Bleaching device comprising a barrier layer and a bleaching composition comprising polyvinylpyrrolidone
DCFirst Claim
1. A delivery system for delivering a dental bleaching composition to teeth while reducing calcium removal from tooth enamel when the dental bleaching composition contacts tooth enamel, comprising:
- a water-resistant barrier layer; and
a dental bleaching composition adjacent to said barrier layer, said bleaching composition being adapted for adhering the water-resistant barrier layer to a person'"'"'s teeth during dental bleaching and comprising;
a dental bleaching agent; and
polyvinylpyrrolidone as primary or sole thickening agent such that the thickening agent promotes adhesion of the dental bleaching composition to tooth enamel without the thickening agent removing calcium from tooth enamel by chelation.
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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.
123 Citations
39 Claims
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1. A delivery system for delivering a dental bleaching composition to teeth while reducing calcium removal from tooth enamel when the dental bleaching composition contacts tooth enamel, comprising:
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a water-resistant barrier layer; and a dental bleaching composition adjacent to said barrier layer, said bleaching composition being adapted for adhering the water-resistant barrier layer to a person'"'"'s teeth during dental bleaching and comprising; a dental bleaching agent; and polyvinylpyrrolidone as primary or sole thickening agent such that the thickening agent promotes adhesion of the dental bleaching composition to tooth enamel without the thickening agent removing calcium from tooth enamel by chelation. - 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 while reducing calcium removal from tooth enamel when the dental bleaching composition contacts tooth enamel, comprising:
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a water-resistant barrier layer; and a dental bleaching composition adjacent to said barrier layer, said bleaching composition being adapted for adhering the water-resistant barrier layer to a person'"'"'s teeth during dental bleaching and comprising; a dental bleaching agent; and polyvinylpyrrolidone having a molecular weight in a range of 1,000,000 to 1,500,000, wherein the polyvinylpyrrolidone promotes adhesion of the dental bleaching composition to tooth enamel without the polyvinlypyrrolidone removing calcium from tooth enamel by chelation. - View Dependent Claims (8)
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3. A delivery system for delivering a dental bleaching composition to teeth while reducing calcium removal from tooth enamel when the denial bleaching composition contacts tooth enamel, comprising:
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a water-resistant barrier layer; and a dental bleaching composition adjacent to said barrier layer, said bleaching composition being adapted for adhering the water-resistant barrier layer to a person'"'"'s teeth during dental bleaching and comprising; a dental bleaching agent; and at least one thickening agent comprising polyvinylpyrrolidone in an amount of at least about 25% by weight of the dental bleaching composition, wherein the thickening agent promotes adhesion of the dental bleaching composition to tooth enamel without the thickening agent removing calcium from tooth enamel by chelation.
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30. A dental bleaching strip for delivering a dental bleaching composition to teeth while reducing calcium removal from tooth enamel when the dental bleaching composition contacts tooth enamel, 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 composition being adapted for adhering the water-resistant barrier layer to a person'"'"'s teeth during dental bleaching and 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 such that the thickening agent promotes adhesion of the dental bleaching composition to tooth enamel without the thickening agent removing calcium from tooth enamel by chelation. - View Dependent Claims (31, 32, 33)
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34. A dental bleaching strip for delivering a dental bleaching composition to teeth while reducing calcium removal from tooth enamel when the denial bleaching composition contacts tooth enamel, 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 being adapted for adhering the water-resistant barrier layer to a person'"'"'s teeth during dental bleaching and comprising; a peroxide bleaching agent; and at least one thickening agent comprising polyvinylpyrrolidone in an amount of at least about 25% by weight of the dental bleaching composition, wherein the polyvinylpyrrolidone adhesion of the dental bleaching composition to tooth enamel without the thickening agent removing calcium from tooth enamel by chelation. - View Dependent Claims (35, 36, 37)
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38. A dental bleaching strip for delivering a dental bleaching composition to teeth while reducing calcium removal from tooth enamel when the dental bleaching composition contacts tooth enamel, 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 adapted for reliably adhering the water-resistant flexible strip to a person'"'"'s teeth during dental bleaching and comprising; a peroxide bleaching agent; water; and a polyvinylpyrrolidone having a molecular weight in a range of 1,000,000 to 1,500,000, wherein the polyvinylpyrrolidone promotes adhesion of the dental bleaching composition to tooth enamel without the polyvinylpyrrolidone removing calcium from tooth enamel by chelation, 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 (39)
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Specification