Try mashed potatoes, yogurt, soup, or pretty much any other item that doesn't need chewing. If food becomes trapped in the expander, simply rinse it off with water. No, if you consume the correct stuff. Hard foods, such as chips and cookies, can be challenging because they exert pressure on your teeth when you bite into them. This pressure causes tension which can lead to tooth pain or injury. However, there are products available that claim to be able to expand in water like a balloon and then pop up to sit firmly inside your mouth without going down. These products claim to be able to move around while you're eating and not cause discomfort. They also claim to protect your teeth by preventing foods that might otherwise damage them from reaching their destination. However, studies have shown that these devices do not prevent injuries to your teeth due to excessive pressure when you chew hard foods. In fact, one study found that patients who used oral implants before having expander surgery suffered from more complications after their wounds healed than those who had never used dental implants before. The reason for this is that people who use expanders usually don't practice proper dental hygiene after surgery. They forget about any remaining stitches in their mouths and let bacteria grow behind their ears or between their teeth. This infection can spread to other parts of their body where it can become life-threatening. In conclusion, you can eat chips with an expander but you should try not to force them down if they're causing you pain.