Journal of the Korean Academy of Pediatric Dentistry 2008;35(2):313-318.
Published online May 31, 2008.
DENS INVAGINATUS IN MANDIBULAR CENTRAL INCISORS
Jung-Jin Lee, Byung-Jai Choi, Jae-Ho Lee, Hyung-Jun Choi, Heung-Kyu Son, Seong-Oh Kim
Department of Pediatric Dentistry, College of Dentistry and Oral Science Research Center Yonsei University 
하악 중절치에 발생한 치내치
이정진, 최병재, 이제호, 최형준, 손흥규, 김성오
연세대학교 치과대학 소아치과학교실∙구강과학연구소
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.
Key Words: Dens invaginatus, Mandibular central incisor


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