louzada [5] ; Priscila Amanda Francisco [6] ; Vanessa Galego Arias Pecorari [7] ; Brenda Paula Figueiredo de Almeida Gomes [8]
Total Authors: 8
Affiliation:
[1] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[2] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[3] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[4] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[5] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[6] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[7] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[8] Universidade Estadual de Campinas – Unicamp. Piracicaba Dental School. Department of Restorative Dentistry - Brasil
Total Affiliations: 8
Document type: Journal article
Source: Brazilian Oral Research; v. 33, 2019-05-16.
Abstract

Abstract: This study investigated the effectiveness of XP-Endo Finisher (XPF) associated with XP-Endo Shaper (XPS) or Reciproc Blue (RB) files in reducing bacterial load in oval-shaped root canals (RC) during chemomechanical preparation (CMP) using 0.9% saline solution (NaCl) or 2.5% sodium hypochlorite (NaOCl). Eighty mandibular incisors with single oval-shaped RC were contaminated with Enterococcus faecalis. The teeth were randomly assigned to eight experimental groups (n = 10) according to the CMP, as follows: G1: XPS, G2: XPS + XPF, G3: RB, and G4: RB + XPF. CMP was performed with NaCl or NaOCl. The reduction of bacterial load was assessed by colony-forming unit count before (S1) and after (S2) CMP. Data normality was verified by using Shapiro-Wilk test. ANOVA, Tukey's test, and Bonferroni post-hoc test were used at a 5% significance level. Culturable bacteria were present in all S1 samples (p>0.05). All instrumentation techniques were effective in reducing bacterial load, irrespective of the irrigating solution (p < 0.05). With the use of NaCl, RB was more effective than XPS (p = 0.035). With the use of NaOCl, XPS and RB presented similar effectiveness (p = 0.779). XPF enhanced the bacterial reduction of both systems tested (p < 0.05). The use of NaOCl improved the CMP, irrespective of the instrumentation technique used (p < 0.05). In conclusion, XPS and RB files are effective in reducing bacterial levels in oval-shaped RC. The use of XPF as a method of agitation of the irrigating solution improved the cleaning efficiency of both file systems tested. Mechanical preparation performed with saline solution decreased culturable bacteria from the root canal, but antimicrobial substances such as NaOCl should be used to achieve a significantly better disinfection. (AU)

FAPESP's process: 15/23479-5 - Microbiomes and immunobiological aspects in endodontic infections
Grantee:Brenda Paula Figueiredo de Almeida Gomes
Support Opportunities: Research Projects - Thematic Grants