Premium
Interaction between chlorhexidine‐impregnated gutta‐percha points and several chlorine‐containing endodontic irrigating solutions
Author(s) -
RossiFedele G.,
Doğramacı E. J.,
Steier L.,
de Figueiredo J. A. P.
Publication year - 2013
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/iej.12044
Subject(s) - chlorhexidine , dentistry , gutta percha , significant difference , medicine , chemistry , mathematics , root canal
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% Na OC l 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% Na OC l 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% Na OC l for a 2‐week period, caused the formation of a precipitate in the experimental conditions of this study.