Rates of cavities are rising in part because of what, and how often, kids are eating. They’re consuming more processed carbohydrates like pretzels and crackers, and also more sweets, juice and soda than in the past. The bacteria that feed on sugar erode the structure of the teeth by depleting calcium. Once an area without calcium becomes large enough, the surface of the tooth collapses resulting in a cavity. Here are some tips to help you navigate your child’s oral health: For Babies …