Dual function of EDTA with silver nanoparticles for root canal treatment-A novel modification

The chelating and antimicrobial capacity of a novel modification of 17% EDTA with silver nanoparticles (AgNPs) (EDTA-AgNPs) was evaluated in-vitro for root canal treatment (RCT). The EDTA-AgNPs solution was characterized by UV-Vis spectroscopy, ζ-potential and high-resolution transmission electron m...

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Veröffentlicht in:PloS one 2018-01, Vol.13 (1), p.e0190866-e0190866
Hauptverfasser: Martinez-Andrade, Juan M, Avalos-Borja, Miguel, Vilchis-Nestor, Alfredo R, Sanchez-Vargas, Luis O, Castro-Longoria, Ernestina
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container_title PloS one
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creator Martinez-Andrade, Juan M
Avalos-Borja, Miguel
Vilchis-Nestor, Alfredo R
Sanchez-Vargas, Luis O
Castro-Longoria, Ernestina
description The chelating and antimicrobial capacity of a novel modification of 17% EDTA with silver nanoparticles (AgNPs) (EDTA-AgNPs) was evaluated in-vitro for root canal treatment (RCT). The EDTA-AgNPs solution was characterized by UV-Vis spectroscopy, ζ-potential and high-resolution transmission electron microscopy (HRTEM). Antimicrobial capacity was evaluated against Candida albicans and Staphylococcus aureus in planktonic and biofilm cells by broth macrodilution (24 h) and XTT assays, (1, 10 and 30 min) respectively. The chelating capacity of EDTA-AgNPs was assessed indirectly (smear layer removal) and directly (demineralizing effect) in bovine dentin at two silver concentrations, 16 and 512 μg/ml at 1 and 10 minutes of exposure time. Smear layer removal was evaluated by atomic force microscopy (AFM) and scanning electron microscopy (SEM). The demineralizing effect was determined by atomic absorption spectroscopy (AAS), microhardness test (MH) and X-ray diffractometer (XRD). Synthesized AgNPs were quasi-spherical in shape with an average size of 13.09 ± 8.05 nm. 17% EDTA-AgNPs was effective to inhibit C. albicans and S. aureus in planktonic and biofilm cultures. The smear layer removal and demineralizing effect were similar between 17% EDTA-AgNPs and 17% EDTA treatments. The 17% EDTA-AgNPs solution proved to be an effective antimicrobial agent, and has a similar chelating capacity to 17% EDTA alone. These in-vitro studies strongly suggest that EDTA-AgNPs could be used for effective smear layer removal, having an antimicrobial effect at the same time during RCT.
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The EDTA-AgNPs solution was characterized by UV-Vis spectroscopy, ζ-potential and high-resolution transmission electron microscopy (HRTEM). Antimicrobial capacity was evaluated against Candida albicans and Staphylococcus aureus in planktonic and biofilm cells by broth macrodilution (24 h) and XTT assays, (1, 10 and 30 min) respectively. The chelating capacity of EDTA-AgNPs was assessed indirectly (smear layer removal) and directly (demineralizing effect) in bovine dentin at two silver concentrations, 16 and 512 μg/ml at 1 and 10 minutes of exposure time. Smear layer removal was evaluated by atomic force microscopy (AFM) and scanning electron microscopy (SEM). The demineralizing effect was determined by atomic absorption spectroscopy (AAS), microhardness test (MH) and X-ray diffractometer (XRD). Synthesized AgNPs were quasi-spherical in shape with an average size of 13.09 ± 8.05 nm. 17% EDTA-AgNPs was effective to inhibit C. albicans and S. aureus in planktonic and biofilm cultures. 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subjects Absorption spectroscopy
Acids
Antiinfectives and antibacterials
Antimicrobial agents
Atomic absorption analysis
Atomic absorption spectroscopy
Atomic beam spectroscopy
Atomic force microscopy
Bacteria
Biofilms
Biology and Life Sciences
Candida albicans
Chelation
Cultures
Demineralizing
Dentin
Edetic acid
EDTA
Electron microscopy
Endodontics
Ethylenediaminetetraacetic acids
Health aspects
Ligands
Medicine and Health Sciences
Methods
Microhardness
Microorganisms
Nanoparticles
Physical Sciences
Production capacity
Research and Analysis Methods
Root canal therapy
Root canals
Scanning electron microscopy
Silver
Silver compounds
Smear
Spectral analysis
Spectroscopy
Staphylococcus aureus
Transmission electron microscopy
title Dual function of EDTA with silver nanoparticles for root canal treatment-A novel modification
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