Sodium Hypochlorite Stress in Enterococcus faecalis : Influence of Antecedent Growth Conditions and Induced Proteins

1997 ◽  
Vol 34 (5) ◽  
pp. 284-289 ◽  
Author(s):  
Jean-Marie Laplace ◽  
Magalie Thuault ◽  
Axel Hartke ◽  
Philippe Boutibonnes ◽  
Yanick Auffray
Keyword(s):  
Enterococcus Faecalis ◽  
Sodium Hypochlorite ◽  
Growth Conditions ◽  
Induced Proteins

Comparative evaluation of disinfection mechanism of sodium hypochlorite, chlorine dioxide and electroactivated water on Enterococcus faecalis

LWT ◽  
2019 ◽  
Vol 102 ◽  
pp. 205-213 ◽  
Author(s):  
Zeynep Girgin Ersoy ◽  
Ozge Dinc ◽  
Buse Cinar ◽  
Sedef Tunca Gedik ◽  
Anatoli Dimoglo
Keyword(s):  
Enterococcus Faecalis ◽  
Sodium Hypochlorite ◽  
Chlorine Dioxide ◽  
Comparative Evaluation

scholarly journals Impact of two disinfectants on detachment of Enterococcus faecalis from polythene in aquatic microcosm

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
C. Lontsi Djimeli ◽  
A. Tamsa Arfao ◽  
V Rossi ◽  
N Nsulem ◽  
V Raspal ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Cell Adhesion ◽  
Enterococcus Faecalis ◽  
Sodium Hypochlorite ◽  
Growth Phases ◽  
Planktonic Cells ◽  
Stationary Growth ◽  
Experimental Conditions ◽  
The Impact ◽  
Aquatic Microcosm

<p><strong>After cell adhesion processes in microcosm, the impact of sodium hypochlorite (NaOCl) and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) on the detachment of <em>Enterococcus faecalis </em>from polythene fragments immersed in water under stationary and dynamic conditions was assessed. The abundance of planktonic cells was also evaluated. The density of <em>E. faecalis</em> adhered in absence of disinfectant fluctuated between 2 and 4 units (Log CFU/cm<sup>2</sup>). </strong><strong>After living in disinfected water, </strong><strong>the density of <em>E. faecalis</em> remained adhered to polythene sometimes reached 2 units (Log CFU/Cm<sup>2</sup>)</strong><strong>. </strong><strong>This highest abundance of cells remained adhered was recorded with cells coming from the lag, exponential and stationary growth phases in water treated with 0.5‰ NaOCl. In H<sub>2</sub>O<sub>2</sub> disinfected water, the highest value was recorded at all cells growth phases with 5‰ H<sub>2</sub>O<sub>2 </sub>concentration. Adhered <em>E. faecalis</em> cells have been sometimes completely or partially decimated respectively by NaOCl and H<sub>2</sub>O<sub>2</sub> treated water. Considering separately each experimental condition, it was noted that increasing the concentration of disinfectant caused a significant decrease (P≤0.01) in abundance of cells stay adhered after living in water disinfected by the two disinfectants. Changes in disinfectant concentrations in different experimental conditions had an impact on the detachment of <em>E. faecalis</em> cells from the substrates. </strong></p>

scholarly journals Antibacterial Effects of Erbium Chromium Laser along with/without Silver Nanoparticles in Root Canals Infected by Enterococcus faecalis

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Seyedeh Sareh Hendi ◽  
Negin Amiri ◽  
Banafsheh Poormoradi ◽  
Mohammad Yousef Alikhani ◽  
Saeid Afshar ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Enterococcus Faecalis ◽  
Sodium Hypochlorite ◽  
Silver Nanoparticle ◽  
Colony Count ◽  
Antibacterial Effects ◽  
Bacterial Colony ◽  
Root Canals ◽  
Significant Difference ◽  
Root Canal System

This study investigates the antibacterial effects of erbium chromium laser at 2780 nm, silver nanoparticles, and erbium chromium along with silver nanoparticles on Enterococcus faecalis in comparison with sodium hypochlorite. In the present study, 90 extracted human single-rooted teeth were selected and standardized to a length of 15 mm. The canals were prepared by V-taper Gold rotary files and then incubated with E. faecalis for 21 days. The samples were divided into four experimental groups including hypochlorite sodium, silver nanoparticle, erbium chromium laser, and erbium chromium laser along with silver nanoparticle groups. Results showed that there was a significant reduction in colony count for all groups after interventions. Moreover, there was a significant reduction in the colony count for sodium hypochlorite group in comparison with another groups, and this group showed the highest reduction of colony count. There was a significant difference between silver nanoparticles and erbium chromium laser groups in colony count. According to the results, the silver nanoparticles offered strong antibacterial effects on E. faecalis and therefore can decrease bacterial colonies, while the use of the laser, despite the reduction of the bacterial colony, could not be sufficiently used for disinfection of root canal system.

scholarly journals Role of extracellular DNA in Enterococcus faecalis biofilm formation and its susceptibility to sodium hypochlorite

2019 ◽  
Vol 27 ◽  
Author(s):  
Mi-Kyung YU ◽  
Mi-Ah KIM ◽  
Vinicius ROSA ◽  
Yun-Chan HWANG ◽  
Massimo DEL FABBRO ◽  
...  
Keyword(s):  
Enterococcus Faecalis ◽  
Sodium Hypochlorite ◽  
Biofilm Formation ◽  
Extracellular Dna
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