Patent ID: 8287203

Claim:
The combination of an oral composition used in the treatment of the oral cavity and a pumping system for pumping the oral composition, comprising: an oral composition useful in the treatment of the oral cavity, the oral composition having a selected viscosity; a pumping system for moving the oral composition from a reservoir of an oral treatment system to an outlet of the system, the pumping system including a pump and a fluid pathway for the oral composition to reach the outlet, wherein the pump is so characterized and the pathway has an internal cross-sectional, area (A) within the range of 0.25 mm 2 -16 mm 2 and a length (y) within the range of 100 mm-200 mm and is otherwise so characterized by such a cross-sectional shape and cross-sectional uniformity along its length that the oral composition used with the pumping system having a minimum viscosity of 10 PaÂ·s at a shear rate of 1 s âˆ’1 and a maximum viscosity not greater than Î·(in PaÂ·s) at a shear rate Î³(in s âˆ’1 ) defined as follows: Î· = 250 â¢ A 2 4 â¢ y â¢ â¢ â¢ and â¢ â¢ Î³ = 2500 A 3 / 2 can be moved to the outlet by the pump at a rate of at least 0.1 ml per second.