Figure 1From: The effect of a manual instrumentation technique on five types of premolar root canal geometry assessed by microcomputed tomography and three-dimensional reconstruction 3-D image shows the enamel, dentin, and root canal with surface rendering. Root canal system classification: (a, f) type I of Tooth A, (b, g) type II of Tooth B, (c, h) type III of Tooth C, (d, i) type IV of Tooth D, (e, j) type V of Tooth E. Except for mandibular premolar E, teeth were maxillary premolars. The images in the top and bottom row are viewed from buccolingual and mesiodistal directions, respectively.Back to article page