Hello, you should avoid eating hard food, such as bone food, and avoid eating large pieces of food. Avoiding the above foods and reducing them into small pieces can prevent the attachment of the appliance from loosening due to improper diet. Suggestion: Apples and pears should be cut into small pieces before eating. Hard food, such as ice cubes, nuts, hard biscuits, sugar cane, hard candy, crabs, lobster shells, etc.