The efficacy of disinfectants in the decontamination of dental unit water lines: an laboratory study.

Objectives/aims: This laboratory study compared the efficacy of water, sodium percarbonate (SPC) and chlorine dioxide (ClO) solutions in the disinfection of dental unit water lines (DUWLs).

Materials And Methods: New DUWL tubes were cut, split open, and mono-culture and mixed-culture biofilms of , and were grown. Harvested biofilms from the sectioned DUWL tubes were exposed to sterile distilled water, SPC or 5 and 10 p.