WO2018043717A1 - 口腔用組成物 - Google Patents
口腔用組成物 Download PDFInfo
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- WO2018043717A1 WO2018043717A1 PCT/JP2017/031641 JP2017031641W WO2018043717A1 WO 2018043717 A1 WO2018043717 A1 WO 2018043717A1 JP 2017031641 W JP2017031641 W JP 2017031641W WO 2018043717 A1 WO2018043717 A1 WO 2018043717A1
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- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4906—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom
- A61K8/4913—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom having five membered rings, e.g. pyrrolidone carboxylic acid
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- 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
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- 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
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- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
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- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
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- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
-
- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/55—Phosphorus compounds
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- 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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/60—Sugars; Derivatives thereof
- A61K8/602—Glycosides, e.g. rutin
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/28—Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants
Definitions
- the present invention relates to an oral composition.
- root surface dentin has been colored due to retraction and exposure.
- root surfaces such as root surface dentin are colored due to various causes.
- One of the causes is Maillard reaction caused by non-enzymatic reaction between protein and saccharide derived from pellicle or saliva in the mouth.
- Patent Document 1 discloses an oral composition that may contain a water-soluble polyphosphate for the purpose of removing dirt on the tooth surface and tongue surface.
- the water-soluble polyphosphate is blended for the purpose of further enhancing the chemical cleaning effect exhibited by phenoxyethanol, phenoxypropanol and / or phenoxyisopropanol.
- Patent Document 2 discloses an oral composition containing pyrrolidonecarboxylic acid and / or a salt thereof for the purpose of improving the wetting effect and its sustainability.
- Patent Document 3 discloses an oral composition containing pyrrolidonecarboxylic acid and / or a salt thereof for the purpose of imparting warmth without giving irritation to the oral cavity.
- Patent Document 4 discloses an oral composition containing pyrrolidone carboxylic acid and / or a salt thereof for the purpose of being excellent in preparation stability and exhibiting a high anti-inflammatory inhibitory effect.
- Patent Document 5 discloses an oral composition containing pyrrolidonecarboxylic acid and / or a salt thereof for the purpose of excellent usability and exhibiting an effect of suppressing plaque adhesion. None of the documents disclose that pyrrolidonecarboxylic acid and / or a salt thereof exhibit an effect of preventing coloring.
- the binding of tooth coloring substances derived from the Maillard reaction is remarkably stronger in dentin composed of an inorganic complex and an organic complex such as collagen than the enamel composed of almost inorganic.
- the tooth coloring cause substance that causes the Maillard reaction penetrates into the dentin tissue and causes coloring. Therefore, the conventional coloring suppression technique for enamel does not provide a sufficient coloring suppression effect for dentin.
- Patent Document 6 proposes a technique for suppressing coloring of polyphenol (medicinal component) on the root dentin surface with pyrrolidone carboxylic acid.
- An object of the present invention is to provide a composition for oral cavity that is excellent in coloring suppression effect on the surface and subsurface of dentin.
- the present inventors provide the following [1] to [11].
- a component at least one of pyrrolidone carboxylic acid and inorganic base salt thereof
- B component at least one of water-soluble pyrophosphoric acid and salt thereof.
- composition for oral cavity according to any one of the above [1] to [3], wherein the mass ratio (A / B) of the component (A) to the component (B) is 0.1 to 300.
- Component (C) The oral composition according to any one of the above [1] to [4], further containing a fluorine compound.
- Component (D) The oral composition according to any one of [1] to [6] above, further containing at least one sugar alcohol selected from the group consisting of xylitol, reduced palatinose, and erythritol.
- composition for oral cavity which is excellent in the effect of suppressing the coloring of the dentin surface and subsurface.
- Oral Composition of the Present Invention The present inventors have intensively studied to obtain an oral composition superior in dentin surface and subsurface coloring suppression effect as compared to conventional oral compositions. Repeated. As a result, an oral composition comprising at least one of pyrrolidonecarboxylic acid and an inorganic base salt thereof and at least one of water-soluble pyrophosphoric acid and a salt thereof, in addition to suppressing the strong dentin surface coloring, ivory It has been found that coloring under the surface layer can also be suppressed.
- Sodium pyrophosphate is known as a stain removal component (Japanese Patent Laid-Open No. 10-182389).
- Japanese Patent Laid-Open No. 10-182389 Japanese Patent Laid-Open No. 10-182389.
- the effect of sodium pyrophosphate only describes the effect on the dirt that adheres to and deposits on the tooth surface, and does not describe that the inhibitory effect can be obtained on coloring under the surface of the dentin.
- composition for oral cavity of the present invention contains (A) component: at least one of pyrrolidone carboxylic acid and inorganic base salt thereof, and (B) component: at least one of water-soluble pyrophosphoric acid and salt thereof. To do.
- the component (A) contained in the oral composition of the present invention is at least one of pyrrolidone carboxylic acid and an inorganic base salt thereof.
- Pyrrolidone carboxylic acid is produced by dehydrating glutamic acid extracted from seaweed, wheat flour, and sugarcane, and has a structure represented by the following formula (1).
- the manufacturing method of pyrrolidonecarboxylic acid or its inorganic base salt is not particularly limited.
- a production method for example, glutamic acid extracted from organisms such as seaweed and sugar cane, or processed products such as wheat flour is dehydrated to obtain pyrrolidonecarboxylic acid, and metal ions (for example, sodium ions) are bound thereto.
- metal ions for example, sodium ions
- Examples of the inorganic base salt of pyrrolidone carboxylic acid include monovalent to trivalent inorganic base salts of pyrrolidone carboxylic acid.
- the monovalent to trivalent inorganic base salt include a monovalent to trivalent metal salt.
- Examples of the monovalent to trivalent metal salt include alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as calcium salt and magnesium salt; copper salt, zinc salt and aluminum salt.
- alkali metal salts such as sodium salt and potassium salt
- alkaline earth metal salts such as calcium salt and magnesium salt
- copper salt, zinc salt and aluminum salt examples of the monovalent to trivalent metal salt.
- sodium salt, potassium salt, calcium salt, magnesium salt, and aluminum salt are preferable, and sodium salt and potassium salt are more preferable.
- pyrrolidonecarboxylic acid and its inorganic base salt Commercially available products may be used for pyrrolidonecarboxylic acid and its inorganic base salt.
- a commercially available product of pyrrolidone carboxylic acid “AJIDEW A-100 (registered trademark)” manufactured by Ajinomoto Healthy Supply Co., Ltd. can be mentioned.
- AJIDEW-N-50 registered trademark
- a component may be used individually by 1 type and may use 2 or more types together.
- the content of the component (A) in the oral composition of the present invention is preferably 0.1% by mass or more, and more preferably 0.3% by mass or more with respect to the entire oral composition. . Thereby, the coloring suppression effect of the dentin surface and subsurface layer can fully be acquired.
- the upper limit of the content of the component (A) is not particularly limited, but is preferably 10% by mass or less, and more preferably 5% by mass or less with respect to the entire oral composition. Thereby, pyrrolidone carboxylic acid or a salt thereof can be dissolved to sufficiently obtain a dentin surface and subsurface coloration suppressing effect, and the stability of the preparation can be maintained.
- the content of the component (A) in the oral composition of the present invention is preferably 0.1 to 10% by mass, and preferably 0.3 to 5% by mass with respect to the entire oral composition. More preferred.
- the lower limit of content of a component is not specifically limited, When it is less than 0.1 mass%, there is a possibility that the coloring suppression effect on the dentin surface and under the surface layer cannot be sufficiently obtained. is there.
- the upper limit of content of (A) component is not specifically limited, However, When it exceeds 10 mass%, the coloring inhibitory effect on the dentin surface may be inferior.
- the content of each component contained in the oral composition is a value based on the charged amount of each component when preparing the composition.
- ⁇ (B) component> (B) component contained in the composition for oral cavity of this invention is at least any one of water-soluble pyrophosphoric acid and its salt.
- the water-soluble pyrophosphate is represented by the chemical formula M 4 ⁇ P 2 O 7 (wherein M is a hydrogen ion or an alkali metal ion such as sodium or potassium), and is a compound obtained by dehydration condensation of phosphoric acid. It is.
- pyrophosphoric acid As at least one of water-soluble pyrophosphoric acid and its salt, pyrophosphoric acid; alkali metal salts of pyrophosphoric acid such as tetrasodium pyrophosphate, disodium dihydrogen pyrophosphate, disodium dipotassium pyrophosphate, tetrapotassium pyrophosphate, etc. is there.
- Preferable specific examples include pyrophosphoric acid, sodium pyrophosphate, potassium pyrophosphate, and disodium dihydrogen pyrophosphate. As these compounds, commercially available products manufactured by Taihei Chemical Sangyo Co., Ltd. may be used.
- a component may be used individually by 1 type and may use 2 or more types together.
- the content of the component (B) in the oral composition of the present invention is preferably 0.01% by mass or more and more preferably 0.1% by mass or more with respect to the entire oral composition. . Thereby, the coloring suppression effect on the dentin surface can be sufficiently obtained.
- the upper limit of content of (B) component is not specifically limited, It is preferable that it is 5 mass% or less with respect to the whole composition for oral cavity, and it is more preferable that it is 3 mass% or less. Thereby, the coloring suppression effect under dentin surface layer can fully be acquired.
- the content of the component (B) in the oral composition of the present invention is preferably 0.01 to 5% by mass, and preferably 0.1 to 3% by mass with respect to the entire oral composition. More preferred.
- the lower limit of content of (B) component is not specifically limited, When it is less than 0.01 mass%, the coloring suppression effect on the dentin surface may not be fully obtained.
- the upper limit of content of (B) component is not specifically limited, However, When it exceeds 5 mass%, the coloring suppression effect under dentin surface layer may be inferior.
- the lower limit of the mass ratio ((A) / (B)) between the component (A) and the component (B) is preferably 0.1 or more, and more preferably 0.3 or more. Thereby, the coloring suppression effect of the dentin surface and subsurface layer can fully be acquired.
- the upper limit of the mass ratio ((A) / (B)) between the component (A) and the component (B) is preferably 300 or less, more preferably 50 or less, and 30 or less. Is more preferable. Thereby, the coloring suppression effect on the dentin surface can be sufficiently obtained.
- the mass ratio of the component (A) to the component (B) ((A) / (B)) is preferably 0.1 to 300, more preferably 0.1 to 50, and 0.3 to More preferably, it is 30.
- the mass ratio is less than 0.1, the effect of suppressing coloring of the dentin surface and the surface layer may be inferior.
- the mass ratio is more than 300, the dentin surface coloring suppression effect may be inferior.
- component at least one of pyrrolidone carboxylic acid and inorganic base salt thereof
- component at least one of water-soluble pyrophosphoric acid and salt thereof
- Component C a fluorine compound
- ⁇ (C) component Specific examples of the fluorine compound include sodium fluoride, potassium fluoride, ammonium fluoride, tin fluoride, amine fluoride, sodium monofluorophosphate, potassium monofluorophosphate, sodium silicon fluoride, and calcium calcium fluoride. be able to. Among these, sodium fluoride and sodium monofluorophosphate are particularly preferable.
- Fluorine compound may be a commercially available product.
- sodium fluoride “sodium fluoride” sold by Stella Chemifa Corporation can be mentioned.
- sodium monofluorophosphate “sodium monofluorophosphate” marketed by Rhodia Nikka Co., Ltd. can be mentioned.
- (C) component may be used individually by 1 type of fluorine compounds, and may use 2 or more types of fluorine compounds together.
- Fluorine in the component (C) is responsible for the effect of the component (C) blended in the oral composition of the present invention. Therefore, it is more useful to specify the content of the component (C) in terms of the fluorine content in the oral composition. Therefore, in the following description, the content of the component (C) is shown as a substitute for the fluorine content in the oral composition.
- blended with the composition for oral cavity of this invention is 0.01 mass% (100 ppm) or more as a fluorine content rate with respect to the whole composition for oral cavity, 0.02 mass% ( 200 ppm) or more is more preferable. Thereby, the coloring suppression effect under dentin surface layer can fully be acquired.
- the upper limit of content of a component is not restrict
- the content of the component (C) to be blended in the oral composition of the present invention is preferably 0.01 to 0.5% by mass (100 to 5000 ppm) as the fluorine content with respect to the whole oral composition. More preferably, the content is 0.02 to 0.4% by mass (200 to 4000 ppm).
- the fluorine content is less than 0.01% by mass (100 ppm)
- the coloring suppression effect under the dentin surface layer may not be sufficiently improved.
- it exceeds 0.5 mass% (5000 ppm) the stability of the fluorine compound in the preparation produced using the composition for oral cavity may be deteriorated. The improvement effect may not be sufficiently obtained.
- the lower limit of the mass ratio ((A) / (C)) between the component (A) and the component (C) is preferably 0.8 or more, more preferably 1 or more, and 8 or more. Is particularly preferred. Thereby, the coloring suppression improvement effect under dentin surface layer becomes remarkable.
- the upper limit value of the mass ratio ((A) / (C)) between the component (A) and the component (C) is preferably 250 or less, and more preferably 150 or less. Thereby, the coloring suppression improvement effect under dentin surface layer becomes remarkable.
- the mass ratio ((A) / (C)) between the component (A) and the component (C) is preferably 0.8 to 250, more preferably 1 to 250, and particularly preferably 8 to 150.
- composition for oral cavity of the present invention comprises (A) component: at least one of pyrrolidonecarboxylic acid and its salt, and (B) component: at least one of water-soluble pyrophosphoric acid and its salt, (D ) Component: at least one sugar alcohol selected from the group consisting of xylitol, reduced palatinose, and erythritol.
- composition for oral cavity in other embodiments may or may not contain the component (C).
- the composition for oral cavity in still another embodiment contains the component (C). It is preferable to contain. In this case, it can be said that the content regarding the component (C) is the same as the content described in the above ⁇ (C) component>.
- ⁇ (D) component The sugar alcohol used as the component (D) is xylitol, erythritol, or reduced palatinose.
- D A component may be used individually by 1 type and may use 2 or more types together.
- the content of the component (D) with respect to the whole oral composition is not particularly limited, but the total amount is preferably 0.5 to 50% by mass.
- the content is preferably 0.5% by mass or more, and more preferably 3% by mass or more.
- the upper limit of the xylitol content is not particularly limited, but is preferably 10% by mass or less, and more preferably 7% by mass or less.
- the content is preferably 0.5 to 10% by mass, and more preferably 3 to 7% by mass.
- the content is preferably 2% by mass or more, and more preferably 10% by mass or more.
- the upper limit of the content of reduced palatinose is not particularly limited, but is preferably 50% by mass or less, and more preferably 40% by mass or less.
- the content thereof is preferably 2 to 50% by mass, more preferably 10 to 40% by mass.
- the content is preferably 2% by mass or more, and more preferably 10% by mass or more.
- the upper limit of the erythritol content is not particularly limited, but is preferably 50% by mass or less, and more preferably 40% by mass or less.
- the content is preferably 2 to 50% by mass, and more preferably 10 to 40% by mass.
- the usability improvement effect may not be sufficiently obtained, and the dentin surface coloring suppression effect may not be sufficiently improved.
- content of the sum total of (D) component with respect to the whole composition for oral cavity shall be 50 mass% or less.
- the total content of the component (D) exceeds 50% by mass, the stability of the component (D) in the preparation produced using the oral composition is deteriorated, so that the dentin surface coloring suppression effect May be insufficient.
- the oral composition of the present invention can contain necessary optional components in addition to the above components.
- ⁇ Optional component> examples include surfactants, abrasives, binders, thickeners, sweeteners, preservatives, fragrances, medicinal ingredients, and water.
- An arbitrary component can be mix
- the types of surfactants include anionic surfactants, nonionic surfactants, and amphoteric surfactants.
- the surfactant include anionic surfactants such as N-acyl amino acid salts, ⁇ -olefin sulfonates, N-acyl sulfonates, alkyl sulfates, sulfates of glycerin fatty acid esters; polyoxyethylene alkyl ethers , Polyoxyethylene-polyoxypropylene block copolymer, polyoxyethylene hydrogenated castor oil, polyoxyethylene ether of glycerin ester, sucrose fatty acid ester, sorbitan fatty acid ester, alkylolamide and other nonionic surfactants; fatty acid amidopropyl There are amphoteric surfactants such as betaine.
- the oral composition contains a surfactant
- a surfactant it is usually 0 to 10% by mass, preferably 0.01 to 5% by mass, based on the total amount of the oral composition.
- these surfactants may be used individually by 1 type, and can also use 2 or more types together.
- anionic surfactant N-acyl amino acid salts, ⁇ -olefin sulfonates, alkyl sulfates and the like are suitably used particularly from the viewpoint of versatility.
- anionic surfactants include sodium lauroyl sarcosine in terms of foamability and hard water resistance, sodium ⁇ -olefin sulfonate having 10 to 16 carbon atoms as the alkyl chain, and sodium lauryl sulfate. Is preferred.
- nonionic surfactant polyoxyethylene alkyl ether, polyoxyethylene hydrogenated castor oil, alkylolamide, sorbitan fatty acid ester and the like are suitably used particularly from the viewpoint of versatility.
- specific examples of nonionic surfactants include polyoxyethylene alkyl ethers having an alkyl chain carbon chain length of 14 to 18 and an ethylene oxide average addition mole number of 15 to 30, and an ethylene oxide average addition mole number of 40.
- amphoteric surfactant a betaine-based one is preferable.
- an alkylbetaine-based, fatty acid amidopropyl betaine-based, or alkylimidazolinium betaine-based amphoteric surfactant is preferably used.
- amphoteric surfactants include alkyldimethylaminoacetic acid betaines such as lauryldimethylaminoacetic acid betaine; alkyl imidazolinium betaines such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine; Examples include fatty acid amidopropyl betaines such as coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine and coconut oil fatty acid amidopropyl betaine. Among them, the amphoteric surfactant is preferably coconut oil fatty acid amidopropyl betaine or 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine.
- abrasive examples include silica-based abrasives such as silicic anhydride, crystalline silica, amorphous silica, silica gel, aluminosilicate; zeolite, calcium hydrogen phosphate anhydrate, calcium hydrogen phosphate dihydrate, There are synthetic resin-based abrasives such as calcium carbonate, aluminum hydroxide, alumina, magnesium carbonate, tertiary magnesium phosphate, zirconium silicate, tertiary calcium phosphate, hydroxyapatite, and tertiary calcium phosphate.
- silica-based abrasives such as silicic anhydride, crystalline silica, amorphous silica, silica gel, aluminosilicate; zeolite, calcium hydrogen phosphate anhydrate, calcium hydrogen phosphate dihydrate
- synthetic resin-based abrasives such as calcium carbonate, aluminum hydroxide, alumina, magnesium carbonate, tertiary magnesium
- the dentifrice is preferably 0 to 40% by mass, more preferably 5 to 20% by mass of the entire composition.
- the content is preferably 0 to 10% by mass, more preferably 0 to 5% by mass, based on the entire composition.
- binder examples include pullulan, gelatin, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, xanthan gum, gum arabic, guar gum, locust bean gum, polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyacrylate, and thickening. There is silica.
- the oral composition contains a binder, the content is usually 0.01 to 10% by mass based on the entire preparation produced using the oral composition.
- the thickener examples include propylene glycol, butylene glycol, glycerin, sorbitol, and polyethylene glycol.
- the content thereof is usually 1 to 50% by mass based on the whole preparation produced using the oral composition.
- Sweetening agents include, for example, sodium saccharin, stevioside, neohesperidin hydrochalcone, glycyrrhizin, perilartin, p-methoxycinnamic aldehyde, thaumatin and maltitol.
- the blending amount can be appropriately determined within a range not impairing the effects of the present invention.
- preservative examples include sodium benzoate, paraoxybenzoate ester, methyl paraben, ethyl paraben, butyl paraben, ethylenediamine tetraacetate, and benzalkonium chloride.
- the blending amount can be appropriately determined within a range not impairing the effects of the present invention.
- fragrances include essential oils such as peppermint and spearmint; fruit-based essences such as lemon and strawberry; There are fragrance materials such as ⁇ -terpineol, methyl salicylate, thymol, rosemary oil, sage oil, perilla oil, lemon oil and orange oil.
- the amount is preferably 0.000001 to 1% by mass relative to the total amount of the oral composition.
- bactericidal or antibacterial agents such as chlorhexidine, triclosan, isopropylmethylphenol, cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, zinc gluconate and zinc citrate; anticalculus agents such as ethanehydroxydiphosphonate Anti-inflammatory agents such as tranexamic acid, glycyrrhizin dipotassium salt and ⁇ -aminocaproic acid; coating agents such as hydroxyethylcellulose dimethyl diallylammonium chloride; enzyme agents such as dextranase and mutanase can be used.
- a dentifrice, a mouthwash, and the like are preferable from the viewpoint of effectiveness and stability, and water, ethanol, or the like can be blended as a solvent.
- the compounding ratio of these optional components can be a normal dose in a range that does not impair the effect of the composition for oral cavity of the present invention.
- the pH of the oral composition of the present invention is preferably 5 to 9, more preferably 6 or 7 to 8, and the pH is adjusted using a pH adjuster as necessary.
- a pH adjuster phosphoric acid or a salt thereof (sodium phosphate, sodium hydrogen phosphate, etc.), citric acid or a salt thereof (sodium citrate, etc.), malic acid or a salt thereof, gluconic acid or a salt thereof, maleic acid or
- the salt, succinic acid or a salt thereof, glutamic acid or a salt thereof, lactic acid, hydrochloric acid, acetic acid, nitric acid, sodium hydroxide, potassium hydroxide, or the like may be used as long as the effect of the oral composition of the present invention is not impaired. it can.
- Dentin coloring inhibitor of the present invention When the above components (A) and (B) are used in combination, it is possible to prevent dentin, specifically, dentin surface and subsurface coloring. Therefore, the composition containing (A) component and (B) component is useful as a dentin coloring inhibitor, especially a dentin coloring inhibitor by Maillard reaction derived from dentin collagen which is a dentin structure
- the dosage form of the dentin coloring inhibitor of the present invention is not particularly limited.
- it can be administered as a mouthwash, a mouth freshener, or a dentifrice (liquid dentifrice, gel dentifrice, toothpaste, etc.).
- the user who uses the dentin coloring inhibitor of the present invention is not particularly limited. However, from the viewpoint of preventing dentin from being colored, elderly people, subjects who can observe gingival retraction, and the like are preferable.
- ⁇ Other additive components Sodium lauryl sulfate (surfactant), sorbit (thickener), propylene glycol (thickener), sodium saccharin (sweetener), xanthan gum (binder), silicic anhydride (abrasive), flavor, purified water ( solvent)
- surfactant sorbit
- propylene glycol thickener
- sodium saccharin sweetener
- xanthan gum binder
- silicic anhydride abrasive
- flavor purified water
- Examples 1-36 and Comparative Examples 1-3 Using the above components, the dentifrice compositions of Examples 1 to 36 and Comparative Examples 1 to 3 were prepared by the following preparation methods according to the formulation shown in Tables 1 to 6.
- Bovine roots were cut into blocks, and cementum was removed by surface polishing. About 3.5 mm ⁇ 3.5 mm of the part from which the cementum was removed was used for the decalcification window, and the other part was coated with nail polish. The nail polish was dried at room temperature and then immersed in an aqueous 0.1 mol / L acetic acid solution (pH 4.5) for 50 hours to prepare a root surface dentin sample in which collagen was exposed in the window portion.
- a color difference (L * 0, a * 0, b * 0) was measured using a spectrocolorimeter (Minolta, CM-2022).
- the discharged saliva was centrifuged (10000 g, 20 minutes, 20 ° C.), and the root surface dentin sample was stirred and immersed in the obtained supernatant at 37 ° C. for 30 minutes, and then Examples 1 to 6 shown in Tables 1 to 6 were used. 36 and Comparative Examples 1 to 3 were immersed in a 3-fold water dilution of the dentifrice compositions for 3 minutes at room temperature.
- a root surface dentin sample was prepared in the same manner as the method prepared in (Evaluation of coloring suppression effect on dentin surface). Stained pellicles were formed after immersion in the saliva discharged and a 3-fold water dilution of the dentifrice compositions of Examples 1-36 and Comparative Examples 1-3 shown in Tables 1-6. Using the stereoscopic microscope observation image, the depth of the subsurface coloring from the collagen surface layer in the formed stained pellicle window was measured and evaluated according to the following evaluation criteria.
- the dentifrice composition containing sodium pyrrolidonecarboxylate and sodium pyrophosphate having a coloring suppression effect on the dentin surface and under the surface layer was added to (C) a fluorine compound and (D )
- the effect of inhibiting the coloring of dentin was further improved and the feeling of use was also improved.
- a mouthwash (Example 37), a mouth freshener (Example 38), and a gel dentifrice (Example 39) were produced, and the above-described evaluation test As a result, both the dentin surface coloring suppression effect and the dentin surface coloring suppression effect were A, and the usability (no irritation) evaluation was A.
- Each composition is shown below.
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Abstract
Description
〔1〕(A)成分:ピロリドンカルボン酸及びその無機塩基塩の少なくともいずれかと、(B)成分:水溶性ピロリン酸及びその塩の少なくともいずれかと、を含有する口腔用組成物。
〔2〕(A)成分の含有量が0.1~10質量%である、上記〔1〕に記載の口腔用組成物。
〔3〕(B)成分の含有量が0.01~5質量%である、上記〔1〕又は〔2〕に記載の口腔用組成物。
〔4〕(A)成分と(B)成分の質量比(A/B)が、0.1~300である、上記〔1〕~〔3〕のいずれかに記載の口腔用組成物。
〔5〕(C)成分:フッ素化合物を更に含有する上記〔1〕~〔4〕のいずれかに記載の口腔用組成物。
〔6〕(C)成分の含有量が、フッ素含有率として0.01~0.5質量%である上記〔5〕に記載の口腔用組成物。
〔7〕(D)成分:キシリトール、還元パラチノース、及びエリスリトールからなる群から選択される少なくとも一種の糖アルコールを更に含有する上記〔1〕~〔6〕のいずれかに記載の口腔用組成物。
〔8〕(D)成分の含有量が、0.5~50質量%である上記〔7〕に記載の口腔用組成物。
〔9〕キシリトールの含有量が0.5~10質量%、還元パラチノースの含有量が2~50質量%、還元パラチノースの含有量が2~50質量%である、上記〔7〕又は〔8〕に記載の口腔用組成物。
〔10〕歯磨剤又は洗口剤である、上記〔1〕~〔9〕のいずれかに記載の口腔用組成物。
〔11〕(A)成分:ピロリドンカルボン酸及びその無機塩基塩の少なくともいずれかと、(B)成分:水溶性ピロリン酸及びその塩の少なくともいずれかと、を含有する象牙質着色抑制剤。
本発明者等は、従来の口腔用組成物に比べて、象牙質の表面と表層下の着色抑制効果に優れた口腔用組成物を得るために鋭意検討を重ねた。その結果、ピロリドンカルボン酸及びその無機塩基塩の少なくともいずれかと、水溶性ピロリン酸及びその塩の少なくともいずれかと、を組み合わせた口腔用組成物に、強固な象牙質表面の着色の抑制に加えて象牙質表層下の着色も抑制できることを見出した。
本発明の口腔用組成物に含有される(A)成分は、ピロリドンカルボン酸及びその無機塩基塩の少なくともいずれかである。
ピロリドンカルボン酸の無機塩基塩としては、例えば、ピロリドンカルボン酸の1~3価の無機塩基塩が挙げられる。1~3価の無機塩基塩としては、例えば、1~3価の金属塩がある。1~3価の金属塩としては、例えば、ナトリウム塩、カリウム塩等のアルカリ金属塩;カルシウム塩、マグネシウム塩等のアルカリ土類金属塩;銅塩、亜鉛塩、アルミニウム塩等が挙げられる。これらの中でも、ナトリウム塩、カリウム塩、カルシウム塩、マグネシウム塩、アルミニウム塩が好ましく、ナトリウム塩、カリウム塩がより好ましい。
本発明の口腔用組成物に含有される(B)成分は、水溶性ピロリン酸及びその塩の少なくともいずれかである。特に、水溶性ピロリン酸塩は、化学式M4・P2O7(式中、Mは水素イオン、又はナトリウム、カリウム等のアルカリ金属イオンである。)で表され、リン酸が脱水縮合した化合物である。
フッ素化合物の具体例としては、フッ化ナトリウム、フッ化カリウム、フッ化アンモニウム、フッ化スズ、アミンフッ化物、モノフルオロリン酸ナトリウム、モノフルオロリン酸カリウム、フッ化ケイ素ナトリウム、フッ化ケイ素カルシウムを挙げることができる。中でも、特に好ましくはフッ化ナトリウム、モノフルオロリン酸ナトリウムである。
(D)成分として用いられる糖アルコールは、キシリトール、エリスリトール、還元パラチノースである。(D)成分は、1種単独で使用してもよく、2種以上を併用してもよい。
任意成分としては、例えば、界面活性剤、研磨剤、粘結剤、粘稠剤、甘味剤、防腐剤、香料、薬用成分、水がある。任意成分は、本発明による効果を損なわない範囲で本発明の口腔用組成物に配合することができる。以下に任意成分の具体例を示すが、本発明の口腔用組成物に配合可能な任意成分はこれらに制限されるものではない。
上記の(A)成分及び(B)成分を併用すると、象牙質、詳細には象牙質の表面及び表層下の着色を防止することができる。従って、(A)成分及び(B)成分を含有する組成物は、象牙質着色抑制剤、特に象牙質組織である象牙質コラーゲンに由来するメイラード反応による象牙質着色抑制剤として有用である。
<(A)成分>
ピロリドンカルボン酸ナトリウム
味の素株式会社製、商品名「AJIDEW N-50(登録商標))」
<(B)成分>
ピロリン酸ナトリウム
太平化学産業株式会社製
<(C)成分>
フッ化ナトリウム
ステラケミファ株式会社製(精製フッ化ナトリウム(S))
モノフルオロリン酸ナトリウム
ICLジャパン株式会社製
<(D)成分>
キシリトール
ロケットジャパン株式会社製
還元パラチノース
三井製糖株式会社製
エリスリトール
三菱化学フーズ株式会社製
<その他の添加成分>
ラウリル硫酸ナトリウム(界面活性剤)、ソルビット(粘稠剤)、プロピレングリコール(粘稠剤)、サッカリンナトリウム(甘味剤)、キサンタンガム(粘結剤)、無水ケイ酸(研磨剤)、香料、精製水(溶剤)
上記の添加成分としては、化粧品原料基準規格品を用いた。
上記の成分を用いて、表1~6に示す配合処方に従って、下記調製方法により、実施例1~36及び比較例1~3の歯磨剤組成物を調製した。
精製水に、(A成分)ピロリドンカルボン酸ナトリウム、(B成分)ピロリン酸ナトリウム、(C成分)フッ素化合物、(D成分)糖アルコール、100質量%ソルビトール、サッカリンナトリウムを溶解させた後、別途、プロピレングリコール、キサンタンガムを分散させた液を加え、攪拌した。その後、ラウリル硫酸ナトリウム、香料、研磨剤を加え、更に減圧下(圧力4kPa)で攪拌し、歯磨剤組成物を調製した。なお、製造には、1.5Lニーダー(石山工作所社製)を用いた。調製した歯磨剤組成物について、下記手順に従って、象牙質表面及び表層下の着色抑制効果の評価及び使用性の評価を行った。評価結果を表1~6に併せて記す。
1.メイラード反応液の調製
1%グリシン、1%グルコースを110℃で1時間、オートクレーブで加熱し、メイラード反応液を調製した。
牛歯根をブロック状に切断し、表面研磨によりセメント質を除去した。セメント質を除去した部分の内、約3.5mm×3.5mmを脱灰ウィンドウ用とし、それ以外の部分をマニキュア被覆した。マニキュアを室温で乾燥後、水溶液0.1mol/Lの酢酸水溶液(pH4.5)中に50時間浸漬してウィンドウ部にコラーゲンを露出させた根面象牙質サンプルを調製した。
測定ウィンドウを蒸留水で軽くすすぎ、余分な水分をろ紙で吸い取った。乾燥させた後、色差(L*1、a*1、b*1)測定を3回実施し、平均値を算出した。着色抑制効果は、下記式より算出したΔE値を用いて、下記評価基準により評価した。
ΔE値=((L*1-L*0)2+(a*1-a*0)2+(b*1-b*0)2)1/2
A: ΔE<10
B: 10≦ΔE<15
C: 15≦ΔE<20
D: 20≦ΔE<25
E: 25≦ΔE
(象牙質表面の着色抑制効果の評価)で調製した方法と同様にして、根面象牙質サンプルを調製した。吐出唾液並びに表1~6に示す実施例1~36及び比較例1~3の歯磨剤組成物の3倍水希釈液へ浸漬した後、ステインドペリクルを形成した。実体顕微鏡観察画像を用いて、形成したステインドペリクルウィンドウ部における、コラーゲン表層からの表層下着色の深さを測定し、下記評価基準により評価した。
A: 表面からの表層下着色<15μm
B: 15μm≦表面からの表層下着色<20μm
C: 20μm≦表面からの表層下着色<50μm
D: 50μm≦表面からの表層下着色<100μm
E: 100μm≦表面からの表層下着色
各実施例・比較例の歯磨剤組成物を蒸留水で3倍希釈した処置液を、20名のパネラーに30秒間口に含んでもらい、吐出後の口腔内の痛みの有無を評価した。評価基準は以下の通り設定した。
A:痛みを呈した人が1人以下
B:痛みを呈した人が2人以上5人以下
C:痛みを呈した人が6人以上10人未満
D:痛みを呈した人が10人以上
組成
A成分:ピロリドンカルボン酸ナトリウム(和光純薬工業株式会社製):3%
B成分:ピロリン酸カリウム(太平化学産業株式会社製):1%
C成分:フッ化ナトリウム(ステラケミファ株式会社製)0.04%(フッ素含有率:0.02%)
C成分:モノフルオロリン酸ナトリウム(ICLジャパン株式会社製)0.23%(フッ素含有率:0.03%)
D成分:キシリトール(ロケットジャパン株式会社製):5%
D成分:還元パラチノース(三井製糖株式会社製):15%
グリセリン:5%
エタノール:8%
ポリオキシエチレン硬化ヒマシ油(60E.O.):0.8%
クエン酸ナトリウム:0.1%
クエン酸:0.3%
安息香酸ナトリウム:0.5%
香料:0.2%
精製水:残部
組成
A成分:ピロリドンカルボン酸ナトリウム(和光純薬工業株式会社製):3%
B成分:ピロリン酸カリウム(太平化学産業株式会社製):1%
C成分:フッ化ナトリウム(ステラケミファ株式会社製): 0.04%(フッ素含有率:0.02%)
D成分:キシリトール(ロケットジャパン株式会社製):5%
D成分:還元パラチノース(三井製糖株式会社製):10%
D成分:エリスリトール(三菱化学フーズ株式会社製):10%
グリセリン:13%
エタノール:40%
ポリオキシエチレン硬化ヒマシ油(60E.O.):3%
クエン酸ナトリウム:0.1%
クエン酸:0.03%
メントール:0.3%
香料:0.4%
精製水:残部
組成
A成分:ピロリドンカルボン酸ナトリウム(和光純薬工業株式会社製):3%
B成分:ピロリン酸カリウム(太平化学産業株式会社製):1%
C成分:フッ化ナトリウム(ステラケミファ株式会社製):0.04%(フッ素含有率:0.02%)
D成分:キシリトール(ロケットジャパン株式会社製):5%
D成分:還元パラチノース(三井製糖株式会社製):10%
D成分:エリスリトール(三菱化学フーズ株式会社製):10%
増粘性シリカ:1.5%
プロピレングリコール:3%
ソルビット液:55%
カラギーナン:0.3%
キサンタンガム:0.3%
塩化セチルピリジニウム:0.02%
サッカリンナトリウム:0.12%
硝酸カリウム:5%
ヤシ油脂肪酸アミドプロピルベタイン液:0.3%
香料:0.4%
精製水:残部
Claims (11)
- (A)成分:ピロリドンカルボン酸及びその無機塩基塩の少なくともいずれかと、
(B)成分:水溶性ピロリン酸及びその塩の少なくともいずれかと、を含有する口腔用組成物。 - (A)成分の含有量が0.1~10質量%である、請求項1に記載の口腔用組成物。
- (B)成分の含有量が0.01~5質量%である、請求項1又は2に記載の口腔用組成物。
- (A)成分と(B)成分の質量比(A/B)が、0.1~300である、請求項1~3のいずれか1項に記載の口腔用組成物。
- (C)成分:フッ素化合物を更に含有する請求項1~4のいずれか1項に記載の口腔用組成物。
- (C)成分の含有量が、フッ素含有率として0.01~0.5質量%である請求項5に記載の口腔用組成物。
- (D)成分:キシリトール、還元パラチノース、及びエリスリトールからなる群から選択される少なくとも一種の糖アルコールを更に含有する請求項1~6のいずれか1項に記載の口腔用組成物。
- (D)成分の含有量が、0.5~50質量%である請求項7に記載の口腔用組成物。
- キシリトールの含有量が0.5~10質量%、還元パラチノースの含有量が2~50質量%、還元パラチノースの含有量が2~50質量%である、請求項7又は8に記載の口腔用組成物。
- 歯磨剤又は洗口剤である、請求項1~9のいずれか1項に記載の口腔用組成物。
- (A)成分:ピロリドンカルボン酸及びその無機塩基塩の少なくともいずれかと、
(B)成分:水溶性ピロリン酸及びその塩の少なくともいずれかと、を含有する象牙質着色抑制剤。
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