Purge- and intensive-purge decontamination of dental units contaminated with biofilm

Axel Kramer, Ojan Assadian, Danny Bachfeld & Georg Meyer
Introduction: During hygienic-microbiological monitoring of the water quality in dental units, the total bacterial colony count was found to exceed the limits for drinking water quality; in addition, mold contamination was detected. The presumed cause was irregular decontamination of the units through purging and intensive decontamination. Methods: To decontaminate the units, the manufacturer’s recommended program for cleaning and intensive decontamination was intensified by shortened intervals over a 2-week period. For Sirona units, instead of once...