1. Prepare a pot of boiling water and a bowl of cold water.
2. Place the gum shield in the boiling water (off the heat) for 30 seconds.
3. Remove the gum shield and place it in the cold water for 1 second.
4. Position the gum shield in your mouth around your upper teeth and press your lips together with your fingers.
5. Hold the gum shield in this position to mold it to the front teeth. Note: Do not bite down on the material.
6. Place the gum shield back in the boiling water for 2 seconds, then remove it. It should now be molded around your upper teeth.
7. Secure the gum shield by pressing your tongue against the back of your upper teeth and biting down firmly into the gum shield.
8. Once fitting is completed, place the gum shield in the cold water to set the shape.