Table 4 Distributions of C-shaped canal configurations in C-shaped mandibular first premolars according to root level
Cross-sections of C-shaped canals, N (%) | |||
|---|---|---|---|
Coronal | Middle | Apical | |
C1 | – | – | – |
C2 | – | 27 (75) | 15 (41.7) |
C3 | – | 7 (19.4) | 16 (44.4) |
C4a | 7 (19.4) | 2 (5.6) | 2 (5.6) |
C4b | 16 (44.4) | 3 (8.3) | |
C4c | 13 (36.1) | ||
Total | 36 (100) | 36 (100) | 36 (100) |