Electric vs. Manual Toothbrush
Both can clean teeth effectively when used correctly, but powered brushes — especially oscillating-rotating and sonic — remove more plaque and reduce gingivitis better in most studies.
Key Facts
- Cochrane reviews show powered brushes reduce plaque and gingivitis more than manual
- Oscillating-rotating heads have the strongest long-term evidence
- Pressure sensors prevent the #1 cause of brushing damage: scrubbing too hard
- A manual brush used with proper technique still works well
What the Evidence Says
A 2014 Cochrane meta-analysis of 56 trials found powered brushes reduce plaque by 11% and gingivitis by 6% at 1–3 months, with larger effects at 3+ months. Oscillating-rotating models had the most consistent benefit.
When Manual Is Fine
If you brush twice daily for two minutes with a soft brush and modified Bass technique, a manual brush can match a powered one for many people.
Choosing a Powered Brush
Look for a soft, small head, a built-in two-minute timer, and a pressure sensor that warns you to ease off.