Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지

DENS INVAGINATUS IN MANDIBULAR CENTRAL INCISORS

하악 중절치에 발생한 치내치

  • Lee, Jung-Jin (Department of Pediatric Dentistry, College of Dentistry and Oral Science Research Center Yonsei University) ;
  • Choi, Byung-Jai (Department of Pediatric Dentistry, College of Dentistry and Oral Science Research Center Yonsei University) ;
  • Lee, Jae-Ho (Department of Pediatric Dentistry, College of Dentistry and Oral Science Research Center Yonsei University) ;
  • Choi, Hyung-Jun (Department of Pediatric Dentistry, College of Dentistry and Oral Science Research Center Yonsei University) ;
  • Son, Heung-Kyu (Department of Pediatric Dentistry, College of Dentistry and Oral Science Research Center Yonsei University) ;
  • Kim, Seong-Oh (Department of Pediatric Dentistry, College of Dentistry and Oral Science Research Center Yonsei University)
  • 이정진 (연세대학교 치과대학 소아치과학교실.구강과학연구소) ;
  • 최병재 (연세대학교 치과대학 소아치과학교실.구강과학연구소) ;
  • 이제호 (연세대학교 치과대학 소아치과학교실.구강과학연구소) ;
  • 최형준 (연세대학교 치과대학 소아치과학교실.구강과학연구소) ;
  • 손흥규 (연세대학교 치과대학 소아치과학교실.구강과학연구소) ;
  • 김성오 (연세대학교 치과대학 소아치과학교실.구강과학연구소)
  • Published : 2008.05.30
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Abstract

Dens invaginatus is a rare malformation resulting from invagination of the enamel before calcification has occurred. It is mostly found in permanent maxillary lateral incisors and mandibular teeth are rarely affected by this anomaly. The malformation is estimated to affect between 0.04 % and 10 % of people and has been associated with other abnormalities such as taurodontism, microdontia, gemination and dentinogenesis imperfecta. Dens invaginatus is classified in three types with respect to the depth of invaginatus and has a broad spectrum of morphologic variations. Invagination frequently allows the entry of irritants and microorganism, which usually lead to caries, pulp infection and pulp necrosis. Root canal treatment on such invaginatus tooth may present severe problems because of its complex anatomy of the tooth. Therefore, the early diagnosis of such malformation is crucial and preventive approach is strongly recommended.

치내치(dens invaginatus)는 형태분화기에 비정상적인 치아발생이 원인으로 경조직이 석회화되기 전에 법랑질 상피가 함입되어 생기는 드문 치아 기형이다. 치내치의 발생 빈도는 0.04-10 %이고 대부분이 상악에서 발생하며 특히 상악측절치에서의 빈도가 높고 하악에서는 드물게 발생한다고 보고되었다. 치내치는 우상치나 왜소치, 쌍생치, 과잉치, 상아질 형성부전증과 같은 형태 이상과 연관되어서 나타나는 경우도 있다. 치내치는 함입된 정도에 따라 3가지로 분류할 수 있고 다양한 해부학적 변이를 보이며, 이러한 기형은 미생물의 침입을 용이하게 하므로 치아우식증과 치수감염 및 괴사의 위험성을 높인다. 치수조직에 문제가 생긴 경우 근관의 복잡한 해부학적 형태 때문에 근관치료가 매우 어려우므로 조기에 진단하여 치료하는 것이 중요하다. 본 증례들은 하악 중절치에 드물게 발생하는 치내치를 가진 환아에 대한 것으로 하악 중절치에서의 치내치 유병율과 치료에 대한 고찰을 하였기에 이를 보고하는 바이다.

Keywords

References

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