골신장술시 반복적인 압축과 신장 방법이 골형성에 미치는 영향
The Effect of Repetitive Distraction and Compression on New Bone Formation During Distraction
윤병욱, 김여갑, 오정환,
소속 상세정보
윤병욱 ( Yoon Byong-Wook ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
김여갑 ( Kim Yeo-Gap ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
오정환 ( Oh Jung-Hwan ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
KMID : 0360120080300050407
Abstract
Purpose: The aim of the present study is to evaluate the effect of repetitive distraction and compression on new bone formation during distraction period.
Material and Methods : Sixteen healthy rabbits, weighing about 2.5kg, were used in this experiment. A unilateral mandibular osteotomy was performed in the left mandible and the distractor(Track 1 plus(R), Gebruder Martin GmbH(R), Germany) was fixed with four screws (Cross driver screw TI(R), Gebruder Martin GmbH(R), Germany). After 4 days, the mandibles were distracted at a rate of 0.6mm/day for 10 days to obtain the amount of 6mm distraction in the control group(n=4). In the experimental group A(n=6), they were distracted at a rate of 1.2mm/day for 5 days and then compression of 0.6mm length and distraction of 0.6mm per 12 hours were carried out as counter direction for 5 days, relatively. In the experimental group B(n=6), distraction of 1.2mm length and compression of 0.6mm length per 12 hours were repeated for 10 days to obtain the amount of 6mm distraction finally. The experimental animals were sacrificed at 2 and 4 weeks after surgery and block specimens were obtained. With histologic and histomorphometric analysis, we observed the histologic changes of the cells and bone formation after H-E and Masson-Trichrome staining and then, measured Bone Deposition Rate with TOMORO ScopeEye(TM) ver. 3.5(Olympus, Japan).
Results: Histologically, new bone formation was examined in all experimental groups and the control. But, the ability of bone formation of the experimental group A was somewhat better than any other groups. On the histomorphometric analysis, Bone Deposition Rate was higher in the experimental group A(50.67+/-4.36%) than in the control group(45.94+/-3.97%) and in the experimental group B(42.68+/-5.70%). These data showed significant differences statistically(p<0.05).
Conclusion: These results show that the distraction osteogenesis using repetitive compression and distraction force in the early consolidation period may be effective for new bone formation.
키워드
Distraction osteogenesis;Repetitive distraction and compression;Bone deposition rate
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