Drug – bio-affecting and body treating compositions – Dentifrices
Patent
1990-10-10
1992-06-16
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Dentifrices
424 52, 424 53, 424 81, 2521863, A61K 716
Patent
active
051223651
DESCRIPTION:
BRIEF SUMMARY
This invention relates in general to teeth whitening dentrifices and more particularly to a new system containing a plurality of substances used in combination that is useful for whitening and polishing human teeth.
For a variety of reasons it has become desirable for a person's teeth to appear bright or "white". Society places a high value on the "whiteness" of one's teeth. One whose teeth are white may enjoy more personal confidence and satisfaction and may even enjoy greater social acceptance. In many business situations, such as acting and television newsreporting, a person's appearance is of the utmost importance in securing employment and having "white" teeth is known to be an asset.
A tooth is comprised of an inner dentin layer and an outer hard enamel layer that is the protective layer of the tooth. The enamel layer of a tooth is naturally an opaque white or slightly off-white color. It is this enamel layer that can become stained or discolored. The enamel layer of a tooth is composed of hydroxyapatite mineral crystals that create a somewhat porous surface. These hydroxyapatite crystals form microscopic hexagonal rods or prisms that make up the enamel surface. As a result, the surface of the enamel layer presents microscopic spaces or pores between the prisms. It is believed that this porous nature of the enamel layer is that allows staining agents and discoloring substances to permeate the enamel and discolor the tooth. These remaining substances can occupy the microscopic spaces and eventually alter the color of the tooth.
Many substances that a person confronts or comes in contact with on a daily basis can "stain" or reduce the "whiteness" of one's teeth. In particular, the foods, tobacco products and fluids that one consumes tend to stain one's teeth. These products or substances tend to accumulate on the enamel layer of the tooth and form a pellicle film over the teeth. These staining and discoloring substances can then permeate the enamel layer. This problem occurs gradually over many years, but imparts a noticeable discoloration of the enamel of one's teeth. Some diseases and environmental factors may also have the effect of discoloring one's teeth. So long as the discolored teeth are still healthy and do not pose any health risk or problem, a product or substance that would whiten the discolored teeth would be advantageous.
It is also essential that a teeth whitening product that is to be used at home or in private by the consumer be safe and easy to use. A product for home use cannot utilize some of the compositions or products for whitening teeth that are available for use by a trained dental professional. For example, a 35% hydrogen peroxide bleaching agent is utilized by many dental practitioners to bleach severely discolored teeth. Such a concentrated solution of hydrogen peroxide would be irritating and potentially dangerous for home use by the consumer. Products and substances that are presently available to whiten teeth include a variety of different ingredients, but the primary active ingredient is an abrasive agent formulated into a gel or paste. These abrasive gel type products "polish" the enamel layer of the teeth to which it is applied and give it a more lustrous sheen and partially scrub away materials that stain the tooth enamel. These abrasive products are not able to perform all of the desired functions in a fully satisfactory manner.
It is therefore a primary object of the present invention to provide a system for whitening teeth that is more effective in whitening teeth and safer to use than existing products available to the consumer.
It is another object of the present invention to provide a system for whitening teeth that includes a cleansing mouth rinse, a bleaching substance and a pigmenting agent as well as an abrading and polishing agent to more completely and more efficiently whiten teeth than known products.
It is still another objects of the present invention to provide a complete system for whitening the enamel of human teeth that is safe for home use and a me
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Benston, Jr. William E.
Natural White, Inc.
Page Thurman K.
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