The present invention relates to devices and systems for detecting the existence of oral conditions. In one aspect, the invention is a device including a detector capable of detecting a marker of an oral condition; a self-contained indicator that is actuated by a signal from the detector, wherein the indicator is one of a structural indicator adapted to undergo a physical change that is haptically perceptible, a dye adapted to be released into a user's mouth, and a flavor adapted to be released into a user's mouth; and wherein said device is detachably securable to an oral care implement.