INTRODUCTION The aims of this study were to evaluate dentin debris removal from the root canal during ultrasonic activation of sodium hypochlorite (2% and 10%), carbonated water, and distilled water and to determine the influence of 3 ultrasonic refreshment/activation cycles of the irrigant by using the intermittent flush technique. METHODS Root canals with a standardized groove in 1 canal wa...

The present works were carried out to determine the impact of different municipal solid waste compost (mswc) soil extracts (Tap water, 5%, 10%, 15%, 20%, 25%, 30% and distilled water (control) obtained from mswc (degraded soil) and different mixing ratio of mswc and distilled water on the percentage of relative seed germination (RSG%), vigor index, root length, shoot length of soya bean (Glycin...

To study the origin of chloroform in vegetables, a simple and sensitive method was established using a gas chromatograph equipped with an electron capture detector. The method includes solvent trapping of chloroform, and gas chromatographic separation with a detection system. The average concentrations in vegetables, tea leaves and frozen vegetables were 30.9, 62.9 and 15.7 μ/kg, respectively. ...

Materials and Methods: The subjects were 36 systemically healthy, non-smoking patients (34-66 years old). All patients presented moderate-to-advanced chronic periodontitis and had at least 5 teeth and 2 pocket sites with probing depth ≥ 5 mm in each quadrant and bone loss. Then, they were randomly distributed to 3 different groups. 1. conventional quadrant-wise mechanical debridement (QMD): sup...

This study was made to determine the effectiveness of the preservation of plant-pathogenic bacteria in sterile distilled water. After 20 or 24 years of storage in distilled water, a very high percentage (90 to 92%) of the isolates of Agrobacterium tumefaciens and Pseudomonas spp. were still alive. Moreover, 12 of 13 viable (after 24 years) isolates of P. syringae subsp. syringae maintained thei...