Fig. 3

Histologic analysis on the experimental and control groups. a At 4 weeks, newly formed bone volume was similar between the groups, but remaining graft volume was higher in no membrane group than osteoguide membrane group. b At 8 weeks, there was no significantly difference of newly formed bone and remaining graft volumes between the groups. * Krustal-Wallis Test is significant at the 0.05 level (2-tailed)