Be sure to never concede your baby to fall asleep with a bottle. This will lead to tooth decay. Whether a baby is bottle fed or nursed, he will be vulnerable to baby bottle tooth decay. Such decay occurs when freshly sprouted baby teeth are exposed to liquids containing sugars (basically, anything other than water) for long periods of time. Bacteria in the mouth will grow in the sugar, which attack the tooth enamel and cause cavities. The perfect treatment for baby bottle tooth decay is prevention.