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INTERRELATION BETWEEN THE ANGLE FORMED BY THE MIDSAGITTAL PLANE AND THE MANDIBULAR ANGLE AND THE HORIZONTAL INCLINATION OF THE CONDYLAR LONG AXIS

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Abstract

ÀúÀÚ´Â °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ ÇлýÁß ¾Ç°üÀýÀÇ ±â´ÉÀå¾ÖÀÇ º´·Â ¹× ÇöÁõÀÌ ¾ø°í ¾È¸ð°¡ ´Ü
Á¤ÇÑ Á¤»óÀÎ 56¸íÀ» ´ë»óÀ¸·Î ½Ã»óÁ¤Á߸鿡¼­ ¾çÃøÀÇ ÇϾǿ찢ºÎ»çÀÌÀÇ °¢µµ¿Í ÇϾǰúµÎÀå
ÃàÀÇ ¼öÆò°æ»çµµ¸¦ °èÃøÇÏ¿© Åë°èÇÐÀûÀ¸·Î ºÐ¼®ÇÑ ¹Ù ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ½Ã»óÁ¤Á߸鿡¼­ ÇϾǿìÀںΠ»çÀÌÀÇ °¢µµ´Â ¿ìÃøÀÌ 18.50¡¾1.48¡£, ÁÂÃøÀÌ 19.30¡¾1.55¡£
¿´´Ù.
2. ÇϾǰúµÎÀåÃàÀÇ ¼öÆò°æ»çµµ´Â ¿ìÃøÀÌ 19.25¡¾7.56¡£, ÁÂÃøÀÌ 20.27¡¾7.05¡£¿´´Ù.
3. µÎ °¢µµ°£ÀÇ °ü°è´Â ¿ìÃøÀÇ °æ¿ì y=20.31-0.0094x(r=-0.482, p<0.01), ÁÂÃøÀÇ °æ¿ì
y=20.64-0.066x(r=-0.301, p<0.05)ÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù(y : ÇϾǰúµÎÀåÃàÀÇ ¼öÆò°æ»çµµ, x : ½Ã
»óÁ¤Á߸鿡¼­ ÇϾǿ찢ºÎ »çÀÌÀÇ °¢µµ).
#ÃÊ·Ï#
To determine the horizontal inclination of the condylar long axis without taking the
submentovertex radiograph, the author studied the interrelation between the angle formed
by the midsagittal plane and the mandibular angle and the horizontal inclination of the
condylar long axis.
In 56 subjects, the author measure6 the angle formed by the midsagittal plane and
both mandibular angle using the modified Twirl Bow and the horizontal inclination of
the both condylar long axis from submentovertex radiographs.
The result were as follows:
The mean value of the angle formed by the midsagittal plane and the mandibular
angle was 18.50¡¾1.48¡£ in right side and 19.30¡¾1.55¡£ in left side.
The mean value of the horizontal inclination of the condylar long axis was 19.25¡¾7.56
¡£ in right side and 20.27¡¾7.05¡£ in left side.
The interrelation of the two angles was represented as follows: y = 20.31 -0.0094x (r
= -0.482, p<0.01) in right side and y = 20.64- 0.066x (r = -0.301, p < 0.05) in left
side(y ; the horizontal inclination of the condylar long axis, x; the angle formed by the
midsagittal plane and the mandibular angle).

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