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AN INVESTIGATION OF THE FREQUENCY AND PATENCY OF ACCESSORY CANALS IN FURCATION AREAS OF PRIMARY MOLARS

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À̽ÂÇö, ±è¼º±â, Á¤Å¼º, ±è½Å,
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À̽ÂÇö ( Lee Seung-Hyun ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¼º±â ( Kim Sung-Ki ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
Á¤Å¼º ( Jeong Tae-Sung ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±è½Å ( Kim Shin ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

À¯±¸Ä¡ÀÇ ±íÀº ¿ì½ÄÀ¸·Î Ä¡¼öº´¼Ò°¡ À¯¹ßµÇ¾î ÁÖÀ§ Á¶Á÷¿¡ ³ó¾çÀÌ Çü¼ºµÇ´Â °æ¿ì¸¦ ÀÚÁÖ º¸°Ô µÈ´Ù. ƯÈ÷ À¯±¸Ä¡¿¡¼­ Ä¡±ÙºÐÁöºÎ ¹æ»ç¼±Åõ°ú¼º º´¼Ò¸¦ ÈçÈ÷ Á¢ÇÏ°Ô µÇ´Âµ¥ ÀÌ·¯ÇÑ º´¸®Àû °úÁ¤¿¡¼­ À¯±¸Ä¡ Ä¡±ÙºÐÁöºÎ ºÎ±Ù°üÀº ÀÓ»óÀûÀ¸·Î ¸Å¿ì Áß¿äÇÑ Àǹ̸¦ Áö´Ñ´Ù. ¿µ±¸Ä¡ÀÇ Ä¡±ÙºÐÁöºÎ ºÎ±Ù°üÀÇ Á¸Àç¿¡ ´ëÇÑ ¿¬±¸º¸°í´Â ¸¹°í ±× ¹æ¹ý ¶ÇÇÑ ´Ù¾çÇÏ¿´À¸³ª À¯±¸Ä¡ÀÇ Ä¡±ÙºÐÁöºÎ ºÎ±Ù°ü¿¡ ´ëÇÑ ¿¬±¸´Â ºÎÁ·ÇÏ¿´´Ù.
ÀÌ¿¡ º» ¿¬±¸´Â À¯±¸Ä¡ Ä¡±ÙºÐÁöºÎ ºÎ±Ù°üÀÇ ÇüÅÂÀû Ư¡°ú ºóµµ, °³Å뼺À» ÀÌÇØÇÏ°íÀÚ 52°³ÀÇ Ä¡¾Æ¸¦ ÁÖ»çÇü ÀüÀÚÇö¹Ì°æ°ú Áø°ø ÈíÀÔÇÏ¿¡ ¿°·á¸¦ ħÅõ½ÃÄÑ ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ÁÖ»çÀüÀÚÇö¹Ì°æ ¿¬±¸¿¡¼­ À¯±¸Ä¡ Ä¡±ÙºÐÁöºÎ ¿Ü¸é°ú ³»¸é¿¡¼­ÀÇ ºÎ±Ù°üÀÇ ºóµµ´Â °¢°¢ 60%, 35%¿´°í, ºÎ±Ù°üÀÇ Á÷°æÀº °¢°¢ 11{sim}107{mu}m, 13{sim}62{mu}m¿´´Ù.
2. Áø°ø ÈíÀÔ ¹æ¹ý°ú ¿°·á ħÅõ¹ýÀ» ½ÃÇàÇÏ¿© Ä¡±ÙºÐÁöºÎ¿¡ °³ÅëµÈ ºÎ±Ù°üÀ» °¡Áö´Â À¯±¸Ä¡ÀÇ ºóµµ´Â 20°³ÀÇ ½Ã·áÁß 50%À̾ú´Ù.

Deep caries in primary molars without early intervention frequently induce a pulpal disease and consequent abscess lesion in surrounding tissue. Especially in many furcation radiolucent lesions of primary molars, accessory canals in furcation areas of primary molars play an important role in theses pathological progress. Although the studies of these communication canals in furcation area of human permanent molar well documented, there has been little research showing their existence in primary molar.
For the purpose of understanding the morphological characteristics of accessory canals at furcation areas of primary molars and examining its frequency and patency, 52 specimen teeth were observed under the scanning electro-microscope and tested with dye penetration under vacuum pressure, and obtained the results as follows :
1. In SEM study, the frequency of accessory foramina viewed from the external and internal furcation area was 60% and 35% respectively. Likewise the diameter of the accessory canals was within the range of 11{sim}107{mu}m and 12{sim}62{mu}m respectively.
2. The frequency of patent accessory canals evidenced by the dye penetrated under the vacuum suction at furca areas in primary molars was 50% among the 20 specimen teeth tested.

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Primary molars;Furcation area;Accessory canal;Frequency;Patency

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