What causes tooth decay in babies and young children?

At your child’s first visit, the main emphasis will be on teaching you how best to take care of your child’s teeth. A big concern is called early childhood caries (also known as baby bottle tooth decay or nursing caries). Children risk severe decay from using a bottle during naps or at night or when they nurse continuously (on-demand or at will feeding) from the breast. Drinking juice, soda or tea from a bottle should be avoided.