The bacteria that cause decay are in everyone’s mouths. Babies get these decay-causing bacteria from their caregivers, mom and dad, just as we all are exposed to germs in our families. These bacteria then stick onto the baby teeth. Brushing the teeth to clean off the bacteria is important to keep teeth healthy. Bacteria on the teeth use the sugar in foods and drinks and turn it into acid. Each time your child eats or drinks, this acid can attack the teeth for 20 minutes or longer after eating or drinking. Over time, enamel gets damaged, tooth decay develops and cavities appear.Children are more likely to get decay if their teeth are in contact with sugar often or for long periods of time. Babies should not be put to bed with a bottle. If your baby falls asleep with the bottle in his or her mouth, the liquid in the bottle pools around the teeth. Liquids such as fruit juice, soda and even milk contain sugar. Plain water in a bottle or sippy cup at the end of the day is a better choice.