Figure 1.
Mesial root canal configurations observed in this study. (a) type II, (b) type IV, (c) type V, (d) type VI, (e) type (2-1-2-1), and (f) isthmi in the cervical and apical third of the root.
Mesial root canal configurations observed in this study. (a) type II, (b) type IV, (c) type V, (d) type VI, (e) type (2-1-2-1), and (f) isthmi in the cervical and apical third of the root.