In this study, polyvinylidene fluoride (PVDF) flat membranes were treated with potassium hydroxide (KOH), sodium hydroxide (NaOH) and sodium hypochlorite (NaOCl). The effects of temperature, treatment duration and chemical concentration towards the properties of PVDF membrane were contrastively studied. Following treatment, membrane became much brittle with a reduced nominal elongation to as lo...

AIMS Bacillithiol (BSH) is the major low-molecular-weight thiol of the human pathogen Staphylococcus aureus. In this study, we used OxICAT and Voronoi redox treemaps to quantify hypochlorite-sensitive protein thiols in S. aureus USA300 and analyzed the role of BSH in protein S-bacillithiolation. RESULTS The OxICAT analyses enabled the quantification of 228 Cys residues in the redox proteome o...

BACKGROUND To determine the antibacterial effect of photodynamic Therapy on Enterococcus faecalis (E. faecalis) biofilms in experimentally infected human root canals in primary infections and endodontic retreatments. METHODS One hundred and sixty single-rooted extracted teeth with one root canal were prepared using ProTaper instruments. Seventy specimens were left without root canal filling a...

This study evaluated the in vitro antibacterial activity of conventional and experimental endodontic irrigants against Enterococcus faecalis. The following substances were evaluated by direct contact test: 2.5% sodium hypochlorite (NaOCl); 2% chlorhexidine (CHX); 1% peracetic acid. After different contact periods (30 s, 1, 3, and 10 min), a neutralizing agent was applied. Serial 10-fold dilutio...

INTRODUCTION The purpose of this in vitro study was to assess the antifungal activity of final canal rinse with either three concentrations of sodium hypochlorite (NaOCl) (0.5, 2.6 and 6%), two concentrations of chlorhexidine (CHX) (2% and 0.2%), MTAD, Tetraclean, Hypoclean and Chlor-Xtra on Candida albicans (C. albicans) in a human tooth model. METHODS AND MATERIALS Two hundred and thirty fi...

OBJECTIVE This study tested the hypothesis that the use of ethylenediamine tetraacetic acid (EDTA) as a final irrigant causes canal wall erosion only after prolonged use of 5.25% sodium hypochlorite (NaOCl) as the initial irrigant. METHODS Two irrigation protocols were employed: (1) 5.25% NaOCl as the initial irrigant for 10 min and 17% EDTA as the final irrigant for 2 min; and (2) 5.25% NaOC...

The purpose of this study was to evaluate the effect of sodium hypochlorite (NaOCl) treatment on dentin bonding by means of contact angle (CA), shear bond strength (SBS), and microleakage (ML) measurements. Ultrastructure and nanoleakage (NL) of the interfaces were examined by transmission electron microscopy (TEM). For CA, SBS, and TEM evaluation, human molars were sectioned to expose dentin s...

The aim of this study was to evaluate the cleaning capacity of Profile .04 files combined with different irrigating solutions in flattened root canals using histological, morphometrical and SEM analyses. Eighty human mandibular incisors were prepared with Profile .04 instruments and randomly divided into 4 groups according to the irrigating solutions used (n=20): G1: distilled water (control); ...

Introduction: Historically, countless compounds in aqueous solution have been suggested as root canal irrigants. MTAD shows promise as an endodontic irrigant but there are very few studies comparing its antimicrobial effectiveness with NaOCl and Chlorhexidine. Objectives: To compare the antibacterial efficiency of MTAD, 2.5% Sodium Hypochlorite and 2% Chlorhexidine root canal irrigants against ...

i ntroduction: the aim of the present study was to evaluate whether adding 2% chlorhexidine (chx) and 2.6% sodium hypochlorite (naocl) to calcium-enriched mixture (cem) cement would affect its setting time (st), or not. methods and materials: in this study, the setting time of cem cement was evaluated in three groups ( n =9) as follows: group 1; cem cement, group 2; cem cement+2% chx and group ...