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A STUDY ON THE FEATURES OF MESIODENS AND THE RESOLUTION RATE OF COMPLICATIONS AFTER THE EXTRACTION OF MESIODENS

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ÀüÀº¹Î ( Jun Eun-Min ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¿µÁø ( Kim Young-Jin ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÇöÁ¤ ( Kim Hyun-Jung ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
³²¼øÇö ( Nam Soon-Hyeun ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÅ¿Ϡ( Kim Tae-Wan ) - °æºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

»ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡´Â È¥ÇÕÄ¡¿­±â ¹× ¿µ±¸Ä¡¿­±â ¾Æµ¿¿¡¼­ ¸¹Àº º´¹ßÁõÀ» ¾ß±âÇÑ´Ù. º» ¿¬±¸¿¡¼­´Â Áö³­ 6³â°£ °æºÏ´ëÇб³ º´¿ø ¼Ò¾ÆÄ¡°ú¿¡ ³»¿øÇÑ »ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡¸¦ Áö´Ñ 1171¸íÀÇ ¾Æµ¿À» ´ë»óÀ¸·Î ÀÓ»óÀû, ¹æ»ç¼±ÇÐÀû °Ë»ç¸¦ ÅëÇØ »ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡ÀÇ ¾ç»ó°ú º´¹ßÁõÀ» Á¶»çÇÏ°í ¹ß°Å ÈÄ º´¹ßÁõÀÇ Ä¡À¯À²¿¡ °üÇØ Á¶»ç Æò°¡ÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò°Ô µÇ¾ú´Ù. 1. »ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡¸¦ ¹ß°ßÇÏ°Ô µÈ µ¿±â·Î´Â ´Ù¸¥ ¿øÀÎÀ¸·Î »ó¾Ç ÁßÀýÄ¡ºÎ¸¦ ¿ì¿¬È÷ ¹æ»ç¼±»çÁø ÃÔ¿µÇÑ °æ¿ì 23.4%, »ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡ÀÇ ¸ÍÃâ 16.1%, ÃæÄ¡ Ä¡·á¸¦ À§ÇØ »ó¾Ç ÁßÀýÄ¡ºÎ¸¦ ¹æ»ç¼±»çÁø ÃÔ¿µÇÑ °æ¿ì 15.1%·Î ³ªÅ¸³µ´Ù. 2. »ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡·Î ÀÎÇÑ º´¹ßÁõÀÌ ³ªÅ¸³ªÁö ¾ÊÀº °æ¿ì´Â 36.8%, ÀÎÁ¢ ¿µ±¸ÀüÄ¡ÀÇ ¸ÍÃâ Áö¿¬À» ¾ß±âÇÑ °æ¿ì°¡ 34.4%, Á¤Áß ÀÌ°³°¡ 16.1%¿´´Ù. 3. »ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡ÀÇ ¿Ü°úÀû ¹ß°Å ½Ã ÀÎÁ¢ ¿µ±¸ÁßÀýÄ¡ÀÇ Ä¡·ÉÀº Ä¡±Ù±æÀÌÀÇ 1/2À̻󿡼­ 2/3ÀÌÇÏ°¡ 54.7%¿´´Ù. 4. »ó¾Ç Á¤ÁߺΠ°úÀ×Ä¡ÀÇ ¹ß°Å ÈÄ Á¤Áß ÀÌ°³¿Í ÀÎÁ¢ »ó¾Ç ¿µ±¸ÀüÄ¡ÀÇ ¸ÍÃâ Áö¿¬ Ä¡À¯À²Àº ¿Ü°úÀû ¹ß°Å ½Ã ÀÎÁ¢Ä¡ÀÇ Ä¡·ÉÀÌ Ä¡±Ù ±æÀÇ 1/2ÀÌÇÏÀÎ °æ¿ì ¸ÍÃâ Áö¿¬¿¡¼­ 65.27%·Î À¯ÀǼºÀÖ°Ô ³ô¾ÒÀ¸¸ç(P<0.05), Á¤Áß ÀÌ°³¿¡¼­´Â ÀÎÁ¢ÃøÀýÄ¡¿Í ÁßÀýÄ¡ °£ÀÇ ÃÑ»ýÀÌ ¾ø´Â °æ¿ì¿¡¼­ ±× Ä¡À¯À²ÀÌ 68.23%·Î À¯ÀǼºÀÖ°Ô ³ô¾Ò´Ù(P<0.05).

Authors evaluated 1171 patients at the department of Pediatric Dentistry in Kyoungpook National University Hospital through clinical records and radiographs. And the following features were studied ; age, sex distribution, number of mesiodens per patients, cause of discovery of mesiodens, location, status of eruption, shape and orientation of crown, complication, dental age of adjacent upper incisor tooth at the time of surgical extraction of mesiodens and the relationship between the resolution rate of complication after extraction of mesiodens and the dental age of adjacent upper incisor tooth, length of diastema, the eruption status of lateral incisor and the crowding status of premaxilla. The followings are the results : 1. The cause of discovery of mesiodens were as follows ; delayed eruption of the permanent incisors in 13.8%, midline diastema in 11.6%, radiographs taken for other reasons in 23.4% and for caries treatment in 15.1%. 2. Complication due to the presence of mesiodens did not occur in 36.8%, delayed eruption of adjacent teeth was observed in 16.1%, midline diastema in 34.4%, rotation in 8.8%, displacement in 2.4%, and crowding in 1.0% of all evaluated patients. 3. As for the dental age of adjacent upper incisor tooth at the time of surgical extraction of mesiodens, below 1/3 of total root length were observed in 3.5%, of total root length in 19.9%, of total root length in 54.7% and over 2/3 in 21.9% of all evaluated patients. 4. Resolution rate of delayed eruption after the extraction of mesiodens was significant higher in the group with the root length below 1/2. Resolution rate of midline diastema was significant higher in the group with diastema width below 3mm and with non-crowding of adjacent upper incisor teeth.

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Mesiodens;Delayed eruption;Midline diastema;Resolution rate

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