Child Specialist Ghaziabad. What is the best toothbrush and toothpaste for children? It is important to choose the right toothbrush one designed especially for children aged 2-5 years.These toothbrushes have small oval heads, soft bristles of different heights and nonslip, and cushioned handles.They may have cartoons and fun designs on the handle, which your child might like. Some information given above in the image.