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ANALYSIS OF STRESS AND DISTORTION DISTRIBUTION USING THE FINITE ELEMENT METHOD - EFFECTS OF THE CHIN CAP ON THE MANDIBLE -

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ÀÌ¿ëÈÆ ( Lee Yong-Hoon ) - ÀüºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
¹éº´ÁÖ ( Baik Byeong-Ju ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÀç°ï ( Kim Jae-Gon ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
¾ç¿¬¹Ì ( Yang Yeon-Mi ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
À̹ÎÁ¤ ( Lee Min-Jeong ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
°í¿µÇÑ ( Ko Young-Han ) - ÀüºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

µÎ°³¾È¸éºÎ¿¡¼­ ÇϾÇÀº Å»ý 4ÁÖ¿¡ ¹ß»ýÇϴ ù¹ø° ¾Æ°¡¹Ì±Ã¿¡¼­ ºÐÈ­µÇ¸ç ¸ÆÄÌ¿¬°ñÀ̶ó ¾Ë·ÁÁ® ÀÖ´Â ±ä ¸·´ë±â ¸ð¾çÀÇ ¿¬°ñÀÇ ¿ÜÃøºÎ¿¡¼­ °ñÈ­°¡ ½ÃÀ۵ȴÙ. ÀÌÈÄ ÇϾǰñÀº °ñÀÇ Ã·°¡¿Í Èí¼ö¿¡ ÀÇÇØ ¼ºÀå ¹ßÀ°ÇÏ°Ô µÈ´Ù. ÀÌ·± ÇϾǰñÀÇ ¼ºÀå ¹ßÀ°ÀÌ °úÇϰųª ºÎÁ·ÇÑ °æ¿ì »óÇϾǰñÀÇ ºÎÁ¶È­¿¡ ÀÇÇÑ ºÎÁ¤±³ÇÕÀÌ ¹ß»ýµÇ°Ô µÇ°í, À̸¦ 3±Þ ¶Ç´Â 2±Þ ºÎÁ¤±³ÇÕÀ̶ó ºÎ¸¥´Ù. 3±Þ ºÎÁ¤±³ÇÕÀÇ Ä¡·á¸¦ À§ÇØ Áö±Ý±îÁö ¸¹Àº ¹æ¹ýµéÀÌ »ç¿ëµÇ¾î ¿ÔÀ¸¸ç, ±×Áß °¡Àå ³Î¸® »ç¿ëµÇ¾îÁö´Â°ÍÀÌ À̸ðÀåÄ¡ÀÌ´Ù. Distraction osteogenesis´Â °­ÇÑ ÈûÀ̳ª ¼ö¼ú¿¡ ÀÇÇØ ºÐ¸®µÈ µÎ °³ÀÇ °ñÇ¥¸é »çÀÌ¿¡¼­ »õ·Î¿î ½Å»ý°ñÀÌ Çü¼ºµÇ´Â ÀÏ·ÃÀÇ »ý¹°ÇÐÀûÀÎ °úÁ¤À» ¸»ÇÑ´Ù. Distraction force°¡ callus tissue¿¡ ÀÛ¿ëµÇ¾î °ñÀÌ ºÐ¸®µÇ¸é °ñ°ú ¿¬Á¶Á÷¿¡ °¡ÇØÁö´Â ½ÅÀå·ÂÀÌ »õ·Î¿î °ñ »ý¼ºÀ» ÀÚ±ØÇÏ°Ô µÈ´Ù. À̹ø ¿¬±¸ÀÇ ¸ñÀûÀº 3Â÷¿ø À¯ÇÑ¿ä¼Ò modelÀ» ÀÌ¿ëÇÏ¿© À̸ðÀåÄ¡ÀÇ ÇÏÁß¿¡ ´ëÇÑ ÇϾǰñÀÇ ÀÀ·ÂºÐÆ÷¸¦ ¾Ë¾Æº¸°í, ÇϾǰñ Àý°³ (mandibular midline distraction) ÈÄ °­Á¦º¯Çü¿¡ ´ëÇÑ ÀÀ·ÂºÐÆ÷¸¦ ¾Ë¾Æº¸´Â °ÍÀÌ´Ù.

The aims of this study were analyze the amount of stress condition when the traction force was applied to the condyle head from the chin area of mandible and amount of distortion condition when intended 0.5 mm distraction distance from surface or one point of dissected midline of mandible. For this study, 3D finite element analysis were performed. The following results were obtained : 1. When traction force of 500 g was applied to the condyle head from the chin area, condylar neck area showed the greatest amount of stress and coronoid process was the least amount of stress area. For the amount of distortion condition, infra dental area showed the greatest. 2. When 0.5 mm of intended surface distortion was applied after dissection of mid-mandible area, base anterior area showed the greatest amount of stress but the least stress area was coronoid process. For the amount of distortion, infra dental, menton area showed the greatest amount. 3. One point distortion was applied after dissection of mid-mandible area, ramus posterior area showed the greatest amount of stress and menton area were the least stress condition. For the amount of distortion, menton area showed the greatest amount of distortion condition.

Å°¿öµå

ÀÀ·ÂºÐÆ÷; À¯ÇÑ¿ä¼Ò¹ý; À̸ðÀåÄ¡
Stress distribution; Finite element method; Chin cap

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