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ROENTGENOCEPHALOMETRIC STUDY FOR THE CHILDREN IN THE PRIMARY DENTITION OF KOREAN

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±èµ¿ÁØ(ÐÝÔÔñç)/Dong Joon Kim

Abstract

ÀúÀÚ´Â ¼­¿ï½Ã³» ¼ÒÀçÀÇ À¯Ä¡¿ø°ú º» º´¿ø ¼Ò¾ÆÄ¡°ú¿¡ ³»¿øÇÑ È¯ÀÚÁß 4¼¼¡­5¼¼ À¯Ä¡¿­±â
¾Æµ¿¿¡¼­ Á¤»ó±³ÇÕ»óŸ¦ °¡Áø ³²³à °¢ 50¸í¾¿ 100¸íÀ» ¼±ÅÃÇÏ¿© µÎºÎ ¹æ»ç¼± °èÃøÇÐÀû ¿¬
±¸¸¦ ÇÑ °á°ú ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. µÎ°³°ñºÐ¼®(Skeletal analysis)¿¡¼­ °¢µµ°èÃøÄ¡´Â ³²³à»çÀÌ¿¡ À¯ÀÇÇÑ Â÷°¡ ¾ø°í °Å¸®°èÃø
Ä¡´Â ³²ÀÚ°¡ ¿©ÀÚº¸´Ù Àü¹ÝÀûÀ¸·Î Å« ¼öÄ¡¸¦ º¸¿© ÁÖ°í ÀÖ´Ù.
2. Saddle angle 122.30¡Æ, Articular angle 147.6¡Æ, Gonial angle 126.5¡Æ·Î¼­ ¼¼°¢ÀÇ ÇÕÀº
³²ÀÚ 396.1¡Æ, ¿©ÀÚ 396.6¡Æ·Î ³ªÅ¸³µ´Ù.
3. ÇϾǰñ °ñüºÎ´ë Àü¹æµÎ°³±âÀúºÎ ±æÀÌÀÇ ºñ´Â ³²³à ¸ðµÎ 0.91 : 1ÀÇ °ü°è¸¦ °¡Á³´Ù.
4. À¯Ä¡¿­±â ¾Æµ¿¿¡¼­ nasion°ú A point´Â sella turcica¿¡ ´ëÇØ °°Àº ¼ºÀåÀ²·Î Àü¹æÀ̵¿À»
º¸È÷°í pogonion°ú B point´Â S-N plane¿¡ °°Àº À§Ä¡¿¡ ÀÖÀ¸¸ç bony chinÀ̳ª chin button
ÀÌ ¾ÆÁ÷ ¹ß´ÞµÇÁö ¾Ê¾Ò°í 4¼¼ ÀÌÈĺÎÅÍ »ó¾Ç¿¡ ºñÇØ ÇϾÇÀÇ Àü¹æ¼ºÀåÀÌ ´õ ºü¸¥ °ÍÀ¸·Î ³ª
Ÿ³µ´Ù.
5. Àü¹æ¾È¸é°í°æ¿¡ ´ëÇÑ ÈĹæ¾È¸é°í°æÀÇ ¹éºÐÀ²Àº ³²ÀÚ 64.4%, ¿©ÀÚ 64.1%¿´´Ù.
6. »ó¾ÇÀ¯ÀüÄ¡´Â ¿µ±¸Ä¡ÀüÄ¡¿¡ ºñÇØ ´õ ¼öÁ÷À¸·Î À§Ä¡ÇÏ¿´°í ÇϾÇÀ¯ÀüÄ¡´Â ¿µ±¸Ä¡ÀüÄ¡¿¡
ºñÇØ ´õ ¼³ÃøÀ¸·Î °æ»çÁ®¼­ »óÇϾÇÀ¯ÀüÄ¡´Â ¿µ±¸Ä¡ÀüÄ¡¿¡ ºñÇØ ´õ ¼öÁ÷ÀûÀÎ °ü°è¸¦ º¸ÀÌ°í
ÀÖ´Ù.
7. »ó¾ÇÀ¯ÀüÄ¡´Â ¿©ÀÚ°¡ ³²ÀÚº¸´Ù ´õ ¼øÃøÀ¸·Î °æ»çÁ³´Ù.
8. ½É¹Ì¼±(Ricketts' Esthetic line)¿¡ ´ëÇÑ ¿ôÀÔ¼úÀÇ µ¹Ãâµµ´Â 2.11mmÀ̸ç, ¾Æ·§ÀÔ¼úÀÇ µ¹
Ãâµµ´Â 2.33mm¿´´Ù.

In order to know cephalometric norms for the preschool children, this
roentgenocephalometric study was undertaken in each 50 Korean male and female
children of primary dentition age from 4 to 5 year.
The following results were obtained.
1. In the skeletal analysis, there was no significant difference between male and female
in angular measurement and the linear measurement of the male was generally greater
than that of the female.
2. Saddle angle was 122.3¡Æ, articular angle was 147.6¡Æ, gonial angle was 119.4¡Æ and
the sum of each angle was 396.1¡Æ in male and 396.6¡Æ in female.
3. The ratio of mandibular body to anterior cranial base was about 1 : 0.91.
4. In the primary dentition, suggested that the nasion and point A move forward
relative to sella turcica in a fashion, pogonion and point B are equal in angular position
relative to plan S-N, bony chin and chin button was yet underdeveloped, and the
forward growth of mandible was seen rapid than maxilla after 4 years.
5. Suggested that the percentage of anterior facial height to the posterior facial height
were 64.4% in male and 64.1% in female.
6. Maxillary primary incisors was more upright than the permanent incisors, mandibular
primary incisors was inclined lingually relative to the permanent incisor, and primary
incisors was more upright than the permanent incisors.
7. Maxillary primary incisors in female was inclined labially than male.
8. In the the relationship of the upper lip and lower lip to the esthetic line, the upper
lip was 2.11mm and the lower lip was 2.33mm front of the esthetic line.

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