ORAL CARE COMPOSITION FOR BLEACHING OF TEETH Russian patent published in 2019 - IPC A61K8/02 A61K8/49 A61K8/73 A61Q11/02 

FIELD: medicine; dentistry.

SUBSTANCE: group of inventions relates to the field of oral care products for teeth bleaching, and methods for their use. Oral care composition for teeth bleaching is proposed, obtained by combining ingredients, including: (i) flocculated particles from a water-soluble bleaching film containing a) a film-forming polymer comprising hydroxyalkylcellulose, where hydroxyalkylcellulose is characterized by a viscosity of 1 to 1000 millipascals-seconds (MPa⋅with), determined for 2 % by weight of an aqueous solution of film-forming polymer at 20 °C using a Ubbelohde capillary viscometer; and (b) at least one pigment with a color tone angle in the CIELAB system in the range of 200 to 320 degrees, (ii) at least one dye with a hue angle in the CIELAB system in the range of 200 to 320 degrees; and iii) a carrier medium acceptable for use in the oral cavity, containing more than 18 % water. Method of temporary teeth bleaching, including the introduction of an effective amount of the above composition in the oral cavity of the subject. combination of coloring matter with pigment or pigments, enclosed in the above-mentioned film particles, improves the whitening effect of both the pigment and the coloring matter, taken separately, and increases the overall effectiveness of bleaching when using the composition.

EFFECT: oral care composition for teeth bleaching is proposed.

20 cl, 3 ex, 3 tbl