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CONFOCAL LASER SCANNING MICROSCOPY STUDY ON INTERFACE BONE AND TITANIUM IMPLANT COATED BY CHITOSAN

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¹Ú¿¬Ãµ/Yeun Chun Park ¾Èº´±Ù/¹Ú¿µÁÖ/ÀÌ¿ëÂù/Á¶º´¿í/Byoung Gun An/Young Joo Park/Yong Chan Lee/Byoung Wouck Cho

Abstract

°á·Ð
º» ¿¬±¸´Â ƼŸ´½ ÀÓÇÁ¶õÆ® Ç¥¸é¿¡ chitosanÀ» ÄÚÆÃÇÑ ÀÓÇÁ¶õÆ®¸¦ Åä³¢ÀÇ Àå°ñ¿¡ ½Ä¸³ÇÑÈÄ
3ÀÏ, 9ÀÏ ¹× 24ÀÏ ÈÄ¿¡ Èñ»ý½ÃÄÑ ¹æ»ç¼± ÃÔ¿µ°ú confocal laser scanning microscope(CLSM)
¸¦ ÀÌ¿ëÇÏ¿© °ñ°ú ÀÓÇÁ¶õÆ®ÀÇ °è¸é¿¡¼­ chitosanÀÌ °ñÇü¼º¿¡ ¹ÌÄ¡´Â È¿°ú¸¦ ¾Ë¾Æ º¸°íÀÚ º»
¿¬±¸¸¦ ½ÃµµÇÏ¿´´ø ¹Ù ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
¹æ»ç¼± ÃÔ¿µ °á°ú ¸ðµç ½ÇÇ豺ÀÇ °æ¿ì ÀÓÇÁ¶õÆ®¿¡ Á¢ÇÏ¿© °¨½Î°í ÀÖ´Â °æ°ñÀÇ °ñÁúÀº ±×
ÁÖÀ§ÀÇ °ñÁú°ú ¹æ»ç¼±»ó ¹× ¹æ»ç¼±Åõ°ú¼º¿¡ À־ Â÷À̸¦ º¼ ¼ö ¾ø¾úÀ¸¸ç, ÀÓÇÁ¶õÆ®ÀÇ °ñ
ÁúÀº ¼­·Î ¹ÐÁ¢ÇÏ°í ¾çÀÚÀÇ °æ°èºÎ¿¡¼­ Åõ¸í´ë, ºÒÅõ¸í´ë, °ñÈí¼ö¿Í µîÀº ã¾Æ º¼ ¼ö ¾ø¾ú
´Ù. ±×·¯³ª ½Ä¸³ ÈÄ ½Ã°£ÀÌ °æ°úÇÒ ¼ö·Ï ÀÓÇÁ¶õÆ®ÀÇ ¸ÅÀÔºÎÀÎ °ñ Ç¥Ãþ¿¡¼­ º¸¸é Á¡Á¡ Ä¡¹Ð
ÇØ Áö´Ù °á±¹ Ä¡¹Ð°ñ·Î µÈ ÇÇÁú°ñÀÌ Çü¼ºµÇ¾ú´Ù.
CLSMÀÇ ºÐ¼® °á°ú 3ÀÏÈÄ °ñ°ú ÀÓÇÁ¶õÆ® »çÀÌÀÇ °è¸éÀº chitosanÀ¸·Î ÇǺ¹µÈ Ç¥¸éÀ¸·Î ¿Ï
ÀüÈ÷ ÃæÀüµÇ¾úÀ¸¸ç, 9ÀÏ ÈÄ¿¡´Â chitosanÀ¸·Î ÇǺ¹µÈ Ç¥¸éÀÌ ¿ÏÀüÈ÷ °ñÈ­µÈ ¾ç»óÀ» º¸¿´À¸
¸ç, 24ÀÏ ÈÄ °á°ú´Â chitosanÀ¸·Î ÇǺ¹µÈ ºÎÀ§°¡ ¿ÏÀüÈ÷ ÃþÆÇ°ñ·Î ä¿öÁ® °ñ°ú ÀÓÇÁ¶õÆ® »ç
ÀÌÀÇ °è¸éÀÌ Á÷Á¢ °ñÈ­µÈ °ñÀ¯Âø »óŸ¦ º¸¿© ÁÖ°í ÀÖ¾ú´Ù. ÀÌ·¯ÇÑ ¿¬±¸ °á°ú´Â È®½ÇÇÏ°Ô
ÀÓÇÁ¶õÆ®ÀÇ Ãʱ⠾ÈÁ¤¼ºÀ» °­È­ÇÏ¿´´Ù°í ÇÒ ¼ö ÀÖÀ¸¸ç, chitosan¸·ÀÌ Ä¡±Ù¸·°ú °°Àº ¿ªÇÒÀ»
ÇϹÇÀ¸·Î½á °ñ ÁÖÀ§ÀÇ stress¸¦ °¨¼Ò½ÃÅ°°í, Ãæµ¹ ¿¡³ÊÁö¸¦ Èí¼öÇϹǷνá chitosnÀº ÀÓÇÁ¶õ
Æ® ÁÖÀ§ÀÇ °ñÀ¯Âø(sseointegration)À» À¯¹ßÇÏ´Â ÈǸ¢ÇÑ Àç·á¶ó°í »ç·áµÇ¸ç, CLSMÀ» ÀÌ¿ëÇÏ
¿© ÀÓÇÁ¶õÆ® ¸Å½ÄÈÄ ÃʱâÀÇ °è¸é »óŸ¦ Á¤È®ÇÏ°Ô ÆÇ´Ü ÇÒ ¼ö ÀÖ¾ú´Ù.
#ÃÊ·Ï#
The purpose of present study was to observe the radiographic finding and histologic
response by Confocal Laser Scanning Microscopy(CLSM) on interface of the bone and
titanium implant coated by chitosan. The tissue of rabbit tibiae to the surgical placement
titanium implant coated by chitosan was examined at 3, 9 and 24 days postoperatively.
The radiographic finding showed that surrounding bone density of implants was not
significantly different compare with the bone on 3 and 9 days group. A large amount
new bone was formed on 24 days group, the reason was osteconduction activity by
chitosan.
The CLSM analysis show that the surface coating by chitosan filled the gap between
bone and implant on 3 days group and filled by mew born on 9 days group. On 24
days group, the bone and titanium surface was filled by lamella bone. This results
indicated that this enhanced the initial stability of implant significantly and chitosan
induced osseointegration around implant.
CLSM allows the non-destrutive histo-tomography of bone biopsy as well as clinical
practice. We conclude that CLSM allowed a good comprehension of the nature of
bone-implant contact, avoiding artifacts due to the thickness of the specimen.

Å°¿öµå

confocal laser scanning microscopy; chitosan; initial stability;

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