Mouthguards, headgear not worn regularly.
D000293:Adolescent; D001265:Athletic Injuries / Q000517:prevention & control; D002648:Child; D006260:Head Protective Devices / Q000706:statistics & numerical data*; D006801:Humans; D009064:Mouth Protectors / Q000706:statistics & numerical data*; D013177:Sports; D014481:United States