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Eruption Guidance of Distally Displaced Mandibular Second Premolar by the Hemisection of Primary Second Molar: Two Case Reports

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½Å¿ë¿í, ¹ÚÈ£¿ø, ÀÌÁÖÇö,
¼Ò¼Ó »ó¼¼Á¤º¸
½Å¿ë¿í ( Shin Yong-Wook ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
¹ÚÈ£¿ø ( Park Ho-Won ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
ÀÌÁÖÇö ( Lee Ju-Hyun ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry

Abstract

ÇÏ¾Ç Á¦2¼Ò±¸Ä¡ Ä¡¹èÀÇ ¿ø½É º¯À§´Â ÇØ´ç Ä¡¾ÆÀÇ ¸Åº¹ »Ó¸¸ ¾Æ´Ï¶ó ÇÏ¾Ç Á¦1´ë±¸Ä¡ÀÇ ¸ÍÃâ °æ·Î¸¦ ¹æÇØÇÏ¿© Ãß°¡ÀûÀÎ ¸ÍÃâ Áö¿¬À» ¾ß±âÇÒ ¼ö ÀÖ´Ù. ÀÌ Áõ·Ê º¸°í´Â ¿ø½ÉÀ¸·Î º¯À§µÈ ÇÏ¾Ç Á¦2¼Ò±¸Ä¡·Î ÀÎÇØ ÇÏ¾Ç Á¦1´ë±¸Ä¡ÀÇ ¸ÍÃâ Áö¿¬ÀÌ ³ªÅ¸³­ µÎ Áõ·Ê¸¦ ¼Ò°³ÇÏ°í ÀÖ´Ù. ¿ø½ÉÀ¸·Î º¯À§µÈ ÇÏ¾Ç Á¦2¼Ò±¸Ä¡ Ä¡¹èÀÇ ±Ù½É À̵¿À» À§ÇØ ¼±Çà À¯Ä¡ÀÇ ÀǵµÀû ¹ß°Å¼úÀ» ½ÃÇàÇÒ ¼ö ÀÖ´Ù. ÇÏÁö¸¸ Á¦2À¯±¸Ä¡ÀÇ Á¶±â »ó½Ç ½Ã ¹Ù¶÷Á÷ÇÏÁö ¾ÊÀº ÇÏ¾Ç Á¦1¼Ò±¸Ä¡ÀÇ ¿ø½É À̼ҸÍÃâÀÌ ³ªÅ¸³¯ ¼ö ÀÖ´Ù. ÇÏ¾Ç Á¦1¼Ò±¸Ä¡ÀÇ ¹Ù¶÷Á÷ÇÏÁö ¾ÊÀº ¿ø½É À̼ҸÍÃâÀ» ¹æÁöÇϸ鼭 ¿ø½ÉÀ¸·Î º¯À§µÈ ÇÏ¾Ç Á¦2¼Ò±¸Ä¡ Ä¡¹è¸¦ ±Ù½ÉÀ¸·Î À̵¿½ÃÅ°±â À§ÇØ ÇÏ¾Ç Á¦2À¯±¸Ä¡ÀÇ ÆíÃøÄ¡¾ÆÀýÁ¦¼ú ¹× ¼øÂ÷Àû ¹ß°Å¸¦ ¼öÇàÇÏ¿´´Ù.

Distal displacement of the tooth germ of the mandibular second premolar (MnP2) leads to its impaction and obturation of the eruption path of the mandibular first molar delaying its eruption. The present case report describes the treatment of 2 cases of eruption guidance for distally displaced developing MnP2 that caused delayed eruption of the mandibular first molar. Intentional extraction of primary predecessor results in the mesial shift of the displaced MnP2. However, unfavorable distal ectopic eruption of the mandibular first premolar after the premature loss of primary second molar has been previously reported. Hemisection and sequential extraction of the mandibular primary second molar were performed to mesially shift the distally displaced MnP2, while preventing unfavorable distal ectopic eruption of the mandibular first premolar.

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Eruption guidance; Hemisection; Sequential extraction; Mandibular second premolar

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