Abstract: A replacement head for an electromagnetic toothbrush drive includes a mechanical linkage assembly for converting linear drive motion into rotational movement of the brush head. The mechanical linkage assembly includes a fixed shaft and a lever arm that extend between a movable bottom member and a fixed top member, and a link member rotatably connected to the top member and the brush head. The lever arm pivots about a fulcrum formed in the top member, and engages the link member. When the bottom member oscillates as a results of the actuation of the electromagnet in the drive unit, the lever arm pivots about the fulcrum and drives the link member to rotate in an arc shaped pattern. The rotation of the link member consequently rotates the brush head.

Abstract: A molded interdental tool includes a plurality of filament strands molded into a portion of the tool. The interdental tool includes a body having a handle portion and a pick portion. The filament strands are molded into the pick portion, with at least a portion of the filament strands protruding or extending from the pick portion. A middle portion of the filament strands may be molded into the pick portion, such that end portions of the filament strands protrude from opposite sides of the pick portion.

Abstract: An oral treatment composition that includes a carrier, an active agent and a silicon dioxide compound. The active agent can be a variety of compositions, such as dental whitening or bleaching agents, desensitizing agents, antimicrobials, anti-plaque agents, remineralizing agents, anti-tartar agents, mouth fresheners, and anesthetics. Optionally, a processing aid can be added to the composition to streamline manufacture of the gel. The composition can be formed as a bead in a dental tray so that when a user applies the dental tray to their dental arch, the bead readily spreads over the surfaces of the teeth without the user having to supply significant force to achieve such spreading.

Abstract: An oral care strip includes a substrate having a first side and a second side. An oral care substance is disposed on the first side and a flavor element is attached to the second side. The flavor element may be a dissolvable, edible, flavored film. A method for forming the oral care strip includes the steps of a) applying an oral care substance to a first side of a substrate and b) attaching a flavor element to a second side of the substrate. The second side of the substrate may include a wax layer to which the flavor element is attached.

Abstract: An oral care composition including a hydrophilic, aliphatic, polyether-based thermoplastic polyurethane, a glycol polymer, and a poly(N-vinyl lactam). These components form a tacky film having a thickness of about 1 mils to about 50 mils. A whitening agent, such as a peroxide, can be absorbed into the tacky film, and adapted to desorb from the tacky film to whiten teeth to which the film is joined. A method is also provided in which the components are extruded through a twin screw extruder and output to a die to produce the film. The whitening agent can be deposited on the film and absorbed by the film to form a relatively stable oral care composition including the whitening agent.