1 root | 2 roots | 3 roots | ||||
Direction of curvature | - | B | P | MB | DB | P |
Straight | 18.6 | 19.9 | 21.1 | 11.8 | 16.5 | 41 |
Toward Palatal | 1 | 26.8 | 2.3 | 0.5 | 3.2 | 56.9 |
Toward Buccal | 1.2 | 2.3 | 24.9 | - | 0.6 | - |
Toward Mesial | 0.5 | 0.7 | 1 | 41.8 | 48.8 | - |
Toward Distal | 73.9 | 38.3 | 41.9 | 27.4 | 29.3 | 2.1 |
“S”curve | 4.8 | 12 | 8.8 | 18.5 | 1.6 | - |
Total | 100 | 100 | 100 | 100 | 100 | 100 |