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The Effect of Low Intensity Ultrasound on Osteoblast Activation  

홍성민 (경희대학교 동서의학대학원 의료공학 전공)
한승무 (경희대학교 동서의학대학원 의료공학 전)
한은옥 (이화여자대학교 보건교육학)
임사비나 (경희대학교 한의과대학 경혈학교)
김창주 (경희대학교 의과대학 생리학교실)
Publication Information
Journal of Biomedical Engineering Research / v.25, no.3, 2004 , pp. 201-206 More about this Journal
Abstract
The bone formation and re-formation are regulated by two factors that are the synthesis of bone matrix by osteoblast and reabsorption by osteoclast. Recently, there are many studies about regeneration and healing of bone tissue by activation of osteoblast. In general, it is known that the activation of osteoblast is influenced by not only biological stimulus but physical stimulus. In this study, we verified that ostoeblast activation was influenced by low intensity ultrasound. Various ultrasonic properties were used to find out the most appropriate condition on cell activation. From this study, we could confirm that 0.3W/$\textrm{cm}^2$ intensity of ultrasound was the most appropriate to tell activation over whole duty cycles and the increasing rate of tell was the highest at 50% duty cycle. Thus, it is expected that optimal ultrasonic characteristics on regeneration of bone matrix may be applied to fracture and osteoporosis healing.
Keywords
Low intensity ultrasound; Osteoblast; Cell activation;
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