Aerosol product for cleaning oral cavity instrument

Abstract

To provide an aerosol product for cleaning an oral cavity instrument capable of removing contaminant adhered on a surface of an oral cavity instrument such as artificial tooth or a dental correction instrument than a discharging means such as a trigger type spray container or a pump type container.SOLUTION: This was solved by an aerosol product for cleaning oral cavity instruments, characterized by a container with a storage space inside, an oral instrument cleaning agent containing a surfactant housed in the container, and a non-flammable compressed gas filled inside the container along with the oral cavity instrument cleaning agent.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an aerosol product used to clean oral appliances such as dentures, artificial teeth, and orthodontic appliances such as retainers and mouthpieces. [Background technology]

[0002] Conventionally, solid or liquid cleaners have been known for cleaning plaque, stains, food residues, and other dirt adhering to oral appliances, such as dentures, artificial teeth, and dental orthodontic appliances, such as retainers and mouthpieces. Also known is an oral appliance cleaner product that is used by spraying a liquid cleaner.

[0003] For example, Patent Document 1 discloses a spray-type denture cleanser product in which a liquid denture cleanser composition containing a surfactant such as an anionic surfactant or an amphoteric surfactant, an organic phosphonic acid such as hydroxyethanediphosphonic acid or a salt thereof, and a thickener such as a water-soluble polymer substance is filled in a trigger-type spray container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-100434 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the denture cleanser product of Patent Document 1, the liquid denture cleanser composition is filled into a trigger-type spray container having a foam-forming means for discharging the composition in foam form, but there is a strong demand for a product that can better remove dirt adhering to the surface of dentures.

[0006] Therefore, the present invention aims to provide an aerosol product for cleaning oral appliances that can remove dirt adhering to the surfaces of oral appliances such as dentures and orthodontic appliances more effectively than discharge means such as trigger-type spray containers or pump-type containers. [Means for solving the problem]

[0007] [1] That is, the present invention provides an aerosol product for cleaning oral instruments, comprising a container having an internal storage space, an oral instrument cleanser contained in the container and containing a surfactant, and a non-flammable compressed gas filled inside the container together with the oral instrument cleanser.

[0008] [2] The aerosol product for cleaning oral instruments according to claim 1, characterized in that the surfactant is at least one selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

[0009] [3] The aerosol product for cleaning oral instruments according to [1] or [2] above, characterized in that the oral instrument cleanser contains an acid.

[0010] [4] The aerosol product for cleaning oral instruments according to [1] or [2] above, characterized in that the non-flammable compressed gas is carbon dioxide or nitrogen.

[0011] [5] The aerosol product for cleaning oral instruments according to [1] or [2] above, characterized in that the oral instrument cleanser contains a thickener.

[0012] [6] The aerosol product for cleaning oral instruments according to [1] or [2] above, characterized in that the oral instrument cleanser contains a solubilizing agent.

[0013] [7] The aerosol product for cleaning oral instruments according to [1] or [2] above, characterized in that the oral instrument cleanser contains a bactericide. Effect of the Invention

[0014] According to the present invention, dirt adhering to the surfaces of oral appliances such as dentures and orthodontic appliances can be removed more effectively than with discharge means such as a trigger-type spray container or a pump-type container. [Brief description of the drawings]

[0015] [Figure 1] 1 is a central cross-sectional view of an aerosol product for cleaning oral instruments according to the present invention. [Diagram 2] This is an enlargement of the α portion in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the embodiment of the aerosol product for cleaning oral instruments of the present invention will be described in detail. Note that in the description, when a range is indicated by "~", the range includes both the upper and lower limits.

[0017] The container 1 is located at the outermost position visible to the user in the oral instrument cleansing aerosol product of the present invention, and is a metallic member that contains the oral instrument cleanser 2 and compressed gas inside. Since the container 1 is filled with non-flammable compressed gas, it is made of metal such as aluminum alloy or stainless steel, and has pressure resistance so as not to break below a certain pressure. In this embodiment, the container 1 is a hollow cylinder with a bottom and an opening at the top. The opening at the top is sealed by a mounting cup 3 as shown in FIG. 1.

[0018] The container 1 is a member having a storage space inside. Since the present invention is an aerosol product and pressure equal to or higher than atmospheric pressure is applied inside, the container 1 is preferably made of metal such as stainless steel or aluminum alloy to prevent damage. The inner surface of the container 1, i.e., the surface that comes into contact with the oral instrument cleanser 2, is preferably provided with a coating layer 11 coated with at least one resin selected from polyamideimide or phenolic epoxy resin. The coating layer 11 can prevent the inner surface of the container 1 from corroding even if the container 1 is stored for a long period of time while containing the oral instrument cleanser 2 containing an acid or the like. The thickness of the coating layer 11 is preferably 0.1 to 100 μm, more preferably 0.5 to 50 μm, and most preferably 1 to 30 μm. When the thickness of the coating layer 11 is within this range, the coating work is easy to perform, and corrosion of the container 1 by the oral instrument cleanser 2 can be suppressed.

[0019] The polyamideimide that can be used as the coating layer 11 is a resin obtained by further dehydrating and cyclizing (imidizing) the polyamic acid obtained by condensation polymerization of a carboxylic anhydride and a diamine. For example, an equimolar amount of pyromellitic anhydride (benzene-1,2,4,5-tetracarboxylic dianhydride) and 4,4'-diaminodiphenyl ether are condensed and polymerized to obtain a polyamic acid, which is then imidized by heating or using a catalyst to obtain a polyamideimide called poly(4,4'-oxydiphenylene-pyromellitimide). Such polyamideimides have high chemical resistance, so they will not deteriorate due to acids or the like even during the long period of time that the aerosol product for cleaning oral instruments of the present invention is expected to be used. In addition, when forming the coating layer 11 using polyamideimide, it is preferable to first apply a solution of the precursor polyamic acid to the inner surface of the container 1, remove the solvent, and then synthesize the polyamideimide by imidization, such as by applying heat.

[0020] The phenolic epoxy resin that can be used as the coating layer 11 is an epoxy resin in which a phenolic compound is used as at least one of the main agent or the curing agent. For example, it is obtained by ring-opening polymerization of bisphenol A diglycidyl ether, which is a phenolic compound and the main agent, and bisphenol A, which is a phenolic compound and the curing agent. Such a phenolic epoxy resin has high chemical resistance, so it will not deteriorate due to chloride ions or acid even over a long period of time during which the aerosol product for cleaning oral instruments of the present invention is expected to be used. When forming the coating layer 11 using a phenolic epoxy resin, it is preferable to first apply a mixture of glycidyl ether, which is the main agent, and a curing agent such as a hydroxyl group, an amino group, or an organic acid anhydride to the inner surface of the container 1, and then perform ring-opening polymerization by applying heat, etc. to synthesize the phenolic epoxy resin.

[0021] Next, the oral instrument cleanser 2 contained in the container 1 will be described.

[0022] The surfactant contained in the oral instrument cleanser 2 of the present invention is an organic compound having both a hydrophilic part and a lipophilic part and having surface activity. The surfactant is preferably at least one selected from nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants. These surfactants may be used alone or in combination of two or more.

[0023] Nonionic surfactants are organic compounds that have a hydrophilic portion that does not ionize and have surface activity. Preferred are polyoxyethylene alkyl ethers, alkyl glycosides, polyhydric alcohol fatty acid esters such as (poly)glycerin fatty acid esters, sorbitan fatty acid esters, and sucrose fatty acid esters, fatty acid esters of polyoxyethylene-added polyhydric alcohols, and fatty acid diethanolamides. Specifically, preferred nonionic surfactants include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene myristyl ether, polyoxyethylene cetyl ether, and polyoxyethylene stearyl ether; alkyl glycosides such as n-octyl glucoside, n-octyl maltoside, n-decyl glucoside, n-decyl maltoside, n-dodecyl glucoside, and n-heptyl thioglucoside; polyglycerin fatty acid esters such as decaglyceryl monomyristate; fatty acid esters of polyoxyethylene-added polyhydric alcohols such as polyoxyethylene sorbit tetraoleate and polyoxyethylene sorbitan oleate; and fatty acid diethanolamides such as lauric acid diethanolamide and coconut oil fatty acid (carbon number 8 to 18) diethanolamide. These surfactants can be used alone or in combination of two or more. The nonionic surfactants can be used not only in the form of 100% pure liquid or solid compounds, but also in the form of aqueous solutions obtained by diluting them with a predetermined amount of water.

[0024] Among the above nonionic surfactants, those with an HLB calculated by Griffin's formula of 8 to 18 are preferred, and those with an HLB of 10 to 17 are more preferred. When the HLB of a nonionic surfactant is within the above range, it is possible to easily remove dirt such as plaque and stains adhering to oral appliances. When two or more nonionic surfactants are used in combination, it is preferred that the sum of the HLBs obtained by multiplying the HLB of each nonionic surfactant by the blending ratio of each nonionic surfactant to the total nonionic surfactants is within the above range.

[0025] The anionic surfactant is preferably at least one selected from carboxylic acid type, sulfonic acid type, sulfate ester type, and phosphate ester type, and not only 100% pure compounds in liquid or solid form, but also aqueous solutions obtained by diluting them with a predetermined amount of water can be used. Specific examples of the anionic surfactant include carboxylic acid type anionic surfactants such as sodium laurate, sodium stearate, sodium laureth-6 carboxylate (polyoxyethylene (4.5) lauryl ether sodium acetate), sodium lauroyl sarcosine, sodium octanoate, sodium decanoate, sodium myristate, sodium palmitate, coconut oil fatty acid (carbon number 8 to 18) sodium sarconate, and polyoxyethylene tridecyl ether sodium acetate. As the sulfonic acid type anionic surfactant, sodium lauryl sulfoacetate, sodium 1-hexanesulfonate, sodium 1-octane sulfonate, sodium 1-decanesulfonate, sodium 1-dodecanesulfonate, sodium toluenesulfonate, sodium cumenesulfonate, sodium naphthalenesulfonate, disodium naphthalene disulfonate, trisodium naphthalene trisulfonate, sodium alpha olefinsulfonate, etc. are preferred. As the sulfate type anionic surfactant, sodium lauryl sulfate, sodium myristyl sulfate, sodium laureth sulfate (polyoxyethylene (3) sodium lauryl ether sulfate), sodium cetyl sulfate, sodium cocoglyceryl sulfate (hydrogenated sodium coconut oil fatty acid glyceryl sulfate), triethanolamine lauryl sulfate, ammonium lauryl sulfate, triethanolamine laureth sulfate, sodium polyoxyethylene alkyl ether sulfate, etc. are preferred. As the phosphate type anionic surfactant, sodium lauryl phosphate, sodium polyoxyethylene cetyl ether phosphate (sodium polyoxyethylene (5) cetyl ether phosphate), lauryl phosphoric acid, potassium lauryl phosphate, etc. are preferred. The anionic surfactants can be used alone or in combination of two or more.

[0026] The cationic surfactant is preferably at least one selected from quaternary ammonium salt type and amine salt type, and not only 100% pure compounds in liquid or solid form, but also aqueous solutions obtained by diluting them with a predetermined amount of water can be used. Specifically, cationic surfactants of quaternary ammonium salt type are preferably lauryl trimethyl ammonium chloride, benzyl trimethyl ammonium chloride, benzyl triethyl ammonium bromide, tetrabutyl ammonium hydroxide, tetramethyl ammonium bromide, tetrabutyl ammonium iodide, benzyl tributyl ammonium chloride, tetrabutyl ammonium hexafluorophosphate, tetrabutyl ammonium tetrafluoroborate, alkyl dimethyl ammonium chloride, etc. And, cationic surfactants of amine salt type are preferably coconut amine acetate, stearyl amine acetate, etc. The cationic surfactants can be used alone or in combination of two or more types.

[0027] The amphoteric surfactant is preferably at least one selected from amine oxide type and betaine type, and not only 100% pure compounds in liquid or solid form, but also aqueous solutions obtained by diluting them with a predetermined amount of water can be used. Specific examples of amphoteric surfactants include amine oxide type amphoteric surfactants such as lauryl dimethylamine oxide, alkyl dimethylamine oxide (N,N-dimethyl alkyl (C8-18) amine oxide), coconut alkyl dimethylamine oxide, dodecyl dimethylamine oxide, myristyl dimethylamine oxide, dihydroxyethyl lauryl amine oxide, and oleyl dimethylamine oxide. Examples of betaine type amphoteric surfactants include lauryl dimethylamino acetate betaine, lauryl hydroxysulfobetaine, stearyl dimethylamino acetate betaine, dodecyl aminomethyl dimethyl sulfopropyl betaine, coconut oil fatty acid (C8-18) amidopropyl betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, and lauric acid amidopropyl betaine. The amphoteric surfactants may be used alone or in combination of two or more.

[0028] The content of the surfactant is preferably 0.1 to 30% by weight, more preferably 0.5 to 25% by weight, and most preferably 1 to 20% by weight, in the oral instrument cleanser 2. If the content of the surfactant is within this range, it is easy to remove dirt such as plaque and stains adhering to oral instruments.

[0029] The acid that can be contained in the oral instrument cleanser 2 is a substance that exhibits acidity when dissolved in an aqueous solution. The acid can remove dirt adhering to the oral instrument. Specifically, the acid is preferably an organic acid such as citric acid, malic acid, acetic acid, boric acid, lactic acid, formic acid, oxalic acid, or propionic acid, or an inorganic acid such as phosphoric acid or sulfuric acid. These acids can be used alone, or two or more of them can be used in combination.

[0030] The content of the acid is preferably 0.01 to 5 wt %, more preferably 0.05 to 3 wt %, and most preferably 0.1 to 2 wt % in oral instrument cleanser 2. When the content of the acid is within this range, dirt adhering to oral instruments can be removed.

[0031] The acid salts that can be contained in the oral instrument cleanser 2 are salts corresponding to the organic acids and inorganic acids described above. Specifically, for example, when citric acid is used as the acid, the salts are sodium citrate, potassium citrate, calcium citrate, etc., when malic acid is used, the salts are sodium malate, potassium malate, calcium malate, etc., and when phosphoric acid is used, the salts are sodium phosphate, potassium phosphate, calcium phosphate, etc. In this way, by containing the salts corresponding to the acids, the oral instrument cleanser 2 has a predetermined pH range and a large pH fluctuation is suppressed, so that the user can use it in a predetermined range of liquidity.

[0032] The content of the acid salt is preferably 0.01 to 10 wt %, more preferably 0.1 to 5 wt %, and even more preferably 0.5 to 2 wt % of the oral instrument cleanser 2. When the content of the acid salt is within this range, the pH of the oral instrument cleanser 2 can be maintained within a predetermined range.

[0033] The bactericide that can be contained in the oral instrument cleanser 2 is a compound that detoxifies bacteria contained in dirt attached to oral instruments and inactivates viruses. As the bactericide, a quaternary ammonium chloride salt is preferable. Specifically, as the quaternary ammonium chloride salt, benzalkonium chloride, benzethonium chloride, methylbenzethonium chloride, cetylpyridinium chloride, didecyldimethylammonium chloride, etc. are preferable, and in particular, cetylpyridinium chloride, benzalkonium chloride, and benzethonium chloride are preferable. These quaternary ammonium chloride salts can be used alone, but two or more kinds may be used in combination.

[0034] The content of the bactericide is preferably 0.001 to 10% by weight, more preferably 0.005 to 5% by weight, and even more preferably 0.01 to 2% by weight, in the oral instrument cleanser 2. When the content of the bactericide is within this range, bacterial cell membranes are more easily destroyed, and enveloped RNA viruses and DNA viruses are more easily inactivated.

[0035] The solubilizer that can be contained in the oral instrument cleanser 2 is a chemical substance that makes a surfactant, an acid, a salt of the acid, water, etc. into a homogeneous solution. As the solubilizer, an alcohol is preferable, and specifically, a monofunctional alcohol such as ethanol, propylene glycol, butylene glycol, and a polyfunctional alcohol such as glycerin, sorbitol, etc. are preferable.

[0036] The content of the solubilizer is preferably 0.1 to 20% by weight, more preferably 1 to 15% by weight, and even more preferably 3 to 10% by weight, of the oral instrument cleanser 2. When the content of the solubilizer is within this range, the oral instrument cleanser 2 can be made into a homogeneous solution.

[0037] The thickener that may be contained in the oral instrument cleanser 2 is a compound that increases the viscosity of the oral instrument cleanser 2. Specific examples of the thickener include cellulose derivatives such as ethyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose, polysaccharides such as xanthan gum, guar gum, and gum arabic, carboxyvinyl polymers, polyacrylic acids such as sodium polyacrylate or salts thereof, sodium alginate, propylene glycol alginate, and cyclodextrin. These thickeners can be used alone or in combination of two or more.

[0038] The content of the thickener is preferably 0.01 to 10% by weight, more preferably 0.05 to 7% by weight, and even more preferably 0.1 to 2% by weight, of the oral instrument cleanser 2. When the content is within the above range, the oral instrument cleanser 2 can be retained on the oral instrument for a long time, thereby improving the cleaning effect.

[0039] Furthermore, oral instrument cleanser 2 may contain preservatives such as parabens, chelating agents, deodorants, fragrances, colorants, and the like.

[0040] The water that may be contained in the oral instrument cleanser 2 is a solvent for making a uniform solution of a surfactant, an acid, a salt of the acid, etc. Specifically, the water is preferably water conforming to the Japanese Pharmacopoeia standard, and examples of the water include ordinary water such as tap water and well water, purified water obtained by treating ordinary water by distillation, ion exchange treatment using an ion exchange membrane, ultrafiltration treatment using an ultrafiltration membrane, or a combination thereof, and sterilized purified water obtained by sterilizing purified water by heating or the like.

[0041] The oral instrument cleanser 2 thus formulated is placed in a container 1 to finally produce an aerosol product for cleaning an oral instrument.

[0042] As shown in Fig. 1, the oral instrument cleansing aerosol product of the present invention is composed of a container 1, an oral instrument cleanser 2, a mounting cup 3, a stem 4, an elastic spring 5, a tube 6, an actuator 7, etc. The oral instrument cleanser 2 and the non-flammable compressed gas contained in the container 1 are at a higher pressure than the outside of the container 1. Therefore, when the actuator 7 is pressed down, the elastic spring 5 also presses down the stem 4 against the biasing force, and the stem hole 41 communicates with the inside of the container 1, and the oral instrument cleanser 2 and the non-flammable compressed gas are discharged to the outside from a spray nozzle 71 of the actuator 7 through the tube 6 and the stem 4.

[0043] In addition, it is preferable that the container 1 side of the mounting cup 3, i.e., the side that can come into contact with the oral instrument cleanser 2, has a coating layer 11 coated with at least one type of resin selected from polyamideimide or phenolic epoxy resin, similar to the inner surface of the container 1.

[0044] The non-flammable compressed gas of the present invention is filled in the container 1 together with the oral instrument cleaner 2, and is a gas that does not ignite or burn due to a fire at a normal temperature of about 10 to 30 ° C., which is normally used, and is in a state of pressure higher than atmospheric pressure in the container 1. When the actuator 7 is pressed, the non-flammable compressed gas is discharged to the outside together with the oral instrument cleaner 2. Specifically, the non-flammable compressed gas is preferably at least one selected from nitrogen, carbon dioxide, air, nitrous oxide, helium, and argon, and more preferably carbon dioxide. If the non-flammable compressed gas is one of these gases, it will not ignite even if a fire is present near the user, so that the oral instrument cleaning aerosol product of the present invention can be used safely, and when the oral instrument cleaner 2 is discharged from the nozzle 71, it becomes a foam containing many bubbles with a diameter of 1 nm or more and less than 1000 nm, also called ultra-fine bubbles, and the oral instrument cleaner 2 can simply remove dirt attached to the surface of the oral instrument.

[0045] The pressure of the nonflammable compressed gas filled in the container 1 together with the oral instrument cleanser 2 is preferably 0.10 MPa or more and less than 1.0 MPa, and preferably 0.2 MPa or more and 0.9 MPa or less, at 25° C. When the pressure of the nonflammable compressed gas is in this range, the oral instrument cleanser 2 is smoothly discharged together with the nonflammable compressed gas.

[0046] In addition, a combustible compressed gas such as liquefied petroleum gas can be filled together with the non-combustible compressed gas inside the container 1. By filling the container with a combustible compressed gas, the oral instrument cleanser 2 becomes a bulky foam when discharged from the nozzle 71, and can adhere to a wider area of ​​the surface of the oral instrument, compared to when only the non-combustible compressed gas is filled. EXAMPLES

[0047] The oral instrument cleanser 2 of the present invention will be specifically described below. Note that the present invention is not limited to the following examples.

[0048] <Prescription 1> At room temperature of 20°C, 1.00g of polyoxyethylene alkyl (12-14) ether (12E.O.) (HLB: 15) as a nonionic surfactant, 1.20g of decyl glycoside (HLB: 17), 1.50g of cocoamine oxide (N,N-dimethyldodecyldimethylamine = N-oxide) as an amphoteric surfactant, 0.35g of citric acid as an organic acid, 1.00g of trisodium citrate as an organic acid salt, 5.28g of glycerin as a solubilizing agent, 0.01g of disodium ethylenediaminetetraacetate as a chelating agent, 1.00g of cetylpyridinium chloride as a bactericide, and purified water as the remainder were added to a 200ml Griffin beaker and stirred to obtain a total of 100g of an oral instrument cleaner. The amounts of each compound in Formulation 1 are not the amounts as diluted preparations but the amounts as pure components.

[0049] <Prescriptions 2-10> For formulations 2 to 10, a nonionic surfactant, an acid, a salt corresponding to the acid, water, and the like were formulated as shown in Table 1, and a total of 100 g of oral instrument cleansers were obtained in the same manner as in Example 1. For each compound in formulations 2 to 10, the amount is the pure amount, not the amount as a diluted preparation, as in formulation example 1.

[0050] [Table 1]

[0051] <Examples 1 to 9> In this way, the oral instrument cleansing agents 2 obtained according to formulations 1 to 9 were placed in containers 1, and other components such as mounting cups 3 were assembled. Carbon dioxide was then sealed in as a non-flammable compressed gas at a pressure of 0.55 MPa or the like at 25°C to produce the oral instrument cleansing aerosol products of Examples 1 to 9.

[0052] <Comparative Example 1> The oral instrument cleanser obtained according to formulation 10 was then placed in a pump-type container to prepare a pump-type oral instrument cleanser product of Comparative Example 1.

[0053] Using the oral instrument cleansing aerosol products of Examples 1 to 9 and the pump-type oral instrument cleanser product of Comparative Example 1, a test of cleaning power was carried out and evaluated according to the following method.

[0054] [Cleaning power test] A model stain was prepared by dissolving 0.25 g of soybean-derived protein powder, 2 g of soybean-derived lecithin, 5 g of soybean oil, 0.07 g of monoolein, and 0.05 g of oil red (Sudan III) in 10 mL of chloroform. The dentures were immersed in the model stain for 1 to 2 seconds to allow the model stain to adhere, and then air-dried. Then, about 5 g of oral instrument cleaner discharged from the products of Examples 1 to 9 and Comparative Example 1 shown in Table 2 was applied to the dentures with the model stain attached, and the state was kept for 5 minutes. After that, the oral instrument cleaner was washed off with tap water, and the degree of removal of the stain was visually observed. In addition, the dentures that were not applied with the oral instrument cleaner and were washed off with tap water for 10 seconds were used as a control. In comparison with the control, the model stain was completely removed and evaluated as "◎", the stain was almost completely removed and evaluated as "○", the stain was slightly removed and evaluated as "△", and the stain was almost not removed and evaluated as "×". At this time, the items rated as "A" were judged as excellent, the items rated as "B" were judged as good, and the items rated as "C" and "X" were judged as poor.

[0055] Table 2 shows the oral instrument cleansing aerosol products of Examples 1 to 9 and the pump-type oral instrument cleanser product of Comparative Example 1, as well as the results of the cleaning power test thereof.

[0056] [Table 2]

[0057] As shown in Table 2, it was found that the oral instrument cleansers of Formulations 1 to 9 and the oral instrument cleanser aerosol products of Examples 1 to 9 containing carbon dioxide as a non-flammable compressed gas were able to clean dirt from oral instruments better than the pump-type oral instrument cleanser product of Comparative Example 1 of Formulation 10. Furthermore, the results of the cleaning power test of the oral instrument cleanser aerosol products of Examples 1 to 9 showed that mixing a small amount of liquefied petroleum gas in addition to carbon dioxide into the propellant slightly reduced the cleaning power, and therefore it was found that it is more preferable to mix only carbon dioxide as a non-flammable compressed gas into the propellant. [Explanation of symbols]

[0058] 1...container 11...Covering layer 2. Oral instrument cleaner 3. Mounting cup 4. Stem 41 Stem hole 5. Elastic spring 6...Tube 7. Actuator 71...Spray nozzle

Claims

1. A container having an internal storage space; An oral instrument cleanser contained in the container and containing a surfactant; An aerosol product for cleaning oral instruments, comprising a non-flammable compressed gas filled inside the container together with the oral instrument cleanser.

2. 2. The aerosol product for cleaning oral instruments according to claim 1, wherein the surfactant is at least one selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

3. 3. The aerosol product for cleaning oral instruments according to claim 1, wherein the oral instrument cleanser contains an acid.

4. 3. The aerosol product for cleaning oral instruments according to claim 1 or 2, characterized in that the non-flammable compressed gas is carbon dioxide or nitrogen.

5. 3. The oral instrument cleansing aerosol product according to claim 1, wherein the oral instrument cleanser contains a thickener.

6. 3. The aerosol product for cleaning oral instruments according to claim 1, wherein the oral instrument cleanser contains a solubilizing agent.

7. 3. The aerosol product for cleaning oral instruments according to claim 1, wherein the oral instrument cleanser contains a bactericide.

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