Fig. 4

Microphotograph of the bony defect of group I (control group) at 4 weeks with fine trabeculae of woven bone covering areas of the center of the defect (*) (A, D). In group II (micro-dentin) remnants of the graft material (arrow heads) is still evident with new bone trabeculae (black arrows) extending toward the center of the defect (B, E). In group III (C, F) the newly formed bone trabeculae form a bridge which closed the defect surface (NB), osteoclasts (yellow arrows) presence indicated remodelling of the old bone surface. Resting lines (red arrows) were evident denoting the successive increments of bone formation and reversal lines (white arrow). (H&E, orig. mag., A, B, C × 40 & D, E, F × 100)