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Supernumerary Teeth in Monozygotic Twins

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Abstract

°úÀ×Ä¡ÀÇ ¹ß»ý ¿øÀÎ ¹× ºóµµ, Ä¡·á µî °úÀ×Ä¡¿¡ ´ëÇÑ ¸¹Àº ¼±ÇÐÀÇ ¿¬±¸°¡ ÀÖ¾úÀ¸³ª, ÇöÀç¿¡ À־µµ °úÀ×Ä¡ÀÇ ¹ß»ý ¿øÀÎÀº ¿©ÀüÈ÷ ¸íÈ®ÇÏÁö ¾ÊÀº »óÅÂÀÌ´Ù. Àüü Àα¸¿¡¼­ 0.15%~1.0%ÀÇ ¹ßº´·üÀ» º¸ÀÌ´Â °úÀ×Ä¡ÀÇ º´ÀηÐÀ¸·Î´Â °èÅë¹ß»ýÇÐÀû µ¹¿¬º¯ÀÌ(atavism), Ä¡¹èºÐ¿­·Ð(dichotomy theory), Ä¡¾ÆÆÇÀÇ ±¹¼ÒÀûÀÎ Áõ½Ä ±×¸®°í À¯Àü ¹× ȯ°æÀû ¿äÀεéÀÇ Á¶ÇÕ(unified etiologic explanation) µîÀÌ ÀÖ´Ù. µ¿ÀÏÇÑ ¼öÁ¤¶õÀ¸·ÎºÎÅÍ »ý±ä ½Ö»ý¾ÆÀÎ À϶õ¼º ½Ö»ý¾Æ´Â À¯ÀüÇÐÀûÀ¸·Î µ¿ÀÏÇÑ °³Ã¼ÀÌ´Ù. À̵鿡°Ô¼­ ³ªÅ¸³­ °úÀ×Ä¡¿¡ ´ëÇÑ º¸°í´Â °úÀ×Ä¡ÀÇ º´Àηп¡ ÀÖ¾î À¯ÀüÀûÀÎ ¿äÀÎÀÌ °­ÇÏ°Ô ÀÛ¿ëÇÔÀ» µÞ¹ÞħÇÒ ¼ö ÀÖ´Ù´Â ¸é¿¡¼­ Àǹ̸¦ °¡Áø´Ù. º» ¿¬±¸¿¡¼­´Â °æºÏ´ëÇб³ Ä¡°úº´¿ø ¼Ò¾ÆÄ¡°ú ¿Ü·¡¸¦ ³»¿øÇÑ 3½ÖÀÇ À϶õ¼º ½Ö»ý¾Æ¿¡¼­ ³ªÅ¸³­ °úÀ×Ä¡¸¦ °üÂûÇÏ¿´À¸¸ç, ÀÌ´Â À¯ÀüÀûÀÎ ¿øÀο¡ ÀÇÇÑ °úÀ×Ä¡ÀÇ ¹ß»ýÀ» µÞ¹ÞħÇÔ¿¡ Àǹ̰¡ ÀÖ¾î º¸°íÇÏ´Â ¹ÙÀÌ´Ù.

Although the first case of supernumerary teeth had been documented almost 20 centuries ago, the etiology of supernumerary teeth still remains unclear. The prevalence of supernumerary teeth in the general Asian population is between 2.7% and 3.4%. The pathogenesis of supernumerary teeth has been attributed to phylogenetic reversion(atavism), splitting of the tooth bud(dichotomy theory), locally induced hyperactivity of the dental lamina and a combination of genetic and environmental factors(unified etiologic explanation). This report describes 3 cases of monozygotic twins with mesiodens who visited the pediatric dental clinic of Kyungpook national university hospital, and this is significant to support genetic factors involoved in the development of supernumerary teeth.

Å°¿öµå

°úÀ×Ä¡; À϶õ¼º ½Ö»ý¾Æ; À¯Àü
Supernumerary teeth; Genetic factor; Monozygotic twin

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