Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
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) |
