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Manual versus powered toothbrushes: the Cochrane review
1DSM-Forsyth Center for Evidence-Based Dentistry, The Forsyth Institute, Boston, Mass. 02115, USA. rniederman@forsyth.org
Journal of the American Dental Association (1939)
|October 8, 2003
Summary
Powered toothbrushes with a rotating-oscillating action offer a modest but significant benefit in reducing plaque and gingivitis compared to manual toothbrushes. This systematic review analyzed randomized controlled trials to assess toothbrush efficacy.
Area of Science:
- Oral Health
- Dental Hygiene
- Evidence-Based Dentistry
Background:
- A 2003 Cochrane Collaboration report reviewed powered versus manual toothbrush effectiveness.
- This review generated significant public and media interest.
Purpose of the Study:
- To systematically review and analyze randomized controlled trials comparing powered and manual toothbrushes.
- To determine the clinical effectiveness of powered toothbrushes in reducing plaque and gingivitis.
Main Methods:
- Searches of multiple databases (Cochrane, MEDLINE, CINAHL) and manufacturer data.
- Inclusion criteria: randomized trials, general population, plaque/gingivitis data, ≥28 days, published ≤2001.
- Meta-analysis of 29 trials involving ~2,500 participants.
Main Results:
- Only rotating oscillating powered toothbrushes showed a consistent, statistically significant benefit.
- The clinical benefit in reducing plaque and gingivitis was modest.
- 354 trials were initially identified, with 29 meeting inclusion criteria.
Conclusions:
- Certain powered toothbrushes with rotation-oscillation action provide a significant, albeit modest, reduction in plaque and gingivitis.
- This finding supports the use of specific powered toothbrush designs for improved oral hygiene.
