Abstract: Apparatus for storing and heating medical or dental examination instruments includes a treatment cabinet having a number of drawers including an instrument drawer located immediately beneath a ledge mounted in the interior of the treatment cabinet. The ledge is formed with a recess within which a heat conductive plate is mounted having heating elements affixed thereto. The heating elements are effective to heat the heat conductive plate, which, in turn, elevates the temperature of the interior of the instrument drawer in excess of the body temperature of a patient. Examination instruments stored within the instrument drawer are heated to the same, elevated temperature in preparation for use in examining a patient.