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Electron Microscopic Study of Osseointegration between Bone and Smooth Machined Implants  

Chang, Byung-Soo (Department of Cosmetology, Hanseo University)
Publication Information
Applied Microscopy / v.34, no.4, 2004 , pp. 277-283 More about this Journal
Abstract
This paper reports that the ultrastructural nature of the interface process between the implants and surrounding bone has been studied after in vivo 1, 4, 8, 12 weeks of implantation of smooth machined implants into rabbit tibias. There was no indication of the fibrous connective tissue formation around the implant that imply intolerance of the bone tissue towards the implant after 1 week of implantation. The regions showing direct bone tissue bonding to the smooth machined implant contained osteoblast activating across the interface in the direction after 4 weeks of implantation. The reaction of a smooth machined implant caused in the first instance formation of an amorphous woven bone, which transformed into a mineralized bone containing collagen fibers. After 8 weeks of implantation, the activities of osteoblast initiated osseointegration forming bone matrix at the interface. During this period, the osteoblast surrounded with a matrix consisting of collagen bundles running in various directions. In the interface area between newly formed bone tissue and implants which has been inserted in rabbit tibias for 12 weeks, the implant and mineralized bone was separated by an amorphous electron dense material layer about $1{\sim}1.5{\mu}m$ in thickness.
Keywords
Bone; Implant; Osseointegration; Osteoblast;
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