Electric or manual toothbrush?
Research has shown that rotating electric toothbrushes remove plaque better than normal manual toothbrushes. They therefore ensure better oral hygiene. If you do opt for a manual toothbrush, go for a soft brush.
There are special children's brushes for children. They are smaller and therefore more suitable for children's mouths. Brushing with an electric toothbrush is fun for children. It contributes to the motivation to take good care of their teeth.