Fig. 3From: Evaluation of zinc sulfate mucoadhesive formulation on recurrent aphthous stomatitis: a randomized double-blind, placebo-controlled clinical trialComparing the mean VAS score between the two groups during the study. The independent t test (ns; not significant, *P ≤ 0.05, **P ≤ 0.01, *** P ≤ 0.001)Back to article page