US Patent 10179038 Oral care device with sacrificial electrode

An oral care implement includes a housing defining a cavity and configured for at least partial insertion into an oral cavity. An opening in the housing fluidly connects the cavity to an environment of the housing. First and second spaced electrodes are disposed in the cavity. An electrical connection electrically connects the first electrode and the second electrode to a power source. At least one of the first electrode or the second electrode is a sacrificial electrode and passing a current through the electrical connection causes the sacrificial electrode to oxidize.