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Distribution of the Number of Root Canals based on the Tooth Position.
| Tooth position | One canal (%) | Two canals (%) | Three canals (%) | Total |
|---|---|---|---|---|
| Mandibular first premolar | ||||
| Right | 72 (72.7) | 26 (26.2) | 1 (1) | 99 (45.83) |
| Left | 89 (76.7) | 26 (22.2) | 2 (1.7) | 117 (54.16) |
| Total | 161 (74.5) | 52 (24.1) | 3 (1.3) | 216 |
