Decontamination of dental unit water systems with hydrogen peroxide

摘要: Aims: Transmission of microbial pathogens to patients from water in dental units is a concern. To reduce this risk, the decontaminating efficiency hydrogen peroxide was evaluated. Methods and Results: Three percent diluted 1 : 4 distilled (contact time 15 min) used daily disinfect waterlines pilot unit previously contaminated with Pseudomonas aeruginosa or Staphylococcus aureus. The behaviour test bacteria seen differ over time. Staph. aureus numbers slowly decreased until only low were recovered, after which levels remained stable. Ps. abatement more rapid density reached peak when circuit empty. Conclusions:Staph. treated fell 6 4 log. Significance Impact Study: Treatment be able keep number under control, as long treatment repeated daily.