A mouth guard (10) of "C" shape so as to provide a forward portion (11) and a pair of rearwardly extending arms (12). The mouth guard (10) includes a body (17) that provides flanges (13, 14) as well as a base (15). Rear shields (19) are embedded in the base portions (20) of the arms (12), the shields (19) are preferably of a corrugated configuration so as to have ridges (23) separated by troughs (24).
