US Patent 9968777 Power harvesting oral device

An oral care implement may be embodied as an oral care device for placement in the oral cavity. The oral care device may include a support component, a piezoelectric component, and a therapeutic element. The support component is configured for placement between one or more maxillary teeth and one or more mandibular teeth. The piezoelectric element is configured to generate an electrical current from relative movement of the maxillary teeth and the mandibular teeth. The therapeutic element is electrically connected to the piezoelectric component and is configured to release a therapeutic composition into the oral cavity at least in part in response to receiving the electrical signal.