| Abstract: |
Toothpastes are one of the mostly used cosmetic preparations, in addition to enhancing personal appearance by maintaining „: cleaner teeth, brushing with a toothpaste reduces the incidence of tooth decay, helps maintain healthy gingivae and reduces the intensity of mouth odours. A toothpaste, composed mainly of a polishing agent , a humectant , a surfactant, flavours and sweetening agents, a preservative and ,1 binding agent. Each of these ingr¬edients plays an important role in toothpaste’s properties and performance .The binder, being one of the most important ingredients in the toothpaste, is known to have a prime influence on the toothpaste quality. Essentially all binders are hyDROPhilic colloidal polymers which disperse or swell and absorb water to form viscous liquids. Synthetic cellulose derivatives, alginates and carrageenans are among the binders of common use in toothpastes. The viscosity of the aqueous solution of these binders is a determinant factor in their efficiency. The proper choice of the binder usually improve the properties of the toothpastes particularly, consistency, appearance of the extruded ribbon, dispersion in the mouth, attenuation of flavour, foaming , and prevention of hardening or syneresis .
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