arch 22 will engage or touch a portion of the roof of the wearer 39 s mouth various conventional temperature sensors can be provided in one embodiment it is contemplated that the temperature sensor 30 a would be a platinum temperature sensor that would be operative to measure or sense temperature where a current is directed through the platinum temperature sensor it should be appreciated that the temperature sensor 30 a could be incorporated into the mouth guard 12 in other ways for example the temperature sensor 30 a could be embedded attached or fastened to portions of the main body of the mouth guard 12 in the case of a platinum temperature sensor such a sensor has the advantage of being inert and non toxic in the environment of a human mouth further a platinum temperature sensor is advantageous in that it is capable in sensing temperatures accurately in the temperature range typically found in human beings as noted before temperature monitoring system 10 includes an indicator unit 32 indicator unit 32 functions to receive a temperature reading or a series of temperature readings which could be in the form of signals from the temperature sensing unit 30 and based on the received temperature reading or readings determine if the sensed temperature indicates that the core body.