Fig. 2From: Clinical outcome of periodontal regenerative therapy using collagen membrane and deproteinized bovine bone mineral: a 2.5-year follow-up studyChange in PD (a) and GR (b). Data shown as mean ± SD (n = 10). **P < 0.01, ***P < 0.001, compared to baseline, by ANOVA with Tukey–Kramer multiple comparisons test. PD probing depth, GR gingival recessionBack to article page