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A ROENTGENOCEPHALOMETRIC STUDY ON THE CONDYLAR DISPLACEMENT IN ANGLE'S CLASS ¥° & ¥² MALOCCLUSION

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Abstract

¾Ç°üÀýºÎÀ§ÀÇ ±â´ÉÀÌ»ó ¹× ÇöÁõÀÌ ¾ø´Â ¼ºÀÎ ¥°±Þ ºÎÁ¤±³ÇÕÀÚ 22¸í°ú ¥²±Þ ºÎÁ¤±³ÇÕÀÚ 14
¸íÀ» Á߽ɱ³À§¿Í Á߽ɱ³ÇÕ¿¡¼­ °¢°¢ µÎºÎ¹æ»ç¼±±Ô°Ý»çÁøÀ» ÃÔ¿µÇÑ ÈÄ RichettsºÐ¼®À» ÇÏ°í
¶ÇÇÑ ¾ÈÀ̼±À» ±âÁØÀ¸·Î Á߽ɱ³À§¿¡¼­ Á߽ɱ³ÇÕ»óÅ·ÎÀÇ ÇϾǰñÀÇ Àü¹æÀ̵¿°Å¸®¸¦ ÃøÁ¤ÇÏ¿©
´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. Á߽ɱ³À§¿Í Á߽ɱ³ÇÕ°£ÀÇ °èÃøÇ׸ñµéÀÇ »ó°ü°ü°è´Â ¥°±Þ ¹× ¥²±Þ ºÎÁ¤±³ÇÕÀÚ¿¡¼­ 7°³
Ç׸ñ ¸ðµÎ ³ôÀº »ó°ü°ü°è¸¦ º¸¿´´Ù.
2 P<0.05¼öÁØ¿¡¼­ Á߽ɱ³À§¿Í Á߽ɱ³ÇÕ°£¿¡ À¯ÀÇÀÇ Â÷À̸¦ º¸ÀÌ´Â Ç׸ñÀº I±Þ ºÎÁ¤±³ÇÕÀÚ
¿¡¼­´Â lower facial height, ¥²±Þ ºÎÁ¤±³ÇÕÀÚ¿¡¼­´Â facial axis angle, mandibular plane an
È÷e, convexity of A point, lower incisor protrusion, lower facial height¿´´Ù.
3. Á߽ɱ³À§¿¡¼­ Á߽ɱ³ÇÕ»óÅ·ÎÀÇ ÇϾǰñÀÇ Àü¹æÀ̵¿°Å¸®±¸ ¥°±Þ ºÎÁ¤±³ÇÒÀÚ¿¡¼­´Â Æò±Õ
1.27§® ¿´À¸¸ç,¥²±Þ ºÎÁ¤±³ÇÕÀÚ¿¡¼­´Â Æò±Õ 1.70§®¿´°í, ÀüüÁ¶»ç´ë»óÀÚ¿¡¼­´Â Æò±Õ 1.44§®¿´
´Ù.
#ÃÊ·Ï#
The purpose of this investigation was to know correlation of mean values between
centric occlusion and centric relation by the cephalogram in Angle's Class ¥°and ¥²
malocclusion subjects.
22 adults with Augle's Class¥°malocclusion (17 men and 5 women, 21 to 27 years of
age) and 14 adults with Angle's Class ¥² malocclusion (10 men and 4 women, 21 to 27
years of age) were selected from the dental students in Yonsei University.
Each subject was given two lateral cephalometric radiographies and cephalometric
analysis was performed.
All data from these analyses was recorded and statistically processed with CYBER
computer system.
The results were obtained as follows:
1. There was a strong positive correlation between centric occlusion and centric
relation in all subjects with Angle's Class¥°and ¥² malocclusion.
2. In Angle's Class ¥° malocclusion, measurements in lower facial height revealed
significant differance between centric occlusion and centric relation (P<0.05).
In Angle's Class ¥² malocclusion, measurements in facial axis angle, mandibular plane
angle, convexity of A point, lower incisor protrusion, lower facial height revealed
significant differance between centric occlusion and centric relation (P<0.05).
3. When the mandible was moved from centric occlusion to centric relation, the mean
distance of mandibular movement was 1.27§® (0.2-2.8§®) in Angle's Class I malocclusion,
1.70§® (0.55-4.15§®) in Angle's Class ¥² malocclusion, and 1.44§® (0.2-4.15§®) in all
subjects.

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