The intra- and inter-examiner reproducibility of the measurements for each protocol was estimated using the
Intraclass Correlation Coefficient (ICC; ρ) and its confi-dence interval (95% CI), considering the absolute agreement
and two-way analysis of variance (ANOVA) model,for single and average measurements (when Pz was calculated after counting one colony and triplicate, respectively).
According to the ρ value obtained, the degree of correlation between measurements was classified according to Fermanian.3