Patent ID: 9415068
Filing Date: 2016-08-16
CPC Classification: A61K,A61P,A61Q

Claim Text:
1. A method for inhibiting dentinal hypersensitivity, the method comprising: closing at least one dentinal tubule on a dentin surface by rubbing the dentin surface with a dentinal hypersensitivity inhibitor, wherein the dentinal hypersensitivity inhibitor comprises at least one tetracalcium phosphate particle (A), an alkali metal salt of phosphoric acid (B), and at least one acidic calcium phosphate particle (C), wherein the at least one tetracalcium phosphate particle (A) has an average particle diameter of 0.5 to 30 μm, wherein the at least one acidic calcium phosphate particle (C) has an average particle diameter of 0.1 to 7 μm, wherein the dentinal hypersensitivity inhibitor comprises a blended amount of the at least one tetracalcium phosphate particle (A) of 15 to 55 parts by weight relative to 100 parts by weight of a whole amount of the dentinal hypersensitivity inhibitor and a blended amount of the alkali metal salt of phosphoric acid (B) of 6.8 to 54.8 parts by weight relative to 100 parts by weight of the at least one tetracalcium phosphate particle (A), and wherein a blending ratio of (A/C) of the at least one tetracalcium phosphate particle (A) to the at least one acidic calcium phosphate particle (C) is from 40/60 to 60/40 in a molar ratio.