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A STUDY ON THE EFFECTS OF THE GALLIUM-ARSENIDE LASER IRRADIATION OF THE MECHANICALLY EXPOSED PULP OF DOG

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Abstract

°á·Ð
ÀúÀÚ´Â ÀúÃâ·Â ·¹ÀÌÀú Á¶»ç°¡ ³ëÃâ Ä¡¼öÀÇ Ä¡À¯¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ±Ô¸íÇϱâ À§ÇÏ¿© ¼º°ßÀÇ
Ä¡¾Æ¿¡ 5±Þ ¿Íµ¿À» Çü¼ºÇÑ ÈÄ ±â°èÀûÀ¸·Î Ä¡¼ö¸¦ ³ëÃâ½ÃŲ ´ÙÀ½ ´ëÁ¶±ºÀÇ °æ¿ì,
DycalRÀ» µµÆ÷ÇÏ°í IRMR »ç¿ëÇÏ¿© ¿Íµ¿À» ¹ÐºÀÇÏ¿´À¸¸ç,
Ga-As(Gallium-Arsenide)¸¦ ¸Åü·Î ÇÑ ÀúÃâ·Â ·¹ÀÌÀúÀÎ Dens-Bio laser (Dong Yang
Medical Co., Korea)¸¦ ÀÌ¿ëÇÏ¿© ½ÇÇè ¥°±º°ú ¥±±ºÀº ÀúÃâ·Â ·¹ÀÌÀú¸¦ °¢°¢ 2ºÐ°ú 4ºÐ°£ Á¶
»çÇÑ ÈÄ DycalRÀ» µµÆ÷ ÇÏ¿´À¸¸ç, ½ÇÇè ¥²±º°ú ¥³±ºÀº ÀúÃâ·Â ·¹ÀÌÀú¸¸ °¢°¢
2ºÐ°ú 4ºÐ°£ Á¶»çÇÑ ÈÄ ¼Òµ¶µÈ aluminum foil·Î ³ëÃâµÈ Ä¡¼öºÎÀ§¸¦ µ¤°í,
IRMRÀ» »ç¿ëÇÏ¿© ¿Íµ¿À» ¹ÐºÀÇÏ¿´´Ù.
½ÇÇèÀÌ ³¡³­ ÈÄ 1ÁÖ, 3ÁÖ, 5ÁÖ °£°ÝÀ¸·Î ½ÇÇè µ¿¹°À» Èñ»ý½ÃÄÑ Ç¥º»À» Á¦ÀÛÇÑ ÈÄ ±¤ÇÐÇö¹Ì
°æÀ¸·Î Ä¡¼öÀÇ º¯È­¸¦ °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. »ó¾ÆÁú±³ÀÇ Çü¼ºÀº, ´ëÁ¶±º¿¡ ºñÇØ 1, 3, 5 ÁÖ ¸ðµÎ¿¡ °ÉÃÄ ½ÇÇè ¥°¡¤¥±±º¿¡¼­ °¡Àå ºü
¸£°í ±¤¹üÀ§ÇÏ°Ô Çü¼ºµÇ¾úÀ¸¸ç, ´ëÁ¶±º°ú ½ÇÇè ¥²¡¤¥³±º »çÀÌ¿¡¼­´Â Á¶Á÷ÇÐÀûÀΠƯÀÌ ¼Ò°ß
ÀÌ °üÂûµÇÁö ¾Ê¾Ò´Ù.
2. Ä¡¼öÀý´ÜºÎÀ§ÀÇ Á¶»ó¾Æ¼¼Æ÷ È°¼ºµµ´Â ´ëÁ¶±º¿¡ ºñÇØ 1, 3, 5ÁÖ ¸ðµÎ¿¡ °ÉÃÄ ½ÇÇè ¥°¡¤
¥± ±º¿¡¼­ Áõ°¡µÇ¾ú°í, ´ëÁ¶±º°ú ½ÇÇè ¥²¡¤¥³±º »çÀÌ¿¡¼­´Â Á¶Á÷ÇÐÀûÀΠƯÀ̼ҰßÀÌ °ü ÂûµÇ
Áö ¾Ê¾Ò´Ù.
3. Ä¡¼öÀÇ ¿°Áõ »óÅ´ °¢±º ¸ðµÎ 1ÁÖ¿¡ ½ÉÇÑ ¿°Áõ ¹ÝÀÀÀ» º¸¿´À¸³ª ½Ã°£ÀÌ °æ°úµÊ¿¡ µû
¶ó °¨¼ÒµÇ¾úÀ¸¸ç, ´ëÁ¶±º¿¡ ºñÇØ ½ÇÇè ¥°¡¤¥±±º¿¡¼­ ÇöÀúÈ÷ °¨¼ÒµÇ¾úÀ¸¸ç, ´ëÁ¶±º°ú ½ÇÇ豺
»çÀÌ¿¡¼­´Â Á¶Á÷ÇÐÀûÀΠƯÀÌ ¼Ò°ßÀÌ °üÂûµÇÁö ¾Ê¾Ò´Ù.
4. ¸ðµç ½ÇÇ豺¿¡¼­ ·¹ÀÌÀú Á¶»ç½Ã°£ÀÇ Â÷ÀÌ¿¡ µû¸¥ Ä¡¼öÁ¶Á÷ÀÇ ¹ÝÀÀ¿¡´Â Á¶Á÷ÇÐÀûÀΠƯ
ÀÌ ¼Ò°ßÀÌ °üÂûµÇÁö ¾Ê¾Ò´Ù.
#ÃÊ·Ï#
The purpose of this study was to investigate the effects of Gallium-Arsenide lasers
irradiation on the mechanically exposed pulp of dog.
The anterior and posterior teeth of three dogs, weighting 10§¸, were used in this study.
Class V cavities on dog's teeth were prepared and the pulps were mechanically exposed.
In control group, exposed pulps were capped with DycalR and cavities
were sealed with IRMR.
In experimental group ¥° and ¥±, the exposed pulps were irradiated with Ga-As
laser(Dens- Bio laser, Dong Yang Medical Co., Korea, output power ; 27mW, wane
length, 904nm, freguency ; 10,000Hz pulse width ; 200ns) for 2 minutes and 4 minutes
each and then they were capped with the same as those of the control group.
In experimental group ¥° and ¥±, the exposed pulps were covered by aluminum foil and
sealed with IRMR after irradiation with the laser for 2 minutes and 4
minutes each.
The animals were sacrificed at the postoperative 1, 3, 5 week for histologic studies.
The following results were obtained in this study ;
1. Dentinal bridge was formed more fast and broadly in the experimental group ¥° , ¥±
than other groups but there were no histologic differences in the degree of its formation
among control group, experimental group ¥², ¥³.
2. Odontoblastic activity at amputated pulp was increased in the experimental group ¥°,
¥± than other groups but there were no histologic differences in the odontoblastic
activity among control group, experimental group ¥², ¥³.
3. The inflammation was severe at the postoperative 1 week of all groups, but its
condition subsided with time. At the postoperative 3, 5 week, its condition in the
experimental group ¥°, ¥± was less severe than that in the control group, but its
condition In the experimental group¥°, ¥± was not different with that in the control
group.
4. There were no histologic differences among all the experimental groups according to
the duration of laser irradiation time.

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