A professionally fitted mouthguard helps absorb the shock experienced by a knock to the face that might otherwise result in an injury to the mouth, or jaw. Dentists often see the results of heavy collisions during sports which lead to chipped or broken teeth, internal damage to the teeth, loss of a tooth, soft tissue injury, and even concussion or a broken jaw. These injuries can lead to long and expensive treatment to restore the teeth to normal function and appearance. Mouthguards work as shock absorbers to cushion the blow, minimising the risk of these injuries.