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A Study of Mandibular Foramen and Mandibular Canal using Orthopantomograms.

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Abstract

îÊíº´Â õÅ 295ØÝÀÇ orthopantomogramÀ» Ò´ÖÆ¿¡ µû¶ó 6ᨱîÁö(ð¯ I øÄ), 7¡­12á¨(勇°
ÏØ), 13¡­18á¨(勇² øÄ), 19¡­30á¨( 𦉇ÏØ), 31¡­40á¨(勇´ÏØ ),41¡­50á¨(𦋙ÏØ), 50ᨠì¤
ß¾(Á¦ ¥¶ ÏØ)ÀÇ 7ËÁ øÄ À¸·Î ÝÂ×¾ÇÏ¿© ù»äÉÍî°ú ÎáùêçÍØü°úÀÇ Î¼Ìõ, ù»äÉηÀÇÀÇ ÀÌ·ç´Â ÊÇ
Óø, ù»äÉÊÇÀÇ ÊÇÓø, ÔéÍî°ú öÍ䳿ÍÀÇ Î¼Ìõ¸¦ ðàÞÛÇÏ¿© ´ÙÀ½°ú °°Àº Ì¿Íý¸¦ ¾ò¾ú´Ù.
1. ù»äÉÍîÀº ÎáùêøÁØü×ËØüæÅíþàÊ¿¡ ÓßÇØ 12ᨱîÁö 1.94§® ù»Û°¿¡ ðíî¤ÇÏ¿´À¸¸ç, 13ᨰ¡ Áö
³ª¸é¼­ 1.26§® ß¾Û°¿¡ ðíî¤ÇÏ¿´°í, 19á¨ì¤ß¾¿¡¼­ 2.79§® ß¾Û°À¸·Î å´ÊÎ ñòÊ¥ÇÏ¿´´Ù. 6ᨱîÁö
´Â 78.6%¿¡¼­ ù»Û°¿¡ ðíî¤ÇÏ¿´À¸¸ç 7á¨ì¤ý­ Â÷Ãû Êõá´ÇÏ¿© 13¡­18ᨠ»çÀÌ¿¡´Â 63.1%°¡ ß¾
Û°¿¡ ðíî¤ÇÏ°í 15.2%°¡ ù»Û°¿¡ ðíî¤Çϸç 19á¨ì¤ß¾ à÷ìÑÀÌ µÇ¾î¼­´Â 70.0%°¡ ß¾Û°¿¡ ðíî¤ÇÏ
¸ç 25.0%°¡ ÎáùêøÁØü°ú ÔÒìéÇÑ êÈöÇ¿¡ ðíî¤ÇÏ¿´´Ù.
2. ù»äÉηÀÌ ÀÌ·ç´Â ÊÇÓø(°¢µµ)´Â 6ÔÁ(µ¶)±îÁö 142.82¡Æ, 12ᨱîÁö 142.09¡Æ·Î ×¾ÞÄÇßÀ¸³ª,
13ᨰ¡ Áö³ª¸é¼­ 18ᨱîÁö 139.34¡Æ 19á¨ì¤ß¾¿¡¼­ 141.14¡Æ·Î å´ÊÎ Êõá´ÇÏ´Ù°¡ 50á¨ì¤ß¾¿¡¼­
143.89¡Æ·Î å´ÊÎ ñòÊ¥ÇÏ¿´´Ù.
3. ù»äÉÊÇÀÌ ÀÌ·ç´Â ÊÇÓø´Â 6ᨱîÁö 125.82¡Æ, 12ᨱîÁö 123.18¡Æ, 18ᨱîÁö 124.06¡Æ, 30á¨
±îÁö 120.45¡Æ, 40ᨱîÁö 121.12¡Æ, 50ᨱîÁö 121.63¡Æ, 60ᨱîÁö 121.24¡Æ·Î å´ÊÎ Êõá´ÇÏ´Â
ÌËú¾À» ³ªÅ¸³Â´Ù.
4 ÍîÀº 6ᨱîÁö´Â ð¯ìéá³Ï¿öÍÝ»êÈ¿¡¼­ 57.2%·Î °¡Àå ¸¹¾ÒÀ¸³ª 7¡­129, 13¡­18ᨠ±îÁö´Â
ÊÀÊÀ 59.6%¿Í 48,9%·Î ð¯ìéá³Ï¿öÍ¿Í ð¯ì£á³Ï¿öÍ»çÀÌ¿¡¼­ °¡Àå ¸¹Àº â¦ö·¸¦ º¸¿´°í, 19á¨
ì¤ß¾¿¡¼­´Â 47.7%·Î ð¯ì£á³Ï¿öÍÝ»êÈ¿¡¼­ °¡Àå ³ôÀº ×ËÀ» º¸¿´´Ù.
#ÃÊ·Ï#
The mandibular canal must be considered carefully during surgical treatment,
especially surgical extraction of the impacted tooth and intraosseous implant because it
contains the important inferior alveolar nerve arid vessels. The author investigated the
curvature of the mandibular canal, the positional frequency of mandibular foramen to the
occlusal plane and gonial angle and the positional frequency of she mental (foramen to
thin tooth site using orthopantom-ograms.
The materials consisted of 295 orthopantomograms divided into seven groups ranging
from the first decade to 6th. decade.
The results were as follows :
1. The position of mandibular foramen was most frequently below occlusal plane in
Group I(78.6%) and Group ¥± (71.2%), above occlusal plane in Group ¥² (63.0%), Group
¥³ (71.1%), Croup ¥´ (57.6%), Group (76.7%) and Group ¥¶ (70.0%).
2. The curvature of mandibular canal was 142.82¡Æ in Group ¥°, 142.09¡Æ in Group ¥±,
139.34¡Æ in Croup ¥², 141.48¡Æ In Group ¥³, 138.45¡Æ in Group ¥´, 140.77¡ÆIn Group ¥µ
and 143.89¡Æin Croup ¥¶.
3. The goniai angle was 125.82¡Æ in Group ¥°, 123.18¡Æ in group ¥±, 124.06¡Æin Group
¥², 120.45¡Æ In Group ¥³, 121.12¡Æ in Group ¥´, 121.63¡Æ in Group ¥µ and 121.24¡Æ in
Group ¥¶.
4. The position of The mental foramen was most frequently below the apex of
mandibular first premolar In Group ¥° (57.2%), between The apex of mandibular first
and second premolar in Group ¥± (59.6%) and Group ¥² (48.9%), And below the ,apex of
mandibular second premolar In Group ¥³ (39.2%), Group ¥´ (48.5%) Group ¥µ (46.7%)
and Group ¥¶ (56.4%).

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