Do electric toothbrushes work better than manual?
Last updated September 3, 2026.
Yes, modestly - and the gap grows with use: Cochrane found powered brushes removed 11% more plaque at one to three months, 21% more after three months. Gingivitis fell 6% and 11% over the same periods, and an 11-year cohort study found powered-brush users kept more of their teeth. The honest caveats: a well-used manual beats a lazy electric, and the biggest gains show up in inconsistent brushers - most of us. The timer and the replaced head matter more than the price tier. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
What to do
- Pick mid-range: rotating-oscillating or sonic, with a two-minute timer - the premium tiers add little.
- Change the head: every three months, or when bristles splay.
- Let the brush work: guide it tooth to tooth - scrubbing with an electric defeats the mechanism.
- Get seen if: gums bleed past two weeks of good brushing - bleeding is a gum-disease signal, not a brush problem.
Related questions
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