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A CASE OF SUPERNUMERARY TEETH IN THE MANDIBULAR INCISOR REGION A CASE REPORT

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ÀåÈñ¼÷ ( Jang Hee-Suk ) - Àü³²´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

°úÀ×Ä¡´Â Á¤»óÄ¡ÆÇ(dental lamina)ÀÇ °úµµÇÑ Áõ½ÄÀÌ °á°ú·Î ¹ß»ýµÇ¾î, °¡Á·Àû ¼ºÇâÀ» º¸À̸ç, ¼â°ñµÎ°³ÀÌÇü¼º(Cleidocranial dysplasia), Gardner ÁõÈıº µîÀÇ ¿©·¯ Áúȯ°ú °ü·ÃµÇ¾î ³ªÅ¸³ª±âµµ ÇÑ´Ù. ±× ºóµµ´Â À¯Ä¡¿­¿¡¼­ 0.3~0.8%, ¿µ±¸Ä¡¿­¿¡¼­ 1.0~3.5% ÀÌ°í, ³²¼º¿¡¼­ È£¹ßµÇ¸ç(2:1), »ó¾Ç¿¡¼­ ´õ ¸¹ÀÌ ¹ß»ýÇÑ´Ù(9:1).

»ó¾Ç¿¡¼­´Â mesiodens¶ó°í ºÒ¸®´Â ÁßÀýÄ¡ »çÀÌÀÇ À§Ä¡°¡ °¡Àå ÈçÇÑ ºÎÀ§ÀÌ°í, ±× ´ÙÀ½Àº fourth molar¿Í ÃøÀýÄ¡ ºÎÀ§ÀÌ´Ù. ÇϾǿ¡¼­´Â ¼Ò±¸Ä¡ ºÎÀ§°¡ °¡Àå ÈçÇÑ ºÎÀ§ÀÌ°í ÀüÄ¡ºÎÀ§¿¡¼­´Â ¾à 2%·Î ¸Å¿ì µå¹°°Ô ¹ß»ýÇÑ´Ù.

°úÀ×Ä¡ÀÇ ¸¸±â ÀÜÁ¸Àº Ä¡°£ ÀÌ°³, ÀÎÁ¢ÇÑ Ä¡¾ÆÀÇ ¸ÍÃâ Àå¾Ö, Ä¡±Ù Èí¼ö µîÀ» ¾ß±âÇÏ°í °úÀ×Ä¡¿Í °ü·ÃµÇ¾î ÇÔÄ¡¼º ³¶Á¾ÀÌ ¹ß»ýµÉ ¼ö ÀÖÀ¸¹Ç·Î Á¶±âÁø´Ü°ú ÀûÀýÇÑ Ä¡·á°¡ Áß¿äÇÏ´Ù.

º» µÎ Áõ·Ê´Â ºñ±³Àû µå¹°°Ô ³ªÅ¸³ª´Â ÇϾǿ¡ ¹ß»ýÇÑ °úÀ×Ä¡·Î, ÇÏ¾Ç ÀüÄ¡ºÎ¿Í ¼Ò±¸Ä¡ºÎ¿¡ ¹ß»ýÇÑ °úÀ×Ä¡¸¦ ¹ß°ÅÇÏ°í ±³Á¤Ä¡·á¸¦ ½ÃÇàÇÏ¿© ¾çÈ£ÇÑ °á°ú¸¦ ¾ò¾ú±â¿¡ º¸°íÇÏ´Â ¹ÙÀÌ´Ù.

Supernumerary tooth was resulted from excessive proliferation of dental lamina and associated with familial tendency and a congenital syndrome such as Cleidocranial dysostosis or Gardner¡¯s syndrome.

Incidence reports identify a range of 0.3~0.8% in primary dentition. 1.0~3.5% in permanent dentistion with males being affected twice as frequently as females. maxilla nine times as frequently as mandible. The most common supernumeraty tooth is the mesiodens, which located between the maxillary central incisors, and the next common site is the fourth molar and lateral incisors.

Supernumerary teeth are uncommon in the mendible, but premolars are the most common supernumerary teeth and occurrence is very rare in the incisor region of the mandible of possibility of diastema and cruption failure displacement. rotation of the associated permanent teeth, root resorption and dentigerous cyst with presence of the supernumerary teeth.

In this two case, one supernumerary tooth located in the mandibular incisor region, the other supernumerary tooth located in premolar region. We could get normal alignment of mandibular dentition by extraction and orthodontic treatment.

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°úÀ×Ä¡;ÇÏ¾Ç ÀüÄ¡ ÇϾǼұ¸Ä¡
Supernumerary teeth;Mandibular incisor;Mandibular premolar

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