The Cochrane Collaboration

An international, not-for-profit, independent organisation that provides up-to-date healthcare information. Over 90 international review groups produce systematic reviews of healthcare interventions. Over 2,000 current systematic reviews that answer clinical questions about the effectiveness of treatments.

To learn more about the Cochrane Collaboration and view the abstract, visit

2011 Cochrane Review

Power vs. Power Systematic Review 2011 Results “The review included data from 17 trials with 1369 participants. There is evidence from seven trials of up to three months and at unclear/high risk of bias that rotation oscillation brushes reduce plaque (SMD 0.24; 95% CI 95% 0.02, 0.46) and gingivitis (SMD 0.35; 95% CI -0.04, 0.74) more than side to side brushes. Due to the dearth of trials, no other definitive conclusions can be stated regarding the superiority of one mode of powered toothbrush over any other. Only minor and transient side effects were reported.”

Deacon SA, Glenny AM, Deery C, Robinson PG, Heanue M, Walmsley AD, Shaw WC, The Cochrane Library 2011, Issue 6

2005 Cochrane Review

Efficacy of oscillating rotating brushes independently confirmed in 2 systematic reviews From the Cochrane Collaboration 1,2 Power VS Manual Systematic Review 2005 Results “ Brushes with rotation-oscillation action removed plaque and reduced gingivitis more effectively than manual brushes in the short-term and reduced gingivitis scores in studies over 3 months” “ No other powered designs were as consistently superior to manual toothbrushes”

1 Robinson P, Deacon SA, Deery C, Heanue M, Walmsley AD, Worthington HV, Glenny AM, Shaw BC. Manual versus powered tooth brushing for oral health. Cochrane Database of Systematic Reviews 2005, Issue 2. Art.No.: CD002281. DOI: 10.1002/14651858.CD002281.pub2.

2 Deacon SA, Glenny A-M, Deery C, Robinson PG, Heanue M, Walmsley AD, Shaw WC. Different powered toothbrushes for plaque control and gingival health. Cochrane Database of Systematic Reviews 2010, Issue 12. Art. No.: CD004971. DOI: 10.1002/14651858.CD004971.pub2

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