Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/20—Halogens; Compounds thereof
  • A61K8/21—Fluorides; Derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/24—Phosphorous; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses

Definitions

• compositions containing an alkali 'metal monofluorophosphate as a source of fluorine and dicalcium orthophosphate as the abrasive are surprisingly compatible.
• the present invention is surprising in view of the fact that with practically all other sources of fluorine, dicalcium orthophosphate is one of the least compatible of all known dentifrice abrasives.
• the dicalcium orthophosphate abrasive can be present in the dentifrice compositions of the present invention in either the anhydrous or dihydrate form, it is generally preferred that the dicalcium orthophosphate portion of the dentifrice composition of this invention be largely (i.e., at least about 50 Weight percent) the dihydrate (CaHPO -2H O). Still further preferred are those compositions wherein practically all of the dicalcium orthophosphate is present in the form of the dihydrate.
• the level of the dicalcium orthophosphate in accordance with the present invention, generally can be varied from about 20 to about 60 weight percent of the final toothpaste composition.
• the level of the dicalcium orthophosphate in such toothpaste should be between about 35 and about 50 Weight percent of the toothpaste composition.
• dicalcium orthophosphates for example often up to about 95 weight percent or more, can be utilized, based on the total weight of the final tooth powder composition.
• the dicalcium orthophosphate need not be the only abrasive material in the dentifrice composition of the present invention. Generally, however, it is preferred that dicalcium orthophosphate, in the form of the dihydrate and/ or the anhydrous material, represent at least about half of all of the abrasive materials in the dentifrice compositions of the present invention.
• alkali metal monofluorophosphate preferably sodium monofluorophosphate
• the relative non-toxicity of the monofluorophosphate as compared with simple fluoride salts such as sodium fluoride
• the usual practice of those using dentifrice compositions of the same general type as the compositions of the present invention to clean their teeth (and simultaneously protect their teeth by reducing the incidence of dental caries) generally between about 0.5 and about 2 (and preferably from about 0.7 to about 0.8) weight percent of the alkali metal monofluorophosphate be present in the detifrice compositions of the present invention.
• Toothpastes generally contain, in addition to the abrasive and the fluorine. source, a sweetener such as saccharin; a humectant such as sorbitol and/ or glycerin; a binding agent such as gum tragacanth, Irish moss extract, carboxymethylcellulose, and the very high molecular weight polyethylene oxides; a sudsing agent such as sodium lauryl sulfate or sodium lauryl sarcosinate; and a flavoring agent.
• a sweetener such as saccharin
• a humectant such as sorbitol and/ or glycerin
• a binding agent such as gum tragacanth, Irish moss extract, carboxymethylcellulose, and the very high molecular weight polyethylene oxides
• a sudsing agent such as sodium lauryl sulfate or sodium lauryl sarcosinate
• a flavoring agent such as sodium lauryl sulfate or
• a powder phase is prepared by intermixing 483 parts of the abrasive-monofluorophosphate composition prepared in accordance with the above-described procedure, 1 part of saccharin, and 16 parts of gum tragacanth. These powders are blended together for about 30 minutes. Then, to one third of the resulting blended powder phase in a conventional stainless steel sigma-blade mixer, 165 parts of a mixture containing equal amounts (by weight) of water and glycerin are added very slowly (over a period of about 30 minutes) while the resulting pasty mixture is being agitated. Subsequently, over an additional 30 minute period, the remaining two-thirds of the blended powder phase and 325 parts of the glycerine-water mixture are added to the pasty mixture.
• the resulting pasty mixture is then stirred in the sigma-blade mixer for an additional 30 minutes to assure product uniformity. During the last 10 minutes of this latter period of agitation, 1 part of a flavoring ingredient and 16 parts of sodium lauryl sulfate are mixed into the product.
• the resulting toothpaste product containing about 0.75 weight percent of sodium monofluorophosphate, is then inserted into conventional metal toothpaste tubes, which are subsequently sealed and stored at room temperature. Periodically one of the tubes is opened and analyzed to determine the amount of fluorine remaining in an available (unreacted with the other ingredients so as to remain soluble in the water when 10 parts of the paste are stirred into parts of distilled water at room temperature for about 1 hour) condition.
• a toothpaste formulation such as that prepared in accordance with the foregoing example is found to retain as much as 55 percent of its original available (water-soluble) fluorine.
• a similar toothpaste, prepared in the same manner, but using an equivalent amount (based on F) of stannous fluoride in place of the sodium monofluorophosphate retains, in available form, only about 25 percent of its original fluoride after 168 days of storage at room temperature.
• a formulation, prepared as in the foregoing example, containing calcium pyrophosphate in place of the dicalcium orthophosphate is found to retain only about 22 percent of its original available fluorine after 168 days of storage at room temperature.
• a toothpaste composition containing from about 20% to about 60%, by weight, of an abrasive material and from about 0.2% to about 2.0%, by weight, of sodium monofluorophosphate; said abrasive material consisting of dicalcium orthophosphate and being characterized by having a particle size small enough to pass through a No. 20 mesh U.S. Standard screen.
• a tooth powder composition containing from about 20% to about 95% by Weight of an abrasive material and from about 0.2% to about 2.0% by weight of sodium monofluorophosphate; said abrasive material consisting of dicalcium orthophosphate dihydrate and being characterized by having particles small enough to pass through a No. 200 mesh US Standard screen.
• a dentifrice composition containing from about 20% to about 95% by weight of an abrasive material and from about 0.2% to about 2.0% by weight of sodium monofluorophosphate; said abrasive material consisting of a dicalcium orthophosphate selected from the group consisting of dicalcium orthophosphate dihydrate, anhydrous dicalcium orthophosphate, and mixtures thereof, the particles of said dicalcium orthophosphate being small enough to pass through a No. 200 mesh US. Standard screen.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Cosmetics (AREA)

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Applications Claiming Priority (1)

Publications (1)

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Cited By (10)

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Citations (6)

• 1963
  • 1963-11-06 US US321689A patent/US3308029A/en not_active Expired - Lifetime
• 1964
  • 1964-11-04 NL NL6412842A patent/NL147034C/xx not_active IP Right Cessation
  • 1964-11-05 GB GB45072/64A patent/GB1089367A/en not_active Expired
  • 1964-11-05 DE DE1964M0063002 patent/DE1492027B2/de not_active Ceased
  • 1964-11-06 NO NO155469A patent/NO116438B/no unknown
  • 1964-11-06 SE SE13391/64A patent/SE339288B/xx unknown
  • 1964-11-06 LU LU47299D patent/LU47299A1/xx unknown
  • 1964-11-06 DK DK547464A patent/DK146954C/da not_active IP Right Cessation
  • 1964-11-06 BE BE655416D patent/BE655416A/xx unknown

Patent Citations (6)

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