Abstract: A tooth whitening chewing gum composition effective to remove stains from teeth is prepared from a mixture of a chewing gum base, plasticizing, sweetening, flavoring agents, and about 0.5 to about 5.0% by weight of a silica particles, the particles containing about 5 to about 35% by weight water and having a mean particle size from 5 to 12 microns; an Einlehner hardness of from 1 to 20; an oil absorption value of from 40 to less than 100 cc/i 00g; and, a BET surface area from 100 to 700 m2/g of silica.

Abstract: A continuous process for preparing a paste or cream like material which comprises the steps of means for forming under non vacuum conditions at a temperature of 90.degree. F. to 120.degree. F. a first low viscosity homogenous slurry of at least one non aqueous solvent and a gelling or bodying agent; means for forming a second low viscosity homogenous slurry under non vacuum conditions at a temperature of 90.degree. F. to 130.degree. F., means for forming a low viscosity mixture of said first low viscosity slurry and said second low viscosity slurry by a high shear mixing under non vacuum conditions at a temperature of 90.degree. F. to 130.degree. F. for 0.1 to 5 seconds; means for transforming under non vacuum and non mixing conditions at a temperature of 65.degree. F. to 120.degree. F. said low viscosity mixture into a non Newtonian mixture; and means for deaerating said non Newtonian mixture under vacuum conditions for a period of less than 3 seconds to form said paste or cream like material.