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J Korean Acad Pediatr Dent. 2008;35(2): 313-318.
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
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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.
Keywords: Dens invaginatus | Mandibular central incisor
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