183869.fig.002a
(a)
183869.fig.002b
(b)
183869.fig.002c
(c)
183869.fig.002d
(d)
183869.fig.002e
(e)
Figure 2: Axial CT scans of unilateral permanent three-rooted mandibular first molar. (a) Coronal section, (b) pulp-chamber section, (c) coronal-third root section, (d) mid-root section, and (e) apical-third root section. Arrows indicate extra DL roots.