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Lateral Cephalometic Assessment in Patients with Condylar Resorption

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ÇãÀ±°æ ( Hur Yun-Kyung ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°­³»°úÇб³½Ç
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ÃÖÀç°© ( Choi Jae-Kap ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°­³»°úÇб³½Ç

Abstract

ÀÌ ³í¹®Àº 2³â µ¿¾È °æºÏ´ëÇк´¿ø ±¸°­³»°ú¸¦ ÅΰüÀý ÁúȯÀ» ÁÖ¼Ò·Î ³»¿øÇÑ È¯ÀÚ Áß¿¡ °úµÎÈí¼ö°¡ Àִ ȯÀÚµé·Î¼­ ÀÚ±â°ø¸í¿µ»ó, Æijë¶ó¸¶, Ãø¹æȾµÎ°³»ó ±×¸®°í Ãø¹æ µÎºÎ¹æ»ç¼± »çÁøµéÀ» ¸ðµÎ ÃÔ¿µÇÑ 34¸íÀÇ È¯Àڵ鸸 ¼±ÅÃÇÏ¿©, Ãø¹æµÎºÎ¹æ»ç¼± °èÃøÀ¸·Î °úµÎÈí¼ö¿Í ¾È¸éºÎ °ñ°ÝÇüÅÂÀÇ ¿¬°ü¼ºÀ» Çѱ¹ÀÎ Á¤»ó ±³ÇÕÀÚµéÀÇ Æò±ÕÄ¡¿Í ºñ±³ Á¶»çÇÏ¿´°í, ÀüÄ¡ºÎ °³±³ÇÕÀÌ µ¿¹ÝµÈ ±º°ú °³±³ÇÕÀÌ ¾ø´Â ±ºÀ» ¼­·Î ºñ±³ÇÏ¿´À¸¸ç, ¶ÇÇÑ ÀÚ±â°ø¸í¿µ»óÀ¸·Î °úµÎÈí¼ö¿Í °üÀý¿øÆǺ¯À§¿ÍÀÇ °ü·Ã¼ºÀ» Á¶»çÇÑ °á°ú °úµÎÈí¼ö°¡ Àß ¹ß»ýµÉ ¼ö Àִ ȯÀÚµéÀº ´ÙÀ½°ú °°Àº Ư¡À» °¡Á³´Ù: (1) 34¸íÁß 1¸í¸¸ÀÌ ³²ÀÚ·Î ¿©ÀÚ°¡ ´ëºÎºÐÀ̾ú´Ù, (2) ¿¬·É´ë´Â ¾î´À ¿¬·É¿¡¼­³ª ¹ß»ý°¡´ÉÇϳª 10´ë¿Í 20´ë¿¡¼­ ¹ßº´·üÀÌ ³ô¾Ò´Ù, (3) ȯÀÚµéÀº ³ôÀº ÇϾÇÇÏ¿¬°¢°ú ³ôÀº ÇϾǰ¢À» °¡Á³´Ù. (4) ÇϾÇÁöÀÇ ³ôÀÌ´Â ÀÛ°Ô ³ªÅ¸³µÀ¸¸ç, (5) Àü¾Ç°¢ ÇÔ¿ä(antegonial notch)°¡ ´ëüÀûÀ¸·Î Àú¸íÇÏ¿´´Ù, (6) ±¸Ä¡ºÎ ±³ÇÕÀº Angle¡¯s Class I °ü°è°¡ ¸¹¾ÒÀ¸³ª, ANB°¢µµ´Â Æò±Õ 5.54µµ·Î ÇϾÇÀÇ ÈÄÅ𸦠³ªÅ¸³»¾ú´Ù. (7) °úµÎÈí¼ö´Â ÇϾÇÇÏ¿¬°¢ÀÌ ³·Àº °æ¿ì¿¡´Â °ÅÀÇ ¹ß»ýÇÏÁö ¾Ê¾Ò´Ù, (8) Åë°èÇÐÀû À¯ÀÇÇÑ Â÷ÀÌ´Â ¾ø¾úÀ¸³ª °³±³ÇÕÀÌ µ¿¹ÝµÈ ±ºÀÌ °³±³ÇÕÀÌ ¾ø´Â ±ºº¸´Ù hyperdivergentÇÑ °ñ°ÝÇüŸ¦ °¡Á³´Ù, (9) ÀÚ±â°ø¸í¿µ»ó»çÁø¿¡¼­ °úµÎÈí¼ö´Â ´ëºÎºÐ ºñÁ¤º¹¼º °üÀý¿øÆÇÀüÀ§¿Í ¿¬°üµÇ¾î ÀÖ¾ú´Ù. ¼öÁ÷Àû °ñ°Ý¼ºÀåÀÌ Å« °æ¿ì °üÀý¿øÆÇ Àü¹æº¯À§¿Í °úµÎÈí¼öÀÇ ¿øÀÎÀÌ µÉ ¼ö ÀÖÀ¸¸®¶ó »ý°¢µÈ´Ù.

Aims: The present study investigated the relationship between condylar resorption and craniofacial skeleton types (especially vertical relationships), the differences of craniofacial skeleton types between with open bite group and without open bite group, and the associations of anterior disc dislocation with or without reduction to condylar resorption with MRI.
Patients selection and methods: Clinical examination, magnetic resonance imaging (MRI), panorama, lateral transcranial and lateral cephalometric radiographs in 34 patients with condylar resorption were used to investigate this relationship.
Results and Conclusions: Patients with the following specific facial morphologic characteristics appear to be most susceptible to condylar resorption: (1) females were predominant, (2) patients¡¯ age ranged from 12 to 50 years old with a strong predominance for 2nd and 3rd decades, (3) patients had high mandibular plane angle and high gonial angle, (4) patients had decreased vertical height of the ramus, (5) patients had generally significant antegonial notch, (6) patients had predominance of Class I occlusal relationship with or without open bite but mandible was retruded as mean ANB 5.54 degrees, (7) condylar resorption rarely occurs in lower mandibular plane angle facial types, (8) although no statistically significant difference was found, the open bite group had a tendency more hyperdivergent skeletal pattern than the non open bite group, and (9) imaging demonstrates from small resorbing condyles to idiopathic condylar resorption and TMJ articular disc dislocations. Thus, morphologic features of patients with vertical discrepancies may represent a risk factor for the development of condylar resorption.

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Condylar resorption;Open bite;Disc dislocation;Vertical discrepancy

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