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Factors and Treatments Influencing the Unilaterally Unerupted Maxillary Central Incisor

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ÃÖÈ¿Á¤ ( Choi Hyo-Jung ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
³²¼øÇö ( Nam Soon-Hyeun ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÇöÁ¤ ( Kim Hyun-Jung ) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

À̹ø ¿¬±¸¿¡¼­´Â »ó¾Ç ÁßÀýÄ¡ÀÇ ÆíÃø¼º ¸ÍÃâ Àå¾ÖÀÇ ¿øÀÎÀ» Á¶»çÇÏ°í ¸Åº¹µÈ Ä¡¾ÆµéÀÇ ¸Åº¹±íÀÌ, ¸Åº¹°¢µµ, Ä¡±Ù¹ßÀ° »óŸ¦ Ä¡°ú¿ëCone-beam CT·Î ºÐ¼®ÇÏ¿© Ä¡·á¹æÇâÀ» ¿¹ÃøÇϴµ¥ µµ¿òÀÌ µÇ°íÀÚ ÇÏ¿´´Ù. ÃÑ 134¸íÀÇ È¯ÀÚ Áß »ó¾Ç ÁßÀýÄ¡ÀÇ ÆíÃø¼º ¸ÍÃâ Àå¾Ö·Î Áø´ÜµÈ Æò±Õ¿¬·ÉÀº 7.9¼¼¿´À¸¸ç, ³²ÀÚ°¡ ¿©ÀÚº¸´Ù 2.1¹è ´õ ³ôÀº ºóµµ¸¦ ³ªÅ¸³Â´Ù. ¸ÍÃâ Àå¾ÖÀÇ ÁÖ¿øÀÎÀº ¹°¸®Àû Àå¾Ö¹°·Î °úÀ×Ä¡¿Í Ä¡¾ÆÁ¾ÀÌ ´ëºÎºÐÀ» Â÷ÁöÇÏ¿´´Ù. ÆíÃø¼º ¸ÍÃâ Àå¾Ö¸¦ º¸¿´´ø Ä¡¾Æ Áß ¹°¸®ÀûÀå¾Ö¹°À» Á¦°ÅÇÑ ÈÄ, 78Áõ·Ê´Â ÀÚ¹ßÀûÀ¸·Î ¸ÍÃâÇÏ¿´À¸¸ç 56Áõ·Ê´Â ºñÀÚ¹ßÀûÀ¸·Î ¸ÍÃâÇÏ¿´´Ù. ¶ÇÇÑ ÆíÃø¼º ¸Åº¹ »ó¾Ç ÁßÀýÄ¡ÀÇ ÀÚ¹ßÀûȤÀº ºñÀÚ¹ßÀû ¸ÍÃâÀº ¸Åº¹±íÀÌ, ¸Åº¹°¢µµ, Ä¡±Ù¹ßÀ° Á¤µµ¿Í ¿¬°ü¼ºÀÌ ÀÖ¾ú´Ù. Á¤»óÀûÀ¸·Î ¸ÍÃâÇÑ Ä¡¾ÆÀÇ ¸Åº¹ °¢µµ´Â 50¡Æ - 90¡Æ»çÀÌ¿´À¸¸ç, ¸Åº¹ »ó¾Ç ÁßÀýÄ¡ÀÇ ÀÚ¹ßÀû ¸ÍÃâ ºóµµµµ ÀÌ ¹üÀ§¿¡¼­ °¡Àå ³ô¾Ò´Ù. ¶ÇÇÑ ÀÚ¹ßÀû ¸ÍÃâ¿¡ °É¸° ½Ã°£Àº ¸Åº¹°¢µµ¿Í Ä¡±Ù ¹ßÀ°º¸´Ù¸Åº¹±íÀÌ¿Í ³ôÀº »ó°ü°ü°è¸¦ º¸¿´´Ù. ºñÀÚ¹ßÀû ¸ÍÃâÀ» º¸¿´´ø Ä¡¾Æµé Áß ´ëºÎºÐÀº ±³Á¤Àû °ßÀο¡ ÀÇÇØ ±¸°­³»·Î ¸ÍÃ⠵Ǿú°í, ±× ±â°£Àº ¾à 12°³¿ù Á¤µµ °É·ÈÀ¸¸ç, ±³Á¤Àû °ßÀαⰣÀº ¸Åº¹±íÀÌ, ¸Åº¹°¢µµ, Ä¡±Ù¹ßÀ° Á¤µµ¿Í Åë°èÀûÀÎ À¯ÀǼºÀ» ³ªÅ¸³»Áö ¾Ê¾Ò´Ù. À̹ø ¿¬±¸ÀÇ °á°úµéÀº ÆíÃø¼º »ó¾Ç ÁßÀýÄ¡ ¸ÍÃâ Àå¾ÖÀÇ ¿øÀΰú Ä¡·á¿¡ ´ëÇÑ Á¤º¸¸¦ Á¦°øÇÒ ¼ö ÀÖ¾úÀ¸¸ç, Ä¡·á °á°ú¸¦ Á¦°øÇÔÀ¸·Î½áÇâÈÄ Ä¡·á°èȹÀ» ¼¼¿ì´Âµ¥ µµ¿òÀÌ µÉ ¼ö ÀÖÀ¸¸®¶ó »ý°¢µÈ´Ù.

The purpose of this study was to investigate the cause of eruption disturbance in the maxillary central incisor and establish the effective treatment plan by analyzing the vertical distance, angulation of long axis and root development of the tooth with eruption disturbance using the cone-beam CT. The average age of 134 patients diagnosed with unilaterally impacted maxillary central incisor was 7.9 years old and the male was 2.1 times higher than the female. The most common cause of eruption disorder was physical obstruction, especially mesiodens and odontoma. Of the teeth with unilateral eruption disorder, 78 cases erupted spontaneously and 56 cases erupted non-spontaneously after removal of physical obstruction. The possibility of spontaneous or non-spontaneous eruption in the unilaterally impacted maxillary central incisor depended on several factors, such as vertical distance, angulation of long axis and root development of unerupted tooth. The spontaneous eruption of the impacted maxillary cental incisor was most frequent at the angulation of long axis of 50 to 90 degrees, which is similar to the angulation of long axis of the normally erupted maxillary central incisor. In addition, the spontaneous eruption period of impacted maxillary central incisor was more influenced by the vertical distance than the angulation of long axis and the root development. Most of the teeth that showed non-spontaneous eruption had orthodontic traction, and these teeth were usually erupted within about 12 months. The period treated with orthodontic traction was no statistical significance with the vertical distance, the angulation of long axis, and the root development. This study will provide information on the cause of unilaterally impacted maxillary cental incisor and help to establish the future treatment plan.

Å°¿öµå

Maxillary central incisor; Delayed eruption; Impacted tooth; Spontaneous eruption; Non-spontaneous eruption

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