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Tooth Agenesis and Delay in Patients with Agenesis of Mandibular Second Premolars

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Abstract

¼±ÃµÀû Ä¡¾ÆÀÇ °á¼ÕÀº ºñ±³Àû ÈçÇÑ Ä¡¾Æ ¹ßÀ°Àå¾ÖÀ̸ç ÇÏ¾Ç Á¦2¼Ò±¸Ä¡ÀÇ °á¼ÕÀº Ä¡¾Æ °á¼Õ Áß °¡Àå ¸¹ÀÌ ³ªÅ¸³ª´Â °ÍÀ¸·Î ¾Ë·ÁÁ®ÀÖ´Ù. ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ÇÏ¾Ç Á¦2¼Ò±¸Ä¡ °á¼Õ°ú ¿¬°üµÇ¾î ³ªÅ¸³ª´Â ´Ù¸¥ Ä¡¾ÆÀÇ °á¼Õ ¹× Ä¡¾ÆÀÇ ¹ßÀ° Áö¿¬¿¡ ´ëÇØ Á¶»çÇÏ´Â °ÍÀÌ´Ù. ÀÌ ¿¬±¸´Â 2014³âºÎÅÍ 2016³â±îÁö ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐÀ» ³»¿øÇÏ¿© Æijë¶ó¸¶ ¹æ»ç¼±À» ÂïÀº ¸¸ 9¼¼-15¼¼ÀÇ ¼Ò¾Æû¼Ò³â Áß ÇϾÇÁ¦2¼Ò±¸Ä¡ °á¼ÕÀÌ Àִ ȯÀÚ¸¦ ´ë»óÀ¸·Î ½ÃÇàµÇ¾ú´Ù. ÇÏ¾Ç Á¦2¼Ò±¸Ä¡ÀÇ °á¼ÕÀ» °¡Áø 125¸íÀÇ È¯ÀÚµé Áß ´Ù¸¥ Ä¡¾ÆÀÇ °á¼ÕÀº 58¸í(46.4%)¿¡¼­ ³ªÅ¸³µÀ¸¸ç ¹ßÀ°ÀÌ Áö¿¬µÈ Ä¡¾Æ´Â 38¸í(30.4%)¿¡¼­ ³ªÅ¸³µ´Ù. À̹ø ¿¬±¸¿¡¼­ ÇÏ¾Ç Á¦2¼Ò±¸Ä¡ÀÇ °á¼ÕÀ» °¡Áø ȯÀÚ´Â ±×·¸Áö ¾ÊÀº ¾î¸°ÀÌ¿Í ºñ±³ÇÏ¿´À» ¶§ Ä¡¾Æ °á¼Õ ¹× Ä¡¾Æ ¹ßÀ°Áö¿¬ÀÇ À¯º´·üÀÌ ³ô°Ô ³ªÅ¸³µ´Ù.

Tooth agenesis is a common human dental anomaly and the agenesis of mandibular second premolars has been proven to be the most frequently observed. The aim of this study is to investigate tooth agenesis and delayed tooth development in patients with agenesis of mandibular second premolars. This study reviewed 9 to 15 year-old patients with agenesis of mandibular second premolars who visited the department of pediatric dentistry of Yonsei University Dental Hospital and took panoramic radiographs from January 2014 to December 2016. On panoramic radiographs, agenesis of teeth was observed and developmental delay of teeth was evaluated by the Nolla method. Among 125 patients with agenesis of mandibular second premolars, 58 patients (46.4%) showed agenesis of other teeth and 38 patients (30.4%) showed delayed tooth development. In this study, patients with agenesis of mandibular second premolars were more likely to have tooth agenesis or delayed eruption of other teeth.

Å°¿öµå

Tooth agenesis; Mandibular second premolar; Delayed tooth development

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