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저위교합된 상악 유구치에 의해 변위된 소구치 치배의 맹출유도

ERUPTION GUIDANCE FOR TOOTH GERM OF PREMOLAR DISPLACED BY INFRAOCCLUDED UPPER DECIDUOUS MOLAR

  • 정정화 (경북대학교 치의학전문대학원 소아치과학교실) ;
  • 김영진 (경북대학교 치의학전문대학원 소아치과학교실) ;
  • 김현정 (경북대학교 치의학전문대학원 소아치과학교실) ;
  • 남순현 (경북대학교 치의학전문대학원 소아치과학교실)
  • Jung, Jung-Hwa (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University) ;
  • Kim, Young-Jin (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University) ;
  • Kim, Hyun-Jung (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University) ;
  • Nam, Soon-Hyeun (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University)
  • 투고 : 2012.07.23
  • 심사 : 2012.08.02
  • 발행 : 2012.11.30

초록

저위교합이란 치아가 출은 이후 유착 등의 원인으로 맹출이 정지되어 주위조직이 정상적으로 성장함에 따라 정상교합보다 낮아진 상태를 말한다. 저위교합을 방치하는 경우 이환치의 만기잔존과 대합치의 정출 및 인접치의 경사에 따른 공간상실, 교합압과 식편압입으로 인한 인접치의 치주 조직 파괴와 치아우식 감수성의 증가, 계승치의 맹출경로 변위 또는 매복과 같은 문제점이 발생할 수 있으므로 정기검진을 통한 진단과 이에 따른 적절한 치료가 필요하다. 저위교합을 보이는 유구치의 치료방법으로는 후속 영구치의 유무, 저위교합의 발생 시기 및 진단 시기, 저위교합의 정도 등에 따라서 주기적인 관찰, 보존적 접근 방법, 수복치료, 교정적 방법을 통한 공간확장술과 발치 등이 있다. 본 증례에서는 상악 제2유구치의 저위교합 및 제2소구치 치배의 변위를 보이는 3명의 환아를 대상으로 가철성 교정장치를 이용한 공간확장술 및 유구치의 발치를 시행함으로써 변위되었던 제2소구치 치배의 정상 맹출을 유도하였다.

Infraocclusion is defined as tooth whose relative occlusal movement was blocked during the period of active eruption due to ankylosis and so on. Then infraoccluded tooth remains under the occlusal plane composed by adjacent structures showing normal eruption patterns. Untreated infraocclusion may cause: prolonged retention of infraoccluded teeth; extrusion of apposed teeth; destruction of periodontal tissues by occlusal force and food packing; increased sensitivity for dental caries; and disturbances on eruption pathway of succedaneous teeth. Therefore, periodic check-ups and proper treatments are required. There are many treatment options on infraoccluded deciduous molars such as periodic observation, conservative method, restoration and space regaining with extraction of the teeth. The choice of treatment may depend on the presence of succedaneous teeth, time of diagnosis and degree of infraocclusion. In this case report, three patients showing displacement of the second premolars due to infraocclusion of upper second primary molars, were treated by means of space regaining with removable orthodontic appliances and extraction of ankylosed primary molars. All malpositioned permanent premolars in the 3 cases showed ordinary eruption pathways after treatment.

키워드

참고문헌

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