Anticalculus dentifrices

Details Anticalculus dentifrices Anticalculus dentifrices

A - Human Necessities

61

K

A61K 8/24 (2006.01) A61Q 11/00 (2006.01) A61K 7/18 (1995.01)

Patent

CA 2116225

Dentifrices, including toothpaste or dental creams, gels and tooth powders, incorporating alkali metal pyrophosphate salts and sodium bicarbonate in amounts effective to inhibit calculus formation on teeth. The sodium bicarbonate improves the calculus inhibiting properties of the pyrophosphate salts, permits the use of smaller quantities of pyrophosphate than required in the absence of the bicarbonate adjuvant, allows the formulation of pyrophosphate containing dentifrices without the need to use unpleasant tasting potassium pyrophosphates to prevent grittiness, and salts-out the pyrophosphate as undissolved tetrasodium pyrophosphate decahydrate in the form of relatively small particles which do not impart a gritty mouth feel upon use of the dentifrice.

On décrit des dentifrices, sous forme de pâtes, crèmes, gels ou poudres, comprenant des sels de pyrophosphate de métaux alcalins et du bicarbonate de sodium en quantités utiles pour empêcher la formation de tartre sur les dents. Le bicarbonate de sodium améliore les propriétés anti-tartre des sels de pyrophosphate; il permet d'utiliser de plus faibles quantités de pyrophosphate que celles utilisées en l'absence d'adjuvant au bicarbonate; il permet la formulation de dentifrices contenant du pyrophophate, sans avoir besoin d'utiliser des pyrophosphates de potassium au goût désagréable et évite une sensation graveleuse; il a un effet de relargage sur le pyrophosphate à l'état décahydrate de pyrophosphate de tétrasodium non dissous sous la forme de particules relativement petites ne conférant pas une sensation graveleuse dans la bouche lors de l'utilisation du dentifrice.

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