Nursing bottle caries
Nursing caries, or tooth decay, can be caused when your child sleeps with a bottle. This condition is also called baby bottle tooth decay. It is caused when a child goes to bed with a bottle filled with milk or juice — anything except water.
Why baby bottles need to used with caution
Man Wai Ng, MD, dentist-in chief, at Boston Children's Hospital, says: "Bottles and sippy cups containing juice or any fermentable carbohydrate allow frequent or prolonged consumption, which increases tooth decay risk. Sleeping with a bottle containing anything other than water should be discouraged."