Porous polymer coating for tooth whitening

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/81 (2006.01) A61Q 11/00 (2006.01)

Patent

CA 2747403

The present invention relates to a tooth- whitening composition comprising (i) a substantially water-insoluble and substantially non-degradable polymer matrix component capable of adhering to the surface of a tooth, provided that if the polymer matrix component is in non-solid form, it is solidifiable by chemical alteration; and (ii) gas- or liquid- filled pores embedded in said polymer matrix component, wherein at least a portion of said gas- or liquid-filled pores have at least one size dimension in the range of about 70 nm to about 5 microns, and wherein the gas- or liquid- filled pores and polymer matrix component possess a difference in refractive index of at least 0.1. The invention is also directed to a tooth- whitening system containing the above composition in combination with an applicator device. The invention is also directed to methods for applying the tooth- whitening composition onto teeth.

La présente invention concerne une composition de blanchiment des dents comprenant (i) un composant de type matrice polymère essentiellement insoluble dans l'eau et non dégradable, se révélant capable d'adhérer à la surface d'une dent, sous réserve que si le composant de type matrice polymère se présente sous une forme non solide, il puisse se solidifier sous l'effet d'une modification chimique ; et (ii) des pores remplis de gaz ou de liquide et enchâssés dans ledit composant de type matrice polymère. La taille d'au moins une partie desdits pores remplis de gaz ou de liquide se situe dans un intervalle d'environ 70 nm à environ 5 microns, tandis que lesdits pores remplis de gaz ou de liquide et ledit composant de type matrice polymère présentent une différence en terme d'indice de réfraction au moins égale à 0,1. L'invention concerne également un système de blanchiment des dents constitué de la composition ci-dessus et d'un dispositif applicateur. L'invention concerne aussi des procédés d'application de la composition de blanchiment des dents sur les dents.

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