JP2018104376A - Dentifrice composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dentifrice composition that has excellent cleanability without damaging teeth and gives a favorable brushing feeling.SOLUTION: A dentifrice composition contains, as water-insoluble powder, (A) silicic anhydride, (B) calcium carbonate, and (C) dibasic calcium phosphate. The total content of (A), (B), (C) components may be 10-60 mass% relative to the total amount of the dentifrice composition.SELECTED DRAWING: None

Description

  The present invention relates to a dentifrice composition.

  Toothpaste compositions usually contain powder raw materials such as abrasives in order to remove dirt and plaque on the tooth surface, and various inorganic components are known as abrasives. As an abrasive, it is desired to improve cleanability in order to remove dirt and plaque on the tooth surface while preventing the teeth from being damaged.

  For example, Patent Document 1 describes an invention relating to a dentifrice composition that is intended to exhibit high plaque removing ability or dirt removing ability without damaging teeth. Here, it is described that heavy calcium carbonate and abrasive silica having an RDA (Radioactive Dentine Abrasion) value and an average particle size within a predetermined range are blended as an abrasive in the dentifrice composition. By setting the abrasive silica to be blended to have an RDA value of a predetermined value or less, the cleaning property is improved while suppressing damage to the teeth.

JP 2015-117205 A

  By the way, the dentifrice composition is also required to respond to various palatability as consumer needs, and pursuing palatability is also an important development direction. For example, improving the refreshing feeling after dentifrice, coloring and flavoring the dentifrice composition to improve the feeling of use, or making it possible to associate the dentifrice effect from the comfort of brushing during dentifrice. It is done.

  Of these, in terms of making it possible to associate the effect of brushing with the feeling of brushing, for example, the dentifrice composition can be associated with a sense that it is effective against stains that are difficult to remove, such as stains and tobacco stains. There is a demand to provide a high level of brushing feeling by providing a heavy toothpaste. To give a heavy brushing feeling by giving a heavy toothbrushing feeling here is, for example, a feeling that feels heavy when applying the toothbrushing composition on the toothbrush, and the toothbrushing composition seems to stay on the toothbrush during toothbrushing It can be understood as a variety of sensations, such as a sensation that the toothpaste composition feels rough in the mouth, a sensation that the dentifrice composition feels powdery, and a sensation that the toothpaste composition is well polished after brushing. . And, by obtaining a high sense of brushing, it is possible to improve the consumer's satisfaction by realizing the fact that stubborn dirt that is difficult to remove, such as stains and cigarette stains, has been removed during brushing. .

  However, with conventional dentifrice compositions, it is not easy to suppress damage to the teeth, maintain sufficient cleanability, and obtain a high brushing feeling during dentifrice. The development of was not enough. Therefore, the current situation is that the needs of consumers are not fully met.

  The present invention has been made in order to solve the above-described conventional problems, and an object of the present invention is to provide a dentifrice composition that has excellent cleaning properties without damaging the teeth and that provides a high sense of brushing.

  In order to solve the above problems, the dentifrice composition of the present invention comprises at least (A) anhydrous silicic acid, (B) calcium carbonate, and (C) calcium hydrogen phosphate as a water-insoluble powder. .

In the said invention, it is preferable that the total content of said (A), (B), (C) component is 10-60 mass% in a dentifrice composition.
In the said invention, content of said (A) anhydrous silicic acid is 20 mass% or more with respect to the total content of said (A), (B), (C) component, The total of the content and the content of the (C) calcium hydrogen phosphate is preferably 30% by mass or more.

  In the said invention, with respect to the total content of said (A), (B), (C) component, the sum total of content of said (A) silicic acid and content of said (B) calcium carbonate is 90. The total of the content of the (B) calcium carbonate and the content of the (C) calcium hydrogen phosphate is preferably 30% by mass or less.

  In the said invention, content of said (A) anhydrous silicic acid is 20 mass% or more with respect to the total content of said (A), (B), (C) component, The content is preferably 40% by mass or less, and the content of the (C) calcium hydrogen phosphate is preferably 10% by mass or more.

In the said invention, it is preferable that mass ratio of content of the said (B) calcium carbonate and content of the said (C) calcium hydrogenphosphate is 1: 1-3: 1.
In the said invention, it is preferable that at least 1 sort (s) selected from sorbit, glycerin, and propylene glycol is contained as a wetting agent, and the sum total of the content of the said wetting agent in a dentifrice composition is 70 mass% or less.

  ADVANTAGE OF THE INVENTION According to this invention, while having the outstanding cleaning property, without damaging a tooth, the dentifrice composition from which a high brushing feeling is obtained can be provided.

Hereinafter, an embodiment embodying the dentifrice composition of the present invention will be described.
The dentifrice composition of this embodiment contains (A) anhydrous silicic acid, (B) calcium carbonate, and (C) calcium hydrogen phosphate as a water-insoluble powder, and further contains water. Also good.

  As the anhydrous silicic acid (silica) as the component (A), any amorphous silicic acid applicable to the dentifrice composition can be used. For example, it may be synthesized by dry process silica or may be synthesized by wet process silica, and may be abrasive silica or thickened silica. In these specific examples, only one kind may be used alone, or two or more kinds may be used in appropriate combination. The particle size is not particularly limited, and a particle size applicable to a normal dentifrice composition can be appropriately selected.

  Silicic anhydride is excellent in the ability to remove stains and plaque from the tooth surface, and is effective in improving the cleaning properties of the dentifrice composition. The lower limit of the content of silicic anhydride is preferably 20% by mass or more, more preferably 30% by mass or more with respect to the total content (100% by mass) of the water-insoluble powder, from the viewpoint of improving cleaning properties. It is more preferable. On the other hand, the upper limit of the content of silicic acid anhydride is 70% by mass or less based on the total content of the water-insoluble powder from the viewpoint of suppressing excessive polishing force and suppressing scratching of the tooth surface. Preferably, it is 60 mass% or less.

  As the calcium carbonate as the component (B), any calcium carbonate that can be applied to a dentifrice composition can be used. For example, light calcium carbonate and heavy calcium carbonate can be mentioned. In these specific examples, only one kind may be used alone, or two or more kinds may be used in appropriate combination. Since calcium carbonate has a large specific gravity, the specific gravity of the dentifrice composition can be increased by increasing the blending amount in the dentifrice composition.

  The lower limit of the content of calcium carbonate is preferably 5% by mass or more and more preferably 10% by mass or more with respect to the total content of the water-insoluble powder from the viewpoint of improving the brushing feeling. On the other hand, the upper limit of calcium carbonate is preferably 40% by mass or less, and 35% by mass with respect to the total content of the water-insoluble powder, from the viewpoint of suppressing excessive polishing force and suppressing scratching of the tooth surface. The following is more preferable.

  As calcium hydrogen phosphate as component (C), any calcium hydrogen phosphate that can be applied to a dentifrice composition can be used. For example, a commercially available product may be used. Calcium hydrogen phosphate has a large specific gravity like calcium carbonate, and the specific gravity of the dentifrice composition can be increased by increasing the blending amount in the dentifrice composition.

  The lower limit of the content of calcium hydrogen phosphate is preferably 10% by mass or more with respect to the total content of the water-insoluble powder, and is 15% by mass or more from the viewpoint of improving the brushing feeling of the dentifrice composition. More preferably. On the other hand, the upper limit of calcium hydrogen phosphate is preferably 40% by mass or less, and more preferably 30% by mass or less, based on the total content of the water-insoluble powder.

  Of these three components formulated as water-insoluble powders, (A) anhydrous silicic acid and (B) calcium carbonate both increase the content and tend to damage the tooth surface due to increased polishing power. It is an ingredient. Therefore, the total content of anhydrous silicic acid and calcium carbonate is preferably 90% by mass or less, and more preferably 85% by mass or less, with respect to the total content of the water-insoluble powder. By limiting to this range, excessive polishing force can be suppressed.

  Of these three components formulated as water-insoluble powders, (B) calcium carbonate and (C) calcium hydrogen phosphate together with (A) anhydrous silicic acid in a specific amount ratio, It can give a heavy brushing feeling and an excellent brushing feeling reminiscent of high cleanability. Therefore, the total content of calcium carbonate and calcium hydrogen phosphate is preferably 30% by mass or more and more preferably 40% by mass or more with respect to the total content of the water-insoluble powder. By setting this range, it is possible to improve the brushing feeling of the dentifrice composition.

  Furthermore, among (B) calcium carbonate and (C) calcium hydrogen phosphate, which contributes to improving the feeling of brushing, calcium carbonate tends to increase the polishing power when the blending amount is increased, while calcium hydrogen phosphate is , It has less polishing power than calcium carbonate and is excellent in safety. Therefore, among these two components that improve the brushing feeling, the ratio of calcium carbonate is kept within a predetermined range, and it is contained in a specific amount ratio together with anhydrous silicic acid, so that excellent cleaning feeling and tooth reminiscent of high cleanability can be recalled. It is possible to achieve both safety and safety. Specifically, the content of calcium carbonate, which is the ratio of calcium carbonate to calcium hydrogen phosphate: content of calcium hydrogen phosphate, is preferably in the range of 1: 1 to 3: 1. By setting it as this range, it is possible to impart an excellent brushing feeling reminiscent of high cleanability while suppressing the increase in the polishing power of the dentifrice composition and ensuring safety.

A dentifrice composition can be prepared as a toothpaste, a gel-like dentifrice, a liquid dentifrice etc. by containing bases, such as water, for example.
The dentifrice composition of this invention can mix | blend other well-known components in the range which does not impair the effect of this invention other than the said component.

  Specific examples of other water-insoluble powders other than the above components include phosphate abrasives other than calcium hydrogen phosphate such as tricalcium phosphate and calcium pyrophosphate, aluminum hydroxide, insoluble sodium metaphosphate, insoluble calcium metaphosphate, Examples thereof include magnesium phosphate, magnesium carbonate, zirconium silicate, hydroxyapatite, and polymethyl methacrylate. These water-insoluble powders may be used alone or in combination of two or more. The total content of the water-insoluble powder in the dentifrice composition containing the component (A), the component (B), the component (C) and these other water-insoluble powders is 10-60 of the entire dentifrice composition. It is preferable to set it as the mass%. By setting the water-insoluble powder in this range, it can be suitably used as a toothpaste. In addition, the numerical value of the mass% which shows content of the component in a dentifrice composition is a numerical value in a composition also including them, when using bases, such as water.

  Examples of components other than the water-insoluble powder include a wetting agent, a surfactant, a binder, a flavoring agent, an antiseptic, a medicinal component, a stabilizer, and a pH adjuster. Each of these components may be a known component blended in a dentifrice composition.

  Specific examples of the wetting agent include polyhydric alcohols such as sorbit, glycerin, ethylene glycol, propylene glycol, 1,3-brylene glycol, and polypropylene glycol. Although the compounding quantity of the wetting agent in the dentifrice composition can be set as appropriate, it is preferably, for example, 10 to 70% by mass. One type of wetting agent may be used alone, or two or more types of wetting agents may be used in appropriate combination.

  Specific examples of the surfactant include, for example, alkyl sulfates such as sodium lauryl sulfate, anionic interfaces such as polyoxyethylene alkyl ether sulfate, N-lauroyl taurine salt, lauroyl sarcosine salt, and α-olefin sulfonate. Activators, amphoteric surfactants such as fatty acid amidopropyldimethylaminoacetic acid betaine, fatty acid dimethylaminoacetic acid betaine, N-acylglutamate, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, polyoxyethylene alkyl Ether, alkyl glycoside, sucrose fatty acid ester, alkyl alkanolamide, polyoxyethylene sorbitan ester, polyoxyethylene polyoxypropylene glycol, polyglycerin fatty acid ester, polyoxy ester Nonionic surfactants such as alkylene hydrogenated castor oil. Although the compounding quantity of surfactant in a dentifrice composition can be set suitably, it is preferable that it is about 0.5-5 mass%, for example. Only one surfactant may be used alone, or two or more surfactants may be used in appropriate combination.

  Specific examples of the binder include sodium polyacrylate, carrageenan, sodium carboxymethylcellulose, sodium alginate, xanthan gum, hydroxyethylcellulose, hydroxypropylmethylcellulose, methylcellulose, propylene glycol alginate and the like. Although the compounding quantity of the binder in a dentifrice composition can be set suitably, it is preferable that it is 0.5-3 mass%, for example. As the binder, only one kind may be used alone, or two or more kinds may be used in appropriate combination.

  Specific examples of the flavoring agent include various flavors and sweetening ingredients. Specific examples of the fragrances include, for example, menthol, anethole, carvone, eugenol, limonene, peppermint oil, spearmint oil, wintergreen, methyl salicylate, cionel, thymol, clove oil, eucalyptus oil, sage oil, lemon oil , Orange oil, cymen oil, citronellol, methyl eugenol, water-soluble fragrances of various fragrances, and the like. Although the compounding quantity of the fragrance | flavor in a dentifrice composition can be set suitably, it is preferable that it is about 0.5-5 mass%, for example. A fragrance | flavor may be used individually by 1 type and can also be used in combination of 2 or more type as appropriate.

  Specific examples of the sweetening component include saccharin, sodium saccharin, sucralose, stevioside, acesulfame cam, aspartame, xylitol, maltitol, erythritol and the like. The compounding amount of the sweetening component can be set as appropriate, but the compounding amount of the sweetening component in the dentifrice composition can be set as appropriate, but is preferably about 0.01 to 15% by mass, for example. As the sweetening component, only one kind may be used alone, or two or more kinds may be used in appropriate combination.

  Specific examples of the preservative include bactericidal or antibacterial agents such as cetylpyridinium chloride, paraben, sodium benzoate, triclosan, chlorhexidine hydrochloride, triclosan, isopropylmethylphenol, benzalkonium chloride, and benzethonium chloride. Although the compounding quantity of the antiseptic | preservative in a dentifrice composition can be set suitably, it is preferable that it is about 0.001-5 mass%, for example. As the preservative, only one kind may be used alone, or two or more kinds may be used in appropriate combination.

  Specific examples of medicinal ingredients include, for example, bactericides such as cetylpyridinium chloride, triclosan, chlorhexidine hydrochloride, isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, sodium monofluorophosphate, sodium fluoride, stannous fluoride , Fluorides such as strontium fluoride, condensed phosphates such as sodium pyrophosphate and sodium polyphosphate, zeolites, phosphates such as sodium monohydrogen phosphate and trisodium phosphate, tranexamic acid, dipotassium glycyrrhizinate, glycyrrhizic acid Monoammonium, β-glycyrrhetinic acid, ε-aminocaproic acid, buckwheat extract, sodium chloride, aluminum lactate, strontium chloride, ascorbic acid, sodium ascorbate, pyridoxine hydrochloride, tocopherol Vitamins such as acetate esters, glucanase enzymes such as dextranase and mutanase, degrading enzymes such as protease and lysozyme, inorganic salts such as zinc chloride, zinc citrate, strontium chloride and potassium nitrate, chelates such as zeolite, chlorophyll and glycerophosphate Compound, polyethylene glycol which dissolves fat, and the like. The compounding quantity of the medicinal component in the dentifrice composition can be appropriately set within a range that does not interfere with the effect of the dentifrice composition. Only one type of medicinal component may be used alone, or two or more types may be used in appropriate combination.

  Specific examples of the stabilizer include forensic dyes such as Green No. 3, Blue No. 1, and Yellow No. 4. The compounding quantity of the stabilizer in a dentifrice composition can be suitably set in the range which does not prevent the dentifrice composition effect. Only one stabilizer may be used alone, or two or more stabilizers may be used in appropriate combination.

  Specific examples of the pH adjuster include, for example, citric acid, malic acid, lactic acid, tartaric acid, acetic acid, phosphoric acid, pyrophosphoric acid, glycerophosphoric acid, and various salts thereof such as potassium salt, sodium salt and ammonium salt, hydroxide Sodium etc. are mentioned. It is preferable that the dentifrice composition is adjusted so that the pH is in the range of 5 to 9, particularly 6 to 8, by blending a pH adjuster. The blending amount of the pH adjuster in the dentifrice composition can be appropriately set within a range that does not interfere with the effect of the dentifrice composition. Only one pH adjuster may be used alone, or two or more pH adjusters may be used in appropriate combination.

Next, the effect of the dentifrice composition of this embodiment will be described.
(1) The dentifrice composition of this embodiment contains (A) anhydrous silicic acid, (B) calcium carbonate, and (C) calcium hydrogen phosphate as a water-insoluble powder. Therefore, the dentifrice composition of the present embodiment is excellent in that it is excellent in cleanability without damaging the teeth, and in that it can provide an excellent brushing feeling reminiscent of high cleanability.

  (2) Among the components (A) to (C) blended as a water-insoluble powder, (A) anhydrous silicic acid and (B) calcium carbonate tend to increase the polishing power on the tooth surface as the content increases. It is in. Therefore, by setting the total content of (A) anhydrous silicic acid and (B) calcium carbonate relative to the total content of the water-insoluble powder to a predetermined value or less, excessive polishing power is suppressed and the safety to the teeth is improved. Can be secured.

  (3) Among the components (A) to (C) blended as a water-insoluble powder, (B) calcium carbonate and (C) calcium hydrogen phosphate increase the content in the dentifrice composition and dentifrice composition The specific gravity of the product is increased, and a thick brushing feeling can be imparted to the dentifrice composition. Therefore, by setting the total content of (B) calcium carbonate and (C) calcium hydrogen phosphate with respect to the total content of the water-insoluble powder to a predetermined value or more, it is possible to enhance the feeling of brushing.

  (4) Among (B) calcium carbonate and (C) calcium hydrogen phosphate that contributes to improving the feeling of brushing, (B) calcium carbonate tends to increase the polishing power as the blending amount increases. Therefore, the ratio of these two components that contribute to the specific gravity is within a predetermined range, and when included in a specific amount ratio together with silicic acid, excellent cleaning feeling reminiscent of high cleanability and safety of preventing damage to teeth. Can be made compatible.

In addition, you may change the said embodiment as follows.
-In the said embodiment, the (A)-(C) component should just be mix | blended in the dentifrice composition at the time of use, and the component which comprises a dentifrice composition at the time of a preservation | save may be divided and stored in multiple agents. . Further, the dentifrice composition may be stored as a solid agent such as a powder, and may be used by adding a base such as water at the time of use. Even in such a configuration, in addition to excellent cleanability and safety, it is possible to obtain an excellent cleaning feeling reminiscent of high cleanability.

The dentifrice composition of the present invention will be described in more detail based on the following test examples. In addition, this invention is not limited to the structure as described in the Example column.
[Test 1]
In Test 1, the cleaning properties and brushing feeling of the dentifrice composition were evaluated.

<Example 1>
A dentifrice composition of Example 1 was prepared according to the formulation shown in Table 1. In Table 1, the compounding density | concentration of each compounding component in a dentifrice composition is shown by the mass%.

Table 2 shows the blending amounts of (A) anhydrous silicic acid, (B) calcium carbonate, and (C) calcium hydrogen phosphate in the dentifrice compositions of Examples 1-4 and Comparative Examples 1-7. . In Table 2, each value of “(A) anhydrous silicic acid (%)”, “(B) calcium carbonate (%)”, and “(C) calcium hydrogen phosphate” is the value of each component in the dentifrice composition. The content is shown in mass%. The dentifrice compositions of Examples 2 to 4 and Comparative Examples 1 to 7 differ from the dentifrice composition of Example 1 only in the blending concentration of water-insoluble powder and purified water, and the other blending concentrations are as follows. This is the same as the prescription in Example 1 shown in Table 1. Specifically, in the dentifrice compositions of Examples 2 to 4 and Comparative Examples 1 to 7, compared with the dentifrice composition of Example 1, the total content (mass of water-insoluble powder in the dentifrice composition) (mass) %), And the increase / decrease is adjusted by the amount of purified water in the dentifrice composition.

  In addition, “(A) Calcium carbonate ratio”, “(B) Silica anhydride ratio”, “(C) Calcium hydrogen phosphate ratio” in each example and each comparative example shown in Table 2, “ (A) Calcium carbonate ratio + (C) Calcium hydrogen phosphate ”,“ (A) Calcium carbonate + (B) Silicic anhydride ”in each column is a blending ratio (%) with respect to the total content of the water-insoluble powder. Is shown.

The cleaning properties and brushing feelings of the dentifrice compositions of Examples 1 to 4 and Comparative Examples 1 to 7 were evaluated by the following methods.
<Cleaning evaluation method>
The methods for evaluating the cleaning properties of the dentifrice compositions of Examples 1 to 4 and Comparative Examples 1 to 7 were performed by a known PCR method. The PCR value was measured based on a method that was partially modified from the Stooky et al. Paper (Stookey GK et al., Journal of Dental Research 61 (11); 1236-1239, 1982). This method is a generalized method for measuring the cleaning properties of dentifrices.

The determination of the cleaning property of the dentifrice composition in each example and each comparative example is as follows: ◎ when the PCR value of each dentifrice composition is 95 or more, ◯ when it is 81 or more and 94 or less, and x when it is 80 or less. did. The results are as shown in Table 2.
<Evaluation method of brushing feeling>
The method of evaluating the excellent brushing feeling reminiscent of the high cleaning property of the dentifrice composition of Examples 1-4 and Comparative Examples 1-7 was performed by measuring the specific gravity of the dentifrice composition. The specific gravity was measured according to JIS Z 8807 using a specific gravity measuring device by a submerged weighing method.

  In each example and each comparative example, the determination of the brushing feeling (specific gravity) of the dentifrice composition is ◎ when the specific gravity of each dentifrice composition is 1.440 or more, and 1.420 or more and less than 1.440. ○, less than 1.420 was marked as x. The results are as shown in Table 2.

  From the results shown in Table 2, the dentifrice composition of each Example having all of the components (A) to (C) was satisfactory in terms of cleanability and brushing feeling. On the other hand, the dentifrice composition of each comparative example that does not include at least one component among the three components was not satisfactory in terms of either cleaning property or brushing feeling.

[Test 2]
In Test 2, it was evaluated whether the toothpaste compositions of Examples 1 to 4 satisfy safety in addition to cleanability and brushing feeling.
<Safety evaluation method>
The method for evaluating the safety of the dentifrice compositions of Examples 1 to 4 was performed by a known RDA (Radioactive Dentine Abrasion) method. The RDA value was measured based on the method described in Hephalen et al. (Hefferren et al., Journal of Dental Research 55; 563-573,1976). This method is a generalized method for measuring the polishing power of dentifrices.

In the determination of the safety of the dentifrice composition of each example, the RDA value of 170 or less was evaluated as ◎, the 171 to 190 or less as ◯, and the 191 or more as ×. The results are as shown in Table 3.

From the results in Table 3, while reducing the total content of anhydrous silicic acid and calcium carbonate that contributes to polishing power, and supplementing the specific gravity contribution due to calcium carbonate with calcium hydrogen phosphate, while keeping the specific gravity in a suitable range It was found that the RDA value can be suppressed. It was found that by setting the blending amount of the three components to a predetermined ratio, a dentifrice composition excellent in safety in addition to cleanability and brushing feeling can be obtained. In addition, with regard to Example 1, tooth brushing was actually performed using a panel of 20 people, and whether or not “a brushing feeling reminiscent of cleanability” was felt at the time of tooth brushing, and “printing reminiscent of cleaning ability” was performed. When “sweep sensation” was felt, the degree was evaluated. As a result, it was confirmed that a “feeling of cleaning that reminds of cleanability” can be given.

  Tables 4 to 7 below describe the dentifrice compositions of Formulation Examples 1 to 4.

Claims (7)

  A dentifrice composition comprising at least (A) anhydrous silicic acid, (B) calcium carbonate, and (C) calcium hydrogen phosphate as a water-insoluble powder.   The dentifrice composition according to claim 1, wherein the total content of the components (A), (B), and (C) is 10 to 60% by mass in the dentifrice composition.   With respect to the total content of the components (A), (B), and (C), the content of (A) silicic acid is 20% by mass or more, and the content of (B) calcium carbonate and the above (C) The dentifrice composition of Claim 1 or 2 whose sum total with content of calcium hydrogenphosphate is 30 mass% or more.   The total of the content of (A) silicic acid and the content of (B) calcium carbonate is 90% by mass or less with respect to the total content of the components (A), (B), and (C). The dentifrice composition according to claim 1 or 2, wherein the total of the content of (B) calcium carbonate and the content of (C) calcium hydrogen phosphate is 30% by mass or more.   With respect to the total content of the components (A), (B), and (C), the content of (A) silicic acid is 20% by mass or more, and the content of (B) calcium carbonate is 40%. The dentifrice composition according to any one of claims 1 to 4, wherein the dentifrice composition is not more than mass%, and the content of (C) calcium hydrogen phosphate is not less than 10 mass%.   The dentifrice composition according to any one of claims 1 to 5, wherein a mass ratio of the content of the (B) calcium carbonate and the content of the (C) calcium hydrogen phosphate is 1: 1 to 3: 1. object. As a wetting agent, containing at least one selected from sorbit, glycerin, and propylene glycol,
The dentifrice composition as described in any one of Claims 1-6 whose sum total of content of the said moistening agent is 70 mass% or less in a dentifrice composition.