A mouthguard lessens the impact received to the teeth during sports or rough play. The consequence of not wearing a mouthguard can be chipped or broken teeth, root canal or tooth loss.
A standard mouthguard covers only the top teeth. Sports like boxing, kickboxing, ect. require higher impact mouthguards . These one-piece mouthguards cover both the top and bottom teeth and are made of a stronger material.
Christopher Poloniato 2005
Ontario Grade 1 Chess Champion