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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

In vitro effects of endodontic irrigants on endotoxins in root canals.

OBJECTIVE: The objective of this study was to evaluate the effects of endodontic irrigants on endotoxins in root canals. STUDY DESIGN: Ninety-eight single-root human teeth were used. Escherichia coli endotoxin was inoculated into 84 root canals. All root canals were enlarged and assigned to 7 groups (n = 14), according to solution used. Group 1 (G1): 2.5% NaOCl; G2: 5.25% NaOCl; G3: 2% chlorhexidine; G4: 0.14% calcium hydroxide; G5: polymyxin B; G6: positive control, saline solution; G7: negative control (no endotoxin). Two samplings of root canal were accomplished: immediate and after 7 days. Detoxification of endotoxin was evaluated by Limulus assay and antibody production in B-lymphocyte culture. Results were analyzed by Kruskal-Wallis/Dunn and ANOVA/Tukey. RESULTS: At the immediate and second samplings, groups G4, G5, and G7 presented the best results, significantly different from groups G1, G2, G3, and G6 (P < .05). CONCLUSIONS: Calcium hydroxide and polymyxin B detoxified endotoxin in root canals and altered properties of LPS to stimulate the antibody production by B-lymphocytes. Sodium hypochlorite and chlorhexidine did not detoxify endotoxin.[1]

References

  1. In vitro effects of endodontic irrigants on endotoxins in root canals. de Oliveira, L.D., Jorge, A.O., Carvalho, C.A., Koga-Ito, C.Y., Valera, M.C. Oral. Surg. Oral. Med. Oral. Pathol. Oral. Radiol. Endod (2007) [Pubmed]
 
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