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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Calculus at 6 months (Volpe‐Manhold Calculus Index in mm ‐ mean total calculus per participant) | 2 | 415 | Mean Difference (IV, Fixed, 95% CI) | ‐2.12 [‐3.39, ‐0.84] |
| 2 Calculus at 7 months (Volpe‐Manhold Calculus Index in mm ‐ mean height of calculus) | 1 | 78 | Mean Difference (IV, Fixed, 95% CI) | ‐0.04 [‐0.21, 0.13] |
