JP7796599B2 - Oral composition - Google Patents

Description

The present invention relates to an oral composition.

The adhesion of various types of stains, such as plaque, to tooth surfaces can lead to tooth decay and periodontal disease. For this reason, oral compositions containing various granules have been developed to effectively enhance the ability to remove such stains.

For example, Patent Document 1 discloses an oral composition containing a water-soluble metaphosphate and further blended with abrasive silica or silica granules, in an attempt to make the tooth surface feel smooth and enhance the cleaning sensation. Furthermore, Patent Document 2 discloses a dentifrice containing wet-process silica granules with a specific particle size, disintegration strength, and abrasive power, which enhances awareness of the aesthetic effect of the granules and their stain-removing effect due to the feel of the granules in the oral cavity.

Japanese Patent Application Laid-Open No. 2022-000420 Japanese Patent Application Laid-Open No. 2004-250456

Although the granules enhance the stain-removing ability of these oral compositions, they can also cause a dry feeling in the oral cavity or an excessively powdery, gritty feel, which can reduce the comfort of use. Furthermore, although many of these oral compositions contain flavorings to impart a desired flavor, the presence of granules tends to reduce the flavor.
However, in none of the above patent documents has sufficient consideration been given to ensuring the flavor of the flavoring while suppressing the occurrence of unwanted textures such as a powdery and gritty texture caused by granules, and there is still room for improvement.

The present invention therefore relates to an oral composition that exhibits excellent stain removal capabilities through the granules, while suppressing the occurrence of unwanted sensations and effectively exhibiting the flavor of the fragrance.

The inventors therefore conducted extensive research to solve the above-mentioned problems, and as a result discovered an oral composition that contains water, high-moisture silica granules, and a specific flavoring, with the silica granules and water in a specific mass ratio, which allows users to experience the excellent stain-removing ability of the granules while suppressing the occurrence of unwanted tactile sensations, resulting in a comfortable feel when used, and also effectively bringing out the flavor of the flavoring.

That is, the present invention provides a composition comprising the following components (A) and (B):
(A) Silica granules having a moisture content of 50% or more and 80% or less; (B) one or more fragrances represented by the following formula (1):

In formula (1), ^R1 and ^R2 each independently represent a hydrogen atom, an aldehyde group, a carboxy group, an alkoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms. However, when ^R1 or ^R2 is an alkyl group having 2 or more carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group.
^R3 represents a hydrogen atom, a hydroxyl group, or an alkoxy group.
An oral composition comprising:
The oral composition has a mass ratio ((W)/(A)) of the total water content (W) contained in the oral composition to the content of component (A) of 2.5 or more and 9.5 or less.

The oral composition of the present invention effectively removes stains that accumulate or adhere not only to the surface of the teeth but also to narrow areas such as the spaces between teeth and adjacent areas, while suppressing the onset of a dry or powdery feeling in the oral cavity, providing a comfortable feel with an excellent cleaning sensation accompanied by a pleasant granular texture, and also effectively bringing out the flavor of the fragrance.

The present invention will be described in detail below.
In the present invention, "comfortable feel when used" means that granules can be felt in the mouth (hereinafter also referred to as "granular feel"), and that, together with this granular feel, a real feeling is obtained in which dirt that has accumulated or adhered not only to the surface of the teeth but also to narrow areas such as the gaps between teeth and adjacent areas has been removed (hereinafter also referred to as "clean feeling"), and that the feeling of dryness in the mouth and the powdery, gritty feel of granular texture (hereinafter also referred to as "the onset of unwanted feelings") are suppressed.
Furthermore, "flavor development" means that the sensation of the flavor derived from the flavoring agent spreading in the mouth is obtained.

The oral composition of the present invention contains, as component (A), silica granules with a moisture content of 50% or more and 80% or less. In the present invention, the inclusion of such high-moisture silica granules (A) provides a good granular feel and a strong cleaning sensation, while contributing to maintaining a specific mass ratio (described below) between the granules and the total moisture content (W) contained in the oral composition of the present invention, allowing the flavor of the specific flavoring (B) to be effectively developed, making it possible to achieve a good flavor development while imparting a pleasant feel when used.

The water content of component (A) is 50% or more, preferably 55% or more, and 80% or less, preferably 75% or less.
The water content (%) of component (A) refers to the value calculated by heating at 105°C for 2 hours, measuring the mass loss (b-loss), and using the mass (a) of component (A) before heating according to the following formula (x):
Moisture content (%) = {(b-loss)/(a)}×100...(x)

From the viewpoint of providing a good granular feel in the oral cavity and effectively enhancing the cleaning sensation, the disintegration strength of component (A) is preferably 3 gf/piece or more, more preferably 5 gf/piece or more, even more preferably 7 gf/piece or more, and preferably 20 gf/piece or less, more preferably 15 gf/piece or less, and even more preferably 10 gf/piece or less. The disintegration strength of component (A) is preferably 3 to 20 gf/piece, more preferably 5 to 15 gf/piece, and even more preferably 7 to 10 gf/piece.

The disintegration strength of component (A) is the load exerted when granules with a particle size (185-215 μm) are compressed at a loading rate of 1.51 gf/sec using a compression tester (Shimadzu Corporation, MCTM-500) and disintegrate. It is the average value measured for 10-20 granules, and is the strength in a wet state.

The average particle size of component (A) is preferably 100 μm or more, more preferably 150 μm or more, in order to ensure high stain removal performance by the granules. Furthermore, the average particle size of component (A) is preferably 300 μm or less, more preferably 250 μm or less, in order to effectively penetrate not only the surface of the teeth but also narrow areas such as the gaps between teeth and adjacent areas, thereby further enhancing stain removal performance.

The average particle size of granules refers to the 50% value of the cumulative weight distribution when particle size is measured by a sieving method, for example, using an ultrasonic sieve (Tsutsui Scientific Instruments Co., Ltd., program-controlled ultrasonic sieve SW-20AT).

The deformation rate of component (A) is preferably 35% or more, more preferably 40% or more, and even more preferably 45% or more, from the viewpoint of allowing for a high degree of freedom in deformation to easily conform to the shape of even narrow areas in the oral cavity and ensuring high stain removal performance. Furthermore, the deformation rate of component (A) is preferably 70% or less, more preferably 67% or less, and even more preferably 65% or less, from the viewpoint of effectively increasing the contact area between the granules and the tooth surface and thereby effectively enhancing stain removal performance. The deformation rate of component (A) is preferably 35-70%, more preferably 40-67%, and even more preferably 45-65%.

The deformation rate of component (A) is the displacement of a particle in the compression direction at the point when the granule collapses when a single wet granule is compressed at a load rate of 1.51 g/sec using a compression tester (MCTM-500, manufactured by Shimadzu Corporation) divided by the particle diameter before compression, and means the value calculated by the following formula (y):
Deformation rate (%) = (displacement in the compression direction at the time of collapse / particle diameter before compression) × 100 (y)
More specifically, the deformation rate is a value confirmed for 5 to 50 granules, calculated as a deformation rate (%) for each granule by {(particle diameter a-particle diameter b)/particle diameter a} x 100, where a is the particle diameter before compression and b is the length in the compression direction at the time when the granule collapses after compression.

The content of component (A) in the oral composition of the present invention is preferably 5% by mass or more, more preferably 5.5% by mass or more, and even more preferably 7% by mass or more, from the viewpoint of providing a high level of cleansing sensation while effectively exhibiting the flavor of component (B). Furthermore, the content of component (A) in the oral composition of the present invention is preferably 15% by mass or less, more preferably 11% by mass or less, and even more preferably 9% by mass or less, from the viewpoint of effectively suppressing the onset of unwanted sensations and providing a comfortable feel when used. Furthermore, the content of component (A) in the oral composition of the present invention is preferably 5% by mass or more and 15% by mass or less, more preferably 5.5 to 11% by mass, and even more preferably 7 to 9% by mass.

Component (A) can be produced, for example, by a wet gelation method using sodium silicate and sulfuric acid. Specifically, sodium silicate and sulfuric acid are mixed to produce a silica sol, which is then gelled to produce a silica hydrogel, and the resulting silica hydrogel is then adjusted in terms of its water content and classified.
More specifically, an aqueous solution of sodium silicate is first pumped into a mixing nozzle at a constant flow rate, and sulfuric acid is also pumped into the mixing nozzle at a constant flow rate. As a result, the aqueous solution of sodium silicate and sulfuric acid are stirred and mixed in the mixing nozzle to produce a silica sol, which then gels to obtain a silica hydrogel. To obtain a silica hydrogel by gelling the silica sol, the silica sol may be suspended or emulsified in a solvent and gelled in the suspension or emulsion, or the silica sol may be sprayed to form the silica hydrogel.

The resulting silica hydrogel is then subjected to a hydrothermal treatment, preferably in an alkaline aqueous solution at a temperature of 80° C. to 200° C. and a pH of 8.0 to 9.5.
Silica hydrogel that has been appropriately hydrothermally treated can be converted into component (A) by adjusting its hydration. Such adjustment of hydration can be performed using a box-type dryer, rotary dryer, fluidized-bed dryer, or flash dryer. The hydration can be adjusted at a temperature of 40 to 300°C for a treatment time of 1 second to 60 minutes, although this may vary depending on the type of equipment used. Alternatively, the hydration can be adjusted by uniformly contacting the silica hydrogel with an adsorbent such as silica xerogel using a fixed-container mixer, a rotary-container mixer, a fluid-motion mixer, or other equipment.

After adjusting the moisture content in this way, the silica granules of component (A) of the present invention can be obtained by appropriately using tumbling granulation, extrusion granulation, compression granulation, crushing granulation, stirring granulation, fluidized bed granulation, spray drying granulation, melt coagulation granulation, etc., followed by classification through a sieve.

The oral composition of the present invention contains, as component (B), one or more flavorings represented by the following formula (1):

In formula (1), ^R1 and ^R2 each independently represent a hydrogen atom, an aldehyde group, a carboxy group, an alkoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms. However, when ^R1 or ^R2 is an alkyl group having 2 or more carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group.
^R3 represents a hydrogen atom, a hydroxyl group, or an alkoxy group.
The oral composition of the present invention contains silica granules (A) with a high moisture content, and furthermore, is a composition in which such component (A) maintains a specific mass ratio with respect to the total moisture content (W) contained in the oral composition of the present invention, thereby enabling the flavor derived from these components (B) to be effectively and efficiently exhibited.
Although component (B) may be derived from a natural product, it is preferable to use a chemically synthesized component in order to effectively avoid impairing the development of a good flavor due to the presence of impurities.

From the viewpoint of effectively and efficiently exhibiting flavor, component (B) is preferably one or more fragrances in which ^R1 and ^R2 in formula (1) each independently represent a hydrogen atom, an aldehyde group, a methoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms (however, when ^R1 or ^R2 is an unsaturated alkyl group having 3 carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group), and ^R3 represents a hydrogen atom, a hydroxyl group, or a methoxy group.

More preferably, component (B) is one or more fragrances in which ^R1 in formula (1) represents an aldehyde group or an unsaturated alkyl group having 3 carbon atoms (provided that when ^R1 is an alkyl group, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group), and ^R2 and ^R3 each independently represent a hydrogen atom, a hydroxyl group, or a methoxy group.

Specific examples of component (B) represented by formula (1) include phenylpropanoids having one benzene ring and one to three substituents X bonded to carbon atoms constituting the benzene ring, where the substituents X have three or fewer carbon atoms, at least one of which is bonded to a carbon atom on the benzene ring via a carbon bond, and at least one of which contains an oxygen atom (however, the substituent X bonded to a carbon atom on the benzene ring via a carbon bond may also be a substituent containing an oxygen atom), and the total number of oxygen atoms contained in all of the substituents is two or fewer.

Specific examples of component (B) represented by formula (1) are preferably one or more selected from anethole, eugenol, anisaldehyde, cinnamic aldehyde, thymol, vanillin, benzoic acid, and benzaldehyde, more preferably one or more selected from anethole, eugenol, anisaldehyde, cinnamic aldehyde, and thymol, and even more preferably one or more selected from anethole, eugenol, anisaldehyde, and cinnamic aldehyde.

For example, anethole is a flavoring agent that imparts an anise-like aroma, and its content may vary depending on the desired flavor, but is preferably 0.0001 to 0.5% by mass, and more preferably 0.0004 to 0.24% by mass in the oral composition of the present invention.
Eugenol is a flavoring agent that imparts a clove-like spicy aroma, and its content may vary depending on the desired flavor, but is preferably 0.00001 to 0.25% by mass, more preferably 0.00002 to 0.14% by mass in the oral composition of the present invention.
Anisaldehyde is a fragrance that imparts a mimosa-like scent, and its content may vary depending on the desired flavor, but is preferably 0.0001 to 0.1% by mass, and more preferably 0.0003 to 0.06% by mass in the oral composition of the present invention.
Cinnamic aldehyde is a fragrance that imparts a balsamic scent, and its content may vary depending on the desired flavor, but is preferably 0.000001 to 0.05% by mass, and more preferably 0.000002 to 0.03% by mass in the oral composition of the present invention.
Thymol is a flavoring agent that imparts a thyme-like spicy aroma, and its content may vary depending on the desired flavor, but is preferably 0.00005 to 0.2% by mass, and more preferably 0.0001 to 0.1% by mass in the oral composition of the present invention.

From the viewpoint of effectively achieving a good flavor release, the total content of component (B) in the oral composition of the present invention is preferably 0.0001% by mass or more, more preferably 0.0002% by mass or more, even more preferably 0.0005% by mass or more, still more preferably 0.005% by mass or more, and even more preferably 0.008% by mass or more. Furthermore, the total content of component (B) is preferably 1% by mass or less, more preferably 0.8% by mass or less, even more preferably 0.5% by mass or less, still more preferably 0.3% by mass or less, and even more preferably 0.2% by mass or less. The total content of component (B) in the oral composition of the present invention is preferably 0.0001% by mass or more and 1% by mass or less, more preferably 0.0002 to 0.8% by mass, even more preferably 0.0005 to 0.5% by mass, still more preferably 0.005 to 0.3% by mass, and even more preferably 0.008 to 0.2% by mass.

From the viewpoint of effectively bringing out the flavor of component (B) and effectively achieving both a pleasant feel in use and good flavor development, the mass ratio of the content of component (A) to the content of component (B) ((A)/(B)) is preferably 10 or more, more preferably 20 or more, even more preferably 40 or more, still more preferably 100 or more, still more preferably 500 or more, preferably 10,000 or less, more preferably 5,000 or less, and even more preferably 1,000 or less. The mass ratio of the content of component (A) to the content of component (B) ((A)/(B)) is preferably 10 or more and 10,000 or less, more preferably 20 to 5,000, even more preferably 40 to 1,000, still more preferably 100 to 1,000, and even more preferably 500 to 1,000.

The oral composition of the present invention contains water. Therefore, the total amount of water (W) contained in the oral composition of the present invention means the total amount of water contained in the oral composition, including not only the purified water and the like blended in the oral composition, but also the water contained in each of the blended components, i.e., the water contained in component (A). By adjusting the total amount of water contained in the oral composition while maintaining a specific mass ratio with component (A) described below, it is possible to effectively achieve both the pleasant feel of use provided by component (A) and the development of a good flavor.

The total water content (W) contained in the oral composition of the present invention is preferably 25% by mass or more, more preferably 28% by mass or more, even more preferably 30% by mass or more, still more preferably 33% by mass or more, still more preferably 35% by mass or more, preferably 60% by mass or less, more preferably 56% by mass or less, even more preferably 54% by mass or less, still more preferably 52% by mass or less, and even more preferably 50% by mass or less. The total water content (W) contained in the oral composition of the present invention is preferably 25% by mass or more and 60% by mass or less, more preferably 28% by mass or more and 56% by mass or less, even more preferably 30% by mass or more and 54% by mass or less, still more preferably 33 to 52% by mass, and even more preferably 35 to 50% by mass.

The total water content (W) contained in the oral composition of the present invention can be calculated from the amount of water contained in the blend, such as purified water, and the amount of water contained in the blended ingredients, such as component (A), but it can also be measured using a Karl Fischer moisture meter, for example. A trace moisture analyzer (manufactured by Hiranuma Sangyo Co., Ltd.) can be used as the Karl Fischer moisture meter. With this device, 5 g of the oral composition can be suspended in 25 g of anhydrous methanol, and 0.02 g of this suspension can be taken to measure the total water content (W).

The mass ratio ((W)/(A)) of the total water content (W) to the content of component (A) in the oral composition of the present invention is 2.5 or more, preferably 3 or more, more preferably 3.5 or more, even more preferably 4.2 or more, still more preferably 5 or more, 9.5 or less, preferably 9 or less, more preferably 8.5 or less, even more preferably 7.5 or less, and still more preferably 7 or less, from the viewpoint of effectively achieving both a comfortable feel in use and a good flavor development, and particularly from the viewpoint of effectively suppressing the occurrence of unwanted tactile sensations. The mass ratio ((W)/(A)) of the total water content (W) to the content of component (A) in the oral composition of the present invention is 2.5 or more and 9.5 or less, preferably 3 to 9, more preferably 3.5 to 8.5, even more preferably 4.2 to 7.5, and even more preferably 5 to 7.

From the viewpoint of effectively and efficiently achieving a good flavor while providing a comfortable feel when used, the mass ratio ((W)/(B)) of the total water content (W) to the content of component (B) in the oral composition of the present invention is preferably 100 or more, more preferably 200 or more, even more preferably 500 or more, even more preferably 1000 or more, even more preferably 2500 or more, preferably 10000 or less, more preferably 8000 or less, more preferably 6000 or less, and even more preferably 4850 or less. Furthermore, the mass ratio ((W)/(B)) of the total water content (W) to the content of component (B) in the oral composition of the present invention is preferably 100 to 10000, more preferably 200 to 8000, even more preferably 500 to 6000, still more preferably 1000 to 4850, and even more preferably 2500 to 4850.

It is preferable that the oral composition of the present invention further contains carboxymethyl cellulose or a salt thereof (D) in order to ensure good storage stability and effectively achieve both a pleasant feel in use and a good flavor development.
The content of component (D) in the oral composition of the present invention is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, even more preferably 1% by mass or more, and preferably 4% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. The content of component (D) in the oral composition of the present invention is preferably 0.5 to 4%, more preferably 0.8 to 3% by mass, and even more preferably 1 to 2% by mass.

From the viewpoint of effectively achieving both a pleasant and comfortable feel while exhibiting a good flavor, the mass ratio of the content of component (A) to the content of component (D) ((A)/(D)) is preferably 3 or more, more preferably 4 or more, even more preferably 5 or more, and preferably 12 or less, more preferably 10 or less, even more preferably 9.5 or less, and even more preferably 8 or less. The mass ratio of the content of component (A) to the content of component (D) ((A)/(D)) is preferably 3 to 12, more preferably 4 to 10, even more preferably 5 to 9.5, and even more preferably 5 to 8.

In order to more fully exert its stain-removing ability, the oral composition of the present invention may contain abrasive silica having an oil absorption of 50 to 150 mL/100 g. The content of such abrasive silica in the oral composition of the present invention is preferably 2 to 15% by mass, more preferably 5 to 10% by mass.
In the present invention, powder in the range of less than 50 μm is considered an abrasive, and is distinguished from "granules" such as component (A) used in the present invention.

In addition to the above components, the oral composition of the present invention may contain, as appropriate, the following ingredients within the scope of the present invention: fragrances other than the above-mentioned component (B), such as those described in "Perfume and Flavor Chemicals" edited by Steffen Arctander, Montclair, N.J. (U.S.A.) (1969); "Synthetic Fragrances - Chemistry and Product Knowledge" edited by the Synthetic Fragrances Editorial Committee (The Chemical Daily, December 20, 2016, revised and expanded edition); and "Fundamentals of Fragrances and Fragrance Blending" edited by Mototaka Nakajima, Sangyo Tosho (1995 first edition); anionic surfactants such as alkyl sulfate ester salts, alkyl sulfonates, and acylamino acid salts, and other surfactants; bactericides; sugar alcohols such as sorbitol and erythritol; humectants such as glycerin, propylene glycol, and polyethylene glycol; preservatives; medicinal ingredients and other active ingredients; and pigments, etc.

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

[Preparation of Silica Granules X]
As granules of component (A), silica granules X were prepared by the wet gelation method using sodium silicate and sulfuric acid as described above.
Specifically, an aqueous solution of sodium silicate was first pumped into a mixing nozzle at a constant flow rate, and sulfuric acid was also pumped into the mixing nozzle at a constant flow rate. The aqueous solution of sodium silicate and sulfuric acid were stirred and mixed in the mixing nozzle to produce a silica sol, which was then gelled to obtain a silica hydrogel. The silica hydrogel was then subjected to water content adjustment and classification to obtain silica granules X.
The water content of silica granules X measured by the above method using formula (x) was 60%, the disintegration strength was 7 g/granule, the average particle size was 200 μm, and the deformation rate was 48%.

[Preparation of Silica Granules Y]
According to the manufacturing method described in JP 2011-11998 A, an aqueous slurry, which is a mixture containing silica, sodium hydroxide, cellulose, and water, was subjected to spray drying to obtain silica granules Y (silica content: 94% by mass, cellulose content: 5% by mass, sodium hydroxide content: 1% by mass).
The water content of silica granules Y measured by the above method using formula (x) was 3%, the disintegration strength was 7 g/granule, the average particle size was 200 μm, and the deformation rate was 3%.

[Examples 1 to 9, Comparative Examples 1 to 4, Comparative Examples 5-1 to 5-2, Comparative Examples 6 to 9]
Using the obtained silica granules X or silica granules Y, oral compositions were obtained according to the formulations shown in Tables 1 and 2.
Next, each evaluation was carried out according to the following methods.
The results are shown in Tables 1 and 2.

<Evaluation of Usability and Flavor>
The subjects were then brushed for 1 minute with 1 g of the oral composition on a toothbrush. Four expert panelists evaluated the oral feel (granular feel and unwanted feel) and flavor release from the beginning to the end of the brushing in accordance with the following criteria, and the average values were calculated.
In addition, the lower the values for all evaluation items, the more comfortable the feel of use is with an excellent granular feel and with unnecessary feel suppressed, and the more effectively the flavor can be brought out.

- Evaluation of granular feel 1: There is a strong granular feel 2: There is a slight granular feel 3: There is not much granular feel 4: There is no granular feel

Evaluation of unwanted texture (rough texture) 1: No rough texture 2: Very little rough texture 3: Somewhat rough texture 4: Some rough texture

- Evaluation of flavor development 1: The flavor spread is clearly felt 2: The flavor spread is felt 3: The flavor spread is felt somewhat 4: The flavor spread is not felt very much

According to the above results, Examples 1 to 6, which are oral compositions of the present invention, showed lower values in all evaluation items than Comparative Examples 1 to 6, which used low-moisture content silica granules Y. In other words, it can be seen that Examples 1 to 6, like Examples 7 to 9, effectively exhibit flavor development while imparting a comfortable feel to the mouth.
On the other hand, it can be seen that Comparative Example 5-1, which uses silica granules X having a high moisture content but contains only a flavoring (menthol) other than component (B), shows no difference in flavor release compared to Comparative Example 5-2, which uses silica granules Y having a low moisture content.

Claims (7)

The following components (A) and (B):
(A) Silica granules having a moisture content of 50% or more and 80% or less; (B) one or more fragrances represented by the following formula (1):
In formula (1), ^R1 and ^R2 each independently represent a hydrogen atom, an aldehyde group, a carboxy group, an alkoxy group, or a saturated or unsaturated alkyl group having 1 to 3 carbon atoms. However, when ^R1 or ^R2 is an alkyl group having 2 or more carbon atoms, the terminal carbon atom of the alkyl group may constitute the carbon atom of the aldehyde group.
^R3 represents a hydrogen atom, a hydroxyl group, or an alkoxy group.
An oral composition comprising:
An oral composition in which the mass ratio ((W)/(A)) of the total water content (W) contained in the oral composition to the content of component (A) is 2.5 or more and 9.5 or less. The oral composition according to claim 1, wherein the mass ratio ((A)/(B)) of the content of component (A) to the content of component (B) is 10 or more and 10,000 or less. The oral composition according to claim 1 or 2, wherein the content of component (A) is 5% by mass or more and 15% by mass or less. 3. The oral composition according to claim 1 , wherein the content of component (B) is 0.0001% by mass or more and 1% by mass or less. 3. The oral composition according to claim 1 , wherein the component (A) has a disintegration strength of 3 gf/piece or more and 20 gf/piece or less. 3. The oral composition according to claim 1 , wherein the average particle size of component (A) is 100 μm or more and 300 μm or less. 3. The oral composition according to claim 1 or 2, further comprising carboxymethylcellulose or a salt thereof (D), and wherein the mass ratio ((A)/(D)) of the content of component (A) to the content of component (D) is 3 or more and 12 or less.