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Number and frequency of the number of root canals in each root of three-rooted mandibular first molars
| 1 canal | 2 canals | Total | |
|---|---|---|---|
| Mesial root, n(%) | 3 (7.3) | 38 (92.7) | 41 (100) |
| Distobuccal root, n(%) | 40 (97.6) | 1 (2.4) | 41 (100) |
| Distolingual root, n(%) | 41 (100.0) | 0 (0.0) | 41 (100) |
There was no third canal in the mesial root of three-rooted mandibular first molars
