Bactericidal and sporicidal properties of benzalkonium chloride improved by ultrasound.
1971; National Institutes of Health; Volume: 2; Issue: 12 Linguagem: Inglês
Autores
Carl J. Andres, J. Cordaro, Albert C. Jerman, A. Stewart Windeler,
Tópico(s)Dental materials and restorations
ResumoAbstract : This study was conducted to determine if benzalkonium chloride (Zephiran Chloride), used in conjunction with ultrasound, provides an effective, rapid, inexpensive method of sterilization of dental instruments. Fifteen minutes of ultrasonic cleaning successfully killed all vegetative organisms recovered from oral fluids and plaque, but 30 minutes of exposure was required for complete kill in the control group. Thirty minutes of ultrasonic cleaning was sufficient to kill all spores of Clostridium sporogenes, while 30 minutes in the control solution produced no sporicidal activity. Complete kill of Bacillus subtilis spores was achieved in 70% of the experimental samples; again no sporicidal activity was observed in the control samples. Ultrasonic cleaning with distilled water had no effect on the spores. (Author)
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