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Fine structures of physiologic and pathologic root resorption surfaces of deciduous teeth

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¹ÚÀ±Èñ ( Park Youn-Hee ) - ¿¬¼¼´ëÇб³ ÀÇ°ú´ëÇÐ Áø´Ü°Ë»çÀÇÇб³½Ç
¼ÕÈï±Ô ( Son Heung-Kyu ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
ÃÖº´Àç ( Choi Byung-Jai ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

À¯Ä¡ Ä¡±Ù Èí¼ö°¡ ÀϾ´Â °æ¿ì´Â ÀÓ»ó¿¡¼­ ¸¹ÀÌ Á¢ÇÒ ¼ö ÀÖ´Ù. À¯Ä¡ Ä¡±Ù Èí¼ö´Â ³ªÀÌ¿¡ µû¸¥ »ý¸®Àû Èí¼ö¿Í Ä¡¾Æ¿ì½ÄÁõ ¹× ¿Ü»ó µîÀ¸·Î ºñÁ¤»óÀûÀ¸·Î Èí¼öµÇ´Â ¿°Áõ¼º Èí¼ö·Î ³ª´­ ¼ö ÀÖ´Ù. ¿°Áõ¼º Èí¼ö´Â ±× ½Ã±â¿Í ¾ç»óÀÌ »ý¸®ÀûÀÎ Ä¡±Ù Èí¼ö¿Í´Â ´Ù¸£¸ç, Èí¼ö±âÀüÀ̳ª Èí¼ö¸éÀÇ ¹Ì¼¼±¸Á¶¿¡ À־µµ ¸¹Àº Â÷ÀÌ°¡ ÀÖÀ» °ÍÀ¸·Î »ç·áµÈ´Ù. À¯Ä¡ Ä¡±Ù Èí¼ö¸éÀÇ ¹Ì¼¼±¸Á¶¿¡ ´ëÇÑ ¿¬±¸´Â ¸¹ÀÌ ÀÖ¾úÀ¸³ª, »ý¸®Àû Èí¼ö¸é°ú ¿°Áõ¼º Èí¼ö¸éÀÇ ¹Ì¼¼±¸Á¶¸¦ ºñ±³ÇÑ ¿¬±¸´Â µå¹°´Ù.

º» ¿¬±¸´Â »ý¸®Àû Èí¼ö¸é°ú ¿°Áõ¼º Èí¼ö¸éÀÇ ÇüÅ ¹× ÀÎÁ¢ÇÑ ¼¼Æ÷¸¦ ¿¬±¸Çϱâ À§ÇÏ¿© »ý¸®Àû ¹× ¿°Áõ¼º Èí¼ö·Î ÀÎÇØ ¹ß°ÅµÈ À¯Ä¡ Ä¡±ÙÀÇ Èí¼ö Ç¥¸éÀ» ÁÖ»çÀüÀÚÇö¹Ì°æ»óÀ¸·Î, Á¶Á÷ÇÐÀû ÇüŸ¦ ±¤ÇÐÇö¹Ì°æ»óÀ¸·Î °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº Â÷ÀÌÁ¡À» ¾Ë ¼ö ÀÖ¾ú´Ù.

1.ÁÖ»çÀüÀÚÇö¹Ì°æ»ó¿¡¼­ »ý¸®Àû À¯Ä¡ Ä¡±Ù Èí¼ö Ç¥¸éÀº Ÿ¿øÇü, ¿øÇü ¹× ´Ù°¢Çü ¸ð¾çÀÇ Èí¼ö¼Ò¿Í°¡ °üÂûµÇ¾ú°í, ¿°Áõ¼º Èí¼ö Ç¥¸éÀº Å©±â°¡ ÀÛÀ¸¸ç ÇüÅ°¡ ´Ù¾çÇÏ°í ¸Å¿ì ºÒ±ÔÄ¢ÇÑ ¹«Á¤Çü ÇüÅÂÀÇ Èí¼ö¼Ò¿Í°¡ °üÂûµÇ¾ú´Ù.

2.±¤ÇÐÇö¹Ì°æ»ó¿¡¼­ »ý¸®Àû À¯Ä¡ Ä¡±Ù Èí¼ö¸éÀº Èí¼ö¼Ò¿Í·Î ±¸¼ºµÈ ±ÔÄ¢ÀûÀÎ Å« Èí¼ö¿Í°¡ °üÂûµÇ¾ú°í, ¿°Áõ¼º Èí¼ö¸éÀº ºÒ±ÔÄ¢ÇÑ Èí¼ö¼Ò¿Í°¡ °üÂûµÇ¾ú´Ù.

3.±¤ÇÐÇö¹Ì°æ»ó¿¡¼­ »ý¸®Àû À¯Ä¡ Ä¡±Ù Èí¼ö¸é¿¡´Â ´ÙÇÙ°Å´ë¼¼Æ÷°¡ Èí¼ö¼Ò¿Í¿¡ Á÷Á¢ Á¢ÇÏ°í ÀÖ¾úÀ¸¸ç, ¿°Áõ¼º Èí¼ö¸éÀº °£¿±¼¼Æ÷ ¹× ¿°Áõ¼¼Æ÷°¡ ¸¹ÀÌ °üÂûµÇ¾ú´Ù.

4.±¤ÇÐÇö¹Ì°æ»ó¿¡¼­ ¿°Áõ¼º Ä¡±Ù Èí¼ö¸é¿¡¼­´Â »ó¾ÆÁú Èí¼ö¸¦ º¸»óÇÏ´Â ºÎºÐÀûÀÎ ¹é¾ÇÁú Çü¼ºÀÌ °üÂûµÇ¾ú´Ù.

Deciduous teeth can be extracted for two reasons, one due to the physiologic resorption and the other by the inflammation at the apex after traumatic injury. Physiologic resorption may be different from pathologic resorption in timing and mechanism. Therefore we resumed the different features of physiologic and pathologic resorption root surfaces.

Many previous studies showed micromorphology of resorbed surface of roots of deciduous teeth. But, few studies compared physiological and pathological root resorption surfaces.

In this study, we carefully observed microscopic morphologies of those two different root surfaces by scanning electron microscope and histologic features by light microscope. The resultant differences between physiologic and pathologic resorption surfaces of deciduous teeth were as follows:

1. The morphology of pathologic resorption lacunae due to inflammation varied in size and shape with irregular boundaries compared with the physiologic areas from scanning electron microscope observations.

2. From light microscope observations, several large resorption fossae containing numerous resorption lacunae were found, whereas the resorption lacunae were irregular in shape with pathologic resorption surface.

3. Numerous multinucleated giant cells were closely attached to the physiologic resorption lacunae, whereas several kinds of mesenchymal cells with numerous inflammatory cells were found in the areas adjacent to the pathologic resorption surface.

4. Light microscope findings showed that compensating cementum formation took place along some of the areas of inflammatory dentinal resorption.

In conclusion, several morphological differences were between physiologic and pathologic root resorption surfaces of human deciduous teeth. The future studies should include cytochemisty to clarify the cellular roles in resorption process observations of pulpal surfaces of coronal and radicular dentin to find the changes that occur in each phase of human deciduous tooth resorption.

Å°¿öµå

¿°Áõ¼º Ä¡±Ù Èí¼ö;»ý¸®Àû Ä¡±Ù Èí¼ö;ÁÖ»çÀüÀÚÇö¹Ì°æ;±¤ÇÐÇö¹Ì°æ À¯Ä¡
Pathologic root resorption;Physiologic root resorption;Scanning electron microscope;Light microscope;Deciduous teeth

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