Table 2.
Reasons for treatment failure.
| Time (Months) | 12–24 | 24–36 | 36–48 | 48–60 |
|---|---|---|---|---|
| IRM | Internal resorption—3 | Internal resorption—2 | Internal resorption—3 | |
| Pathological radiolucent defect—4 | Pathological radiolucent defect—2 | |||
| One patient had both sings * | ||||
| Coltosol® | Internal resorption—3 | Internal resorption—2 | ||
| Pathological radiolucent defect—4 | Pathological radiolucent defect—1 | Pathological radiolucent defect—1 | ||
| Three patients had both signs * | One patient had both signs * |
* The most common radiographic sign was pathological furcation/periapical radiolucency.