Table 2: Experimental groups and scores of each root canal regions.
| Region | Score | |||||
| 1 | 2 | 3 | 4 | 5 | ||
| Group 1 (VSI) | Coronal | 8 | 4 | 2 | 1 | 0 |
| Medium | 9 | 5 | 1 | 0 | 0 | |
| Apical | 8 | 3 | 3 | 1 | 0 | |
| Group 2 (EndoVac) | Coronal | 8 | 3 | 2 | 2 | 0 |
| Medium | 8 | 5 | 2 | 2 | 0 | |
| Apical | 9 | 4 | 2 | 0 | 0 | |
| Group 3 (CNI) | Coronal | 2 | 4 | 9 | 0 | 0 |
| Medium | 0 | 3 | 8 | 4 | 0 | |
| Apical | 0 | 0 | 2 | 10 | 3 | |
| Group 4 (PUI) | Coronal | 10 | 3 | 2 | 0 | 0 |
| Medium | 11 | 2 | 2 | 0 | 0 | |
| Apical | 9 | 4 | 2 | 0 | 0 | |