Multiple approaches to control dental unit water line biofilm contamination

Biofilms form rapidly on dental unit waterlines. The specific design of dental units favors bacteria to colonize surfaces and to form biofilm in water supply tubes, including dental unit water line (DUWL). The majority of the organisms in the biofilm are harmless environmental species, but some dental units may harbour opportunistic respiratory pathogens. Microbiological control of dental unit waterline biofilm is extremely significant for patients and dental personnel. Based on the latest scientific literature, this study presents the ways of reducing/controlling microbial contamination of dental treatment water biofilm. The use of disinfectants, flushing and quorum sensing inhibitors are described. Further research to evaluate effectiveness, convenience on a day-to-day basis and economic aspects of various methods is required.