Given that children are not thrilled about brushing their teeth, at least with an electric toothbrush they do a better job than with a regular one. I believe it does the job (I also use an electric one)

I use it on children aged 3.5 and 4.5 years old. They accepted it pleasantly and I brush their teeth myself. It is very helpful because before I used to make circular movements with a regular toothbrush and brushing their teeth was a struggle. With 2 children, I have to charge it every 3-4 days, but if it is intended for one child, I believe once a week is enough. I highly recommend it.

We initially bought it for our own child and I have to say that he loved it. He brushed his teeth more often and for a longer time. Then we also got it for our friends as a gift and I can say that they had the same reaction. Very good purchase!