Fig. 2From: Randomized controlled trial on the effectiveness of absorbable collagen sponge after extraction of impacted mandibular third molar: split-mouth designA comparison of the VAS scores for the sides that received a sponge and those that didn’t. The results are shown as the mean (SE). * indicates P < 0.05 between collagen sponge insertion versus control. Abbreviations; T1, 1 week post-operatively; T2, 2 weeks post-operatively; T3, 14 weeks post-operatively.Back to article page