Fig. (12) Histomorphometric analysis of the central and buccal sections (480 μm away from center) at 4 weeks after surgery (N = 9, mean ± standard deviation). (A) Area of bone. (B) Length of periodontal ligament-like tissue. (C) Length of cementum-like tissue. (D) Length of epithelial tissue. Ctrl, Col, and FGF indicate control, collagen hydrogel scaffold, and FGF2-loaded collagen hydrogel scaffold, respectively. * P < 0.05.