<原著>歯科用器材の消毒液の継続使用とその有効性に関する研究

概要

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The possibility of the running use and the decrease of effect of N-osban solution containing 0.2% of benzalkonium chloride and 0.5% of sodium nitrite were examined for rational usage of a disinfectant for dental instruments in our hospital. The number of viable organisms and the amount of the effective disinfectant in N-osban solution used continuously for 5 days in regular practice were determined by the method of the modified "in use test" and the minimum inhibitory concentration (MIC) using the strain of Staphylococcus aureus 209P, respectively. Even in N-osban solution used most frequently for 5 days, no viable cells were detected and its MIC decreased most frequently at 3 days use. Therefore, making allowance for a safety mergin, the term of running use of N-osban solution was established as 2 days. To confirm the reliability of this,the number of viable cells of N-osban solution used continuously for 2 days at the dental offices of the conservative dentistry, prosthetic dentistry, and pedodontics were measured. No viable bacteria in these N-osban solutions were detected. From the results, it was confirmed that this term was quite adequate for use under clinical circumstances.
北海道医療大学の論文
1988-06-30