In this experiment 24 rabbits were studied. The mandibular defects of 10mm×5mm, were created in both sides between tugomaxillary mulcle and mental foramen. The periosteukm was kept in the right side but was cut off in the left. The rabbits were feed- ed for 8 weeks after surgery. The osteogenic process was observed by gross: X-ray, histopathologic methods. It is found that the osteogenic precess was not oisible in the left side. Our findings suggest that: (1) mandibular periosteal osteogensis is a general law; (2) osteogenesis fulfils in the intramembranous osiffication; (3) osteogenesis begins as early as 7 days after surgery; (4) a lot of the blood vesseles form in the periosteal osteogenic prosses; (5) the bone formation starts in small loci of active osteoblasts.
Journal of Taishan Medical College