PURPOSE The aim of this study was to evaluate the effect of paracetic acid (PAA) and ozone disinfection on the tensile bond strength (TBS) of silicone-based resilient liners to acrylic resins. MATERIALS AND METHODS One hundred and twenty dumbbell shaped heat-polymerized acrylic resins were prepared. From the mid segment of the specimens, 3 mm of acrylic were grinded off and separated parts we...

The photocatalytic disinfection of Escherichia coli K-12 is investigated by the natural sphalerite (NS) under different spectra, wavelengths and intensities of visible light (VL) emitted by light-emitting-diode lamp (LED). The spectrum effect of VL on disinfection efficiency is studied by using white LED, fluorescent tube (FT) and xenon lamp (XE), which indicates that the "discreted peak spectr...

Disinfection is the most essential and final treatment given to drinking water to render the water free from harmful pathogens. The most conventional and common form of disinfection involves the use of strong oxidants that have the potential to produce undesirable disinfection by-products (DBP). Therefore, many researchers have been trying to find alternative disinfection methods to reduce the ...

PURPOSE To elucidate Japanese trends for perioperative disinfection and antibiotic selection during cataract surgeries. METHODS Perioperative iodine use and antibiotic prophylaxis for cataract surgery were surveyed in eight regions in Japan by mail or through interviews from February 1 to March 1, 2014. RESULTS We surveyed 572 surgeons, of whom 386 (67%) responded. Most of the surgeons (94%...

he proposed Disinfectants/Disinfection By-products (D/DBP) Rule and the Enhanced Surface Water Treatment Rule (ESWTR) have prompted an industrywide evaluation of disinfection and treatment practices.1,2 One of the least expensive methods of limiting DBP formation is to use monochloramine instead of free chlorine to maintain a distribution system residual. Monochloramine limits free chlorine con...

The aim of this study was to evaluate alternative methods for the disinfection of toothbrushes considering that most of the previously proposed methods are expensive and cannot be easily implemented. Two-hundred toothbrushes with standardized dimensions and bristles were included in the study. The toothbrushes were divided into 20 experimental groups (n = 10), according to microorganism conside...

Virtually no prevention strategy in hospital hygiene has been the focus of such frequent controversial discussions as the role of surface disinfection. Set against that background, the Commission for Hospital Hygiene and Infection Prevention at the Robert Koch Institute founded a working group comprising members with divergent views of risk evaluation as regards the role of disinfection. This w...

Photo-excitation of certain semiconductors can lead to the production of reactive oxygen species that can inactivate microorganisms. The mechanisms involved are reviewed, along with two important applications. The first is the use of photocatalysis to enhance the solar disinfection of water. It is estimated that 750 million people do not have accessed to an improved source for drinking and many...

Masticatory function can be evaluated objectively as the capacity of an individual to fragment solid food after a fixed number of chewing cycles, the so-called masticatory performance (MP). The objective of this study was to evaluate the reliability of four different test materials (Optosil, Optocal, Zetapuls, and Perfil) and five disinfection protocols by aspersion and immersion (no disinfecti...