OBJECTIVES The effects of chlorine dioxide (ClO2), sodium hypochlorite (NaOCl), and hydrogen peroxide (H2O2) on cell death and the cell cycle of human gingival fibroblast (HGF) cells were examined. METHODS The inhibition of HGF cell growth was evaluated using a Cell Counting Kit-8. The cell cycle was assessed with propidium iodide-stained cells (distribution of cells in G0/G1, S, and G2/M pha...

Aim: Contaminated dental unit water lines (DUWLs) are a possible source for spreading microorganisms in practices. The aim of this study was to detect the bacterial contamination and investigate effectiveness disinfectants.
 Methodology: Bacterial detected by a) using culture heterotrophic bacteria, total coliforms Pseudomonas aeruginosa b) Scanning electron microscopy (SEM) DUWLs tube. Su...

In this study we evaluated the activity of ABR preparation, a first-in-class agent obtained through fermentation process by genetically unmodified Bacillus spp., in breaking down polysaccharide produced by Streptococcus mutans, primary coloniser of tooth surface and abundant in dental biofilms. Our results showed that ABR preparation is able in degrading sugars formed by S. mutans, both in brot...

During impressions, bacteria, viruses, and fungi remain on the impression material, representing a significant risk for medical team (dentists, dental assistants, laboratory technicians). Impression disinfectants have been introduced into dentistry to reduce of cross-infection. This study was performed by examining surface disinfection five commonly used materials in prosthodontics: alginate-Tr...

Background: One of the major causes of increasing nosocomial infections is misusing disinfectants and antiseptics in hospitals. The aim of this study was to evaluate the efficacy of disinfectants and antiseptics using in injections and dressing wards, operation rooms and kitchen of Hamedan hospitals. Materials and Methods: In this study 742 samples were collected before and after disinfect...

The correct usage of disinfectants is an important component of a successful biosecurity program. The objective of this study was to determine the effect of time, temperature, and organic matter (OM) on disinfectant efficacy. Staphylococcus aureus and Salmonella Typhimurium were used to represent gram-negative and gram-positive bacteria commonly found in commercial poultry housing. The first st...

BACKGROUND The spread of antibiotic-resistant pathogens represents an increasing threat in healthcare facilities. Concern has been expressed that the use of surface disinfectants and antiseptics may select for antibiotic-resistant pathogens. OBJECTIVE To review the scientific literature on whether there is a link between use of germicides (ie, disinfectants and antiseptics) and bacterial resi...

BACKGROUND In light of the uncertainty surrounding the incidence of bisphosphonate-associated osteonecrosis of the jaw (BON) and concomitant risk factors, dentists have questioned how to manage the care of patients receiving oral bisphosphonate therapy. Expert panelists were selected by the American Dental Association Council on Scientific Affairs on the basis of their expertise in the relevant...