21. Pulpotomy (FS) versus pulpotomy (ZOE).
| Outcome | Time point (months) | No. of studies | Risk ratio (95% CI) |
| Clinical failure | 6 and 12 | 1 | Not estimable* |
| 24 | 1 | 1.20 (0.42 to 3.43) | |
| Radiological failure | 6 | 1 | 0.33 (0.01 to 7.81) |
| 12 | 1 | 0.20 (0.01 to 3.97) | |
| 24 | 1 | 0.60 (0.26 to 1.40) | |
| Overall failure | 6 | 1 | 0.33 (0.01 to 7.81) |
| 12 | 1 | 0.20 (0.01 to 3.97) | |
| 24 | 1 | 0.38 (0.11 to 1.25) | |
| Pain | 6, 12 and 24 | 1 | Not estimable* |
| Pathological radiolucency | 6, 12 and 24 | 1 | Not estimable* |
| Pathological root resorption | 6 | 1 | 0.33 (0.01 to 7.81) |
| 12 | 1 | 0.33 (0.01 to 7.81) | |
| 24 | 1 | 0.17 (0.02 to 1.29) | |
| Physiological root resorption | 6 and 12 | 1 | Not estimable* |
| 24 | 1 | 1.50 (0.27 to 8.22) | |
| Pulp canal obliteration | 6, 12 and 24 | 1 | Not estimable* |
*due to lack of events
Abbreviations ‐ CI: confidence interval; FS: ferric sulphate; ZOE: zinc oxide and eugenol