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| Outcome | Time point (months) | No. of studies | Risk ratio (95% CI) |
| Clinical failure | 6, 12 and 18 | 1 | Not estimable* |
| Radiological failure | 6 | 1 | Not estimable* |
| 12 | 1 | 0.33 (0.04 to 2.94) | |
| 18 | 1 | 0.33 (0.04 to 2.94) | |
| Pathological root resorption | 6 | 1 | Not estimable* |
| 12 | 1 | 0.33 (0.04 to 2.94) | |
| 18 | 1 | 0.33 (0.04 to 2.94) |
*due to lack of events
Abbreviations ‐ CEM: calcium‐enriched mixture; CI: confidence interval; MTA: mineral trioxide aggregate
