Demographic and clinical characteristics of the sample are presented by group in tables containing absolute and relative (%) frequencies for categorical variables and medians and interquartile ranges (Median - IQR) for quantitative variables. Between groups differences in these characteristics were assessed through Fisher's exact tests for categorical variables and Kruskal-Wallis tests for quantitative ones. The distributions of the indices of interest (Early wound healing index - EHI, Plaque index - PI, Plaque area index - PA%) were summarized through medians and IQRs.