Figure 4
From: The C-shaped root canal systems in mandibular second molars in an Emirati population
(A) axial cross section of mandibular molar showing the changes in the C-Shaped configuration along the root length; at the coronal third the canal started as C1, then changed into C2 at the middle third and finally ended as C4 at the apical third. (B) axial cross section of a mandibular second molar showing a lingual location of the groove, while (C) is showing the buccal location of the groove.
