Oral devices are provided, including oral brushes that include bristle tufts and a rocking member having radially extending protrusions constructed to penetrate between a user’s teeth. The vial units are formed in a series and the vial units have a drug therein. The method and system include allowing a user of a first one of the peer nodes to invite at least one visitor to view images hosted on the first peer node, and allowing the visitor to browse the images on the first peer node and to select one or more images to print by filling-out a print request form that identifies only the visitor and the selected images. 01 ppm, to 1,000 ppm by weight of a transition metal or alloy thereof based on the first solution weight content.