가토에서의 막성골 이식과 연골내 골화골 이식의 비교연구

Comparison of membranous bone graft with endochondral bone graft in rabbit

According to its origin, the bone is classified into membranous bone and endochondral bone. Clinical observation suggests that membranous bone undergoes less resorption than endochondral bone when grafted in the craniofacial region. Author grafted membranous bone block (from mandible) and endochondral bone block (from ilium) into rabbit as onlay grafts, and measured the amount of resorption in graft, and examined the specimen histologically. The obtained results are as follows: 1. Changes in volume of membranous bone graft and endochondral bone graft was statistically significant. (membranous: P＜0.05, endochondral: P＜0.01) 2. In membranous bone graft, height alone was significantly changed statistically. (P＜0.05) 3. In endochondral bone graft, length, width and height were significantly changed statistically. (length:P＜0.05, width:P＜0.01, height:P＜0.01) 4. Mean Height Decrements of membranous bone graft and endochondral bone graft at 20 week are 4±12%, 41±15% respectively. 5. Histologically, membranous bone graft was more vascularized than endochondral bone graft.