Moderate heating of waterline improves dental unit water quality by activating bactericidal properties of tap water.

ABSTRACT:

Background/purpose

Daily flushing of dental unit waterlines (DUWLs) with fresh tap water for an adequate duration each morning before dental procedures is essential to prevent healthcare-associated infections. However, the bacterial reduction achieved by flushing alone is often temporary and may be insufficient. The purpose of this study was to evaluate the management practices of clinically used DUWLs and identify effective measures for improving water quality.

Materials and methods

The bactericidal free residual chlorine concentration (FRCC) and heterotrophic plate counts (HPCs) in air turbine handpiece DUWLs with or without chemical disinfectants and/or heating apparatus were evaluated before and after flushing, based on legal standards and target values for water quality

SUBMITTER: Fushimi K 

PROVIDER: S-EPMC12825499 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature