Table 2.
Factors causing endodontic failures in cases completed root canal treatments and the number of cases using CBCT
| Factors | No. of Teeth | Percentage of Total | No. of cases using CBCT |
|---|---|---|---|
| Open apices | 18 | 23.7 | 3 |
| Missed canal | 12 | 15.8 | 5 |
| Insufficient enlargement of root canal | 10 | 13.2 | 1 |
| Perforation | 9 | 11.8 | 2 |
| Fin isthmus | 8 | 10.5 | 3 |
| Transportation | 7 | 9.2 | 2 |
| Residual caries | 7 | 9.2 | 4 |
| Root fracture | 5 | 6.6 | 2 |
| Inaccessible root apex | 4 | 5.2 | 1 |
| Separated instruments | 4 | 5.2 | 1 |
| Fenestration | 2 | 2.6 | 2 |
| Accessory canal | 2 | 2.6 | 1 |
| Endo-perio | 2 | 2.6 | 1 |
| Indefinite complaint | 1 | 1.3 | 1 |
| Periodontitis | 1 | 1.3 | 0 |
| Nonodontogenic toothache | 1 | 1.3 | 0 |
| Occlusal trauma | 1 | 1.3 | 0 |
| Total | 76 | 100 | 20 |
Several factors were identified in one tooth