Patches for teeth whitening
First Claim
1. A dry type patch for tooth whitening, comprising a matrix type of an adhesive layer and a backing layer, wherein the adhesive layer contains a peroxide as a tooth whitening agent along with a stabilizer for the peroxide and a hydrophilic glass polymer as a base polymer, whereby the adhesive layer provides a strong adhesion to teeth while releasing the tooth whitening agent when hydrated on the enamel layers of teeth.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a dry type tooth whitening patch comprising peroxide as a tooth whitening agent. In particular, disclosed is a dry type tooth whitening patch in which a peroxide is contained, as a teeth whitening agent, in a matrix type adhesive layer. The adhesive layer includes, as a base polymer thereof, a hydrophilic glass polymer which provides a strong adhesion to teeth while releasing the tooth whitening agent when hydrated on the enamel layers of teeth in the moist oral cavity. The dry type patch according to the present invention is convenient in use, as compared to wet type patches. Further, it exhibits a superior adhesion while being maintained in a state attached to the teeth for a lengthened period of time so as to assure an enough contact time between the whitening agent in the patch and stains on the teeth, thereby giving a sufficient whitening effect.
151 Citations
14 Claims
- 1. A dry type patch for tooth whitening, comprising a matrix type of an adhesive layer and a backing layer, wherein the adhesive layer contains a peroxide as a tooth whitening agent along with a stabilizer for the peroxide and a hydrophilic glass polymer as a base polymer, whereby the adhesive layer provides a strong adhesion to teeth while releasing the tooth whitening agent when hydrated on the enamel layers of teeth.
-
9. A dry type patch for tooth whitening comprising a matrix type of an adhesive layer and a backing layer, wherein the adhesive layer contains a peroxide as a tooth whitening agent and a hydrophilic glass polymer as a base polymer, the hydrophilic glass polymer is one or more selected from a group consisting of polyvinyl pyrrolidone-vinyl acetate copolymer (Luviskol VA, Plasdone S PVP/VA), poly vinyl pyrrolidone (PVP, K-30-K-120), Polyquaterium-11 (Gafquat 755N), Polyquaterium-39 (Merquat plus 3330) which has a good compatibility with the peroxide, by adjusting the ratio of water to ethanol to be 9:
- 1 to 0;
10, a stability for peroxide with time is obtained without addition of a stabilizer for peroxide and the adhesive layer provides a strong adhesion to teeth while releasing the tooth whitening agent when hydrated on the enamel layers of teeth. - View Dependent Claims (10, 11, 12, 13, 14)
- 1 to 0;
Specification