Do the players on my youth team have to wear a mouthguard when theyre already wearing a full face shield ?
Yes they do, because the mouthguard is not intended to just protect the teeth from being struck by a puck or stick. The mouthguard is designed to protect the teeth and to cushion the jaw against the shock of falls and body contact, which may be involved in the transfer of such shocks to the brain and may also be involved in the causes of concussions. As a result, all youth players who are playing in the PeeWee, Bantam, Midget, or Junior classifications [who are not playing in an adult classification] MUST wear full protective equipment, including wearing a mouthguard.