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A RADIOGRAPHIC EXAMINATION ON THE THICKNESS OF MANDIBULAR ANGULAR CORTEX AT THE CHILD AND ADOLESCENT

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Abstract

°á ·Ð
ÀüºÏ ´ëÇб³ º´¿ø Ä¡°ú¿¡ ³»¿øÇÑ ¸¸ 3¼¼ºÎÅÍ 17¼¼±îÁöÀÇ È¯ÀÚÁß °ñ ÁúȯÀÇ ±â¿Õ·ÂÀÌ ¾ø°í
ÇÏ¾Ç ±¸Ä¡ºÎ¿¡ ¿ì½Ä ¹× ½ÇÁú °á¼ÕÀÌ ¾ø´Â ÃÑ 153¸íÀÇ Æijë¶ó¸¶ X¼± »çÁøÀ¸·Î ÇϾǰ¢ºÎ ÇÇ
Áú°ñ µÎ²²¸¦ ÃøÁ¤ÇÏ°í ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ÇϾǰ¢ºÎ ÇÇÁú°ñ µÎ²²ÀÇ Æò±ÕÄ¡´Â Çе¿ Àü±âÀÇ ³²¾Æ¿¡¼­ 1.01¡¾0.1§®, ¿©¾Æ¿¡¼­ 1.07¡¾
0.22§® ¿´À¸¸ç Çе¿±âÀÇ ³²¾Æ¿¡¼­ 1.23¡¾0.18§®, ¿©¾Æ¿¡¼­ 1.32¡¾0.18§®¿´°í û¼Ò³â±â ³²¾Æ¿¡
¼­ 1.60¡¾0.23§®, ¿©¾Æ¿¡¼­ 1.58¡¾0.20§®¿´´Ù.
2. Åë°èÇÐÀû ºÐ¼® °á°ú Á ¿ìÃø °¢°¢ÀÇ ÇÇÁú°ñ µÎ²² »çÀÌ¿¡´Â À¯ÀÇÂ÷°¡ ¾ø¾úÀ¸³ª ³²³à ³ª
ÀÌÀÇ t °ËÁ¤¿¡¼­´Â ¸ðµç ¿¬·ÉÀÇ Æò±ÕÄ¡¿¡¼­ ¿©¾Æ°¡ ³²¾Æ¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î ³ôÀº ¼öÄ¡¸¦
³ªÅ¸³Â´Ù. (p<0.05) °¢ ¿¬·É±ºº°·Î º¸¸é Çе¿ Àü±â(¸¸ 3-5¼¼ )¿Í Çе¿±â (¸¸ 6-11¼¼ )¿¡¼­´Â
°¢°¢ ¿© ¾Æ°¡ ³²¾Æ¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î ³ôÀº ¼öÄ¡¸¦ ³ªÅ¸³ÂÀ¸³ª(p<0.05, p<0.01) û¼Ò³â±â
¿¡´Â Åë°èÇÐÀûÀ¸·Î À¯ÀÇÂ÷°¡ ¾ø´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
³²³à ¸ðµÎ Çе¿ Àü±â¿Í Çе¿±â, Çе¿ Àü±â¿Í û¼Ò³â±â, Çе¿±â¿Í û¼Ò³â±â¿¡ °¢°¢ ÈÄÀÚ°¡
ÀüÀÚ¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î ³ôÀº ¼öÄ¡¸¦ ³ªÅ¸³Â´Ù. (p<0.01, p<0.01)
3. ¿¬·É°ú ÇϾǰ¢ºÎ ÇÇÁú°ñ µÎ²²¿ÍÀÇ »ó°ü °è¼ö´Â T=0.76À¸·Î ³ôÀº »ó°ü°ü°è¸¦ ³ªÅ¸³Â´Ù.
ȸ±Í ¹æÁ¤½ÄÀº ¿¬·ÉÀ» XÃàÀ¸·Î ÇÏ°í ÇϾǰ¢ºÎ ÇÇÁú°ñ µÎ²²¸¦ YÃàÀ¸·Î Çϸé Y= 11.3X-5.70
À̾ú´Ù.
#ÃÊ·Ï#
The purpose of this study was to determine the thickness of the cortical bone at the
mandibular angle in children and adolescents. The subjects were composed of 153
subjects who were 3 to 17 years of age that had not been history of bone disease or
metabolic disease and no dental caries or tooth loss on mandibular molars. The subjects
were divided in to three age groups, group ¥° (preschool children) was 3 to 5 years of
age and group ¥± (school children) was 6 to 11 years of age and group ¥² (adolescence)
was 12 to 17 Years of age. Panoramic radiographs of these patients were collected and
measurements of the thickness of the cortical bone were obtained at the mandibular
angle.
The average thickness of the cortical bone in the group I was 1.01¡¾0.18§® in boys
and 1.07¡¾0.22§® in girls. In the group ¥± was 1.23¡¾0.18 §® in boys and 1.32¡¾0.18 §® in
girls. In the group ¥² was 1.60¡¾0.23 §® in boys and 1.58¡¾0.20§® in girls. Statistical
analyses did not reveal ally significant difference between the right or left side of the
mandible but difference was exist between the same age groups by sex, especially in
group ¥± (p<0.01), except in group In. The greater thickness of cortical bone in the
older age group was shown to be statistically significant. The correlation coefficient
between age and the thickness of the cortical bone at the mandibular angle showed a
high value of r =0.76.

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