Bactericidal Effect of Ultraviolet Water-Sterilizer on Some Bacteria

Bactericidal effect of electrolyzed neutral water on bacteria isolated from infected root canals.

OBJECTIVE The purposes of this study were to examine the time-related changes in pH, oxidation-reduction potential, and concentration of chlorine of electrolyzed neutral water and to evaluate the bactericidal effect of electrolyzed neutral water against bacteria from infected root canals. STUDY DESIGN Various properties of electrolyzed neutral water--pH value, oxidation-reduction potential, a...

effect of oral presentation on development of l2 learners grammar

this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...

Bactericidal effect of erbium YAG laser on periodontopathic bacteria.

BACKGROUND AND OBJECTIVE Recently Erbium (Er) YAG laser has been developed for dentistry. It may be suitable for periodontal therapy. This study examined the bactericidal effect of the Er: YAG laser on periodontopathic bacteria in vitro. STUDY DESIGN/MATERIALS AND METHODS After spreading the bacterial suspension of Porphyromonas gingivalis or Actinobacillus actinomycetemcomitans on agar plate...

Legionnaires' Disease and Use of Water Dispensers With an Ultraviolet Sterilizer.

Bactericidal effects of 310 nm ultraviolet light-emitting diode irradiation on oral bacteria

BACKGROUND Ultraviolet (UV) light is used for phototherapy in dermatology, and UVB light (around 310 nm) is effective for treatment of psoriasis and atopic dermatitis. In addition, it is known that UVC light (around 265 nm) has a bactericidal effect, but little is known about the bactericidal effect of UVB light. In this study, we examined the bactericidal effects of UVB-light emitting diode (L...