22. Pulpotomy (Er:YAG laser) versus pulpotomy (FS).
| Outcome | Time point (months) | No. of studies | Risk ratio (95% CI) |
| Clinical failure | 6 | 1 | Not estimable* |
| 12 | 1 | 3.19 (0.13 to 76.37) | |
| 24 | 1 | 5.31 (0.26 to 107.86) | |
| Radiological failure | 12 | 1 | 0.46 (0.13 to 1.66) |
| 24 | 1 | 0.61 (0.19 to 1.94) | |
| Overall failure | 12 | 1 | 0.46 (0.13 to 1.66) |
| 24 | 1 | 0.61 (0.19 to 1.94) | |
| Pain | 6, 12 and 24 | 1 | Not estimable* |
| Soft tissue pathology | 6, 12 and 24 | 1 | Not estimable* |
| Pathological mobility | 6, 12 and 24 | 1 | Not estimable* |
| Pathological radiolucency | 12 | 1 | 0.15 (0.01 to 2.86) |
| 24 | 1 | 0.71 (0.12 to 4.06) | |
| Pathological root resorption | 12 | 1 | 0.53 (0.05 to 5.67) |
| 24 | 1 | 1.06 (0.16 to 7.25) |
*due to lack of events
Abbreviations ‐ CI: confidence interval; Er:YAG: erbium:yttrium‐aluminium garnet; FS: ferric sulphate