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RADOGRAPHIC STUDY OF HEIGHT OF MANDIBULAR CANAL

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Abstract

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Æijë¶ó¸¶ »çÁø¿¡¼­ ÇϾǰüÀ» ¸íÈ®ÇÏ°Ô ÆǺ°ÇÒ ¼ö ¾øÀ» °æ¿ì¿¡ ÇϾǰüÀÇ À§Ä¡¸¦ ÃßÁ¤ÇÏ´Â
µ¥ µµ¿òÀ» ÁÖ±â À§ÇØ °Ç°­ÇÑ Ä¡ÁÖÁ¶Á÷ ¼Ò°ßÀ» º¸À̸ç X¼± »çÁø¿¡¼­ Ä¡Á¶°ñ ¼Ò½ÇÀÌ °ÅÀÇ °ü
ÂûµÇÁö ¾Ê´Â 20´ë Áß¹Ý ¼ºÀÎ 261¸íÀ» ´ë»óÀ¸·Î ÇϾǰüÀÇ ÁÖÇà ³ôÀ̸¦ Æijë¶ó¸¶ »çÁø»ó¿¡¼­
Á¿ìÃøÀ¸·Î °èÃøÇÏ°í Æò°¡ÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ÃÔ¿µµÈ 261Áõ·Ê Áß ÇϾǰüÀ» ¸íÈ®ÇÏ°Ô ÆǺ°ÇÏÁö ¸øÇÏ´Â Áõ·Ê´Â 56¿¹(2).4%)À̾ú´Ù.
2. Ä¡Á¶Á¤¿¡¼­ ÇϾǰü »ó¿¬±îÁöÀÇ °Å¸®¸¦ ÃøÁ¤ÇÏ¿© Æò±ÕÄ¡¸¦ ºñ±³ÇÑ °á°ú Á¦1´ë±¸Ä¡ ºÎÀ§
°¡ Á¦2´ë±¸Ä¡ ºÎÀ§º¸´Ù ÄÇÀ¸¸ç Åë°èÇÐÀûÀ¸·Î À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù(P<0.05).
3. ÇϾǰü »ó¿¬¿¡¼­ ÇϾǰñ ±âÀúºÎÀÇ ÇÏ¿¬±îÁöÀÇ °Å¸® ÃøÁ¤Ä¡´Â Á¦ 2 ´ë±¸Ä¡ ºÎÀ§°¡ Á¦ 1
´ë±¸Ä¡ ºÎÀ§º¸´Ù ÄÇÀ¸¸ç Åë°èÇÐÀûÀ¸·Î À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù(P<0.05). ±×¸®°í À§ÀÇ ÃøÁ¤Ä¡µéÀº
Á¿ìÃø µ¿ÀÏ Ä¡¾Æ°£ÀÇ Åë°èÇÐÀû À¯ÀÇÂ÷´Â ¾ø¾ú´Ù(P>0.05).
4. ÀÌ°ø ºÎÀ§¿¡¼­ÀÇ Ä¡Á¶Á¤ºÎ¿¡¼­ ÀÌ°ø»ó¿¬±îÁöÀÇ °Å¸®¿Í ÀÌ°ø»ó¿¬¿¡¼­ ÇϾǰñ ±âÀúºÎ ÇÏ
¿¬±îÁöÀÇ °Å¸® ÃøÁ¤Ä¡´Â Á¿ìÃø°£ÀÇ À¯ÀÇÂ÷´Â ¾ø°Ô ³ªÅ¸³µ´Ù(P>0.05).
5. Ä¡Á¶Á¤¿¡¼­ ÇϾǰñ ÇÏ¿¬±îÁöÀÇ ÃøÁ¤Ä¡¸¦ ÇϾǰü »ó¿¬¿¡¼­ ÇϾǰñ ÇÏ¿¬±îÁöÀÇ ÃøÁ¤Ä¡·Î
°¢°¢ ³ª´« ÈÄ Æò±ÕÀ» ±¸ÇÑ °á°ú Á¦1´ë ±¸Ä¡ºÎ 2.84-2.86¹è, Á¦2´ë ±¸Ä¡ºÎ 2.47-2.52¹è·Î ³ªÅ¸
³µÀ¸¸ç Á¦1´ë ±¸Ä¡¿Í Á¦2´ë ±¸Ä¡°£¿¡ Åë°èÇÐÀû À¯ÀÇÂ÷°¡ ÀÖ¾ú´Ù(P<0.05). ÀÌ°ø ºÎÀ§´Â
2.02-2.04¹è¸¦ ³ªÅ¸³ÂÀ¸¸ç Á¿ìÃø°£¿¡´Â Åë°èÇÐÀûÀÎ À¯ÀÇÂ÷°¡ ¾ø¾ú´Ù(P>0.05).
6. ÀÌ°øÀÇ Àü¹æ±¼°î ºÎÀ§ÀÇ Æò±Õ ÃøÁ¤Ä¡´Â 2.28-2.29§®À̾úÀ¸¸ç Á¿ìÃø°£¿¡ Åë°èÇÐÀûÀÎ À¯
ÀÇÂ÷´Â ¾ø¾ú´Ù(P>0.05).

Mandibular canal is an important anatomic structure for implant surgery. Many
clinicians favor a panoramic procedure instead of tomographic or computed tomographic
procedure fir the pre-surgery because of low cost £¦ easy manipulation. But mandibular
canal will not be observable on panoramic X-ray film when bony surrounding structure
of mandibular canal is not thick. In this case, we should predict the location of
mandibular canal by comparing the opposite side or supposing the relative height of
mandibular canal in mandibular body if other obserable methods unusable.
The author takened the 261 panoramic views of healthy adults and measured the
distance (alveolar process) between alveolar crest and superior border of mandibular
canal, distance(basal bone) between superior border of mandibular canal and inferior
cortex of mandible, respectively.
The obtained results were as followings.
1. 56 cases(21.4%) from 261 cases sowed inevident walls of mandibular canal on
X-ray films.
2. In comparing the 1st molar area and the 2nd molar area, the portions of mandibular
1st molar showed greater height of alveolar process area and the portions of mandibular
2nd molar showed greater height of basal bone area, respectively.
3. Distances from alveolar crest to inferior cortex represented 2.02-2.04 times(mental
foramen), 2.47-2.52 times(2nd molar), 2.84-2.86 times(1st molar) of distance from
mandibular canal to inferior cortex.
4 Usually each measurements ,showed non-significant difference, (P>0.05) between right
and left side of mandible.
5. The average length of anterior loops of mental foramens was measured about 2.285§®.

Å°¿öµå

Alveolar forest; Inferior cortex; Mandibular canal; Panoramic X-ray;

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