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| Outcome | Time point (months) | No. of studies | Risk ratio (95% CI) |
| Pain | 6 | 1 | 0.25 (0.06, 1.08) |
| Soft tissue pathology | 6 | 1 | 0.33 (0.07, 1.52) |
| Pathologic mobility | 6 | 1 | 0.75 (0.30, 1.90) |
| Pathologic radiolucency | 6 | 1 | 1.14 (0.69, 1.90) |
| Pathologic root resorption | 6 | 1 | 1.20 (0.61, 2.34) |
| Pulp canal obliteration | 6 | 1 | 0.11 (0.01, 1.98) |
*due to lack of events
Abbreviations ‐ CI: confidence interval; FS: ferric sulfate.
