| Post treatment interval | Radiographic Findings | |||||||
| Widened PDL | Periapical or
inter-radicular radiolucency |
Internal resorption | Abnormal root resorption |
|||||
| GI | GII | GI | GII | GI | GII | GI | GII | |
| 1 month | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 months | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6 months | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 2 |