Table 1 C-shaped mandibular first premolars according to Fan et al. classification, and canals bifurcation
C-shape classification | Canals bifurcation | ||||
|---|---|---|---|---|---|
Total (%) | Cervical third | Middle third | Apical Third | Without bifurcation | |
Total | 110 (100%) | 27 (25%) | 62 (56.36%) | 9 (8.18%) | 11 (10%) |
C1 | 4 (3.63) | 0 | 3 (2.72%) | 1 (0.90%) | 0 |
C2 | 10 (9.09) | 2 (1.81%) | 7 (6.36%) | 2 (1.81%) | 0 |
C3 | 65 (59.09) | 21 (19.09%) | 43 (39.09%) | 1 (0.90%) | 0 |
C4a | 24 (21.81) | 3 (2.72%) | 5 (4.54%) | 4 (3.63%) | 10 (9.09%) |
C4b | 2 (1.8) | 0 | 1 (0.90%) | 0 | 1 (0.90%) |
Could not be classified | 5 (4.54) | 1 (0.90%) | 3 (2.72%) | 1 (0.90%) | 0 |