Fig. 3From: The morphology of permanent maxillary first molars evaluated by cone-beam computed tomography among a Yemeni populationSome of the root canal variations observed in the MB root A 1-2-3-2 canal configuration; B 1-3-1-2 canal configuration; C 1-2-3-2-1 canal configuration; D 1-2-1-2-1 canal configuration; E 2-1-2-1-2 canal configuration (New root canal type)Back to article page