For children between 6 and 15, their custom mouthguard should be replaced every season to accommodate their growing and changing mouth and teeth. If you notice your child regularly removing their mouthguard and chewing it, this is a good sign it isn’t comfortable and should be replaced.
Adults should replace their mouthguard every 2-3 years, but be sure to inspect it every year for damage or changes. If you begin to notice your mouthguard is loose or that it rubs on your gums resulting in sore spots, these are other signs it’s time to be replaced.