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THE INVESTIGATION OF MICROVASCULATURE CHANGES IN OSSEOUS REGENERATION BY CHIDED TISSUE REGENERATION PROCEDURE

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Abstract

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Ç÷°ü¸ÁÀ» ³ªÅ¸³»¾ú´Ù. ½Ã°£ÀÌ °æ°úµÇ¸é¼­ Àç»ýµÈ °á¼ÕºÎÀÇ °ñÀº À籸¼ºµÇ¸é¼­ ´ëÁ¶±º°ú ½Ç
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ÀÇÇØ Çü¼ºµÈ ±ÔÄ¢ÀûÀÎ Ç÷°ü¸ÁÀÌ ¿¬Á¶Á÷À¸·ÎºÎÅÍ Ä§ÀÔÇÑ Ç÷°ü¿¡ ÀÇÇØ ±× ±ÔÄ¢ÀûÀÎ ¹è¿­ÀÌ Èå
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¹ÐÁ¢ÇÑ °ü·ÃÀÌ ÀÖÀ½À» º¸¿©ÁÖ´Â °ÍÀÌ´Ù.

To investigate the sequential changes in microvascular architecture and osseous
regeneration during the bony healing after an application of the guided tissue
regeneration method, we made artificial defects measuring 0.7§¯¡¿0.3§¯ in size on
femoral bones of rats measuring about 200gm and applied non-absorbable TEFE
membrane at experimental sites but not at control sites. Then we observed the
sequential changes and correlations between new vasculation and bony regeneration
using microvascular corrosion cast method and routine light microscopic observation at
1, 2 and 3 weeks after operation, respectively.
The results showed that there were close relationships between regeneration of
microvasculature and bone. In early phase, the invasion of granulation tissue at control
sites delayed bony regeneration, however, in later phase, there was no remarkanble
differences in bony regeneration between control and experimental sites. The placement
of barrier also affected in revascularization of regenerating bony defects. This is the
experimental sites showed parallel arranged nutritional vessels along long axis with well
developed retiform plexus whereas the control revealed vertical invasion of
microvasculature from outside of marrow space through bony defects which was also
rearrange with time into parallel pattern with a vertical plexus but lesser organized than
that of experimental sites. These findings suggest that the reconstruction of regenerating
vasculature within the marrow cavity only may be sufficient and/or more be efficient in
regeneration of bony deflects.

Å°¿öµå

Microvasculature; Guided bone regeneration; Corrosion casting method;

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