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A Study of Infraocclusion Of Primary Molars

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Abstract

Çѱ¹ÀΠȥÇÕÄ¡¿­±âÀÇ ¾Æµ¿(6¼¼¿¡¼­ 11¼¼±îÁö) 1151¸íÀ» ´ë»óÀ¸·Î ÀÓ»óÀûÀÎ ÀúÀ§±³ÇÕ»óŸ¦
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1. ÀúÀ§±³ÇÕÄ¡¾ÆÀÇ ¹ß»ýºóµµ´Â ´ë»ó¾Æµ¿ÀÇ 6.9%¿´°í, ´ë»óÄ¡¾Æ¿¡ ´ëÇÏ¿©¼­´Â 1.5%¿´´Ù.
2. ÀúÀ§±³ÇÕÄ¡¾ÆÀÇ ¹ß»ýºóµµ´Â 6¼¼¿¡¼­ 9¼¼±îÁö Áõ°¡ÇÏ´Ù°¡ 10¼¼¿¡ À̸£·¯ Å©°Ô °¨¼ÒÇÏ´Â
°æÇâÀ» º¸¿´´Ù.
3. ÀúÀ§±³ÇÕÄ¡¾ÆÀÇ ¹ß»ýºóµµ´Â ¼ºº° Â÷ÀÌ´Â °ÅÀÇ ¾ø¾ú°í, ÇϾǿ¡¼­ »ó¾Çº¸´Ù Å©°Ô ³ô¾ÒÀ¸¸ç
ƯÈ÷ ÇϾÇÁ¦ 1 À¯±¸Ä¡¿¡¼­ °¡Àå ³ô¾Ò´Ù.
4. ÀúÀ§±³ÇÕÄ¡¾Æ¸¦ 1°³¸¸ °¡Áø ¾Æµ¿°ú 2°³ ÀÌ»ó °¡Áø ¾Æµ¿ÀÇ ºñÀ²Àº 2:1·Î ³ªÅ¸³µ°í, »óÇÏ·Î
°¡Áø °æ¿ìº¸´Ù´Â Á¿ì·Î °¡Áø °æ¿ì°¡ ¸¹¾Ò´Ù.
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The purpose of this study was to determine the clinical diagnostic criteria of
infraocclusion of primary molars with radiographs, and to examine the prevalence of
infraoccluded tooth of each age group from 6 to 11 years old. The results of the study
were as follows:
1. The prevalence of infraocclusion of primary molars for all investigated children
showed 6.9% and for all investigated teeth showed 1.5%.
2. The prevalence of infraoccluded teeth increased from 6 to 9 years, but decreased
rapidly at 10 years.
3. The prevalence of infraoccluede teeth showed no significant difference between both
sexes, but that of mandible was higher than maxilla, and mandibular 1st primary molar
showed the highest prevalence of all primary molars.
4. The rate of one tooth-infraoccluded children ver us two tooth and more-infraoccluded
children was 2 to 1 and more cases appeared with right-left than upper-lower jaw.

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