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The Electronic Caries Detector is for use by dental professionals as an aid in the diagnosis and monitoring of dental caries.

The ECD is a portable instrument that provides an electrical current source, a meter with a digital read-out between 00 and 100, and indicator and reference electrodes to aid in the detection and monitoring of non-cavitated and cavitated caries lesions in teeth. The ECD indicator electrode is comprised of a replaceable, single-use, stainless steel probe tip. This component is sized and dimensionally configured to achieve close contact with the tooth being examined. The tip ensures electrical contact with dentinal fluid at sites that are not readily accessible or evaluated using traditional means. The ECD indicator electrode is paired with a reference electrode to complete the necessary electrical circuit. The reference electrode is a stainless steel lip hook that rests on the patient's lower lip. The device is powered by a 9 volt alkaline battery, regulated down to 5 volts. The unit has a 2 ½ digit LCD display, two timer circuits, and a beeper. The first timing circuit is triggered upon circuit completion. The beeper sounds for 3 seconds, the probe is then removed, and the second timer holds the display for 5 seconds. Then the display returns to zero, ready for the next measurement.