If your baby has only 2-4 teeth you can use a washcloth or a finger brush with water. When the back teeth (molars) come in, you will need a toothbrush to clean the grooves that those teeth naturally have. Also, as soon as your child can hold a toothbrush on his/her own – even before they can brush – it is important that you give your child a toothbrush in the morning and at night. This will help them establish the healthy habit of brushing two times per day. The earlier this routine is established, the more lasting and permanent the habit of brushing twice daily will become.