Bleaching device comprising a barrier layer and a bleaching composition comprising polyvinylpyrrolidone

  • US 20040101496A1
  • Filed: 11/17/2003
  • Published: 05/27/2004
  • Est. Priority Date: 01/27/2001
  • Status: Active Grant
First Claim
Patent Images

1. A delivery system for delivering a dental bleaching composition to teeth, comprising:

  • a water-resistant barrier layer; and

    a dental bleaching composition adjacent to said barrier layer, said bleaching composition comprising;

    a dental bleaching agent; and

    polyvinylpyrrolidone as primary or sole thickening agent.

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