Patches for teeth whitening

  • US 6,780,401 B2
  • Filed: 05/27/2003
  • Issued: 08/24/2004
  • Est. Priority Date: 03/17/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A dry matrix patch for tooth whitening, comprising:

  • a peroxide tooth whitening agent; and

    a peroxide-compatible hydrophilic glass polymer as a base polymer, the patch being able, when applied to the teeth of a user, to provide adhesion to enamel and release the tooth whitening agent upon becoming hydrated;

    wherein the hydrophilic glass polymer is selected from the group consisting of polyalkylvinylether-maleic acid copolymer, polyvinyl alcohol, polyacrylic acid, Poloxamer 407, polyvinyl pyrrolidone-vinyl acetate copolymer, polyvinyl pyrrolidone, Polyquaterium-11, Polyquaterium-39, carbomer, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin, sodium alginate and mixtures thereof.

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