Bleaching device comprising a barrier layer and a bleaching composition comprising polyvinylpyrrolidone
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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Accused Products
Abstract
A dental bleaching composition comprises a dental bleaching agent and a polyvinylpyrrolidone thickening agent. The bleaching composition may include water, flavoring agents, a basic substance and desensitizing agents, as desired. Polyvinylpyrrolidone avoids acid etching and chelation of teeth that were problematic in bleaches using carbomer as a thickener. A delivery system for delivering the bleaching composition comprises the aforementioned dental bleaching composition in combination with a moisture-resistant barrier layer such as a dental tray or a flexible strip of material.
33 Citations
40 Claims
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1. A delivery system for delivering a dental bleaching composition to teeth, comprising:
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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. - View Dependent Claims (4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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2. A delivery system for delivering a dental bleaching composition to teeth, comprising:
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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 having a molecular weight in a range of 1,000,000 to 1,500,000;
- View Dependent Claims (8)
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3. A delivery system for delivering a dental bleaching composition to teeth, comprising:
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a water-resistant barrier layer; and
a dental bleaching composition adjacent to said barrier layer, said bleaching composition comprising;
a dental bleaching agent; and
at least one thickening agent in an amount of at least about 25% by weight of the dental bleaching composition, the thickening agent comprising polyvinylpyrrolidone.
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30. A dental bleaching strip for delivering a dental bleaching composition to teeth, comprising:
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a water-resistant flexible strip of material; and
a one-part dental bleaching composition adjacent to said flexible strip, said bleaching composition comprising;
a peroxide bleaching agent;
water in an amount of at least 0.1% by weight of the dental bleaching composition; and
polyvinylpyrrolidone as primary or sole thickening agent. - View Dependent Claims (31, 32, 33)
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34. A dental bleaching strip for delivering a dental bleaching composition to teeth, comprising:
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a water-resistant flexible strip of material; and
a dental bleaching composition adjacent to said flexible strip, said bleaching composition comprising;
a peroxide bleaching agent; and
at least one thickening agent in an amount of at least about 25% by weight of the dental bleaching composition, the thickening agent comprising polyvinylpyrrolidone. - View Dependent Claims (35, 36, 37, 38)
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39. A dental bleaching strip for delivering a dental bleaching composition to teeth, comprising:
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a water-resistant flexible strip of material; and
a one-part dental bleaching composition adjacent to said flexible strip, said bleaching composition comprising;
a peroxide bleaching agent;
water; and
at least one thickening agent comprising polyvinylpyrrolidone, said dental bleaching composition adhesively attaching said flexible strip of material to a person'"'"'s teeth without substantial slippage when the dental bleaching strip is in use. - View Dependent Claims (40)
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Specification