The frequency of replacement depends on several factors, including the rate of wear and tear, whether you have new dental work and changes in the structure of your mouth (especially relevant for children with growing teeth). As a general rule of thumb, it’s advisable to have your mouthguard inspected by a dental professional at least once a year and to consider replacing it every one to two years.
Custom mouthguards serve as a buffer between external forces and your teeth and gums. The precise fit ensures that the force from any impact is evenly distributed across the mouthguard and absorbed, significantly reducing the risk of injuries such as tooth fractures, dislocations and cuts to the soft tissue. The snug fit also minimises movement of the mouthguard during physical activity, so you’re less likely to bite down on your tongue or inner cheek.