A mouthguard is a dental device that is worn over the teeth to protect them from damage. Mouthguards are commonly used in sports, such as football, basketball, and hockey, where there is a risk of contact with other players or objects that could cause injury to the teeth.
Mouthguards can also be used to protect the teeth from grinding or clenching, which can damage the teeth over time. Grinding or clenching can be caused by stress, anxiety, or other factors.