Abstract: There are provided shelf stable liquid concentrates for dilution to form dental rinse compositions for loosening and removing plaque present on dental surfaces, while reducing the level of plaque forming bacteria present in the oral cavity consisting essentially of an aqueous or an aqueous and alcoholic carrier for the ingredients of said concentrate, wherein the ingredients include about 0.1% to about 10% by weight of said concentrate of an oral surfactant, suitably an anionic surfactant, at least about 1% by weight of said concentrate of sodium benzoate, and sufficient pharmaceutically acceptable acid to maintain the pH of said concentrate in the range of about 6.2 to about 5.6. These concentrates, in order to be used, are diluted to form dental rinse compositions, with water, in the ratio of between about 1 to about 15 parts by weight of water to 1 part by weight of concentrate, resulting in a pH in the range of about 6.0 to about 4.7.

Abstract: An oral irrigator device is formed of an adapter mountable in interposed relation between a supply pipe of treatment liquid, generally water, and a shower head, a user-graspable handpiece, and a flexible liquid-communicating hose connecting the adapter and handpiece. A rotatable turbine within the adapter generates, from the continuous-flow stream of treatment liquid from the supply pipe, a pulsating stream of the liquid for delivery to the handpiece through a normalizing flow regulator and the flexible connecting hose. In the handpiece, the pulsating stream is separated into a primary stream for discharge through an appliance head carried on the handpiece and a secondary stream that is directed into an expansion chamber partially bounded by an elastic diaphragm which separates the chamber from a storage reservoir for a flowable medicament.

Abstract: The hand-held oral irrigating device of the invention is substantially self-contained and powered solely by an input stream of continuous flow treatment liquid, such as water from a conventional supply line. The device includes a internal turbine that is rotated by one portion of the input stream and which generates a pulsatile flow of the treatment liquid from a second portion of the stream by interruptedly passing the second portion through apertures defined in the rotating turbine. The rotating turbine concurrently operates a gear pump for mixing a stored medicament, at a rate controlled by the rotation of the turbine, with the pulsatile flow of treatment liquid at a predetermined and substantially constant volumetric ratio. The resulting combined pulsatile flow of treatment liquid and medicament is discharged through a releasably mounted appliance head or tip for use, by way of example, in cleaning the teeth and stimulating the gums of the user.