Most of people have doubt if those inexpensive battery-operated toothbrushes work as well as pricier rechargeable ones.
In fact, as long as you hit all surfaces of the teeth, any brush, powered or manual, will clean well. The cheaper models use mechanics similar to the more expensive ones, without the bells and whistles.
That said, in a review, a rotational oscillating brush (bristles rotate in one direction, then the other) removed the most plaque. Brush twice daily for two minutes regardless whichever type you use. And even the priciest brush does not eliminate the need to floss.
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