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Compositions for removing stains from dental surfaces, and methods of making and using the same

a technology for dental surfaces and compositions, applied in the field of stain removal compositions, can solve the problems of inability to clean teeth mechanically, intrinsic tooth staining discoloration or stained from chromogenic, and difficulty in addressing intrinsic tooth staining, etc., to achieve synergistic stain removal or tooth whitening effect, improve stain removal efficacy, and reduce the effective amount of each component incorporated

Inactive Publication Date: 2011-06-23
INTERCONTINENTAL GREAT BRANDS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]The present invention is generally directed to a composition for removing stains from dental surfaces in which a combination of stain removing agents have been incorporated therein so that an effective amount is available to produce an improved, synergistic stain removing or tooth whitening effect. The composition of the present invention includes a novel combination of stain removing agents that exhibits improved stain removing efficacy as compared to the use of individual stain removing agents alone, thereby enabling reduction in the effective amounts of each component incorporated. In addition, the compositions of the present invention are compatible for use in solid oral formulations including chewing gum and confectioneries, while effectively maintaining desirable organoleptic and taste properties.

Problems solved by technology

Unfortunately, in the absence of thorough dental cleaning, teeth can become discolored or stained from chromogenic (color-causing) substances present in food, beverages, tobacco, and the like, and internal sources such as blood, amalgam-based fillings, and antibiotics (e.g., tetracycline).
Discoloration from intrinsic staining is not readily amenable to mechanical methods of tooth cleaning.
Accordingly, intrinsic tooth staining is generally more intractable and difficult to address than extrinsic tooth staining.
Treatments using oxidizing agents typically require significant time to achieve good results depending on the peroxide source and its concentration.
However, such components have a few drawbacks.
For example, excess amounts of surfactants can produce an undesirable soapy taste in the composition.
Chelators also provide good stain removal activity, however, if added in excess amounts, can also negatively affect the taste (e.g., salty, bitter, and metallic) of the composition.
Accordingly, although chelators and surfactants are good stain removing agents, the amounts that can be added to the composition are limited to avoid or minimize the problems discussed above.

Method used

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  • Compositions for removing stains from dental surfaces, and methods of making and using the same
  • Compositions for removing stains from dental surfaces, and methods of making and using the same
  • Compositions for removing stains from dental surfaces, and methods of making and using the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

Experimental Results from a Stain Removal Study

Materials and Methods

[0074]A flow system was prepared to treat hydroxyapatite (HAP) disks for staining. Tea, coffee and porcine gastric mucin solution was mixed to yield a staining broth. The staining broth was circulated through the flow system in contact with the HAP disks at a rate of 15 ml per minute for about 96 hours at 37° C. The resulting stained HAP disks were rinsed in a solution of artificial saliva at a pH of about 7 and allowed to dry for about 2 hours at room temperature.

[0075]Once the HAP disks were dry, a baseline stain reading was determined for each HAP disk by measuring its diffuse reflectance absorbance value using a Minolta spectrometer. The measurement was made over the entire visible color spectrum in accordance with the Commission International de L'Eclairage Laboratory (CIELAB) color scale. The CIELAB color scale quantifies color according to 3 parameters: lightness-darkness scale (L), red-green chroma (RGC), an...

example 2

In-Vitro Stain Removal Study

Materials and Methods

[0079]Several hydroxyapatite disks were prepared and pretreated to form on the surface of the disks a biofilm that was discolored with a vegetable stain. The color intensity of each disk was then determined utilizing a Chrom-A-Meter. The disks were suspended in either water or a test solution containing a solution selected from 1) 0.05% sodium stearate; 2) 0.3% sodium tripolyphosphate, 3) 0.3% carbamide peroxide; 4) 0.3% carbamide peroxide and 0.05% sodium stearate; and 5) 0.3% carbamide peroxide and 0.3% sodium tripolyphosphate, respectively. Water acts as a control to take into account the differences in the disk composition and the variation in the stain thickness between batches. The disks were treated for two ten (10) minute intervals, and characterized by the Chrom-A-Meter after each treatment interval. The change in color is expressed by ΔE values relative to the water treatment alone. The percent stain reduction is then calcul...

example 3

In-Vitro Stain Removal Study

Materials and Methods

[0085]Five coated gum samples were tested in a stain removal test model each an active compositions selected from 1) 0.5% sodium stearate in a core portion; 2) 0.5% sodium stearate in a coating portion and 3% carbamide peroxide in a core portion; 3) 0.5% sodium stearate in a coating portion and 1% sodium tripolyphosphate in a core portion; 4) 0.5% sodium stearate in a coating portion and 3% sodium tripolyphosphate / carbamide peroxide in a core portion; and 5) 0.5% sodium stearate in a coating portion and 1% sodium tripolyphosphate / carbamide peroxide in a core portion. The gum samples were masticated by a chewing machine, which was outfitted with stained bovine teeth providing chewing surfaces to simulate the top and bottom teeth in a human mouth. The samples were chewed for five minutes. The bovine teeth were checked with a Chrom-A-Meter before they were outfitted into the machine, and checked again after simulated chewing over a one w...

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Abstract

A composition for removing stains from dental surfaces comprising a stain removing effective amount of at least two active components selected from a peroxide compound, a polyphosphate, and an anionic surfactant, in combination with an orally acceptable carrier. The present invention is further directed to methods of making and using the same.

Description

FIELD OF THE INVENTION[0001]The present invention is related generally to stain removing compositions for promoting dental hygiene, more particularly to dental stain removing compositions containing a novel combination of removing agents and methods of making and using such compositions.BACKGROUND OF THE INVENTION[0002]Unblemished white teeth have long been considered cosmetically desirable. Unfortunately, in the absence of thorough dental cleaning, teeth can become discolored or stained from chromogenic (color-causing) substances present in food, beverages, tobacco, and the like, and internal sources such as blood, amalgam-based fillings, and antibiotics (e.g., tetracycline). The tooth structures that are generally responsible for presenting a stained appearance are enamel, dentin, and the acquired pellicle. Tooth enamel is predominantly formed from inorganic material, mostly in the form of hydroxyapatite crystals, and further contains approximately 5% organic material primarily in...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K8/22A61K8/02A61K8/11A61Q11/00A23G3/00A61K8/97A23G3/36A23G4/00A23G4/06A61K8/23A61K8/24A61K8/42A61Q11/02
CPCA23G3/36A23G3/362A23G4/06A23G4/064A61Q11/00A61K8/22A61K8/24A61K8/42A61K8/0216
Inventor HOLME, SAMANTHA K.LUO, SHIUH JOHN
Owner INTERCONTINENTAL GREAT BRANDS LLC
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