Baby Bottle Decay. The cardinal sign of baby bottle decay is rampant decay over the incisor area of a child's dentition. The reason why this is allow to happen is because nobody is watching. If parent are brushing and flossing their child's teeth every night and every morning, baby bottle caries would be non-existent. It is not like the dirty diaper that screams to be changed. A parent's daily watchful eye is needed.
Front teeth cavities. Cavities form on teeth when the outer enamel is damaged by acids from bacteria or acids in the food or drink. After the enamel is damaged, a cavity reaches the inner part of the tooth, which is not as tough. Then, the tooth dissolves away more easily. Let babies use bottles only during meals or snacks, and don't let any child walk around with a drink (minimize teeth's contact with food/drink).
Enamel loss. When a baby bottle feeds, the suction bathes the front of the mouth & teeth with sugar which germs on the teeth eat and break down to an acid that will dissolve the enamel. A water rince after feeds helps reduce the effect, and moving to a sippy cup bypasses the teeth(as long as it is a hard spout, not the soft rubbery ones). Letting a baby lay down with a bottle is an invitation to decay.
Decay from milk. Children do not swallow the last sip of milk from the bottle as they fall asleep. This milk pools in their mouth and provide nutrients to the bacteria normally found in the mouth. The metabolic acids created by the bacterial demineralize the teeth and create massive amounts of decay. Giving the baby a sip of water before falling asleep may dilute the milk and minimize the risks.
Severe early decay. More correctly know as early childhood caries, it is one of the most emotionally and physically devastating oral diseases. It causes severe, rapid decay of an infant's teeth. Often the 4 upper front teeth may need to be extracted by age two and pulpotomies (baby root canals) and stainless steel crowns placed on the back teeth. The good news is it is 100% preventable with proper infant care.