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THE EXPERIMENTAL STUDY OF EARLY IRRADIATION EFFECTS ON THE TEMPOROMANDIBULAR JOINT IN WHITE RAT

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Abstract

¹æ»ç¼± Á¶»çÈÄ ÇϾǰúµÎ, °üÀý¿Í, °üÀý¿øÆÇ¿¡¼­ ÀϾ´Â Á¶Á÷º´¸®ÇÐÀû Á¶±âº¯È­¸¦ °üÂûÇÏ
±â À§ÇØ ¹é¼­ÀÇ µÎ°æºÎ¿¡ 5Gy ¹× 10GyÀÇ ¹æ»ç¼±À» ´ÜÀÏ Á¶»çÇÑ ÈÄ 1ÀÏ, 2ÀÏ, 3ÀÏ, 5ÀÏ, 7ÀÏ,
14ÀÏ¿¡ ½ÇÇ赿¹°À» Èñ»ý½ÃÄÑ ¾Ç°üÀý Á¶Á÷Ç¥º»À» H&E Áß¿°»ö ¹× ¸é¿ª Á¶Á÷È­ÇÐÀû¹æ¹ýÀ¸·Î
¿°»öÇÑ ´ÙÀ½ ±¤ÇÐÇö¹Ì°æÀ¸·Î °Ë»öÇÏ¿© ´ÙÀ½ÀÇ °á°ú¸¦ ¾ò¾ú´Ù.
1. ±¤ÇÐÇö¹Ì°æÀû ¼Ò°ß¿¡¼­´Â 5 Gy Á¶»ç½Ã ÇϾǰúµÎ¿¡¼­´Â 5ÀϱîÁö Áõ½Ä´ë ¹× ºñ´ë´ëÀÇ
°¨¼Ò, ÆÄ°ñ¼¼Æ÷ÀÇ Áõ°¡ ¹× Á¶Ç÷¼¼Æ÷ÀÇ °¨¼Ò µîÀÌ °üÂûµÇ¾úÀ¸¸ç 7ÀÏ° Áõ½Ä´ëÀÇ »ó´ëÀû È®Àå,
Á¶Ç÷¼¼Æ÷ÀÇ Áõ°¡ ¹× ÆÄ°ñ¼¼Æ÷ È°µ¿¼º °¨¼Ò µî ȸº¹µÇ´Â ¼Ò°ßÀ» º¸¿´´Ù. 10 Gy Á¶»ç±ºÀº 5
Gy Á¶»ç±º¿¡ ºñÇØ ¹æ»ç¼± »óÇØ°¡ ´õ ÄÇÀ¸¸ç ±× ȸº¹µµ ´À¸° °ÍÀ¸·Î °üÂûµÇ¾ú´Ù.
2. °üÀý¿Í¿¡ Á¸ÀçÇÏ´Â ¿¬°ñ¼¼Æ÷ÀÇ º¯È­´Â 5-100Ç×ü¿¡ ´ëÇÑ ¹ÝÀÀ¿¡¼­ °¡Àå Àß °üÂûÇÒ ¼ö
ÀÖ¾úÀ¸¸ç ´ëÁ¶±º¿¡ ºñÇØ ¾ç¼º¹ÝÀÀÀÌ ¹Ì¾àÇÏ°Ô °¨¼ÒµÇ¾î ¹æ»ç¼± »óÇØ°¡ ÀûÀº ÆíÀ̳ª ȸº¹µµ
´À¸° °ÍÀ¸·Î °üÂûµÇ¾ú´Ù.
3. °üÀý¿øÆÇÀº ±¤ÇÐÇö¹Ì°æÀû °Ë»ö¿¡¼­ ¹æ»ç¼± »óÇØÀÇ ¼Ò°ßÀÌ º¸ÀÌÁö ¾Ê¾ÒÀ¸¸ç ¸é¿ªÁ¶Á÷È­
ÇÐÀû °Ë»ö¿¡¼­µµ ¾ç¼º¹ÝÀÀÀÌ °ÅÀÇ ³ªÅ¸³ªÁö ¾Ê¾Æ ¹æ»ç¼± °¨¼ö¼ºÀÌ ¸Å¿ì ³·Àº °ÍÀ¸·Î ³ªÅ¸³µ
´Ù.
4. ¹æ»ç¼±¿¡ ÀÇÇÑ Á¶Á÷º´¸®ÇÐÀû º¯È­¿Í ±× ȸº¹µÇ´Â ¾ç»óÀº ¸é¿ªÁ¶Á÷È­ÇÐÀû °Ë»öÀ» ÅëÇØ
º¸´Ù ´õ ±¸Ã¼ÀûÀ¸·Î °üÂûÇÒ ¼ö ÀÖ¾úÀ¸¸ç ƯÈ÷ 5 Gy Á¶»ç±º¿¡¼­´Â ¹æ»ç¼± Á¶»çÈÄ 5ÀÏ°ºÎÅÍ
5-100 Ç×ü¿¡ ´ëÇÑ ºñ´ë´ë¿¡ ÀÎÁ¢ÇÑ Áõ½Ä´ëÀÇ ¾ç¼º¹ÝÀÀ, C-4 Ç×ü¿¡ ´ëÇÑ ºñ´ë´ë¿¡ ÀÎÁ¢ÇÑ
ħ½Ä´ëÀÇ ¾ç¼º¹ÝÀÀ, Type I ±³¿øÁú¿¡ ´ëÇÑ °úµÎ¿¬°ñÇϹæ°ñÀÇ °ñ¼¼Æ÷ ¹× Á¶°ñ¼¼Æ÷ µîÀÇ ¾ç¼º
¹ÝÀÀµîÀ¸·Î ÇϾǰúµÎ ¹× °ñÁÖÀÇ È¸º¹Â¡Èĸ¦ °üÂûÇÒ ¼ö ÀÖ¾ú´Ù.
#ÃÊ·Ï#
The purpose of this study was to investigate the early effects of irradiation on the
temporomandibular joint in rats.
Male rats were singly irradiated with the dose of 5 Gy or 10 Gy to their head and
neck region by 60Co X ray.
Experimental animals were sacrificed at each of the following time intervals-1,2,3,5,7
and 14 days.
The specimens were examined with a light microscope, and treated with H&E
staining and immunohistochemical staining.
The results were as follows,
1. By light microscopic findings, proliferative and hypertrophic zone were narrowed
and hematopoietic cells were few in number at 5 days after irradiation. Repair signs
were seen at 7 days after irradiation when decrease in osteoclast, increase in
hematopoietic cells and increase of proliferative zone were noted.
The 10 Gy irradiated group showed more severe histopathologic change than the 5 Gy
group, and their repair was more slow.
2. In the S-100 antibody, positive cells were examined in the glenoid fossa. Positive
cells of irradiated group showed more slight decrease in number than the control group.
Low radiosensitivity and slow repair was noted in the glenoid foosa.
3. The interarticular disc was high radioresistant, and any histopathologic changes
were not seen in disc.
4. Repair was examined clearly with the response to the antibodies. Especially by 5
days after irradiation 5Gy group showed S-100 positive cells in hypertrophic zone next
to proliferative zone, chondroitin-4-sulfate positive cell in erosive zone next to
hypertrophic zone, type-1 collagen positive cell in subchondral bone.

Å°¿öµå

Irradiation; Early effects; Temporomandibular Joint; Immunohistochemical Study.;

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