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dc.creatorEstrela, Carlos-
dc.creatorSousa Neto, Manoel Damião de-
dc.creatorAlves, Denise Ramos Silveira-
dc.creatorAlencar, Ana Helena Gonçalves de-
dc.creatorSantos, Tatiane Oliveira-
dc.creatorPécora, Jesus Djalma-
dc.identifier.citationESTRELA, Carlos et al. A preliminary study of the antibacterial potential of cetylpyridinium chloride in root canals infected by E. faecalis. Brazilian Dental Journal, Ribeirão Preto, v. 23, n. 6, p. 645-653, 2012.pt_BR
dc.identifier.issne- 1806-4760-
dc.description.abstractThe aim of this preliminary study was to verify the antibacterial potential of cetylpyridinium chloride (CPC) in root canals infected by Enterococcus faecalis. Forty human maxillary anterior teeth were prepared and inoculated with E. faecalis for 60 days. The teeth were randomly assigned to the following groups: 1: Root canal preparation (RCP) + 0.1% CPC with positive-pressure irrigation (PPI, Conventional, NaviTip ® ); 2: RCP + 0.2% CPC PPI; 3: RCP + 2.5% NaOCl PPI; 4: RCP + 2.5% NaOCl with negative-pressure irrigation system (NPI, EndoVac ® ); 5: Positive control; and 6: Negative control. Four teeth of each experimental group were evaluated by culture and 4 by scanning electron microscopy (SEM). In all teeth, the root canals were dried and filled with 17% EDTA (pH 7.2) for 3 min for smear layer removal. Samples from the infected root canals were collected and immersed in 7 mL of Letheen Broth (LB), followed by incubation at 37°C for 48 h. Bacterial growth was analyzed by turbidity of culture medium and then observed with a UV spectrophotometer. The irrigating solutions were further evaluated for antimicrobial effect by an agar diffusion test. The statistical data were treated by means, standard deviation, Kruskal-Wallis test and analysis of variance. Significance level was set at 5%. The results showed the presence of E. faecalis after root canal sanitization. The number of bacteria decreased after the use of CPC. In the agar diffusion test, CPC induced large microbial inhibition zones, similar to 2% chlorhexidine and large than 2.5% NaOCl. In conclusion, cetylpyridinium chloride showed antibacterial potential in endodontic infection with E. faecalis.pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectCetylpyridinium chloridept_BR
dc.subjectE. faecalispt_BR
dc.subjectSodium hypochloritept_BR
dc.subjectQuaternary ammoniumpt_BR
dc.titleA preliminary study of the antibacterial potential of cetylpyridinium chloride in root canals infected by E. faecalispt_BR
dc.publisher.departmentFaculdade de Odontologia - FO (RG)pt_BR
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