Whatever you eat & drink affects your teeth. Too much of carbohydrates (including cakes, cookies, milk and other sugary food and beverages) and starches (including potato chips etc) causes tooth decay.
The duration of carbohydrates and starch remains on the tooth surface is the main culprit which leads to the decay of the tooth.
The best you can help is by making sure you select healthy food.
Offer fruits and vegetables as a snack instead of carbohydrates. Fruits that contain a high volume of water, such as pears, melons, celery, and cucumbers are best.
Raisins, dried figs, granola bars, oatmeal or peanut butter cookies, jelly beans, caramel, honey and syrup stick to teeth making it difficult to wash away from tooth. If you consume these types of products, have them brush their teeth immediately after eating.
If you plan to give your child any sweets, try giving them as desserts immediately after the meal. There's usually an increased amount of saliva in the mouth around mealtime, making it easier to wash food away from teeth.
Frequent snacking, without brushing immediately afterwards, provides constant fuel for bacteria to feed on, which leads to plaque development and tooth decay. Brush teeth immediately after consuming the snack if possible.
Lollipops, hard candies, cough drops, and mints all contribute to tooth decay because they continuously coat the teeth with sugar.
It can be difficult to help learn the best foods and drinks to keep their mouth healthy, but starting early is the best way to ensure great oral and overall health.