Foods that hurt:
It seems strange that fruits like lemons and grapefruits, which are rich in vitamin C and offer your body lots of nutritional value, could be so damaging to your teeth. Aside from their high vitamin content, they are also extremely acidic, meaning they will wear away at your enamel over time. Since these fruits are great for your otherwise, you shouldn’t avoid them all together- just limit the amount you eat per day and brush afterwards.
–Hard and Chewy Candies
Chewy candy like caramel or taffy sticks to your teeth for a long time, giving bacteria extra time to interact with the sugar and produce enamel-eroding acid. Hard candies, while not as sticky, sit in the mouth for an extended period of time while they dissolve, bathing your teeth in sugary residue. Many sour and chewy candies are also flavored with citric acid, the same substance that makes lemons and limes dangerous to tooth enamel.