Abstract: A disposable refill cartridge, for use with a reusable base and a reusable dispensing head for the simultaneous coextension of at least two flowable materials. The disposable refill cartridge has a hollow inner cylinder for containing a flowable material. The inner cylinder has a first generally open top end which can be temporarily sealed until the refill cartridge is combined with a reusable dispensing head. The second or bottom end of the refill cylinder telescopically and slidingly accommodates a piston head which is compressibly engagable with a piston rod of the reusable base. The piston head rides sealingly along the interior walls of the inner refill cylinder when compressed by the piston rod forces the flowable material to flow out of the refill cylinder and through outlet means of the dispensing head. Once the flowable material has been expended, the refill cartridge can be discarded and a new one can be used in conjunction with the reusable base and dispensing head.

Abstract: This invention relates to an improved composition for inhibiting dental plaque and calculus formation, comprising zinc ions and a non-toxic, organoleptically acceptable antibacterial agent in an orally acceptable medium, and to a process for retarding the growth of dental plaque and calculus by application to the teeth of the above composition.