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Type: Journal article
Title: Interaction between chlorhexidine-impregnated gutta-percha points and several chlorine-containing endodontic irrigating solutions
Author: Rossi-Fedele, G.
Doǧramaci, E.
Steier, L.
de Figueiredo, J.
Citation: International Endodontic Journal, 2013; 46(7):675-680
Publisher: Wiley-Blackwell
Issue Date: 2013
ISSN: 0143-2885
Statement of
G. Rossi-Fedele, E. J. Doğramacı, L. Steier, andJ. A. P. de Figueiredo
Abstract: AIM: To evaluate if the immersion of chlorhexidine-impregnated gutta-percha points in chlorine-containing endodontic irrigants causes colour changes and precipitate formation. METHODOLOGY: Eighty-one size 25 chlorhexidine medicated (Activ Points, Roeko, Langenau, Germany) and 27 size 25 standard gutta-percha points (Roeko) were immersed in microtubes, containing the following solutions: 0.5 and 5.25% NaOCl or Aquatine (Optident, Ilkley, UK). The samples were visually assessed, by two independent observers, at regular intervals over 3 weeks, to detect colour changes and precipitate formation. A score system was used to grade the precipitate intensity. To compare the number of days required for a precipitate to form mean and standard differences were calculated; the means between the groups were compared using a one-way analysis of variance test. Mean intensity scores were calculated and compared between groups using Kruskal-Wallis procedure followed by the Mann-Whitney test. RESULTS: The groups containing 5.25% NaOCl started to produce a visible precipitate after fourteen days (16.48 ± 0.98) for the Activ points; this process was first noticed with the standard gutta-percha group on day 17 (18.33 ± 1.22 days), with a statistically significant difference (P = 0.002). When looking at the intensity scores from day 17 onwards, these two groups differed statistically, with a greater amount for the AP group (P < 0.001). No other test group presented with changes. CONCLUSION: The placement of impregnated gutta-percha points, in 5.25% NaOCl for a 2-week period, caused the formation of a precipitate in the experimental conditions of this study.
Keywords: chlorhexidine; chlorhexidine medicated gutta-percha point; electrochemically activated solution; interaction; sodium hypochlorite; super-oxidized water
Rights: © 2013 International Endodontic Journal
DOI: 10.1111/iej.12044
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