Some 2-3 year old babies will have blackened or chipped milk teeth soon after all of their milk teeth have grown out. Baby’s teeth turn black, there are generally two reasons, according to different reasons, take different treatment measures: First, bottle caries, milk teeth bad, if this is the case, the mother can use a soft gauze over the fingertips, in the baby after eating, dipped in water or light saline, you can also smear a little toothpaste, gently wipe the baby’s teeth surface, not only to clean the mouth, but also help the growth of teeth. At the same time to try to avoid too long with a pacifier bottle, drink sweet water, or sleep with the mother’s nipple habit, try not to eat sweets before going to bed at night. Secondly, it is not the milk teeth bad, just pigmentation deposits on the teeth, the health of the teeth itself has no effect, just affect the beauty of the teeth, you can eat less sweets in daily life, or sticky, darker food, must develop good cleaning habits, after eating, timely brushing and rinsing.