What you eat affects your whole body, including your teeth. Caramels, cough drops, and lollipops all are bad news, but so are dried fruits like raisins. Why? They stick to your teeth and can cause decay. Soft bread can also get stuck in your ivories. If you want a snack that's good for your grill, go for the cheese. It helps your mouth make saliva. It can also give your teeth a boost of calcium to make them stronger. And it’s low in sugar.