Table 5. | Risk of bias in the included studies (history of periodontitis) |
| Selection | Comparability | Outcome | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 1 | 1 | 2 | 3 | Total | |
| Karoussis et al. [31] | ★b | ★ | ★a | ★ | ★b | ★ | 6★ | ||
| Gatti et al. [32] | ★b | ★ | ★a | ★ | ★b | ★ | ★b | 7★ | |
| Swierkot et al. [33] | ★b | ★a | ★ | ★b | ★ | 5★ | |||
Table 5. | Risk of bias in the included studies (history of periodontitis) |
| Selection | Comparability | Outcome | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 1 | 1 | 2 | 3 | Total | |
| Karoussis et al. [31] | ★b | ★ | ★a | ★ | ★b | ★ | 6★ | ||
| Gatti et al. [32] | ★b | ★ | ★a | ★ | ★b | ★ | ★b | 7★ | |
| Swierkot et al. [33] | ★b | ★a | ★ | ★b | ★ | 5★ | |||
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