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Mechanical Analysis of the Pattern of Movement during Retraction of Maxillary Incisors by Space Closing Loop
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À±¿µÁÖ ( ) - Á¶¼±´ëÇб³
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KMID : 0361919950250020143
Abstract
ÀÌ ¿¬±¸´Â ´Ù¾çÇÑ ÇüÅÂÀÇ closing loopsÀÇ activation¿¡ µû¸¥ Ä¡ÁÖÁ¶Á÷¿¡¼ÀÇ ÀÀ·ÂºÐÆ÷¸¦ Æò°¡ÇÏ°í »ó¾Ç ÀýÄ¡ÀÇ À̵¿ ¾ç»óÀ» ¿¹ÃøÇϱâ À§ÇÏ¿© 3Â÷¿ø À¯ÇÑ¿ä¼Ò¹ý¿¡ ÀÇÇÏ¿© ½ÃÇàµÇ¾ú´Ù. µ¿½Ã¿¡ »ó¾Ç ÀýÄ¡ÀÇ °ßÀνà »ç¿ëµÇ´Â bull loop, key-hole loop, T-loop,
combination
loop ±×¸®°í asymmetrical T-loopµµ 3Â÷¿ø À¯ÇÑ¿ä¼Ò¹ý¿¡ ÀÇÇØ ºÐ¼®µÇ¾ú´Ù.
ÀÌ ¿¬±¸·ÎºÎÅÍ ¾ò¾îÁø °á°ú´Â ´ÙÀ½°ú °°´Ù.
1. ¿©·¯°¡Áö ÇüÅÂÀÇ °ø°£Æó¼â¿ë ·çÇÁÁß bull loop¿¡¼ °¡Àå Å« ¼öÆò·ÂÀ» ³ªÅ¸³ÂÀ¸¸ç, key-hole, combination loop, T-loop¼øÀ̾ú´Ù. ÀÌµé ¸ðµÎ Ä¡¾ÆÀ̵¿ÀÇ ¾ç»óÀº uncontrolled tippingÀ» ³ªÅ¸³Â´Ù.
2. Asymmetrical TMA T-loop¿¡¼´Â ¼öÆò·ÂÀÌ ÇöÀúÈ÷ °¨¼ÒÇÏ¿´À¸¸ç, ÀýÄ¡ºÎÀ§¿¡ ÇÔÀÔ·ÂÀÌ ³ªÅ¸³µ´Ù.
3. ÀýÄ¡ºÎ¿¡¼ torqueÀÇ Áõ°¡¿¡ µû¶ó ¸ð¸àÆ®°¡ Áõ°¡ÇÏ¿´°í, ¼±ÇüÀûÀÎ Áõ°¡¸¦ º¸¿´´Ù.
4. ¸ð¸àÆ®ÀÇ Áõ°¡¿¡ µû¶ó Ãʱâ À̵¿¾ç»óÀº uncontrolled tipping¿¡¼ Ä¡±ÙÀ̵¿ ¾ç»óÀ¸·Î º¯ÈµÇ¾ú´Ù.
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