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CEPHALOMETRIC STUDY OF CLASS III MALOCCLUSION PATTERN OF GROWING CHILDREN IN KOREA

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Abstract

°á·Ð
III±Þ ºÎÁ¤±³ÇÕ ¾Æµ¿ÀÇ ¾ç»óÀ» ¾Ë¾Æº¸±â À§ÇØ III±Þ ºÎÁ¤±³ÇÕ°ú Á¤»ó±³ÇÕÀ» Áö´Ñ 8¼¼¿¡¼­ 12
¼¼»çÀÌÀÇ Çѱ¹ ¼ºÀå±â ¾Æµ¿ÀÇ Ãø¸ðµÎºÎ ¹æ»ç¼±»çÁøÀ» ÃÔ¿µÇÏ¿© 11°³ Ç׸ñ¿¡ ´ëÇÏ¿© Åë°èÇÐ
ÀûÀ¸·Î ºÐ¼®ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. 11°³ Ç׸ñ¿¡ ´ëÇØ III±Þ ºÎÁ¤±³ÇÕÀÚ¿Í Á¤»ó±³ÇÕÀÚÀÇ À¯ÀǼº °ËÁõ°á°ú, SNA, Maxillary
incisor to point A(mm), Maxillary incisor-NA line(angle), Maxillary incisor to NA
line(mm), IMPA, Facial angle, Pog to Nasion Perpendicular(mm)¿¡¼­ µÎ ±º°£¿¡ À¯ÀÇÇÑ
Â÷°¡ ÀÖ¾ú´Ù(P<0.05).
2. III±Þ ºÎÁ¤±³ÇÕ¿¡ À־ »ó¾Ç°ñ°ú ÇϾǰñÀÌ Á¤»ó¹üÀ§¿¡ ÀÖ´Â À¯ÇüÀÌ °¡Àå ¸¹¾ÒÀ¸¸ç, »ó
¾Ç°ñÀÌ Á¤»ó¹üÁÖ¿¡ ÀÖ°í ÇϾǰñÀÌ Á¤»ó¹üÀ§º¸´Ù Àü¹æ¿¡ À§Ä¡ÇÑ À¯ÇüÀÌ ±× ´ÙÀ½À̾ú´Ù.
3. ¼öÁ÷¼ººÐ ºÐ¼®¿¡¼­´Â III±Þ ºÎÁ¤±³ÇÕÀÚÀÇ 54%¿¡¼­ long lower facial height¿´À¸³ª, short
lower facial height´Â 10%¿¡ ºÒ°úÇß´Ù.
#ÃÊ·Ï#
This study was performed to analyse the pattern of the Class III malocclusion in
Korean growing children. The cephlometric radiograms were taken from the growing
children at 8 to 12 years old, then 11 items were statistically analysed.
The results of this study were as follows :
1. As compared 11 items between Class III malocclusion and normal occlusion, there
was significant difference on SNA angle, Maxillary incisor to point A(mm), Maxillary
incisor-NA line(angle), Maxillary incisor to NA line(mm), IMPA, Facial angle and Pog
to Nation Perpendicular(mm) between Class III malocclusion and normal occlusion.
2. The most common Class III malocclusion pattern was found that the normal maxilla
and madible followed by normal maxilla and prognathic mandible.
3. In vertical component of Class III malocclusion, subjects with long lower facial
height were 54% of the total but with short lower facial height were 10%.

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