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A RADIOGRAPHIC STUD ON THE MANDIBULAR CANAL

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Abstract

ÀúÀÚ´Â ÇϾDZ¸Ä¡ºÎ¿¡ ´ëÇÑ ¿Ü°úÀû ½Ã¼ú½Ã ÁÖÀÇÇÏ¿©¾ß ÇÒ ±¸Á¶¹°ÀÎ ÇϾǰü¿¡ ´ëÇÑ ¹æ»ç¼±
ÇÐÀû °Ë»çÀÇ À¯¿ë¼ºÀ» ³ôÈ÷°íÀÚ 12¿¹ÀÇ °ÇÁ¶ ÇϾǰñÀ» ´ë»óÀ¸·Î orthopantomogramÀ» ÃÔ¿µ
ÇÏ¿© ÇϾǰ¢ ¹× ÇϾÇÁö¿¡ ´ëÇÑ ÇϾǰüÀÇ °¢À» °üÂûÇÏ°í 3¿¹ÀÇ °ÇÁ¶ ÇϾǰñÀ» ´ë»óÀ¸·Î ÃÔ¿µ
¹æ¹ý¿¡ µû¸¥ »ó ¼öÁ÷È®´ëÀ², Ä¡¹Ð°ñÀÇ µÎ²² ¹× ÇϾǰüÀÇ À§Ä¡ µîÀ» °üÂûÇϱâ À§ÇØ ±¸³» Æò
ÇàÃÔ¿µ, OrthopantomogramÃÔ¿µ, ±³ÇÕÃÔ¿µ ¹× Àü»êÈ­´ÜÃþÃÔ¿µ µîÀ» ½ÃÇàÇÏ¿© ´ÙÀ½°ú °°Àº
°á·ÐÀ» ¾ò¾ú´Ù.
1. ÇϾÇÀÚ ¹× ÇϾǰü°ú ÇϾÇÀú°¡ ÀÌ·ç´Â °¢ÀÇ Æò±ÕÀº °¢°¢ 123.9¡Æ, 143.5¡Æ¿´À¸¸ç, Ä¡Á¶Á¦
»óÅ¿¡¼­ÀÇ µÎ ÀÚÀÇ Æò±ÕÀÌ Ä¡Á¶¿Í »óÅÂÀÇ °æ¿ì¿¡¼­ º¸´Ù ´õ ÄÇ´Ù.
2. Ä¡Á¶Á¤À¸·Î ºÎÅÍ ÇϾǰü »óº®±îÁöÀÇ ½ÇÃø°Å¸®¿¡ ´ëÇÑ Ä« ÃÔ¿µ¹ýÀÇ ¼öÁ÷È®´ëÀ²Àº ÆòÇà
ÃÔ¿µ¹ý 3.07%, Orthopantomogram 18.49%, Àü»êÈ­´ÜÃþÃÔ¿µ¹ý 0.27%À̾úÀ¸¸ç, °ÇÁ¶ ÇϾǰñ»ó
ÀÇ ±Ý¼ÓÆí°£ °Å¸®¸¦ ÀÌ¿ëÇÏ¿© »êÃâµÈ È®´ëÀ²À» Àû¿ëÇÏ¿© »êÁ¤µÈ Ä¡Á¶Á¤À¸·Î ºÎÅÍ ÇϾǰü »ó
º®±îÁö °Å¸®ÀÇ orthopantomogram»ó¿¡¼­ÀÇ È®´ëÀ²Àº 2.81%ÀÌ ¾ú´Ù.
3. ¿äÇÕÃÔ¿µ°ú ClarkÀÇ ¹ýÄ¢À» ÀÌ¿ëÇÑ ±¸³»Ç¥ÁØÃÔ¿µ¿¡¼­ ÇϾǰüÀÇ Çù-¼³Ãø À§Ä¡ÀÇ Æǵ¶Àº
¾î·Á¿ü°í Àü»êÈ­´ÜÃþÃÔ¿µ»ó¿¡¼­´Â 3Â÷¿øÀûÀÎ À§Ä¡ °üÂûÀÌ °¡´ÉÇÏ¿´´Ù.
4. Ä¡¹Ð°ñÀÇ µÎ²²´Â ÇϾǰñ ÇÏ¿¬¿¡¼­ °¡Àå µÎ²¨¿üÀ¸¸ç ÇùÃøÀÌ ¼³Ãø¿¡ ºñÇØ ¾à 6.59%Á¤µµ ´õ µÎ²¨¿ü´Ù.
#ÃÊ·Ï#
The purpose of this study is to improve the availabilities of radiographic technics as
diagnostic method related to mandibular canal in dental clinic.
For this study 12 dry mandibles were used and 12 orthopantomograms were taken for
measuring the gonial angle and the angle of mandibular canal to inferior border of
mandible.
12 sites located between the 1st premolar to the 3rd molar region of 3 dry mandibles
were selected randomly, for measuring the vertical image magnification rates on three
films; intraoral film, orthopantomogram , and computed tomogram, respectively and the
thickness of cortical bone, and for observing bucko-lingually and supero-inferiorly
location of the mandibular canal.
The acquired results were as follows:
1. The means of the genial angle and the angle of mandibular canal to inferior border
of mandible were 123.9o and 143.So And the two angles of dry mandible in alveolar
crest stage were sealer than in alveolar socket stage.
2. The vertical image length on intraoral film by paralleling technic was magnified by
3.07% on the average, the length on orthopantomogram by 18.49%, and the length on
computed tomogram by 0,27%.
3. Observation of the bucco-lingually positional relationship of the mandibular canal
was impossible by occlusal projection with the cross section technic and intraoral
standard projection with the Clack's rule, however, possible by computed tomogram.
4. The thickness of the cortical bone of mandible was thickest in inferior border, and
thicker by 6.59% at buccal side than at lingual side.

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