From: Cone‐beam computed tomography evaluation of C-shaped root and canal morphology of mandibular premolars
C-shaped mandibular premolars
Male (%)
Female (%)
C1
6 (4.54%)
1 (0.75%)
C2
5 (3.78%)
9 (6.81%)
C3
30 (22.72%)
40 (30.03%)
C4a
15 (11.36%)
13 (9.84%)
C4b
3 (2.27%)
Out of classification
Total (%)
63 (47.72%)
69 (52.27%)