Micromorphological Analysis of Primary Second Molar with Molar-incisor Malformation : A Case Report
김명환, 박호원, 이주현, 서현우,
소속 상세정보
김명환 ( Kim Myung-Hwan ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
박호원 ( Park Ho-Won ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
이주현 ( Lee Ju-Hyun ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
서현우 ( Seo Hyun-Woo ) - Gangneung-Wonju National University College of Dentistry Department of Pediatric Dentistry
Abstract
Molar-incisor malformation (MIM) is characterized by malformation in the root with a normal crown. While MIM mostly occurs in the permanent first molar, it has also been reported in the maxillary central incisor and the primary second molar (PSM), but anatomical analysis of the primary teeth with MIM has not been studied to date. In this case report, a patient with MIM was reported, and an extracted PSM with MIM was analyzed with micro computed tomography (CT). A cervical constriction morphology of the cementoenamel junction (CEJ) can be observed in extracted PSM. In micro CT analysis, characteristics such a mineralized plate (cervical mineralized diaphragm) in the CEJ area, complex root canal morphologies, a calcified mass inside the pulp chamber, and constricted pulp chamber of crown portion were observed.
키워드
Molar-incisor malformation; Primary second molar; Micro computed tomography
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