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NTIS 바로가기大韓齒科醫師協會誌 = The journal of the Korean dental association, v.55 no.1, 2017년, pp.63 - 70
박민수 (조선대학교 치과대학 치과보존학교실) , 황호길 (조선대학교 치과대학 치과보존학교실) , 조형훈 (조선대학교 치과대학 치과보존학교실)
Materials and methods: Sixty extracted premolars were assigned to three groups according to the root canal system (Weine's classification; type I, II and III) of 20 teeth each using radiographic examination. The root tip was cut horizontally 1 mm from the anatomical apex and the apical cross-section...
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