Do not use if you are under 18 years of age; have TMJ; have teeth or jaw pain; or if the dental guard is broken or damaged. Do not use for more than 12 hours in a 24 hour period. Not for use with dentures, braces or other dental appliances.
Do not use for more than 3 months from the initial use without consulting your dentist. Ask a dentist before use if you have loose fillings, loose caps, or unfilled cavities; jaw clicking or pain, teeth pain, face pain, difficulty chewing, mouth sores, gum disease or bleeding gums, or serious respiratory problems. While using the product, see your dentist at least every 6 moths.
Stop use and see a dentist if you develop loose teeth or a change in your bite; experience pain or other irregularity; the product easily falls out of your mouth or causes you to gag; you develop bleeding gums, soreness, or other reaction inside your mouth.