It is a good idea to skip foods that can damage or fall off braces. Hard foods such as sweets, raw carrots, corn on the cob, pretzels, nuts, popcorn and crushed ice are prohibited. Sticky foods to avoid include caramel, taffy and chewing gum. These foods can get stuck between your teeth and your gums, or you can bend the wire and tap the strap or bracket loose. If this can cause damage to the stent, treatment may be prolonged.