The efficacy of powered toothbrushes :‐A Systematic Review and Network Meta‐Analysis‐

Aim

This systematic review and network meta-analysis synthesizes the available clinical evidence concerning efficacy with respect to plaque scores following a brushing action with oscillating-rotating (OR) or high-frequency sonic (HFS) powered toothbrushes (PTB) compared to a manual toothbrush (MTB) as control.

Material and methods

Databases were searched up to April 15, 2021, for clinical trials that evaluated the efficacy of a PTB with OR or HFS technology compared to an MTB on plaque removal after a single brushing action and conducted with healthy adult patients. Meta-analysis (MA) and a network meta-analysis (NMA) were performed.

Results

Twenty-eight eligible publications, including 56 relevant comparisons, were retrieved. The overall NMA results for the mean post-brushing score showed a statistically significant difference for the comparison between an OR PTB and an MTB (SMD=-0.43;95%CI[-0.696;-0.171]). The change in plaque score data showed a significant effect of a PTB over an MTB and OR over HFS. Based on ranking, the OR PTB was highest, followed by the HFS PTB and the MTB.

Conclusion

Within the limitations of the present study design, based on the outcome following a single brushing action, it can be concluded that for dental plaque removal there is a high certainty for a small effect of a PTB over an MTB. This supports the recommendation to use a powered toothbrush for daily plaque removal. There is moderate certainty for a very small benefit for the use of a powered toothbrush with an OR over an HFS mode of action.

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