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- Title
INVESTIGATION OF P-CHLOROANILINE FORMATION IN THE REACTIONS BETWEEN DIFFERENT ENDODONTIC IRRIGANTS.
- Authors
Bjelović, Ljiljana Z.; Glišić, Biljana Đ.; Živković, Marija D.; Kanjevac, Tatjana V.
- Abstract
The aim of this study was to determine whether p-chloroaniline (PCA) is formed in the reactions of sodium hypochlorite (NaOCl) with final rinse chlorhexidine (CHX), QMix (combination of ethylenediaminetetraacetic acid (EDTA), CHX and detergent) and EDTA/CHX solutions by thin-layer chromatography (TLC), proton nuclear magnetic resonance (¹H NMR) and infrared (IR) spectroscopy. Commercially available 5.25% NaOCl solution was mixed with 2% CHX and QMix in 1:1 (v/v) ratio at room temperature. Furthermore, 2% CHX was associated with 17% EDTA under the same experimental conditions. The obtained solutions were evaluated qualitatively for color changing, precipitate and/or bubble formation and analyzed by TLC chromatography. The association products were investigated by spectroscopic (¹H NMR and IR) methods in order to determine whether they contain PCA. It was found that interactions between NaOCl/CHX and CHX/EDTA led to forming of brown and white precipitate. When NaOCl was mixed with QMix, an orange-brown precipitate was formed. PCA was not detected as a product of the reactions between NaOCl and final rinse solutions of CHX, QMix and EDTA/CHX association.
- Subjects
PROTON magnetic resonance; NUCLEAR magnetic resonance; ETHYLENEDIAMINETETRAACETIC acid; THIN layer chromatography; SODIUM hypochlorite; CHROMATOGRAPHIC analysis
- Publication
Kragujevac Journal of Science, 2019, Issue 41, p43
- ISSN
1450-9636
- Publication type
Academic Journal
- DOI
10.5937/kgjsci1941043b