Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

¹æ»ç¼±Á¶»ç°¡ ¹é¼­ ¹ý¶ûÁúÇü¼º °úÁ¤¿¡ ¹ÌÄ¡´Â ¿µÇâ¿¡ °üÇÑ ¿¬±¸

RADIATION EFFECT ON THE STAGES OF AMELOGENESIS IN THE RAT INCISOR

Ä¡°ú¹æ»ç¼± 1997³â 27±Ç 1È£ p.203 ~ 216
ÃÖÇö¹è, À̽¿ì, ±è¼ö¿ë, Á¤¼ºÃ¢,
¼Ò¼Ó »ó¼¼Á¤º¸
ÃÖÇö¹è (  ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¹æ»ç¼±ÇÐ
À̽¿ì (  ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¹æ»ç¼±ÇÐ
±è¼ö¿ë (  ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¹æ»ç¼±ÇÐ
Á¤¼ºÃ¢ (  ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¹æ»ç¼±ÇÐ

Abstract

Å»ý±â 19ÀÏ°¿¡ ¹æ»ç¼±À» Á¶»ç¹ÞÀº »ýÈÄ 11ÀÏµÈ ¹é¼­ 20¸¶¸®´Â ½ÇÇ豺À¸·Î, ¹æ»ç¼±À» Á¶
»ç ¹ÞÁö ¾ÊÀº »ýÈÄ 11ÀÏµÈ ¹é¼­ 20¸¶¸®´Â ´ëÁ¶±ºÀ¸·Î ÇÏ¿© ±¤ÇÐÇö¹Ì°æ»ó¿¡¼­ ÀüºÐºñ´ë, ºÐ
ºñ´ë, ¼º¼÷´ëÀÇ ¼¼Æ÷ ÇüŸ¦ °üÂûÇÏ°í °¢ ´ëÀÇ ±æÀ̸¦ ÃøÁ¤ÇÏ¿© ºñ±³ÇÏ¿´À¸¸ç Åõ°úÀüÀÚÇö¹Ì
°æÀ¸·Î °¢ ´ëÀÇ ¹ý¶û¸ð¼¼Æ÷ÀÇ ¹Ì¼¼ ÇüÅ º¯È­¸¦ °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ÀüºÐºñ´ë ±æÀÌÁß Ä¡¼ö¿¡ Á¢ÇÑ ºÎÀ§´Â 314§­¿¡¼­ 350§­·Î 11.5% Áõ°¡ÇÏ¿´°í(P<0.05) »ó
¾ÆÁú¿¡ Á¢ÇÑ ºÎÀ§´Â 542§­¿¡¼­ 638§­·Î 17.7% Áõ°¡ÇÏ¿´´Ù(P<0.01).
2. ºÐºñ´ëÀÇ ±æÀÌ´Â 2090§­¿¡¼­ 2452§­·Î 17.3% Áõ°¡ÇÏ¿´À¸³ª(P<0.01) ¼º¼÷´ëÀÇ ±æÀÌ´Â
4471§­¿¡¼­ 3788§­·Î 15.3 % °¨¼ÒÇÏ¿´´Ù(P<0.01).
3. ¹ý¶ûÁúÇü¼º °úÁ¤ÀÇ Àüü ±æÀÌ´Â ´ëÁ¶±ºÀÌ 7417§­, ½ÇÇ豺ÀÌ 7228§­·Î À¯ÀÇÇÑ Â÷À̸¦ º¸
ÀÌÁö ¾Ê¾Ò´Ù(P>0.05).
4. ¹æ»ç¼±Á¶»ç½Ã ÀüºÐºñ´ë, ºÐºñ´ë, ¼º¼÷´ë ¸ðµÎ¿¡¼­ ¼¼Æ÷¸·, Á¶¸é¼¼Æ÷³»ÇüÁú¼¼¸Á, »ç¸³Ã¼,
ÇÙ¸·ÀÇ È®´ë°¡ °üÂûµÇ¾úÀ¸¸ç ƯÈ÷ ¼º¼÷´ë¿¡¼­ º¯È­°¡ ½ÉÇÏ¿´´Ù.
#ÃÊ·Ï#
The purpose of this study was to investigate the radiation effect on the stages of
amelogenesis. Twenty 11-day-old rats which were irradiated by 4Gy of gamma
radiation on the 19th prenatal day were used for the experimental group and twenty
11-day-old rats which were not irradiated were used for the control group. The length
of each zone of amelogenesis were measured on the sagittal section using a light
microscopic enlargement at 400 x the normal view while the morphologic changes of
ameloblasts of each zone were observed electron-microscopically.
The obtained results were as followed :
1. The length of the region of facing pulp and facing dentin of the zone of
presecretion were increased by 11.5%(P<0.05) and 17.7%(P<0.01), respectively.
2. The length of the zone of secretion was increased by 17.3%(P<0.01), but the zone
of maturation was decreased by 15.3%(P<0.01).
3. The total length of the zone of amelogenesis was not changed significantly(P>0.05).
4. Electron-microscopically, enlargement of the cell membrane, rER, mitochondria, and
nuclear membrane were observed. These changes were mostly severe in the zone of
maturation.

Å°¿öµå

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

  

µîÀçÀú³Î Á¤º¸