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A TOMOGRAPHIC STUDY OF CONDYLAR POSITION IN ASYMPTOMATIC SUBJECTS WITH MALOCCLUSION

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Abstract

ÃøµÎÇϾǰüÀýÀÇ ÀÓ»óÁõ»óÀÌ ¾ø´Â Angle ¥°, ¥±, ¥²±Þ ºÎÁ¤±³ÇÕÀÚ °¢ 15¸í¾¿ ÃÑ 45¸í(90
ÃøµÎÇϾǰüÀý)À» ´ë»óÀ¸·Î À̵鿡 ´ëÇÏ¿© °¢°¢ µÎºÎÃà¹æÇâ ¹æ»ç¼±»çÁø°ú Á߽ɱ³ÇÕÀ§, Áß½É
À§ ¹× 1 inch °³±¸½ÃÀÇ Ãø¹æ´ÜÃþ»çÁøÀ» ÃÔ¿µÇÏ°í, ÇÏ¾Ç °úµÎÀÇ À§Ä¡¿¡ °ü·ÃµÈ Ç׸ñµéÀ» ºñ
±³ ºÐ¼®ÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ÇÏ¾Ç °úµÎÀÇ ¼öÆò°æ»çµµ´Â Angle ¥°, ¥±, ¥²±Þ ºÎÁ¤±³ÇÕ±º¿¡¼­ °¢°¢ 17.55¡¾5.51¡Æ,
13.33¡¾8.85¡Æ, 16.25¡¾6.60¡Æ¸¦ ³ªÅ¸³ÂÀ¸¸ç, ºÎÁ¤±³ÇÕ±º »çÀÌÀÇ Åë°èÇÐÀû À¯ÀǼºÀº ¾ø¾ú´Ù.
¶ÇÇÑ ¿ìÃø ºÎÀ§ÀÇ Æò±ÕÄ¡´Â 16.62¡¾7.23¡Æ, ÁÂÃøºÎÀ§ÀÇ Æò±ÕÄ¡´Â 14.80¡¾7.33¡Æ·Î¼­ ¿ìÃø ºÎ
À§ÀÇ Æò±ÕÄ¡°¡ ÁÂÃø ºÎÀ§ÀÇ Æò±ÕÄ¡º¸´Ù ´Ù¼Ò Å©°Ô ³ªÅ¸³µ´Ù.
2. Àý´Ü ±íÀÌ´Â Angle ¥°, ¥±, ¥²±Þ ºÎÁ¤±³ÇÕ±º¿¡¼­ °¢°¢ 8.13¡¾1.61§¯, 3.05¡¾3.80§¯, 7.75
¡¾2.19§¯À̾úÀ¸¸ç, P<0.01 ¼öÁØ¿¡¼­ ¥°±Þ°ú ¥±±Þ, ¥²±Þ°ú ºÎÁ¤±³ÇÕ±ºÀº Åë°èÇÐÀû À¯ÀǼºÀ»
³ªÅ¸³»¾ú´Ù.
3. °üÀý¿ÍÀÇ °í°æÀº Angle ¥°, ¥±, ¥²±Þ ºÎÁ¤±³ÇÕ±º¿¡¼­ °¢°¢ 8.67¡¾3.06§®, 9.16¡¾2.57§®,
8.93¡¾2.38§®À̾úÀ¸¸ç, °üÀý¿ÍÀÇ Æø°æÀº °¢°¢ 19.90¡¾2.80§®, 19.48¡¾3.83§®, 20.36¡¾4.82§®À̾ú
´Ù.
4. ÇÏ¾Ç °úµÎÀÇ °í°æ°ú Æø°æÀº °¢°¢ Æò±Õ 5.11¡¾1.16§®, 11.20¡¾2.26§®À̾ú´Ù.
5. Á߽ɱ³ÇÕÀ§¿¡¼­ »ó¹æ°üÀý°øÆøÀÌ 3.42¡¾1.42§®·Î¼­ °¡Àå Å©°Ô ³ªÅ¸³µÀ¸¸ç, Àü¹æ°üÀý°øÆø
Àº 2.94¡¾1.95§®, ÈĹæ°üÀý°øÆøÀº 2.64¡¾1.19§®À̾ú´Ù. Áß½ÉÀ§¿¡¼­´Â Àü¹æ°üÀý°øÆøÀÌ 3.86¡¾
2.17§®·Î¼­ °¡Àå Å©°Ô ³ªÅ¸³µÀ¸¸ç, »ó¹æ °üÀý°øÆøÀÌ 3.64¡¾3.68§®, ÈĹæ°üÀý°øÆøÀÌ 1.88¡¾0.77
§®À̾ú´Ù.
6. Áß½ÉÀ§¿¡¼­ Á߽ɱ³ÇÕÀ§·ÎÀÇ º¯À§´Â Æò±ÕÀü¹æ º¯À§·®ÀÌ 1.10¡¾1.04§®, ÇϹ溯À§·®ÀÌ 0.24
¡¾0.97À̾ú´Ù 1 inch °³±¸½Ã ÇÏ¾Ç °úµÎ´Â °üÀýÀ¶±â·ÎºÎÅÍ ÈÄÇϹæ(ÈĹæ 2.49¡¾2.49§®, ÇϹæ
1.17¡¾1.34§®)º¯À§¸¦ º¸¿´°í, À̶§ ÈĹ溯À§·®Àº I±Þ°ú ¥²±Þ ºÎÁ¤±³ÇÕ±º°ú ¥±±Þ°ú ¥²±Þ ºÎÁ¤
±³ÇÕ±º¿¡¼­ P<0.01 ¼öÁØ¿¡¼­ Åë°èÇÐÀû À¯ÀǼºÀ» ³ªÅ¸³»¾ú´Ù.
#ÃÊ·Ï#
The author analysed tomograms and submento-vertex radiograms of 90
temporomandibular joints from 45 asymptomatic young adults. 15 had Angle class I
malocclusion, 15 class ¥± and 15 class ¥². Corrected lateral tomograms were obtained in
three condylar positions; centric occlusion, centric relation and 1 inch mouth opening.
The condylar angulation, depth of cut, joint spaces were analysed in each radiogram.
The obtained results were as follows;
1. The mean condylar angulation in Angle class ¥°, ¥±, ¥² group was 17.55¡¾5.51¡Æ,
13.33¡¾8.85¡Æ, 16.25¡¾6.60¡£, respectively, and there was no significant difference in each
group. The mean condylar angulation of right side (16.62¡¾7.23¡£) was larger than left
side (14.80¡¾7.33¡£).
2. The mean depth of cut in Angle class ¥°, ¥±, ¥² group was 8.13¡¾1.61§¯, 3.05¡¾3.80
§¯, 7.75¡¾2.19§¯, respectively. Angle class I and class ¥± group revealed significant
difference in measurement(p<0.01).
3. The mean height of articular fossa in Angle class ¥°, ¥±, ¥² group was 8.67¡¾3.06
§®, 9.61¡¾2.57§®, 8.93¡¾2.83§®, respectively. And the mean width of articular fossa was
19.90¡¾2.80§®, 19.4¡¾3.83§®, 20.36¡¾4.82§®, respectively.
4. The mean height and width of condylar head was 5.11¡¾1.16§®, 11.20¡¾2.26§®,
respectively.
5. In centric occlusion, the superior joint space was the largest (3.42¡¾1.42§®), followed
by anterior joint space (2.94¡¾1.95§®) and the posterior joint space (2.64¡¾1.19§®). In
centric relation, the anterior joint space was the largest (3.86¡¾2.17§®), followed by the
superior joint space (3.64¡¾3.68§®) and the posterior joint space (1.18¡¾0.77§®).
6. The displaced measurement from centric relation to centric occlusion was 1.10¡¾1.04
§® anteriorly and 0.24¡¾0.97§® inferiorly. In 1 inch mouth opening state, the condylar
head displaced posteroinferiorly (2.49¡¾2.49§® posteriorly, 1.17¡¾1.34§® inferiorly) from the
apex of articular eminence. And Angle class I and ¥± group, Angle class ¥± and ¥²
group revealed significant difference in posterior measurement, respectively (p<0.01).

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