Correlation between the expression of miR-155 and miR-146a in the saliva of patients and the clinical indexes of periodontitis. Analysis of the correlation between the expression of miR-155 in the saliva of patients with periodontitis and PLI. A: The expression of miR-155 in the saliva of patients with periodontitis was positively correlated with PLI (r=0.748, P<0.001). Analysis of the correlation between the expression of miR-155 in the saliva of patients with periodontitis and PD. B: The expression of miR-155 in the saliva of patients with periodontitis was positively correlated with PD (r=0.846, P<0.001). Analysis of the correlation between the expression of miR-155 in the saliva of patients with periodontitis and AL. C: The expression of miR-155 in the saliva of patients with periodontitis was positively correlated with AL (r=0.667, P<0.001). Analysis of the correlation between the expression of miR-155 in the saliva of patients with periodontitis and GI. D: The expression of miR-155 in the saliva of patients with periodontitis was positively correlated with GI (r=0.617, P<0.001). Analysis of the correlation between the expression of miR-146a in the saliva of patients with periodontitis and PLI. E: The expression of miR-146a in the saliva of patients with periodontitis was positively correlated with PLI (r=0.864, P<0.001). Analysis of the correlation between the expression of miR-146a in the saliva of patients with periodontitis and PD. F: The expression of miR-146a in the saliva of patients with periodontitis was positively correlated with PD (r=0.798, P<0.001). Analysis of the correlation between the expression of miR-146a in the saliva of patients with periodontitis and AL. G: The expression ofmiR-146a in the saliva of patients with periodontitis was positively correlated with AL (r=0.641, P<0.001). Analysis of correlation between the expression of miR-146a in the saliva of patients with periodontitis and GI. H: The expression of miR-146a in the saliva of patients with periodontitis was positively correlated with GI (r=0.610, P<0.001).