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In vitro testing of a denture cleaning method using ozone.

M Oizumi1, T Suzuki, M Uchida

  • 1Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University, Japan. m.oizumi.gero@dent.tmd.ac.jp

Journal of Medical and Dental Sciences
|February 24, 2001
PubMed
Summary

Gaseous ozone rapidly disinfects dentures, significantly reducing oral microorganisms like Streptococcus mutans and Candida albicans within minutes. This method is more effective than ozonated water for denture disinfection.

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Area of Science:

  • Microbiology
  • Dental hygiene
  • Ozone therapy

Background:

  • Limited research exists on ozone's microbicidal effects on oral microorganisms.
  • Ozone is known for its bactericidal properties, but its application in denture disinfection requires further investigation.

Purpose of the Study:

  • To compare the microbicidal efficacy of gaseous ozone versus ozonated water for denture disinfection.
  • To evaluate the potential clinical usefulness of gaseous ozone in oral hygiene.

Main Methods:

  • Tested the microbicidal effects of gaseous ozone and ozonated water on Streptococcus mutans, Staphylococcus aureus, and Candida albicans.
  • Quantified microbial reduction over time for both disinfection methods.

Main Results:

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  • Gaseous ozone reduced all tested microbial strains by 1/10(5) within 1 minute, with levels below detection by 3 minutes.
  • Ozonated water (1-3 ppm) showed a lesser effect, reducing Candida albicans by only 1/10.
  • Gaseous ozone generation required significantly less ozone output (20 mg/h) compared to ozonated water (700 mg/h for 1 ppm).

Conclusions:

  • Direct exposure to gaseous ozone is a more effective microbicide than ozonated water for oral microorganisms.
  • Gaseous ozone presents a promising and efficient method for clinical denture disinfection.