 Statistical Analysis The null hypothesis considered in the study was the absence of difference in the clinical parameters between the different groups. For data analysis, the statistical program was used Sigmaplot. The demographic and clinical data were compared between the groups using Students t-test. The data were first analyzed for homogeneity using the Shapiro-Wilk test, which indicated non-normal distribution. . Those presenting Shapiro-Wilk p values 0.05 were analyzed using a Friedman test for intragroup comparisons and Mann-Whitney tests for intergroup comparisons. Patients esthetics and discomfort measures using VAS were analyzed by T-tests. The frequency of sites that were scored as very good or excellent in each group by QCE analysis, the frequency of complete root coverage, BOP, and the presence or absence of plaque at the site were compared using χ2 tests. Intergroup RES comparisons were performed with a T-test. A significance level of 0.05 was adopted. 