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1 Curzon ME, "Three-rooted mandibular permanent molars in English Caucasians" 52 : 181-, 1973
2 Walker RT, "Three-rooted lower first permanent molars in Hong Kong Chinese" 159 : 298-299, 1985
3 Huang RY, "Three-dimensional analysis of the root morphology of mandibular first molars with distolingual roots" 43 : 478-484, 2010
4 De Moor RJ, "The radix entomolaris in mandibular first molars: an endodontic challenge" 37 : 789-799, 2004
5 Song JS, "The prevalence and morphologic classification of distolingual roots in the mandibular molars in a Korean population" 36 : 653-657, 2010
6 Patel S, "The potential applications of cone beam computed tomography in the management of endodontic problems" 40 : 818-830, 2007
7 Chen YC, "The morphologic characteristics of the distolingual roots of mandibular first molars in a Taiwanese population" 35 : 643-645, 2009
8 Matthews LS, "Temperatures measured in human cortical bone when drilling" 54 : 297-308, 1972
9 Gulabivala K, "Root and canal morphology of Thai mandibular molars" 35 : 56-62, 2002
10 Tu MG, "Prevalence of three-rooted mandibular first molars among Taiwanese individuals" 33 : 1163-1166, 2007
11 최미리, "Prevalence and features of distolingual roots in mandibular molars analyzed by cone-beam computed tomography" 대한영상치의학회 45 (45): 221-226, 2015
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