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MRI study of temporomandibular joint disorder in orthodontic patients

Korean Journal of Orthodontics 2000³â 30±Ç 2È£ p.235 ~ 243
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±èÅ¿ì/Tae Woo Kim º¯Àº¼±/¹é½ÂÇÐ/À念ÀÏ/³²µ¿¼®/¾ç¿ø½Ä/Eun Sun Byun/Seung Hak Baek/Young Il Chang/Dong Seok Nahm/Won Sik Yang

Abstract

kabstract :
ÃøµÎÇϾǰüÀýÀÇ ÀÚ±â°ø¸í¿µ»ó(MRI)Àº ÇϾǰúµÎ¿Í °üÀý¿øÆÇ(disc)ÀÇ °ü°è¸¦ Àß º¸¿©Áֱ⠶§
¹®¿¡ °üÀý³»ÀåÁõ(internal derangement)ÀÇ Áø´ÜÀ» À§ÇØ ¸Å¿ì À¯¿ëÇÏ´Ù. À̹ø ¿¬±¸ÀÇ ¸ñÀûÀº
¼­¿ï´ëÇб³ Ä¡°úº´¿ø ±³Á¤°ú¿¡ ³»¿øÇÑ ÃøµÎÇϾǰüÀý Àå¾Ö°¡ ÀǽɵǴ ȯÀÚµéÀÇ MRI ÀڷḦ
Æò°¡ÇÏ¿© °üÀý ³»ÀåÁõÀÇ À¯¹«, ¹ß»ýºóµµ ¹× ½Éµµ¸¦ ÆľÇÇÏ´Â °ÍÀÌ´Ù. MRI¸¦ ÃÔ¿µÇÑ Ç¥º»Àº
³²ÀÚ 10¸í, ¿©ÀÚ 40¸íÀ¸·Î ÃÑ 50¸íÀ̾ú°í Æò±Õ ³ªÀÌ´Â 22.9¼¼¿´´Ù, Àüü 50¸íÁß¿¡ 43¸í¿¡¼­
positive findingÀÌ °üÂûµÇ¾ú´Ù. Positive findingÀ» ³ªÅ¸³½ ȯÀÚ Áß¿¡¼­ Àü¹æ°üÀý¿øÆǺ¯À§
(anterior disc displacement : ADD)´Â ºñÁ¤º¹¼ºÀÌ 56%·Î °¡Àå ¸¹¾ÒÀ¸¸ç, ¾çÂÊ °üÀý¿¡¼­ µ¿
½Ã¿¡ ÀϾ °æ¿ì°¡ 65%·Î °¡Àå ¸¹¾Ò´Ù. Positive findingÀ» ³ªÅ¸³½ ȯÀÚ¸¦ Angle ºÐ·ù½Ã,
¥±±Þ 1·ù ºÎÁ¤±³ÇÕ È¯ÀÚ°¡ 39.6%, ¥±±Þ2·ù ºÎÁ¤±³ÇÕ È¯ÀÚ°¡ 2.3%·Î ¥±±Þ ºÎÁ¤±³ÇÕÀÌ 41.9%
·Î °¡Àå ¸¹¾Ò°í, ¥°±Þ ºÎÁ¤±³ÇÕ È¯ÀÚ´Â 37.2%, ¥²±Þ ºÎÁ¤±³ÇÕ È¯ÀÚ°¡ 18.6%, È®ÀÎ ¾ÈµÈ °æ
¿ì°¡ 2.3%¿´´Ù. Positive findingÀ» ³ªÅ¸³½ ȯÀÚÁß¿¡¼­ ¾È¸é ºñ´ëĪ ȯÀÚ´Â 8.6%, °³±³ ȯÀÚ
´Â 55.8%¿´´Ù. °á·ÐÀûÀ¸·Î ÃøµÎÇϾǰüÀýÀÇ °üÀý ³»ÀåÁõÀ» °¡Áø ȯÀÚ¿¡¼­ ¥±±Þ ºÎÁ¤±³ÇÕÀÌ
Â÷ÁöÇÏ´Â ºñÀ²ÀÌ ¸Å¿ì Å©´Ù°í ÇÒ ¼ö ÀÖ´Ù. °³±³³ª ¾È¸é ºñ´ëĪÀº ÃøµÎÇϾǰüÀý Àå¾Ö·Î ÀÎÇÑ
º¸»óÀû ¶Ç´Â ºñº¸»óÀûÀÎ º¯Çü¿¡ ÀÇÇØ ³ªÅ¸³¯ ¼ö ÀÖÀ¸¸ç ÅðÇ༺ °üÀý ÁúȯÀ¸·Î ÁøÇàµÇ´Â °ú
Á¤ Áß ¾È¸é °ñ°Ý °³Á¶ÀÇ °á°ú·Î º¸ÀδÙ. ±×·¯¹Ç·Î °³±³ ¹× ¾È¸é ºñ´ëĪÀÌ Àִ ȯÀڴ±³Á¤
Ä¡·á ½ÃÀÛ Àü¿¡ ÃøµÎÇϾǰüÀýÀÇ ÀÌ»ó À¯¹«¸¦ MRI·Î È®ÀÎ(screening)ÇÒ °ÍÀÌ ±ÇÀåµÈ´Ù. ÃøµÎ
ÇϾǰüÀý Àå¾Ö°¡ ÀÖ´Â °æ¿ì ±³Á¤ Ä¡·á ÈÄ¿¡µµ Àç¹ßÀÇ °æÇâÀÌ Å©°í ÃøµÎÇϾǰüÀý¿¡ ´ëÇÑ °è
¼ÓÀûÀÎ °üÂûÀÌ ÇÊ¿äÇϹǷΠ°¨º°Áø´ÜÀÌ ÇʼöÀûÀÌ´Ù.
#ÃÊ·Ï#
-Abstract-
Magnetic resonance imaging(MRI) of the temporomandibular joint(TMJ) is very useful
method to diagnose internal derangement of the TMJ because of its high specificity for
identification of condyle-disc relationships. The purpose of this study was to evaluate
the existence, incidence and severity of internal derangement of th TMJ by the MRI of
patients who are suspected to have TMJ disorder. MRI sample was composed of 50
subjects(10 males, 40 females) and the mean age was 22.9 years. 43 subjects of the
sample were found to have positive findings. 56% of the subjects with positive findings
had ADD(anterior disc displacement) without reduction, and 65% had internal
derangement of bilateral joints. Distributions in the types of malocclusion in patients
with positive findings, the Angle's classification had shown : the largest 41.9% for Cl ¥±
(39.6 for Cl ¥± div 1 and 2.3% for Cl ¥± div 2), 37.2% for Cl ¥², and 2.3% for the
nuidentified. 8.6% of the subjects with positive findings had facial asymmetry and 55.8%
had openbite. We can conclude that the percentage of CI ¥± is the highest in patients
with internal derangement of the TMJ. Openbite or facial symmetry is considered to be
uncompensated or compensated deformity which results from facial skeleton remodeling
in the process of degenerative joint disease(DJD) due to TMJ degeneration. Therefore it
is recommended to screen the patients with facial asymmetry or openbite by MRI before
the beginning of orthodontic treatment. Differential diagnosis is essential because the
tendency of relapse is high after the orthodontic treatment and continuous observation of
TMJ is needed in patients with TMJ disorder.

Å°¿öµå

MRI; ÃøµÎÇϾǰüÀý; ÅðÇ༺ °üÀý Áúȯ; °üÀý ³»ÀåÁõ; MRI; Temporomandibular joint; Degenerative joint disease; Internal derangement;

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