Table 1 Frequencies of the root and root canal configurations of mandibular premolars
Root morphology | Root position | Number of canals | Mandibular first premolar | Mandibular second premolar | |
|---|---|---|---|---|---|
1 root (n = 1947) | Conical | 1 canal | 765 (78.78) | 981 (98.4) | |
2 canals | 100 (10.3) | 16 (1.6) | |||
3 canals | 0 (0) | 0 (0) | |||
Fused | B, L | 2 canals | 50 (5.15) | 0 (0) | |
C-shaped | 36 (3.7) | 0 (0) | |||
2 roots (n = 21) | 2S | B, L | 2 canals | 14 (1.44) | 0 (0) |
1F 1S | MB, DB & L | 3 canals | 6 (0.62) | 0 (0) | |
Total | 971 (100) | 997 (100) |