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Inclusion criteria of the studies.
| Inclusion Criteria |
|---|
| Adult participants (18 years of age or older) |
| Studies measuring a change in interproximal plaque, measured using the Rustogi Modified Naval Plaque Index (RMNPI), Turesky modification of the Quigley–Hein index (TMQH) or wet weight of plaque. |
| Studies investigating self-performed oral hygiene |
| Studies with a randomised controlled trial design |
| Studies published since the year 2000 |
