Composition for oral cavity

Abstract

To provide a composition for oral cavity that expresses satisfactory adhesion property on an initial stage when applied into an oral cavity, and can be uniformly dispersed as the composition is gradually diluted by saliva.SOLUTION: A composition for oral cavity contains the following components (A), (B), (C) and (D): (A) sugar alcohol in which the number of hydroxy groups in a molecular structure is 9 or more; (B) a binder; (C) water; and (D) silicon dioxide by 0.01 mass% or more and 6 mass% or less in terms of SiO2, where a content of water-insoluble inorganic powder other than the component (D) is less than 40 mass%.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an oral composition. [Background technology]

[0002] Sugar alcohols, which are obtained by converting the carbonyl group of a carbohydrate to a hydroxyl group, are known to have various physical properties depending on the type, and are also widely used in oral compositions.

[0003] For example, Patent Document 1 discloses a dentifrice composition containing a sugar alcohol having a specific solubility, and specific amounts of water, methylcellulose, trehalose, etc., and attempts to suppress viscosity reduction under high-temperature storage conditions and ensure good shape retention, etc. In addition, Patent Document 2 discloses an oral composition containing a sugar alcohol mixture containing a large amount of xylitol, and specific amounts of polyethylene glycol and water, which stabilizes the composition by suppressing the precipitation of xylitol crystals. Furthermore, Patent Document 3 discloses a dentifrice composition that contains specific amounts of water, glycerin, etc., together with erythritol having a specific particle size, thereby suppressing the crystal growth of erythritol and improving storage stability. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-140351 A [Patent Document 2] Japanese Patent Application Publication No. 11-209253 [Patent Document 3] JP 2009-23953 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, after application to the oral cavity, such oral compositions are gradually diluted by saliva over time, and the inherent physical properties and functions of the compositions are gradually weakened, with the result that the desired effects may not be fully achieved. However, none of the above patent documents considers the effect that dilution by saliva after application to the oral cavity has on the composition, and the present inventors have noticed that there is room for improvement.

[0006] Therefore, the present invention relates to an oral composition which, when applied to the oral cavity, exhibits good adhesion in the initial stage and can be uniformly dispersed as it is gradually diluted by saliva. [Means for solving the problem]

[0007] The inventors therefore conducted various studies and found that by containing a sugar alcohol having a specific number of hydroxy groups in its molecular structure, as well as a binder, water, and a specific amount of silicon dioxide, while limiting the content of water-insoluble inorganic powder, it is possible to obtain an oral composition that adheres well to the oral cavity immediately after application and exhibits excellent dispersibility even as it is gradually diluted.

[0008] That is, the present invention relates to a composition comprising the following components (A), (B), (C), and (D): (A) Sugar alcohol with 9 or more hydroxyl groups in its molecular structure (B) Binder (C)Water (D) Silicon dioxide SiO 2 Converted amount: 0.01% by mass or more and 6% by mass or less and a content of water-insoluble inorganic powder other than component (D) is less than 40 mass %. Effect of the Invention

[0009] According to the oral composition of the present invention, when applied to the oral cavity, in the initial stage, it exhibits good adhesion while avoiding excessive viscosity reduction, and the composition can be effectively retained in the oral cavity. Furthermore, as the composition is gradually diluted by saliva in the oral cavity, it is dispersed uniformly and evenly, and the composition can be distributed throughout the oral cavity. Therefore, by incorporating an active ingredient such as a bactericide or a medicinal ingredient in the oral composition of the present invention, it becomes possible for the active ingredient to exert its desired effect effectively and efficiently. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described in detail below. In the present invention, when the oral composition is applied to the oral cavity, the sites where the composition exhibits adhesion and dispersibility are the surfaces of organs constituting the oral cavity, specifically the surfaces of the teeth, organs located around the teeth including the gums, the palate, the tongue, the floor of the mouth, etc. Hereinafter, these are collectively referred to as "teeth, etc."

[0011] The oral composition of the present invention contains, as component (A), a sugar alcohol having 9 or more hydroxyl groups in its molecular structure. By containing such component (A), the development of adhesion to teeth, etc., mainly brought about by component (B) described below, and the development of highly uniform dispersibility, mainly brought about by component (C) described below, can be achieved with a time lag as dilution by saliva progresses. That is, while components (B) and (C) are present in the oral composition of the present invention, the numerous hydroxyl groups present in the intermediate component (A) act as a buffer, enabling the composition to develop good adhesion in the early stages when applied to the oral cavity, and to exhibit excellent dispersibility as it is gradually diluted by saliva.

[0012] Component (A) may specifically be one or more selected from maltitol, reduced palatinose, lactitol, maltitriitol, isomaltotriitol, maltoteritol, and isomaltoteritol. Among them, from the viewpoint of enabling the expression of good adhesion and excellent dispersibility with a time lag depending on dilution by saliva, one or two selected from maltitol and reduced palatinose are preferred, and maltitol is more preferred.

[0013] The content of component (A) in the oral cavity composition of the present invention is preferably 3% by mass or more, more preferably 4% by mass or more, even more preferably 5% by mass or more, preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 20% by mass or less, from the viewpoint of exhibiting good adhesion at an early stage and effectively exhibiting excellent dispersibility with dilution by saliva. The content of component (A) in the oral cavity composition of the present invention is preferably 3% by mass or more and 40% by mass or less, more preferably 4 to 30% by mass, and even more preferably 5 to 20% by mass.

[0014] The oral composition of the present invention contains a binder as component (B). Component (B) in combination with components (A) and (D) etc., exerts good adhesion while avoiding excessive viscosity reduction in the initial stage when the oral composition of the present invention is applied to the oral cavity, and enables the composition to be effectively retained on the teeth etc., while also preventing inhibition of the exertion of excellent dispersibility due to dilution with saliva. In the present invention, the term "binder" also includes what is called a "viscosity adjuster."

[0015] Specific examples of component (B) include one or more selected from cellulose-based binders such as sodium carboxymethylcellulose, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, and hydroxypropylmethylcellulose; polymer-based binders such as carboxyvinyl polymers and acrylic acid / alkyl (meth)acrylate copolymers; and sodium alginate, sodium polyacrylate, sodium hyaluronate, sodium chondroitin sulfate, carrageenan, xanthan gum, pectin, agar, tragacanth gum, gum arabic, guar gum, karaya gum, locust bean gum, gellan gum, tamarind gum, and psyllium seed gum. In particular, from the viewpoint of exhibiting good adhesion while avoiding excessive viscosity reduction in the early stage after application to the oral cavity, it is preferable that component (B) contains a cellulose-based binder, and it is more preferable that such a cellulose-based binder is sodium carboxymethylcellulose.

[0016] The degree of etherification of sodium carboxymethylcellulose is preferably less than 1, more preferably 0.9 or less, even more preferably 0.8 or less, preferably 0.5 or more, more preferably 0.55 or more, and even more preferably 0.6 or more. Here, the degree of etherification is the degree of etherification of three hydroxyl groups per cellulose unit that are converted to carboxymethyl groups (-CH 2 COONa), which is a value determined by the ashing method.

[0017] From the viewpoint of exhibiting good adhesion at an early stage when applied to the oral cavity, the content of component (B) in the oral cavity composition of the present invention is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 2.5% by mass or more, preferably 5% by mass or less, more preferably 4.5% by mass or less, and more preferably 4% by mass or less. The content of component (B) in the oral cavity composition of the present invention is preferably 1% by mass or more and 5% by mass or less, more preferably 2 to 4.5% by mass, and even more preferably 2.5 to 4% by mass.

[0018] Furthermore, when component (B) contains a cellulose-based binder, the content of such cellulose-based binder in component (B) is preferably 50 mass% or more, more preferably 60 mass% or more, and even more preferably 70 mass% or more. There is no particular upper limit, but it may be 80 mass% or less, or 90 mass% or less, and it is more preferably 100 mass%.

[0019] From the viewpoint of effectively achieving both good adhesion and, secondarily, excellent dispersibility through the presence of component (A) having a hydroxy group in the molecule, the mass ratio of the content of component (A) to the content of component (B) ((A) / (B)) is preferably 0.2 or more, more preferably 0.5 or more, even more preferably 1 or more, and preferably 20 or less, more preferably 10 or less, and even more preferably 5 or less. The mass ratio of the content of component (A) to the content of component (B) ((A) / (B)) is preferably 0.2-20, more preferably 0.5-10, and even more preferably 1-5.

[0020] The oral composition of the present invention contains water as component (C). The water of component (C) refers to the total water contained in the oral composition, including not only purified water and the like contained in the oral composition, but also the water contained in each of the components contained therein.

[0021] From the viewpoint of ensuring uniform solubility or dispersibility of each component, and enabling both good adhesion and excellent dispersibility of the composition, the content of component (C) in the oral composition of the present invention is preferably 25% by mass or more, more preferably 30% by mass or more, even more preferably 35% by mass or more, preferably 60% by mass or less, more preferably 55% by mass or less, and even more preferably 50% by mass or less. The content of component (C) in the oral composition of the present invention is preferably 25 to 60% by mass, more preferably 30 to 55% by mass, and even more preferably 35 to 50% by mass.

[0022] The content of component (C) can be calculated from the amount of water added and the amount of water in the added components, but can also be measured, for example, with a Karl Fischer moisture meter. For example, a trace moisture measuring device (manufactured by Hiranuma Sangyo Co., Ltd.) can be used as the Karl Fischer moisture meter. With this device, 5 g of the oral composition is taken and suspended in 25 g of anhydrous methanol, and 0.02 g of this suspension is taken to measure the moisture content.

[0023] From the viewpoint of effectively achieving both good adhesion and, secondarily, excellent dispersibility through the presence of component (A) having a hydroxy group in the molecule, the mass ratio of the content of component (C) to the content of component (A) ((C) / (A)) is preferably 1 or more, more preferably 1.5 or more, even more preferably 1.8 or more, and is preferably 30 or less, more preferably 20 or less, and even more preferably 10 or less. The mass ratio of the content of component (C) to the content of component (A) ((C) / (A)) is preferably 1 to 30, more preferably 1.5 to 20, and even more preferably 1.8 to 10.

[0024] The mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.05 or more, more preferably 0.07 or more, and preferably 0.3 or less, more preferably 0.2 or less, from the viewpoint of effectively exhibiting good adhesion at an early stage after application to the oral cavity and not inhibiting the subsequent expression of excellent dispersibility. The mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.05 or more and 0.3 or less, more preferably 0.07 to 0.2.

[0025] The oral composition of the present invention contains silicon dioxide (SiO ) as component (D). 2 The content is 0.01% by mass or more and 6% by mass or less in terms of the converted amount. Since the component (D) is the main component, when the oral cavity composition of the present invention is applied to the oral cavity, it is possible to develop excellent dispersibility as it is diluted with saliva without inhibiting the development of good adhesion in the initial stage. In the present invention, "silicon dioxide" refers to a material that does not contain SiO 2 Compounds containing, for example, SiO 2 In addition, Na 2 O and K 2 O or H 2 In the present invention, the term "silicon dioxide content" includes compounds containing SiO 2 The value is expressed as the converted amount.

[0026] Specific examples of component (D) include one or more selected from the group consisting of silicic acid or a salt thereof, such as sodium silicate, potassium silicate, and sodium metasilicate; silicic anhydride, such as abrasive silica and thickening silica; and silica hydrogel. Component (D) may also be any of amorphous silica, precipitated silica, and amorphous precipitated silica.

[0027] Among them, it is preferable to use silicon dioxide having an oil absorption of less than 160 mL / 100 g as component (D). More specifically, the amount of silicon dioxide having an oil absorption of less than 160 mL / 100 g is SiO 2 of component (D). 2 Of the total converted amount, SiO 2In terms of converted amount, it is preferably 45% by mass or more, more preferably 55% by mass or more, and even more preferably 65% ​​by mass or more. There is no particular upper limit, but it may be 80% by mass or less, or 90% by mass or less, and it is more preferably 100% by mass. In the present invention, the term "oil absorption capacity" refers to the amount of oil that can be supported by silicon dioxide, and is measured according to JIS K5101-13-2 (established in 2004), and means a value determined by the amount of boiled linseed oil absorbed.

[0028] The content of component (D) in the oral cavity composition of the present invention is set to SiO 2 or less from the viewpoint of exhibiting good adhesion and then exhibiting excellent dispersibility upon dilution with saliva. 2 The content of component (D) in the oral cavity composition of the present invention is 0.01% by mass or more, preferably 0.05% by mass or more, more preferably 0.15% by mass or more, even more preferably 1% by mass or more, even more preferably 1.5% by mass or more, even more preferably 2.5% by mass or more, even more preferably 3% by mass or more, 6% by mass or less, preferably 5.5% by mass or less, more preferably 5% by mass or less, even more preferably 4.5% by mass or less, and even more preferably 4% by mass or less. 2 In terms of converted amount, the content is 0.01 mass% or more and 6 mass% or less, preferably 0.05 to 6 mass%, more preferably 0.15 to 6 mass%, even more preferably 1 to 5.5 mass%, still more preferably 1.5 to 5 mass%, even more preferably 2.5 to 4.5 mass%, and even more preferably 3 to 4 mass%.

[0029] In the oral cavity composition of the present invention, the content of the water-insoluble inorganic powder other than component (D) is less than 40% by mass. If the water-insoluble inorganic powder other than component (D) is present in an excessive amount, there is a high possibility that it will inhibit the development of adhesion in the early stage after application to the oral cavity, and there is also a possibility that it will excessively accelerate the development of dispersibility, so the content thereof is limited in the present invention. In the present invention, "water-insoluble" means that the amount of the substance that dissolves in 100 g of water (at 20° C.) is 1 g or less.

[0030] Specific examples of the water-insoluble inorganic powder other than component (D) include one or more types selected from calcium carbonate, such as light calcium carbonate and heavy calcium carbonate, zeolite, calcium phosphate, such as dibasic calcium phosphate, tribasic calcium phosphate, and calcium hydrogen phosphate, calcium pyrophosphate, magnesium carbonate, and hydrates thereof.

[0031] The content of water-insoluble inorganic powders other than component (D) in the oral composition of the present invention is less than 40% by mass, preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less, and even more preferably 5% by mass or less, or it is preferable that the oral composition of the present invention does not contain any water-insoluble inorganic powders other than component (D).

[0032] From the viewpoint of effectively achieving both good adhesion and secondarily excellent dispersibility through the presence of component (A) having a hydroxy group in the molecule, the mass ratio of the content of component (D) to the content of component (A) ((D) / (A)) is preferably 0.005 or more, more preferably 0.03 or more, even more preferably 0.1 or more, and preferably 10 or less, more preferably 5 or less, even more preferably 1 or less, and still more preferably 0.5 or less. The mass ratio of the content of component (D) to the content of component (A) ((D) / (A)) is preferably 0.005 to 10, more preferably 0.03 to 5, even more preferably 0.1 to 1, and even more preferably 0.1 to 0.5.

[0033] In order to effectively achieve both good adhesion at an early stage after application to the oral cavity and subsequent excellent dispersibility, it is preferable that the oral composition of the present invention further contains one or more alcohols (E) selected from sugar alcohols (e1) having 8 or less hydroxy groups in their molecular structure and polyhydric alcohols (e2) having 8 or less hydroxy groups in their molecular structure.

[0034] Specific examples of the component (e1) include one or more selected from sorbitol, erythritol, and xylitol. Of these, one or two selected from sorbitol and erythritol are preferred. Specific examples of the component (e2) include one or more selected from glycerin, propylene glycol, ethanol, and polyethylene glycol. Among these, one or two selected from glycerin and propylene glycol are preferred.

[0035] From the viewpoint of effectively achieving both good adhesion and excellent dispersibility, the content of component (E) in the oral composition of the present invention is preferably 20% by mass or more, more preferably 25% by mass or more, even more preferably 30% by mass or more, still more preferably 34% by mass or more, and preferably 45% by mass or less, more preferably 40% by mass or less, and even more preferably 37% by mass or less. In particular, the content of component (e1) in the oral composition of the present invention is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less. In addition, the content of component (e2) in the oral composition of the present invention is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less.

[0036] From the viewpoint of effectively achieving both good adhesion and excellent dispersibility, the mass ratio of the content of component (E) to the content of component (D) ((E) / (D)) is preferably 7 or more, more preferably 10 or more, and preferably 40 or less, more preferably 30 or less, even more preferably 20 or less, and still more preferably 15 or less. The mass ratio of the content of component (E) to the content of component (D) ((E) / (D)) is preferably 7 to 40, more preferably 10 to 30, even more preferably 10 to 20, and still more preferably 10 to 15.

[0037] The oral composition of the present invention may further contain one or more surfactants selected from anionic surfactants, nonionic surfactants, and amphoteric surfactants, within the range that does not inhibit the effects of the present invention.

[0038] Specific examples of the anionic surfactant include one or more selected from alkyl sulfate ester salts such as sodium alkyl sulfate, acylamino acid salts such as sodium acyl glutamate and sodium acylsarcosine, N-methyl long-chain acyltaurate sodium salts such as sodium lauryl methyl taurine, alkyl phosphates such as sodium alkyl phosphate, higher fatty acid sulfonated monoglyceride salts, fatty acid ester salts of isethionic acid, and polyoxyethylene monoalkyl phosphates. Among these anionic surfactants, one or more selected from alkyl sulfate salts, acylamino acid salts, and N-methyl long-chain acyltaurine sodium salts are preferred. The content of such anionic surfactant in the oral composition of the present invention is preferably 0.1 mass% or more, more preferably 0.2 mass% or more, even more preferably 0.3 mass% or more, preferably 2 mass% or less, more preferably 1.5 mass% or less, and even more preferably 1 mass% or less.

[0039] Specific examples of the nonionic surfactant include one or more selected from polyoxyethylene derivatives such as polyoxyethylene hydrogenated castor oil, polyoxyalkyl allyl ether, polyoxyethylene distyrenated phenyl ether, and polyoxyethylene lanolin; polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, monocetyl glyceryl ether, polyoxyethylene stearyl ether, and polyoxyethylene oleyl ether; sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan monooleate, sorbitan sesquioleate, and sorbitan monostearate; polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, and polyoxyethylene sorbitan monooleate; polyoxyethylene sorbitol fatty acid esters such as polyoxyethylene sorbitan tetraoleate; polyethylene glycol fatty acid esters such as polyethylene glycol monolaurate and polyethylene glycol monooleate; alkyl glyceryl ethers such as isostearyl glyceryl ether; and glycerin fatty acid esters such as glyceryl monobehenate. Among these nonionic surfactants, polyoxyethylene derivatives and polyoxyethylene sorbitan fatty acid esters are preferred.

[0040] The content of such nonionic surfactant in the oral composition of the present invention is preferably 0.1 mass% or more, more preferably 0.3 mass% or more, even more preferably 0.5 mass% or more, preferably 2.5 mass% or less, more preferably 2 mass% or less, and even more preferably 1.5 mass% or less.

[0041] The oral cavity composition of the present invention may further contain a fluoride, which is a compound containing a fluorine atom in its molecular structure, within the range that does not impair the effects of the present invention. Examples of such fluorides include one or more selected from fluoride ion supplying compounds such as sodium fluoride, stannous fluoride, potassium fluoride, zinc fluoride, betaine fluoride, stannous alanine fluoride, sodium fluorosilicate, and hexylamine fluoride; and fluorine-containing compounds such as monofluorophosphate ion supplying compounds. Among these, sodium fluoride, stannous fluoride, and sodium monofluorophosphate are preferred.

[0042] The content of the fluoride in the oral cavity composition of the present invention is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, preferably 1.5% by mass or less, and more preferably 1% by mass or less. In particular, when the fluoride is a fluoride ion supplying compound, the content of the fluoride ion supplying compound in the oral cavity composition of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, preferably 0.2% by mass or less, and more preferably 0.1% by mass or less.

[0043] In addition to the above components, the oral cavity composition of the present invention preferably contains a pH adjuster from the viewpoint of easily adjusting the oral cavity composition of the present invention to an appropriate range and effectively exerting the desired effect. Such pH adjusters include one or more selected from carbonates and bicarbonates; potassium hydroxide and sodium hydroxide; and organic acids such as citric acid, malic acid, lactic acid, tartaric acid, and succinic acid, or salts thereof. Among them, one or more selected from potassium hydroxide, sodium hydroxide, organic acids, or salts thereof are preferred.

[0044] The oral composition of the present invention may contain, in addition to the above-mentioned components, bactericides such as cetylpyridinium chloride and benzethonium chloride; medicinal ingredients such as tocopherol acetate, glycyrrhetinic acid and dipotassium glycyrrhizinate; sweeteners such as sodium saccharin; water-insoluble organic powders such as powdered cellulose; fragrances; colorants, etc., within the scope of not impairing the effects of the present invention. EXAMPLES

[0045] The present invention will now be described in detail with reference to the following examples. In the tables, the content of each component is expressed as mass % unless otherwise specified.

[0046] [Examples 1 to 12, Comparative Examples 1 to 3] Each oral composition was prepared according to the formulation shown in Table 1. Then, using the obtained oral composition, each measurement and evaluation was carried out according to the following methods. The results are shown in Table 1.

[0047] Evaluation of adhesion and dispersibility 1 g of the obtained oral composition was placed on a toothbrush, and the teeth were brushed for 1 minute. The adhesion at the start of brushing and the dispersibility at the end of brushing were evaluated sensorily according to the following criteria. The sensory evaluation was carried out by two expert panelists, and the average scores were calculated. The average scores were applied to the following evaluation criteria to provide an index for evaluating the adhesion and dispersibility. The results are shown in Table 1.

[0048] Sensory evaluation score for adhesion 1 point: Strong adhesion to teeth, etc. 2 points: Somewhat felt like it adhered to teeth, etc. 3 points: Neither 4 points: Did not feel much adhesion to teeth, etc. 5 points: No adhesion to teeth, etc.

[0049] Sensory evaluation score for dispersibility 1 point: Dispersed quickly throughout the oral cavity without being unevenly distributed 2 points: Dispersed fairly quickly throughout the oral cavity without being unevenly distributed 3 points: Neither 4 points: The powder was unevenly distributed in the oral cavity and was not dispersed well. 5 points: uneven distribution in the oral cavity and not dispersed

[0050] Evaluation criteria AA: The average score is less than 2 points A: The average score is between 2 and 3 points. B: The average score is between 3 and 4 points. Z: The average score is 4 or more points.

[0051] [Table 1]

Claims

1. The following components (A), (B), (C), and (D): (A) A sugar alcohol having 9 or more hydroxyl groups in its molecular structure. (B) Binder (C) Water (D) Silicon dioxide SiO ２ Converted to 0.01% by mass or more and 6% by mass or less and the content of water-insoluble inorganic powders other than component (D) is less than 40 mass%.

2. 2. The oral composition according to claim 1, wherein the mass ratio ((C) / (A)) of the content of component (C) to the content of component (A) is 1 or more and 30 or less.

3. 3. The oral composition according to claim 1, wherein the content of component (A) is 3% by mass or more and 40% by mass or less.

4. The oral composition according to any one of claims 1 to 3, wherein component (B) comprises a cellulose-based binder.

5. 5. The oral composition according to claim 4, wherein the cellulose-based binder is carboxymethyl cellulose.

6. 6. The oral composition according to claim 1, wherein the content of component (B) is 1% by mass or more and 5% by mass or less.

7. 2. The oral composition according to claim 1, wherein the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is 0.05 or more and 0.3 or less.

8. The oral composition according to any one of claims 1 to 7, further comprising one or more alcohols (E) selected from sugar alcohols having 8 or less hydroxyl groups in their molecular structure and polyhydric alcohols having 8 or less hydroxyl groups in their molecular structure.

9. Silicon dioxide having an oil absorption of less than 160 mL / 100 g is used as component (D) SiO ２ Of the total converted amount, SiO ２ The oral composition according to any one of claims 1 to 8, wherein the amount of the component (I) is 45% by mass or more.

Images