KR20190011696A - Composition for dental cleaning - Google Patents

Abstract

The present invention provides a composition for cleaning tooth surfaces having excellent cleaning ability and low invasiveness to tooth surfaces. The present invention relates to the composition for cleaning tooth surfaces including at least one of calcium carbonate and calcium fluoride having a middle diameter of 5μm or more and 24μm or less at a ratio of 45 mass% or more and 61 mass% or less, including more liquid components and having a pH of nine or more and ten or less.

Description

COMPOSITION FOR DENTAL CLEANING [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental cleaning composition used for cleaning a tooth surface.

BACKGROUND ART [0002] When cleaning a patient's tooth surface by using a toothbrush or by using a dedicated dental cleaning tool in a dental hospital, a dental cleaning composition is used. Conventional dental cleaning compositions are expected to promote recalcification of tooth surfaces (for example, see Patent Document 1) by compounding a calcium compound at a high concentration, for example.

However, in the conventional dental cleaning composition, there is a room for improvement in the ability to remove dental calculus and colored staining (discoloration), and a dental cleaning composition having a higher dental cleaning ability has been desired.

In addition, in a conventional dental cleaning composition, there is a problem that a tooth surface is liable to be damaged as the dental cleaning ability is higher, and a dental cleaning composition having less invasion to a dental surface has been required.

Japanese Patent Application Laid-Open No. 2013-163656

Accordingly, it is an object of the present invention to provide a dental cleaning composition having high dental cleaning ability and low invasiveness to the dental surface.

According to the present invention, it is preferable that at least one of calcium carbonate and calcium fluoride having a median diameter of 5 占 퐉 or more and 24 占 퐉 or less is contained in a ratio of 45 mass% or more and 61 mass% or less and further includes a liquid component, And more preferably 9 or more and 10 or less.

The composition for cleaning a dental surface according to the present invention is a composition for cleaning a dental surface, which has high dental cleaning ability and low invasiveness to the dental surface.

The composition for cleaning the dental surface according to the present invention may contain calcium carbonate and / or calcium fluoride as particles for cleaning teeth. Calcium carbonate and calcium fluoride have a high ability to clean the teeth and are less invasive to the tooth surface.

The compounding amount of calcium carbonate and / or calcium fluoride in the dentifrice cleaning composition should be 45 mass% or more and 61 mass% or less. If it is less than 45% by mass, the cleaning ability of the tooth surface is lowered. If it exceeds 61% by mass, the properties of the paste become hard and the operability is deteriorated. More preferably, it is 49 mass% or more and 55 mass% or less.

In addition, calcium carbonate or calcium fluoride needs to have a median diameter of the particles of 5 mu m or more and 24 mu m or less. If the central diameter is less than 5 탆, the ability to clean the tooth surface is lowered, and if it exceeds 24 탆, the invasion to the tooth surface will be higher. More preferably, the median diameter is 8 占 퐉 or more and 20 占 퐉 or less.

A saccharide may be added to the dental cleaning composition according to the present invention in order to improve the taste. The saccharides include, for example, stevia, xylitol, sorbitol, oligosaccharides, acesulfame potassium, trehalose, aspartame, mannitol mannitol, maltitol, lactitol and the like. These may be used singly or in combination of two or more.

It is preferable that the blending amount of saccharides in the dentifrice cleaning composition is 1% by mass or more and 5% by mass or less. When the content is 1% by mass or more, the taste of the paste is improved and it is easy to use. When the content is 5% by mass or less, an exhilaration can be maintained.

A dentifrice cleaning composition according to the present invention may contain a viscous agent for viscosity adjustment. Examples of the binder include sodium alginate, propylene glycol alginate, carboxymethylcellulose, carboxymethylcellulose sodium, carboxymethylcellulose calcium, sodium starch glycolate, sodium starch phosphate ester, sodium polyacrylate, carboxypolymethylene, methyl Cellulose, crystalline cellulose, hydroxyethylcellulose, hydroxypropylcellulose, starch, polyvinylpyrrolidone, guar gum, carob bean gum, tara gum, tamarind seed gum, such as tamarind sead gum, arabic gum, tragacanth gum, karaya gum, alginic acid, carrageenan, xanthan gum, gellan gum soluble polymers such as gum, curdlan, lactose, chitin, chitosan, chitosamine and the like. These may be used singly or in combination of two or more.

The compounding amount of the dentifrice in the dentifrice cleaning composition is preferably 0.1% by mass or more and 1% by mass or less. When the content is 0.1% by mass or more, the paste has a viscosity that is easy to take on the toothbrush. When the content is 1% by mass or less, the hardness becomes appropriate for easy removal from the tube.

A fluorine compound other than calcium fluoride may be compounded in the composition for cleaning the dental surface according to the present invention. By adding the fluorine compound, fluorine ions are supplied into the oral cavity, and the effect of preventing tooth decay is further expected. Examples of the fluorine compound other than calcium fluoride include sodium fluoride, potassium fluoride, ammonium fluoride, tin fluoride, sodium fluorophosphate, potassium fluorophosphate and the like. These may be used singly or in combination of two or more.

It is preferable that the blending amount of the fluorine compound other than calcium fluoride in the dentifrice cleaning composition is 0.025 mass% or more and 0.9 mass% or less. When the content is 0.025% by mass or more, the effect of preventing tooth decay is expected, and when the content is 0.9% by mass or less, there is no influence on the living body even in daily use.

The tooth cleaning composition of the present invention may contain a preservative. Preservatives include, for example, ethylparaben, methylparaben, and the like. These may be used singly or in combination of two or more.

The blending amount of the preservative in the composition for interfacial cleaning is preferably not less than 0.1 mass% and not more than 0.3 mass%. When the content is 0.1% by mass or more, a corrosion-preventing effect is expected. When the content is 0.3% by mass or less, there is no influence on the living body even in daily use.

A liquid composition is added to the dental cleaning composition according to the present invention. By mixing the liquid component, it can function as a solvent and can be pasted. It also functions as a wetting agent. Examples of the liquid component include water, such as polyethylene glycol, ethylene glycol, propylene glycol, glycerin, chondroitin sulfate or its salt, and the like. These may be used singly or in combination of two or more.

The blending amount of the liquid component in the dental surface cleaning composition is preferably 20 mass% or more and 54 mass% or less. When it is 20 mass% or more, it becomes a soft paste phase, and when it is 54 mass% or less, it is difficult to be stretched when put on a toothbrush or the like. More preferably, it is 30 mass% or more and 45 mass% or less.

Surfactants can be incorporated into the composition for cleaning the dental surface of the present invention. By adding a surfactant, the cleaning effect, foaming effect, and the like of the dentifrice cleaning composition can be improved. Examples of the surfactant include sodium lauryl sulfate, sodium lauroyl sarcosinate, sodium lauroylmethyltaurate, laurylbetaine, sodium cetylsulfate, sodium laurylether sulfate, ammonium laurylsulfosuccinate, laurylsulfate Ammonium, ammonium lauryl ether sulfate, sodium lauroyl iethionate, sodium dodecylbenzenesulfonate, triethanolamine dodecylbenzenesulfonate, sodium cocoyl iethionate, and the like.

The tooth surface cleaning composition according to the present invention is preferable because it has a viscosity of 80 to 400 Pa · s at 25 ° C because it is suitable for use in oral cavity. More preferably, it is 150 to 250 Pa · s at 25 ° C.

The tooth cleaning composition according to the present invention may contain a thickening agent for adjusting the viscosity. Examples of the thickening agent include silica-based compounds such as silicic anhydride and silica gel.

The tooth cleaning composition according to the present invention needs to have a pH of 9 or more and 10 or less. If the pH is less than 9, the ability to clean the teeth is low. If the pH is more than 10, the stimulus is large when used in the oral cavity.

Additives such as a coloring agent, a preservative, an antifungal agent, and a flavoring agent may be appropriately added to the composition for dental cleaning according to the present invention.

Example

Hereinafter, the present invention will be described in detail by way of examples, but the present invention is not limited to the following examples.

≪ Example 1 >

As shown in Table 1, 53 mass% of calcium carbonate (median diameter: 10 탆), 3 mass% of sorbitol, 0.6 mass% of carboxymethyl cellulose sodium, 0.8 mass% of hydroxyethyl cellulose, 0.5 mass% of sodium monofluorophosphate, 0.2% by mass of methylparaben, 0.4% by mass of silicic anhydride, 24.5% by mass of purified water, 16% by mass of glycerin and 1% by mass of a perfume were mixed and kneaded using a mixer to prepare a paste-type tooth cleaning composition.

≪ Examples 2 to 5 and Comparative Examples 1 to 5 >

A paste-like tooth cleaning composition was prepared in the same manner as in Example 1 by the composition shown in Table 1.

[pH measurement]

For each dental cleaning composition, the pH was measured using a pH meter (Horiba, Ltd., D-52). The results are shown in Table 1.

[Center Diameter of Calcium Carbonate or Calcium Fluoride Particle]

Using a laser diffraction / scattering particle diameter distribution measuring device, the center diameter (by volume) of the calcium carbonate or calcium fluoride particles was measured.

[Invasion to the dental surface]

The following tests were carried out to evaluate the invasiveness of tooth surfaces in each of the dental cleaning compositions.

The enamel surface of the bovine teeth was mirror-polished using a water resistant paper # 4000 and a diamond paste of 3μ · 1μ and a buff to prepare a test piece.

Subsequently, 0.1 g of each tooth cleaning composition was applied to the polishing surface of the test piece, and the tooth surface was cleaned using a rubber cup for tooth cleaning (GC Company, PTC Cup II) at 1940 rpm for 1 minute.

The arithmetic surface roughness (Ra) was measured using a laser microscope (VK-X200, manufactured by KEYENCE CORPORATION) for the area where the tooth cleaning was performed.

Indicators for assessing invasiveness to the dentate are as follows. The results are shown in Table 1.

Very good: Ra less than 0.10 탆

Good: Ra is 0.10 탆 or more and less than 0.15 탆

Poor: Ra is 0.15 탆 or more

[Ability to clean teeth]

The following tests were conducted to evaluate the tooth cleaning ability of each tooth cleaning composition.

The enamel surface of the bovine teeth was polished with a domestic paper # 4000, and then immersed in a coloring solution containing iron tannate as a main component for 10 minutes to deposit discoloration to obtain test pieces. The color of the test piece was measured using a spectroscopic colorimeter (Konica Minolta, CM-700d).

Next, 0.1 g of each composition for cleaning the dental surface was applied to the test piece, and the teeth were cleaned using a PTC brush for tooth cleaning at a condition of 1940 rpm for 30 seconds.

The color was measured using a spectrophotometric colorimeter and the color difference (ΔE ^* ab) in the L ^* , a ^* and b ^* color spaces was calculated before and after the cleaning of the tooth surface.

Evaluation index of tooth cleaning ability is as follows. The results are shown in Table 1.

Very good: ΔE ^* ab is 10 or more

Good: ΔE ^* ab is between 5 and less than 10

Poor: ΔE ^* ab less than 5

It can be seen from Table 1 that the composition for cleaning the dental surface according to the present invention has a low ability to invade the tooth surface and a high ability to clean the tooth surface.

Although the embodiments of the present invention have been described above, the contents of the present invention are not limited thereto.

This application claims priority from Japanese Patent Application No. 2017-143546, filed on July 25, 2017, the entire contents of which are incorporated herein by reference.

Claims (1)

At least one of calcium carbonate and calcium fluoride having a median diameter of 5 占 퐉 or more and 24 占 퐉 or less at a ratio of 45 mass% or more and 61 mass%
Further comprising a liquid phase component,
wherein the pH is 9 or more and 10 or less.