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Accelerated method and instrumentation for whitening teeth

a technology of teeth whitening and accelerated method, which is applied in the field of teeth whitening, can solve the problems of inability to remove extrinsic stains, inability to leave all internal pigmentation unchanged, and inability to achieve whitening effects that are extremely limited

Inactive Publication Date: 2007-04-05
MCLAUGHLIN GERALD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] In one embodiment, the invention provides a composition whitening teeth, using an effective amount of a bleaching compound and a catalytic activator, where the catalytic activator catalyzes the reaction of a significant portion of the bleaching compound within ten minutes.

Problems solved by technology

While rapidly effective, these techniques have the disadvantage of only being able to remove extrinsic stains, leaving all internal pigmentation unchanged.
Thus the whitening effect is extremely limited.
While effective on both extrinsic and intrinsic discolorations, one major problem encountered with this second approach is the enormous amount of treatment time needed to gain adequate penetration of the tooth structure by the whitening agent.
The length of these treatments can be discouraging and increases the cost.

Method used

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  • Accelerated method and instrumentation for whitening teeth

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] Stained extracted teeth were sectioned into two equal pieces. Each of the pieces was submerged into a peroxide solution or gel. One piece of each tooth was submerged in peroxide alone, while the other was submerged in hydrogen peroxide with a catalyst, a hydrogen peroxide containing a modifier to raise the pH (either AMP or tris-Amino), or hydrogen peroxide containing both the catalyst and the modifier. Three solutions were tested: (1) 3% hydrogen peroxide, (2) 6% hydrogen peroxide, and (3) 10% hydrogen peroxide. Two gels were tested: (1) a commercially available dentist-supervised bleaching gel containing hydrogen peroxide up to 7%, and (2) a commercially available dentist-supervised bleaching gel containing carbamide peroxide up to 20%. Two catalysts were used in the experiments, either a standard activated charcoal or Centaur (Calgon) activated charcoal. Samples were photographed after three minutes of exposure, and at several other time points.

[0035] When a catalyst was ...

example 2

[0036] A catalytic agent was applied to a toothbrush by dipping a wet toothbrush into powdered catalytic agent, or by bonding activated charcoal to a toothbrush head between the bristles. A whitening gel (Natural White) containing 1.5% hydrogen peroxide was applied to the toothbrush and the brush was used to clean a subject's teeth. A whitening effect was noted after one application of three minutes in duration. One subject repeated the application of the whitening gel in the presence of the catalytic agent twice a day for three days. Significant whitening was noted following three days of application.

example 3

[0037] Liquid 3% hydrogen peroxide was mixed with a few drops a mint flavor. A small amount of activated charcoal catalytic agent was placed into a cup, and one-half teaspoon of the peroxide was added. This solution was used to bathe the teeth of subjects for sessions of three minutes of duration, carried out for twice a day over a period of several days. Visible whitening was noted after two days.

[0038] It is to be understood that this invention is not limited to the particular methodology, and that protocols, apparatus, models and reagents described as such may, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention which will be limited only by the appended claims.

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Abstract

The invention provides a composition whitening teeth, using a bleaching compound and a catalytic activator, where the catalytic activator catalyzes the reaction of a significant portion of the bleaching compound within in a short period of time. A method for whitening teeth by providing a bleaching compound, providing a catalytic agent, and combining the bleaching agent with the catalytic agent so that a reaction of a significant portion of the bleaching agent occurs in a short period of time is also disclosed. A device for whitening teeth, consisting of a toothbrush where at least one of the bristles contains a catalytic activator is also provided. The handle of this device has a reservoir for a bleaching compound and a means for dispensing the bleaching compound. Another device for whitening teeth, consisting of a toothbrush with a catalytic activator capable of catalyzing the reaction of a bleaching compound applied to the head of the device, is further provided.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application claims priority from U.S. Provisional Application Ser. No. 60 / 048,423, filed Jun. 3, 1997.FIELD OF THE INVENTION [0002] The present invention relates to the field of dentistry, and specifically to the whitening of the teeth. BACKGROUND OF THE INVENTION [0003] Teeth generally become more darkly pigmented with age and exposure to such materials as tea and coffee, and it has long been a goal of dentistry to provide a means to safely and effectively reverse this darkening process. Historically there are two approaches to the problem. The first involves removing pigmentation that has adhered onto the surface of the teeth. This is commonly achieved through the use of abrasives, sometimes augmented with solvents. While rapidly effective, these techniques have the disadvantage of only being able to remove extrinsic stains, leaving all internal pigmentation unchanged. Thus the whitening effect is extremely limited. [0004] A more ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K8/22A46B11/00A46B15/00A46B11/04A46D9/04A61K8/00A61K8/18A61K8/19A61K8/21A61K8/40A61K8/97A61Q11/00
CPCA46B11/0003A61K8/19A61K8/22A61Q11/00A46B11/0006A46B11/0068
Inventor MCLAUGHLIN, GERALD
Owner MCLAUGHLIN GERALD
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