Take the mouthguard along to your dental visits to ensure it still fits correctly. A mouthguard may need to be replaced as changes occur in your mouth, such as the eruption of permanent teeth or restorations.
Mouthguards need to be rinsed in cold water before use. After use, dry and store in a plastic container with air vents to allow the air to circulate.
Once in a while, clean it with soapy water and rinse thoroughly.
Mouthguards should be kept in a cool place as they can distort if left in the sun or hot water.