objective: previous studies have demonstrated that dental stone casts can be disinfected by replacing 10v% of required water with 5.25% sodium hypochlorite solution. this comparative study evaluated physical properties of dental stone models produced by replacing distilled water with sodium hypochlorite.   methods: in this in-vitro experimental study, a total of 45 dental stone models were prod...

Media The motility buffer (MB) contained (/l of distilled water) K2HPO4, 11.2 g; KH2PO4, 4.8 g; (NH4)2SO4, 2 g; MgS04. 7H20, 0.25 g; PVP, 1 g; and EDTA, 0.029 g.1 LuriaBertani (LB) broth contained LB (/l of distilled water) 25 g. Tryptone medium contained (/l of distilled water) tryptone, 10 g and Nacl, 5 g. Different concentrations of chemotaxis medium was prepared by adding different amounts ...

Oxidative damage is involved in age-related inflammatory reactions. The anti-oxidative effects of hydrogen-rich water suppress oxidative damage, which may aid in inhibiting age-related inflammatory reactions. We investigated the effects of drinking hydrogen-rich water on aging periodontal tissues in healthy rats. Four-month-old male Fischer 344 rats (n = 12) were divided into two groups: the ex...

Aim. This study aims to evaluate the effect of acidic food simulant and (acetic acid 3%) on the shear bond strength (SBS) and adhesive remnant index (ARI) scores of one conventional and three different self-ligating brackets with different base designs. Materials and Methods. Freshly extracted first maxillary premolars (n = 160) were embedded in resin blocks. A conventional stainless steel brac...

We describe an outbreak of Sphingomonas paucimobilis in 13 newborn infants with septicemia and septic shock. Fifteen available isolates were obtained from patients and distilled water. Pulsed field gel electrophoresis showed that there was a cross-transmission of S. paucimobilis in eleven patients but these types were not the same the isolate obtained from the distilled water. The outbreak was ...

The research on ciliates, flagelates and opalinates have been widespread by the utilization of techniques employing silver impregnation (protargol), modified by several authors. However, these are time consuming and its results are variable. The present work is a variant of the technique described by Tuffrau (1964, 1967) showing some adaptations made in our laboratory. The organisms can be pres...

PURPOSE To evaluate the best method for decontaminating tooth enamel contaminated by contact with blood before bonding orthodontic buttons. MATERIALS AND METHODS The labial surfaces of 195 bovine incisors initially received prophylaxis, followed by 37% phosphoric acid etching, adhesive application, and light polymerization. After this, the labial surfaces of all teeth were contaminated with b...

Feed deprivation is used in the layer industry to induce molting and stimulate multiple egg-laying cycles in laying hens. Unfortunately, the stress involved increases susceptibility to Salmonella enteritidis (SE), the risk of SE-positive eggs, and incidence of SE in internal organs. Leghorn hens over 50 wk of age were divided into 4 treatment groups of 12 hens each in experiment 1 and 3 treatme...

Coleus blumei x C. frederici plants, the same clone used at Princeton (3), were propagated by cuttings and grown in a growth chamber under continuous illumination by cool white fluorescent lamps and incandescent bulbs (about 1000 ft-c) at an air temperature of 25 + 1 C. The experimental plants were grown with their roots in 125-ml Erlenmeyer flasks filled with nutrient solution consisting of 1....