Fig. 3

Microphotograph of the bony defect of group I (control group) (A, D) at two weeks filled with granulation tissue. No bony tissue is observed at the center of the bony defect (*). Microphotograph of the bony defect of group II (micro-dentin group) (B, E) and of the bony defect of group III (nano-dentin group) (C, F) showing graft material (arrow heads) with new bone formation (black arrows) at the defect margins that extends toward the defect center. (H&E, orig. mag., A, B, C × 40 & D, E, F × 100)