AIM To evaluate the resistance to ex vivo bacterial leakage over a 40-day period of root canal fillings with five new root canal sealers: RC Sealer, Epiphany, EndoREZ, GuttaFlow and Acroseal, compared with Apexit, AH Plus and RoekoSeal. METHODOLOGY One hundred and forty-four single rooted human teeth were divided randomly into eight test (n = 15) and two control groups (n = 12). The root cana...

To evaluate effects of different concentrations of nanosilver colloid on the cell culture of Sertoli cells, the proportion of lipid peroxidation, antioxidant capacity, nitric oxide (NO) production and genes expression of superoxide dismutases (SOD1 and SOD2) and nitric oxide synthases (eNOS and iNOS) were measured. Sertoli cells were incubated at concentrations of 25, 75 and 125 ppm nanosilver ...

BACKGROUND It is generally accepted that antibacterial properties of Ag nanoparticles (AgNPs) are dictated by their dissolved fraction. However, dissolution-based concept alone does not fully explain the toxic potency of nanoparticulate silver compared to silver ions. METHODOLOGY/PRINCIPAL FINDINGS Herein, we demonstrated that the direct contact between bacterial cell and AgNPs' surface enhan...

Nanoparticles have the advantage of a superior surface area to volume ratio, and thus such materials are useful for enzyme immobilization. A silver nanoparticle coated cotton fabric (AgNp-CF) is used immobilize camel liver catalase in present work. The effect loading levels AgNp inside fabrics on immobilization was investigated. results revealed that 6 mL level precursor (silver nitrate, 2 mM) ...

The objective of this research is to study antibacterial and antistatic properties polyamide yarn which coated silver nanoparticles carboxymethylstarch (CMS). Silver were synthesized by a green synthesis method onto (PA) fibers. presence nanosilver yarns was confirmed scanning electron microscope (SEM), UV–visible spectra (UV-Vis) X-ray diffraction (XRD) techniques. concentration deposited on t...

Materials and method Silver nanoparticles have gained more attention owing to their broad spectrum of antibacterial activity and low cost of manufacturing. In the present study, starch coated silver nanoparticle were synthesized and characterized by SEM/ EDX and UV/Vis spectroscopy. Starch coated nanosilver was tested for their antibacterial activity against various microorganisms that are comm...

Nanosilver, comprising silver nanoparticles, is attracting interest for a range of biomedical applications owing to its potent antibacterial activity. It has recently been demonstrated that nanosilver has useful anti-inflammatory effects and improves wound healing, which could be exploited in developing better dressings for wounds and burns. The teratogenicity potential for intraperitoneally do...

The antibacterial properties of nanosilver have led to a versatile application spectrum including medical purposes and personal care products. However, the increasing use of nanosilver has raised concerns about its environmental impacts. Long-term exposure studies with aquatic invertebrates are essential to assess possible adverse effects on aquatic ecosystems. In the present study, acute (48 h...

Regarding fast development of the nanotechnology and its diverse applications, is very important having enough data on the probably its side effects on the aquatic body organs. Therefore, these studies investigate the effects of nanosilver administration on histology of gill and kidney biochemical parameters in rainbow trout. For this study, the silver nanoparticles were synthesized in a one-st...