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Analysis of the Characteristics of Maxillary Supernumerary Lateral Incisor

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³ªÁ¤¼± ( Nah Jeung-Seon ) - Kyung Hee University Dental Hospital at Gangdong Department of Pediatric Dentistry
ÀÌ°íÀº ( Lee Ko-Eun ) - Kyung Hee University Dental Hospital Department of Pediatric Dentistry
±è¹Ì¼± ( Kim Mi-Sun ) - Kyung Hee University School of Dentistry Department of Pediatric Dentistry
³²¿ÁÇü ( Nam Ok-Hyung ) - Kyung Hee University Dental Hospital Department of Pediatric Dentistry
ÃÖ¼ºÃ¶ ( Choi Sung-Chul ) - Kyung Hee University Dental Hospital Department of Pediatric Dentistry
ÀÌÈ¿¼³ ( Lee Hyo-Seol ) - Kyung Hee University Dental Hospital Department of Pediatric Dentistry

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº »ó¾Ç ÃøÀýÄ¡ °úÀ×Ä¡ÀÇ ÇغÎÇÐÀûÀΠƯ¡°ú Á¤»ó ÃøÀýÄ¡¿ÍÀÇ °ü°è¿¡ ´ëÇØ Á¤·®Àû ºÐ¼®À» ½ÃÇàÇÏ´Â °Í¿¡ ÀÖ´Ù. 43¸íÀÇ 44°³ÀÇ »ó¾Ç ÃøÀýÄ¡ °úÀ×Ä¡¸¦ ´ë»óÀ¸·Î Àü»êÈ­ ´ÜÃþ ¹æ»ç¼±»çÁøÀ» ÀÌ¿ëÇÏ¿© ÃøÀýÄ¡ °úÀ×Ä¡ÀÇ À§Ä¡, ÇüÅÂ, ¹æÇâ ¹× ÃøÀýÄ¡ °úÀ×Ä¡¿ÍÀÎÁ¢ÇÑ ¿µ±¸ÀüÄ¡¿ÍÀÇ °ü°è¸¦ °üÂûÇÏ¿´´Ù. ¶ÇÇÑ ÃøÀýÄ¡ °úÀ×Ä¡¿Í ÀÎÁ¢ÇÑ ÃøÀýÄ¡ ¹× ¹Ý´ëÃø ÃøÀýÄ¡ÀÇ Å©±â¸¦ ºñ±³Çϱâ À§ÇØ °¢°¢ÀÇ Ä¡°ü ±Ù¿ø½É Æø°æÀ» °èÃøÇÏ¿´°í, Ä¡¾Æ¼º¼÷µµ¸¦ ºñ±³Çϱâ À§ÇØ Nolla stage¸¦ ÀÌ¿ëÇÏ¿© °¢ Ä¡¾ÆÀÇ Ä¡±Ù ¹ßÀ° Á¤µµ¸¦ Æò°¡ÇÏ¿´´Ù. ÃøÀýÄ¡°úÀ×Ä¡´Â 90.9%ÀÇ ºñÀ²·Î Á¤À§ ¹æÇâÀ¸·Î Á¸ÀçÇÏ¿´°í, 84.1%°¡ º¸ÃæÇüÀÇ ÇüÅ·ΠÁ¸ÀçÇÏ¿´´Ù. ÃøÀýÄ¡ °úÀ×Ä¡´Â ÀÎÁ¢ÇÑ ÃøÀýÄ¡³ª ¹Ý´ëÃøÀÇ ÃøÀýÄ¡¿¡ ºñÇØ Ä¡°üÀÇ Å©±â°¡ Åë°èÀûÀ¸·Î À¯ÀÇÇÏ°Ô ÀÛ¾Ò°í(p < .0001), Ä¡±Ù ¹ßÀ° ´Ü°è¿¡¼­´Â Åë°èÀû À¯ÀǹÌÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. °á·ÐÀûÀ¸·Î, »ó¾Ç ÃøÀýÄ¡ °úÀ×Ä¡´Â Á¤»óÃøÀýÄ¡¿Í ¸Å¿ì À¯»çÇÏÁö¸¸ Ä¡°ü Å©±â¿¡ À־ Â÷À̸¦ º¸ÀδÙ. »ó¾Ç ÃøÀýÄ¡ °úÀ×Ä¡°¡ Á¸ÀçÇÏ´Â °æ¿ì, ±³Á¤Àû ȤÀº ½É¹ÌÀûÀÎ ¹®Á¦¸¦ ÁÙÀ̱â À§ÇØ ÃøÀýÄ¡¿Í °úÀ×Ä¡¸¦ Á¤È®ÇÏ°Ô ±¸ºÐÇÏ¿© Ä¡·áÇÏ´Â °ÍÀÌ Áß¿äÇÏ´Ù.

This study aimed to investigate a quantitative analysis of the anatomical characteristics of the maxillary supernumerary lateral incisor and its relationship with lateral incisors. Forty-four supernumerary lateral incisors from 43 patients were evaluated for analyzing the position, shape, direction, and relationship between the supernumerary lateral incisor and the normal lateral incisors, using cone-beam computed tomography (CBCT). To compare the size of crown, the mesiodistal width was measured and the Nolla stage was used for evaluating the degree of root development to compare tooth maturity. The supernumerary lateral incisors were in the normal direction at a rate of 90.9%, and in a supplemental shape at a rate of 84.1%. The supernumerary lateral incisor was smaller in size compared to the adjacent lateral incisor and opposite lateral incisor (p < .0001). There was no statistically significant difference in the development stage of root.
Based on these results, the supernumerary lateral incisor is similar with the lateral incisor, but has a difference in the size of crown. It is necessary to distinguish the supernumerary lateral incisor from the lateral incisor precisely to reduce clinical complications.

Å°¿öµå

Supernumerary lateral incisor; CBCT; Supplemental tooth; Crown width; Nolla stage; Retrospective study

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