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A study on the anterior tooth size discrepancies among orthodontic patients with varying malocclusions
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KMID : 0361920050350060420
Abstract
Bolton ºÐ¼®ÀÌ Ä¡¾ÆÅ©±â ºÎÁ¶È¸¦ ¿¹ÃøÇϱâ À§ÇØ ³Î¸® »ç¿ëµÇ°í ÀÖÁö¸¸ ±× Á¤È®µµ¿¡ ´ëÇؼ´Â Àǹ®ÀÌ Á¦±âµÇ¾î ¿Ô´Ù. ÀÌ¿¡ º» ¿¬±¸´Â ºÎÁ¤±³ÇÕÀÚ¸¦ ´ë»óÀ¸·Î ÇÏ¿© ½ÇÁ¦ ÀüÄ¡ºÎ ºÎÁ¶È°¡ ³ªÅ¸³ª´Â ¾ç»óÀ» Á¶»çÇÏ°í, ±×°Í¿¡ ¿µÇâÀ» ÁÖ´Â ¿äÀο¡ ´ëÇؼ Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù. ¿¬±¸´ë»óÀº ´Ù¾çÇÑ ºÎÁ¤±³ÇÕ (Class¥°, Class¥±, Class ¥² surgery)À» °¡Á³À¸¸ç, ±³Á¤Ä¡·á¸¦ ¸¶Ä£ 80¸íÀÇ È¯ÀÚµé·Î ±¸¼ºµÇ¾ú´Ù. Ä¡·á Àü ¸ðÇü, Ä¡·á ÈÄ ¸ðÇüÀ¸·ÎºÎÅÍ ¾ò¾îÁø ¼Â¾÷ ¸ðÇü, ±×¸®°í Ä¡·á ÀüÈÄ Ãø¸ð µÎºÎ X-¼± °èÃø»çÁøÀ» ºÐ¼®ÇÏ¿´À¸¸ç ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. Çѱ¹ÀÎ ºÎÁ¤±³ÇÕÀÚÀÇ ÀüÄ¡ºÎ Bolton ratio´Â BoltonÀÇ Ç¥º» ¹× Çѱ¹ÀÎ Á¤»ó±³ÇÕÀÚ Ç¥º»°ú ºñ±³ÇØ º¸¾ÒÀ» ¶§ Æò±Õ, Ç¥ÁØÆíÂ÷, ¹üÀ§°¡ ´Ù¼Ò Å©°Ô ³ªÅ¸³µ´Ù. ½ÇÁ¦ ÀüÄ¡ºÎ ºÎÁ¶È´Â »ó¾ÇÀÇ ºÎÁ·(deficiency)À» º¸ÀÌ´Â °æ¿ì°¡ »ó¾Ç °úÀ× (execess)À» º¸ÀÌ´Â °æ¿ìº¸´Ù ¸¹¾Ò´Ù. ÀüÄ¡ºÎ Bolton ratio·ÎºÎÅÍ ¿¹ÃøÇÑ ÀüÄ¡ºÎ ºÎÁ¶È´Â ¼Â¾÷ ¸ðÇüÀ» ÅëÇؼ ¾òÀº ½ÇÁ¦ ÀüÄ¡ºÎ ºÎÁ¶È¿Í ºñ±³ÇØ º¸¾ÒÀ» ¶§ Â÷À̸¦ º¸¿´´Ù (p<0.05). ¼ºº° ¹× ºÎÁ¤±³ÇÕ±ºÀº ½ÇÁ¦ ÀüÄ¡ºÎ ºÎÁ¶È¿¡ À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù (p>0.05). ¼öÁ÷ÇÇ°³¿Í »ó¾Ç Ä¡¾Æ Àý´Ü¿¬ µÎ²²´Â ½ÇÁ¦ ÀüÄ¡ºÎ ºÎÁ¶È¿Í »ó°ü°ü°è°¡ °ÅÀÇ ¾ø´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ´ÙÁßȸ±ÍºÐ¼® °á°ú ½ÇÁ¦ ÀüÄ¡ºÎ ºÎÁ¶È¿¡´Â Ä¡·á Àü ¸ðÇüÀÇ ÀüÄ¡ºÎ Bolton ratio, Ä¡·á ÈÄ »ó¾Ç ÀüÄ¡°¡ ±³ÇÕÆò¸é°ú ÀÌ·ç´Â °¢, Ä¡·á ÈÄ ÀýÄ¡°£°¢, Ä¡·á Àü »ó¾Ç ¿ìÃø ÃøÀýÄ¡ Æø°æ µîÀÇ ¿äÀÎÀÌ ±â¿©ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Bolton analysis is widely used to predict tooth size discrepancy, but its accuracy has been challenged. The purpose of this study was to describe true anterior tooth size discrepancies among orthodontic patients and to evaluate the factors that affect true anterior tooth size discrepancies. The subjects consisted of 80 patients with varying malocclusions (Class¥°, Class¥±, Class¥² and Class¥² surgery) who were treated orthodontically. Pre-treatment models. set-up models from post-treatment models, and lateral cephalometric radiographs were analyzed. The results were as follows. The means, the standard deviations, and ranges of anterior Bolton ratio in the present study were somewhat higher than those of Bolton¡¯s samples and Korean normal samples. The number of patients showing maxillary deficiency was larger than that of patients showing maxillary excess in view of true anterior discrepancies. There was a significant diffrence between anterior Bolton discrepancy from pre-treatment medels and true anterior discrepancy from set-up models (p<0.05). There was no significant difference in true anterior discrepancies among malocclusion groups (p>0.05). And there was also no significant difference between the male and female groups (p>0.05). Overbite and the incisal edge thickness of maxillary anterior theeth have little relationship with true anterior discrepancies. Multiple regression analysis showed that true anterior discrepancy was mainly determined by anterior Bolton ratio. upper incisor to occlusal plane angle after treatment. interincisal angle after treatment, and upper right lateral incisor width.
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ÀüÄ¡ºÎ Bolton ratio;ÀüÄ¡ºÎ Bolton ºÎÁ¶È;½ÇÁ¦ ÀüÄ¡ºÎ ºÎÁ¶È;Anterior Bolton ratio;Anterior Bolton discrepancy;True anterior discrepancy
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