I was given one of these as a Christmas gift. The bristles do not move at all, instead the whole handle/toothbrush vibrates. You have to use just about as much effort to brush as a standard toothbrush, because otherwise your teeth feel just as slimy as they were to begin with. I would recommend skipping this one in favor of one where the bristles move/spin on their own.
My 5 year old got a Dora one with spinning head from Colgate, and the dentist commented how clean her teeth were, and was surprised that she brushes her teeth without help.
4.89 overall from 19 reviews
from $14 at 15 merchants