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Nerve Distribution of Dental Pulp in Human Primary and Young Permanent Teeth

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ÀÌÀÎÁ¤/In Jung Lee ÀÌÀç¹®/±èÇöÁ¤/³²¼øÇö/±è¿µÁø/Jae Mun Lee/Hyun Jung Kim/Soon Hyun Nam/Young Jin Kim

Abstract

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À¯Ä¡ ¹× Ãʱ⠿µ±¸Ä¡ÀÇ Ä¡¼ö½Å°æºÐÆ÷ ¹× º¯È­¸¦ Æò°¡Çϱâ À§ÇÏ¿© ±³Á¤Ä¡·á¸¦ À§ÇØ ¹ßÄ¡ÇÑ
Ä¡±ÙÈí¼ö°¡ ºñ±³Àû ÀûÀº À¯Ä¡, Á¤»ó Å»¶ô±âÀÇ À¯Ä¡, ¸ÍÃâÁßÀÎ ±³ÇÕÇÏÁö ¾ÊÀº Á¦ 1¼Ò±¸Ä¡, ¸Í
ÃâÀÌ ¿Ï·áµÇ¾î ±³ÇÕÇÏ°í ÀÖ´Â Á¦ 1¼Ò±¸Ä¡¸¦ ´ë»óÀ¸·Î neurofilament protein(NFP)À» ÀÌ¿ëÇÑ
¸é¿ªÁ¶Á÷È­ÇÐÀû ¹æ¹ýÀ¸·Î °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. Ä¡±ÙÈí¼ö°¡ ºñ±³Àû ÀûÀº À¯
Ä¡¿¡¼­µµ ¿µ±¸Ä¡¿Í À¯»çÇÑ ½Å°æÃÑÀÇ Á¸Àç¿Í ½Å°æºÐÆ÷ ÇüÅ°¡ °üÂûµÇ¾úÀ¸³ª, ¿µ±¸Ä¡¿¡ ºñÇØ
±× ½Å°æºÐÆ÷ÀÇ ¹Ðµµ°¡ ³·¾ÒÀ¸¸ç ºÐÁöÇü¼º ¶ÇÇÑ ¹Ì¾àÇÏ°Ô ³ªÅ¸³µ°í, Àü»ó¾ÆÁú·Î ÁøÀÔÇÏ´Â ¼¶
À¯ÀÇ ¼ö°¡ Àû¾ú´Ù. Á¤»óÅ»¶ô±âÀÇ À¯Ä¡¿¡¼­´Â ½Å°æÀÇ º¯¼ºÀ¸·Î ¼ÒÆ÷(vesicle), ´ÜÀý
(fragmentation)µîÀÌ °üÂûµÇ¾úÀ¸¸ç, ±× ½Å°æºÐÆ÷°¡ ÇöÀúÈ÷ °¨¼ÒµÇ¾î ³ªÅ¸³µ°í, ÃÑ»óÀÇ ÇüÅÂ
µµ ¼Ò½ÇµÇ¾ú´Ù. ±³ÇÕÇÏÁö ¾ÊÀº Á¦ 1¼Ò±¸Ä¡¿¡¼­ Ä¡¼ö ³»ÀÇ ½Å°æÀº ¸»´Ü°¡ÁöÀÇ ¼ýÀÚ°¡ Àû°í,
Ä¡¼ö Á¶»ó¾Æ ¼¼Æ÷ °æ°è¿¡ µµ´ÞÇÏ¿´À¸¸ç, ºñ±³Àû °¡´Â ½Å°æ ¼¶À¯°¡ ¸¹¾Ò´Ù. ±³ÇÕÇÏ°í ÀÖ´Â Á¦
1¼Ò±¸Ä¡¿¡¼­ Ä¡¼ö ³»ÀÇ ½Å°æÀº ¸»´ÜÀÌ Á¶»ó¾ÆÃþÀ¸·Î ÁøÃâÇÏ°í, ¾î¶² ½Å°æ¼¶À¯´Â Àü»ó¾ÆÁúÃþ
±îÁö ÁøÀÔÇÏ¿´À¸¸ç, ºñ±³Àû ±½Àº ½Å°æ¼¶À¯ÀÇ ºÐÆ÷°¡ ¸¹¾ÆÁ³´Ù.
#ÃÊ·Ï#
The purpose of this study was to investigate the distribution of nerves in the dental
pulp of early extracted primary teeth, normal exfoliated primary teeth, partially-erupted,
nonfunctional, premolars, and erupted, functional, premolars, Numbers of sample were 10
teeth in each group. The distribution of nerves in the dental pulp were investigated by
means of immunohistochemistry for detection of neurofilament protein(NFP). The results
were as follows : The early extracted primary teeth exhibited patters of innervation
similar to the those observed for young permanent teeth. the plexform arrangement of
fibers was not evident in the primary teeth. Most nerves appear to terminate about the
odontoblasts. As primary teeth began to undergo root resorption, degenerative changes
such as vesicles and fragmentation appear in the nerves. The quantity of neural tissue
also decreased. In teeth in which the roots were almost completely resorbed only a
small number of nerves remain. There was a decrease in the number of terminal
branches in the pulp of the partially-erupted. nonfunctional, premolars and those present
reached the pulpo-odontoblastic border. The nerve terminals in the pulp of the erupted,
functional premolars were traced to the dentinal tubule and a few nerve fibers formed
loops in the predentin

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