Fig. 3From: Efficacy of (−)-epigallocatechin gallate delivered by a new-type scaler tip during scaling and root planing on chronic periodontitis: a split-mouth, randomized clinical trialMean PD, CAL gain and relative gingival recession (rGC) from baseline gingival margin changing over time. a sites treated with SRP plus EGCG and b sites treated with SRP alone (*p < 0.05, between-groups comparison with Student’s t test)Back to article page