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| Outcome | Time point (months) | No. of studies | Risk ratio (95% CI) |
| Pain | 24 | 1 | 1.80 (0.07 to 43.88) |
| Soft tissue pathology | 24 | 1 | 4.21 (0.22 to 80.70) |
| Pathological radiolucency | 24 | 1 | 0.60 (0.25 to 1.46) |
| Pathological root resorption | 24 | 1 | 21.04 (1.28 to 346.39) |
| Pulp canal obliteration | 24 | 1 | 27.05 (1.66 to 441.49) |
Abbreviations ‐ CI: confidence interval; FS: ferric sulphate; Sedanol=ZOE: zinc oxide and eugenol.
