A randomized clinical trial was conducted to investigate the effect of a 0.5% chlorhexidine (CHX) gel on dental plaque superinfecting microorganisms in mentally handicapped patients. Thirty inmates from the institution “Casas André Luiz” were assigned to either test group (CHX gel, n = 15) or control group (placebo gel, n = 15). The gel was administered over a period of 8 weeks. Supragingival p...

Silicon carbide (SiC) has been widely used in many applications, which require high mechanical endurance or electrical resistance. It also serves as a basic material for light emitting diodes. Here, we present an in-liquid plasma method to produce SiC nanoparticles. A sustained spark-discharge dielectric liquid, is energized by nanosecond pulsed power supply, established the synthesis. To provi...

Cycloheximide resistance in Tetrahymena is inducible by mutagenesis. Two mutations, isolated independently from genetically different strains, were analyzed. The two mutations, Chx-1 and Chx-2, were found to be alleles at the same locus. A specific analysis is presented which may serve as a model for strategies employing an independent manipulation of the micro-and macronuclei of this organism ...

Background and Aim: Recurrent caries and low bond strength are the main causes of composite restorations failure. This study sought to assess the effect of chlorhexidine (CHX) on micro-shear bond strength (MSBS) to dentin of a fourth generation adhesive system and a universal bonding agent after aging. Materials and Methods: This in vitro study used 32 extracted third molars and 3-5mm thick de...

An early childhood carie (ECC) is an extremely destructive form of tooth decay. The aim of this study was to investigate the action of ozone (O3), and the association of sodium fluoride (NaF) with chlorhexidine (CHX) on bacteria related to ECC. Overnight culture of the bacteria was performed. On exponential phase the suspension was adjusted (101-108 CFU/mL). A drop (10μL) of each concentration ...

Statement of the Problem There are some concerns regarding the effect of chlorhexidine (CHX) applied for cavity disinfection on the bond strength of adhesive restorations to dentin. Purpose This study sought to assess the effect of CHX on the shear bond strength (SBS) of Equia resin-modified glass ionomer cement (RMGIC) to dentin in permanent teeth. Materials and Method In this experimental...

INTRODUCTION The aim of this in vitro study was to evaluate the antimicrobial activity of four intracanal medicaments on Enterococcus Faecalis (E. Faecalis). METHODS AND MATERIALS Fifty extracted single-rooted human teeth were prepared with standard method. After contaminating the canals with E. Faecalis, the samples were divided into one control and four experimental groups (n=10). The teeth...

This study evaluated the effect of a 2% chlorhexidine-based disinfectant (CHX) on the short-term resin-dentin bond strength of a self-etch adhesive system to human dentin with different mineral contents. Dentinal mineralization was tested at 4 levels (sound, and after 2, 4, or 8 days of demineralization-remineralization cycles) and disinfectant at 2 levels [deionized water (DW, negative control...

INTRODUCTION The aim of this study was to evaluate the antimicrobial effect of Eucalyptusgalbie and Myrtus communis L. methanolic extracts, chlorhexidine (CHX) and sodium hypochlorite (NaOCl) on Enterococcus faecalis (E. faecalis) as the predominant species isolated from infected root canals. METHODS AND MATERIALS One hundred twenty mandibular premolars were randomly divided into 8 groups: Eu...

UNLABELLED Dry socket (DS) is a potential postoperative complication of dental extractions. It is clinically diagnosed by the presence of a denuded socket secondary to premature loss of the blood clot, and manifests as slight discomfort for the patient, followed by sudden worsening with intense or lancing pain. Since the underlying etiology is not clear, the best treatment is prevention. Chlorh...