Results before disinfection
Immediately after clinical use and manual pre-cleaning, a CFUs count
ranging from 0 CFUs to countless CFUs(>500) was found(Table
1). In total, 16 of the 100 FEs in group 1 and 21 of the 100 FEs in
group 2(EWD) showed no contamination(i.e., 0 CFUs) before disinfection
and were excluded from additional analyses. After exclusion of the FEs
that showed no contamination, a chi-square test was performed showing no
statistically significant difference in the distribution of FEs
depending on the CFUs count before disinfection between the study
groups(p=0.72).