Efficacy
of ozone on survival and permeability of oral microorganisms
Nagayoshi M, Department of Operative Dentistry and Endodontics
Fukuizumi T, Department of Oral Microbiology, Kyushu Dental
College, Kitakyushu, Japan
Kitamura C, Department of Operative Dentistry and Endodontics
Yano J, Department of Operative Dentistry and Endodontics
Terashita M, Department of Operative Dentistry and Endodontics
Nishihara T. Department of Oral Microbiology, Kyushu Dental
College, Kitakyushu, Japan |
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Efficacy of ozone on survival and permeability of oral
microorganisms. Oral Microbiol Immunol 2004: 19: 240–246.
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Key words: antimicrobial activity; dental
plaque biofilm; disinfectant; oral microorganisms; ozone
Abstract
In the present study, we examined the effect of ozonated water
on oral microorganisms and dental plaque. Almost no microorganisms
were detected after being treated with ozonated water (4 mg/l)
for 10 s. To estimate the ozonated water-treated Streptococcus
mutans, bacterial cells were stained with LIVE/DEAD BacLight
TM Bacterial Viability Kit. Fluorescence microscopic analysis
revealed that S. mutans cells were killed instantaneouslyin
ozonated water. Some breakage of ozonated water-treated S.
mutans was found byelectron microscopy. When the experimental
dental plaque was exposed to ozonated water, the number of
viable S. mutans remarkablydecreased. Ozonated water stronglyinhibited
the accumulation of experimental dental plaque in vitro. After
the dental plaque samples from human subjects were exposed
to ozonated water in vitro, almost no viable bacterial cells
were detected. These results suggest that ozonated water should
be useful in reducing the infections caused byoral microorganisms
in dental plaque.
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