Further information on acute dental problems, trauma to primary and permanent teeth, and injury prevention can be found in Smiles For Life Acute Dental Problems module and Bright Futures: Oral Health- Pocket Guide (3rd ed).
Knapik JJ, Marshall SW, Lee RB, Darakjy SS, Jones SB, Mitchener TA, de la Cruz GG, Jones BH. Mouthguards in sport activities: history, physical properties and injury prevention effectiveness. Sports Med. 2007; 37(2): 117-44.