Oral components

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

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

Background Art

[0002] Sugar alcohols in which the carbonyl group of a saccharide has been converted to a hydroxy group are known to have various physical properties depending on their 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, water, methylcellulose, trehalose, etc. in specific amounts, and attempts to suppress a decrease in viscosity under high-temperature storage conditions and ensure good shape retention. Also, Patent Document 2 discloses an oral composition containing a sugar alcohol mixture containing a large amount of xylitol, a specific amount of polyethylene glycol, and water, and aims to stabilize the composition by suppressing crystal precipitation of xylitol. Furthermore, Patent Document 3 discloses a dentifrice composition containing erythritol having a specific particle size, water, glycerin, etc. in specific amounts, and suppresses crystal growth of erythritol and enhances storage stability.

Prior Art Documents

Patent Documents

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Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, since these oral compositions are gradually diluted by saliva over time after being applied to the oral cavity, their original physical properties and functions are gradually weakened, and as a result, the desired effect may not be fully achieved. However, none of the above-mentioned patent documents have considered the effect of saliva dilution on the composition after application in the oral cavity, and the inventors have noticed that there is room for improvement.

[0006] Therefore, the present invention relates to an oral composition that, 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] Therefore, after various studies, the inventors discovered that by limiting the content of water-insoluble inorganic powders, while containing a binder, water, and a specific amount of silicon dioxide along with a sugar alcohol having a specific number of hydroxyl groups in its molecular structure, an oral composition can be obtained that adheres well to the oral cavity immediately after application and exhibits excellent dispersibility even as it is gradually diluted.

[0008] In other words, the present invention comprises the following components (A), (B), (C), and (D): (A) Sugar alcohols having 9 or more hydroxyl groups in their molecular structure (B) Binding agent (C)Water (D) Silicon dioxide: 0.01% to 6% by mass (in terms of SiO2 equivalent) The present invention provides an oral composition containing (D) and having an oral composition in which the content of water-insoluble inorganic powders other than component (D) is less than 40% by mass. [Effects 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, allowing the composition to effectively remain in the oral cavity. Furthermore, as the composition is gradually diluted by saliva in the oral cavity, it disperses evenly and uniformly, allowing the composition to spread throughout the entire oral cavity. Therefore, by including active ingredients such as antiseptics and medicinal components in the oral composition of the present invention, it becomes possible to effectively and efficiently exert the desired effects of such active ingredients. [Modes for carrying out the invention]

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

[0011] The oral composition of the present invention contains a sugar alcohol as component (A) having 9 or more hydroxyl groups in its molecular structure. By including such component (A), the adhesion to teeth, etc., mainly provided by component (B) described later, and the highly uniform dispersion, mainly provided by component (C) described later, can be exhibited with a time lag as dilution by saliva progresses. That is, with components (B) and (C) present in the oral composition of the present invention, the numerous hydroxyl groups present in the intervening component (A) act as a buffer, allowing for good adhesion in the initial stage when applied to the oral cavity, and then excellent dispersibility as it is gradually diluted by saliva.

[0012] Component (A) specifically includes, for example, one or more selected from maltitol, reduced palatinose, lactitol, maltotriitol, isomalttriitol, maltoteryl, and isomaltoteteryl. Among these, one or two selected from maltitol and reduced palatinose are preferred, with maltitol being more preferred, from the viewpoint of enabling the development of good adhesion and excellent dispersibility with a time delay in response to dilution by saliva.

[0013] The content of component (A) in the oral 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 in the initial stage and effectively demonstrating excellent dispersibility as it is diluted by saliva.

[0014] The oral composition of the present invention contains a binder as component (B). When the oral composition of the present invention is applied to the oral cavity, component (B) works in conjunction with components (A) and (D), etc. to exhibit good adhesion in the initial stage while avoiding excessive viscosity reduction, enabling the composition to effectively remain on teeth, etc., and also preventing the development of excellent dispersibility that occurs as a result of dilution by saliva. In this invention, the term "binder" also includes substances referred to as "viscosity modifiers."

[0015] Component (B) specifically includes, for example, cellulose-based binders such as sodium carboxymethylcellulose, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, and hydroxypropylmethylcellulose; polymer-based binders such as carboxyvinyl polymer and acrylic acid / (meth)acrylate alkyl copolymer; and one or more selected from 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 initial stages after application to the oral cavity, it is preferable that component (B) contains a cellulose-based binder, and it is more preferable that such cellulose-based binder is sodium carboxymethylcellulose.

[0016] The sodium carboxymethylcellulose preferably has a degree of etherification of 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 value determined by the ashing method, where three hydroxyl groups in one unit of cellulose are replaced with carboxymethyl groups (-CH2COONa).

[0017] From the perspective of exhibiting good adhesion at the initial stage when applied in the oral cavity, the content of component (B) in the oral composition of the present invention is preferably 1% by mass or more, more preferably 2% by mass or more, still more preferably 2.5% by mass or more, preferably 5% by mass or less, more preferably 4.5% by mass or less, and still more preferably 4% by mass or less. And the content of component (B) in the oral composition of the present invention is preferably 1% by mass or more and 5% by mass or less, more preferably 2 - 4.5% by mass, and still more preferably 2.5 - 4% by mass.

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

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

[0020] The oral composition of the present invention contains water as component (C). The water of such component (C) means all the water contained in the oral composition, including not only purified water etc. blended in the oral composition but also the moisture contained in each blended component.

[0021] 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, from the viewpoint of ensuring uniform solubility or dispersibility of each component while enabling both the development of good adhesion and the subsequent development of excellent dispersibility of the composition.

[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 it can also be measured using a Karl Fischer moisture meter, for example. As a Karl Fischer moisture meter, for example, a trace moisture analyzer (manufactured by Hiranuma Sangyo Co., Ltd.) can be used. With this device, 5g of the oral composition can be taken, suspended in 25g of anhydrous methanol, and 0.02g of this suspension can be taken out to measure its moisture content.

[0023] The mass ratio ((C) / (A)) of the content of component (C) to the content of component (A) is preferably 1 or more, more preferably 1.5 or more, even more preferably 1.8 or more, preferably 30 or less, more preferably 20 or less, and even more preferably 10 or less, from the viewpoint of effectively achieving both good adhesion and excellent dispersibility through the interposition of component (A), which has a hydroxyl group in its molecule. Furthermore, the mass ratio ((C) / (A)) of the content of component (C) to the content of component (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 higher, more preferably 0.07 or higher, more preferably 0.3 or lower, and more preferably 0.2 or lower, from the viewpoint of effectively exhibiting good adhesion in the initial stages after application to the oral cavity and not inhibiting the subsequent development of excellent dispersibility. Furthermore, the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.05 or higher and 0.3 or lower, and more preferably 0.07 to 0.2.

[0025] The oral composition of the present invention contains silicon dioxide as component (D) in an amount of 0.01% to 6% by mass in terms of SiO2. With such component (D) as the main component, when the oral composition of the present invention is applied to the oral cavity, it does not hinder the development of good adhesion in the initial stage, and then develops excellent dispersibility as it is diluted by saliva. In this invention, "silicon dioxide" means a compound that contains SiO2 in its composition, including compounds that contain not only SiO2 but also Na2O, K2O, or H2O. Furthermore, in this invention, "silicon dioxide content" refers to a value in terms of SiO2 equivalent.

[0026] Component (D) specifically includes, for example, one or more selected from silicic acid or its salts such as sodium silicate, potassium silicate, and sodium metasilicate; anhydrous silicic acid such as abrasive silica and thickening silica; and silica hydrogel, as well as amorphous silica, precipitated silica, or amorphous precipitated silica.

[0027] In particular, it is preferable to include silicon dioxide with an oil absorption capacity of less than 160 mL / 100 g as component (D). More specifically, the amount of silicon dioxide with an oil absorption capacity of less than 160 mL / 100 g included is preferably 45% by mass or more, more preferably 55% by mass or more, and even more preferably 65% ​​by mass or more, in terms of SiO2 equivalent, of the total amount of silicon dioxide in component (D) in terms of SiO2 equivalent. There is no particular upper limit, but it may be 80% by mass or less, or 90% by mass or less, and is more preferably 100% by mass. In this invention, "oil absorption capacity" refers to the amount of oil that silicon dioxide can support, and the measurement method is the method specified in JIS K5101-13-2 (established in 2004), meaning a value determined by the amount of boiled senna oil absorbed.

[0028] From the viewpoint of exhibiting excellent dispersibility with saliva dilution following the development of good adhesion, the content of component (D) in the oral 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, and 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. Furthermore, the content of component (D) in the oral composition of the present invention is 0.01% by mass or more and 6% by mass or less in terms of SiO2 equivalent, preferably 0.05 to 6% by mass, more preferably 0.15 to 6% by mass, even more preferably 1 to 5.5% by mass, even more preferably 1.5 to 5% by mass, even more preferably 2.5 to 4.5% by mass, and even more preferably 3 to 4% by mass.

[0029] In the oral composition of the present invention, the content of water-insoluble inorganic powders other than component (D) is less than 40% by mass. If water-insoluble inorganic powders other than component (D) are present in excessive amounts, there is a high risk that the development of adhesion in the initial stages after application to the oral cavity will be inhibited, and there is also a risk that the development of dispersibility will be excessively accelerated. Therefore, in the present invention, the content of such powders is limited. In this invention, "water-insoluble" means that the amount that dissolves in 100g of water (at 20°C) is 1g or less.

[0030] Examples of water-insoluble inorganic powders other than component (D) include, for example, one or more selected from calcium carbonate such as light calcium carbonate and heavy calcium carbonate, zeolite, calcium phosphate such as dicalcium phosphate, tricalcium 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 water-insoluble inorganic powders other than component (D).

[0032] The mass ratio ((D) / (A)) of the content of component (D) to the content of component (A) is preferably 0.005 or more, more preferably 0.03 or more, even more preferably 0.1 or more, preferably 10 or less, more preferably 5 or less, even more preferably 1 or less, and even more preferably 0.5 or less, from the viewpoint of effectively achieving both good adhesion and excellent dispersibility through the interposition of component (A), which has a hydroxyl group in its molecule. Furthermore, the mass ratio ((D) / (A)) of the content of component (D) to the content of component (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] From the viewpoint of effectively achieving both good adhesion in the initial stages after application to the oral cavity and excellent dispersibility thereafter, the oral composition of the present invention preferably further contains one or more alcohols (E) selected from sugar alcohols (e1) having 8 or fewer hydroxyl groups in their molecular structure and polyhydric alcohols (e2) having 8 or fewer hydroxyl groups in their molecular structure.

[0034] Specifically, component (e1) may include, for example, one or more selected from sorbitol, erythritol, and xylitol. Among these, one or two selected from sorbitol and erythritol are preferred. Specifically, component (e2) may include, for example, 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, even more preferably 34% by mass or more, 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. Furthermore, 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] The mass ratio ((E) / (D)) of the content of component (E) to the content of component (D) is preferably 7 or more, more preferably 10 or more, preferably 40 or less, more preferably 30 or less, even more preferably 20 or less, and even more preferably 15 or less, from the viewpoint of effectively achieving both good adhesion and excellent dispersibility. Furthermore, the mass ratio ((E) / (D)) of the content of component (E) to the content of component (D) is preferably 7 to 40, more preferably 10 to 30, even more preferably 10 to 20, and even 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, to the extent that they do not inhibit the effects of the present invention.

[0038] Examples of anionic surfactants include, for example, one or more selected from alkyl sulfate ester salts such as sodium alkyl sulfate, acyl amino acid salts such as sodium acyl glutamate and sodium acyl sarcosinate, N-methyl long-chain sodium acyl taurate salts such as sodium lauryl methyl taurate, 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 esters, acyl amino acid salts, and N-methyl long-chain acyl taurate sodium salts are preferred. The content of such anionic surfactant in the oral composition of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, preferably 2% by mass or less, more preferably 1.5% by mass or less, and even more preferably 1% by mass or less.

[0039] Examples of nonionic surfactants include, specifically, one or more selected from the following: 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% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, preferably 2.5% by mass or less, more preferably 2% by mass or less, and even more preferably 1.5% by mass or less.

[0041] The oral composition of the present invention may further contain fluoride compounds, which are compounds containing fluorine atoms in their molecular structure, to the extent that they do 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 fluoride content in the oral 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 such fluoride ion supplying compound in the oral 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-mentioned components, the oral composition of the present invention preferably contains a pH adjuster, from the viewpoint of easily adjusting it to an appropriate range and effectively exhibiting the desired effect. Examples of such pH adjusters include carbonates and bicarbonates; potassium hydroxide and sodium hydroxide; and one or more selected from organic acids such as citric acid, malic acid, lactic acid, tartaric acid, succinic acid, or salts thereof. Among these, 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, to the extent that it does not inhibit the effects of the present invention, other components besides the above-mentioned components, such as bactericides such as cetylpyridinium chloride and benzethonium chloride; pharmacoactive 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. [Examples]

[0045] The present invention will be described in detail below based on examples. Unless otherwise specified in the table, the content of each component is expressed in mass percent.

[0046] [Examples 1-12, Comparative Examples 1-3] Each oral composition was prepared according to the formulations shown in Table 1. Then, the obtained oral compositions were used for the following measurements and evaluations. The results are shown in Table 1.

[0047] Evaluation of adhesion and dispersion properties After placing 1 g of the obtained oral composition onto a toothbrush, teeth were brushed for 1 minute, and the adhesion at the start of brushing and the dispersibility at the end of brushing were evaluated sensorily according to the following criteria. Each sensory evaluation was conducted by two expert panelists, and the average of the resulting scores was calculated. This average was then applied to the evaluation criteria below to serve as the index for evaluating adhesion and dispersion, respectively. The results are shown in Table 1.

[0048] • Sensory evaluation score for adhesion 1 point: I felt a strong sense of adhesion to teeth, etc. 2 points: I felt it adhered somewhat well to teeth, etc. 3 points: Neither agree nor disagree 4 points: I didn't feel much adhesion to the teeth, etc. 5 points: I didn't feel any adhesion to my teeth or other body parts at all.

[0049] • Dispersive sensory evaluation score 1 point: It was rapidly dispersed throughout the entire oral cavity without being concentrated in one area. 2 points: Dispersed fairly quickly throughout the entire oral cavity without being concentrated in one area. 3 points: Neither agree nor disagree 4 points: Tends to be concentrated in the oral cavity and not very dispersed. 5 points: Predominantly located within the oral cavity and not dispersed.

[0050] • Evaluation criteria AA: Average score is less than 2 points. A: The average score is between 2 and 3 points. B: The average score of the results is 3 points or more but less than 4 points. Z: Average score of 4 points or higher

[0051] [Table 1]

Claims

1. The following components (A), (B), (C), and (D): (A) Sugar alcohols having 9 or more hydroxyl groups in their molecular structure (B) Binding agent (C) Water 25% by mass or more and 60% by mass or less (D) Silicon dioxide SiO ２ Converted amount: 0.01% by mass or more and 6% by mass or less An oral composition containing, wherein the content of water-insoluble inorganic powders other than component (D) is 30% by mass or less, and the mass ratio of the content of component (C) to the content of component (A) ((C) / (A)) is 1 or more and 30 or less.

2. The oral composition according to Claim 1, wherein the mass ratio ((D) / (A)) of the content of component (D) to the content of component (A) is 0.005 or more and 10 or less.

3. The oral composition according to claim 1 or 2, wherein the content of component (A) is 3% by mass or more and 40% by mass or less.

4. The oral composition according to claim 1 or 2, wherein component (B) comprises a cellulose-based binder.

5. The oral composition according to claim 4, wherein the content of the cellulose binder in component (B) is 50% by mass or more.

6. The oral composition according to claim 4, wherein the cellulose-based binder comprises sodium carboxymethylcellulose.

7. The oral composition according to claim 1 or 2, wherein the content of component (B) is 1% by mass or more and 5% by mass or less.

8. The oral composition according to claim 1 or 2, wherein the mass ratio ((A) / (B)) of the content of component (A) to the content of component (B) is 0.2 or more and 20 or less.

9. The oral composition according to claim 1 or 2, 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.

10. Furthermore, the oral composition according to claim 1 or 2, comprising one or more alcohols (E) selected from sugar alcohols (e1) having 8 or fewer hydroxyl groups in their molecular structure, and polyhydric alcohols (e2) having 8 or fewer hydroxyl groups in their molecular structure.

11. The oral composition according to claim 10, wherein the content of component (E) is 20% by mass or more and 45% by mass or less.

12. The oral composition according to claim 8, wherein the mass ratio ((E) / (D)) of the content of component (E) to the content of component (D) is 7 or more and 40 or less.

13. Silicon dioxide with an oil absorption capacity of less than 160 mL / 100 g is used as component (D) SiO ２ In the total converted amount, SiO ２ The oral composition according to claim 1 or 2, containing 45% by mass or more in converted amount.

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