The Tongue Guard is a custom-fit tray designed to protect your tongue from dental appliances. It provides a hypoallergenic barrier between the dental appliance and your tongue, preventing discomfort, sores, and potential infections. For optimal results, use the guard as soon as your dental appliance is placed to prevent any tongue-related issues. If you already have tongue sores, our guard offers instant relief and promotes faster healing. Wear it as frequently as needed until your tongue adjusts to the dental appliance. Key Features: Prevents tongue sores and infections Custom molds to fit your mouth Promotes healing for tongue sores and infections Keeps tongue away from the dental appliance, providing immediate relief Includes three trays to accommodate changes in your mouth's shape Plan ahead and order now for a more comfortable orthodontic experience. Express shipping options available Patent Pending For instructional guidance, please refer to our YouTube video." Protect your tongue from the discomfort and potential sores caused by an all-metal Rapid Palatal Expander with our Tongue Guard. Please refrain from eating or drinking while using the guard. When molding the guard to the roof of your mouth, avoid applying excessive pressure with your tongue where the metal RPE wire is located, as this may cause damage. Instead, evenly press upward with your tongue while gently sucking out the air. After molding, trim the guard to the inside edge of your teeth marks to ensure a comfortable fit without biting onto the tray. Any portion of the guard left on the biting surface of your teeth will eventually be bitten off. If you encounter any issues due to not following these instructions or if you purchased the guard for purposes other than recommended, kindly refrain from leaving a negative review. Instead, reach out to us for assistance by clicking on the shop name next to the "Sold By" text on the product page or in your order details. Made In the USA.