Oral appliance cleaner

Abstract

To provide an intraoral attachment cleaner that has excellent deodorizing power and contains an oxygen-based bleaching agent, while preventing discoloration of various metal components in the intraoral attachment.SOLUTION: An intraoral attachment cleaner disclosed herein contains (A) at least one carbonate compound selected from the group consisting of carbonate, bicarbonate, and double salt of bicarbonate and carbonate, (B) acid, (C) oxygen-based bleaching agent, and (D) cyclodextrin.SELECTED DRAWING: None

Description

Technical Field

[0001] The present disclosure relates to an oral appliance cleaning agent that has excellent deodorizing power and can suppress discoloration of various metal parts of oral appliances while containing an oxygen-based bleaching agent.

Background Art

[0002] Oral appliances such as dentures are likely to have bacteria, biofilms, and other deposits adhering to them. If left uncleaned, they can not only cause bad breath but also contribute to the induction of oral diseases such as periodontal disease. Therefore, as part of oral care, it is essential to clean and keep oral appliances clean. Bacteria and dirt adhering to oral appliances cannot be sufficiently removed by brushing, so cleaning with a cleaning agent is important.

[0003] The cleaning of oral appliances with a cleaning agent is generally performed by immersing the oral appliances in cleaning water prepared by adding the cleaning agent to water and leaving them there. Conventionally, surfactants and foaming agents (carbonic acid compounds and acids) are blended in oral appliance cleaning agents, which are designed to exhibit chemical cleaning power due to the surfactant action and physical cleaning power due to the foaming action when added to water, thereby enhancing the cleaning effect.

[0004] Also, in oral appliance cleaning agents, bleaching agents are generally blended to impart a bleaching action and improve cleaning power and deodorizing power. For example, in Patent Document 1, a denture cleaning agent containing an oxygen-based bleaching agent has been proposed. By blending an oxygen-based bleaching agent in the denture cleaning agent, excellent deodorizing power can be imparted to the denture cleaning agent.

[0005] Also, the gingival part of dentures is generally formed from resin materials such as polymethacrylic resin, polysulfone resin, polyethersulfone resin, and polycarbonate resin, and partial dentures that account for half of the full dentures have metal parts such as clasps and bars.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Patent Publication No. 2005-272365 [Overview of the project] [Problems that the invention aims to solve]

[0007] However, when an oxygen-based bleach is added to the oral appliance cleaner, there is a problem in that if an oral appliance with metal parts is washed multiple times with the cleaning solution containing the oral appliance cleaner, discoloration due to rust or other causes is likely to occur on the metal parts of the oral appliance.

[0008] The purpose of this disclosure is to provide an oral appliance cleaning agent that has excellent deodorizing power and, while containing an oxygen-based bleaching agent, can suppress discoloration of various metal parts of oral appliances. [Means for solving the problem]

[0009] The inventors conducted diligent research to solve the aforementioned problems and discovered that by including cyclodextrin together with an oxygen-based bleaching agent in an oral appliance cleaning agent, not only is the deodorizing power improved, but discoloration of various metal parts of oral appliances can also be suppressed. This disclosure was completed by further research based on these findings.

[0010] In other words, this disclosure provides inventions in the following embodiments. Item 1. An oral appliance cleaner comprising (A) at least one carbonate compound selected from the group consisting of carbonates, bicarbonates, and double salts of bicarbonates and carbonates, (B) an acid, (C) an oxygen-based bleaching agent, and (D) cyclodextrin. Item 2. The oral appliance cleaner described in Item 1, wherein the oxygen-based bleaching agent is a monopersulfate. Item 3. Furthermore, an oral instrument cleaner according to item 1 or 2, comprising (E) a bleaching activator. Item 4. The oral appliance cleaner according to item 3, wherein the bleaching activator is tetraacetylethylenediamine. Item 5. An oral appliance cleaner according to any of items 1 to 4, used for cleaning dentures having metal parts. Item 6. The denture is a partial denture, as described in Item 5, and is an oral appliance cleaner. Item 7. Use of a composition comprising (A) at least one carbonate compound selected from the group consisting of carbonates, bicarbonates, and double salts of bicarbonates and carbonates, (B) an acid, (C) an oxygen-based bleaching agent, and (D) a cyclodextrin, for cleaning oral instruments. Item 8. Use of a composition comprising (A) at least one carbonate compound selected from the group consisting of carbonates, bicarbonates, and double salts of bicarbonates and carbonates, (B) an acid, (C) an oxygen-based bleaching agent, and (D) a cyclodextrin, as a cleaning agent for oral instruments. Item 9. A method for cleaning oral instruments, comprising immersing oral instruments in water containing an oral instrument cleaning agent comprising (A) at least one carbonate compound selected from the group consisting of carbonates, bicarbonates, and double salts of bicarbonates and carbonates, (B) an acid, (C) an oxygen-based bleaching agent, and (D) cyclodextrin. Item 10. A method for suppressing discoloration of the metal parts of an oral appliance, comprising immersing the oral appliance having metal parts in water containing an oral appliance cleaning agent comprising (A) at least one carbonate compound selected from the group consisting of carbonates, bicarbonates, and double salts of bicarbonates and carbonates, (B) an acid, (C) an oxygen-based bleaching agent, and (D) cyclodextrin. [Effects of the Invention]

[0011] The oral appliance cleaner disclosed herein has excellent deodorizing power due to the oxygen-based bleach and cyclodextrin, and while containing an oxygen-based bleach, it can effectively suppress discoloration (especially discoloration due to rust) of various metal parts of oral appliances, thus achieving both odor reduction of oral appliances and maintenance of the appearance of oral appliances with various metal parts. Furthermore, the oral appliance cleaner disclosed herein exhibits a particularly excellent discoloration suppression effect (especially rust suppression effect) when the metal of the metal part of the oral appliance is a gold-silver-palladium alloy, gold-silver-palladium alloy solder, or silver alloy (Type 1, Type 2). In addition, the oral appliance cleaner disclosed herein is particularly useful as a cleaner for partial dentures, which often have metal parts. [Modes for carrying out the invention]

[0012] In this specification, the notation X~Y for numerical ranges means that the range is greater than or equal to X and less than or equal to Y.

[0013] In this specification, "intraoral appliance" means a dental appliance that is attached to and removed in the oral cavity, such as complete dentures, partial dentures, orthodontic appliances, and retainers, and which has at least a part of it made of metal.

[0014] 1. Cleaning agent for oral instruments The oral appliance cleaner of this disclosure is characterized by comprising (A) at least one carbonate compound selected from the group consisting of carbonates, bicarbonates, and double salts of bicarbonates and carbonates (hereinafter sometimes referred to as component (A)), (B) an acid (hereinafter sometimes referred to as component (B)), (C) an oxygen-based bleaching agent (hereinafter sometimes referred to as component (C)), and (D) cyclodextrin (hereinafter sometimes referred to as component (D)). The oral appliance cleaner of this disclosure will be described in detail below.

[0015] [Carbonate compounds] The oral appliance cleaner of the present disclosure contains, as component (A), at least one carbonate compound selected from the group consisting of carbonate, bicarbonate, and double salts of bicarbonate and carbonate. The carbonate compound is a component known as a foaming agent of the oral appliance cleaner.

[0016] The carbonate is not particularly limited, and examples include alkali metal salts of carbonic acid such as sodium carbonate and potassium carbonate, and preferably sodium carbonate. The bicarbonate is not particularly limited, and examples include alkali metal salts of hydrogen carbonate such as sodium hydrogen carbonate and potassium hydrogen carbonate, and preferably sodium hydrogen carbonate. The double salt of carbonate and bicarbonate is not particularly limited, and examples include sodium sesquicarbonate and the like. The exemplified carbonate compounds may be used alone or in combination of two or more.

[0017] In the oral appliance cleaner of the present disclosure, the content of component (A) is not particularly limited as long as sufficient carbon dioxide bubbles can be generated during the cleaning of the oral appliance. For example, it may be 1 to 40% by weight, preferably 3 to 30% by weight, and more preferably 5 to 25% by weight.

[0018] [Acid] The oral appliance cleaner of the present disclosure contains an acid as component (B). The acid is a component known as a foaming agent of the oral appliance cleaner.

[0019] Examples of the acid include organic acids and inorganic acids, and preferably organic acids. Examples of the organic acid are not particularly limited, and include, for example, citric acid, tartaric acid, fumaric acid, malic acid, maleic acid, gluconic acid, succinic acid, salicylic acid, etc. Examples of the inorganic acid are not particularly limited, and include, for example, phosphoric acid, sulfamic acid, etc. The exemplified acids may be used alone or in combination of two or more.

[0020] In the oral appliance cleaning agent of the present disclosure, the content of component (B) is not particularly limited as long as sufficient carbon dioxide bubbles can be generated during the cleaning of the oral appliance. For example, it is 1 to 60% by weight, preferably 3 to 40% by weight, more preferably 5 to 20% by weight.

[0021] In the oral appliance cleaning agent of the present disclosure, the content of component (B) is not particularly limited as long as it can react with component (A) in water to generate carbon dioxide. However, based on 100 parts by weight of component (A), the content of component (B) is, for example, 20 to 150 parts by weight, preferably 75 to 420 parts by weight, and more preferably 80 to 320 parts by weight.

[0022] [Oxygen-based bleaching agent] The oral appliance cleaning agent of the present disclosure contains an oxygen-based bleaching agent as component (C). The oxygen-based bleaching agent is a component that generates HO2 - in water. By including an oxygen-based bleaching agent in the oral appliance cleaning agent, excellent deodorizing power can be imparted to the oral appliance cleaning agent.

[0023] The oxygen-based bleaching agent is not particularly limited as long as it is non-toxic and physiologically acceptable, and those commonly used in oral appliance cleaning agents can be widely used. Examples of the oxygen-based bleaching agent include percarbonate, perborate, persulfate, monopersulfate hydrogen salt, and the like. The exemplified oxygen-based bleaching agents may be used alone or in combination of two or more.

[0024] Examples of percarbonates include alkali metal salts of percarbonate such as sodium percarbonate and potassium percarbonate, ammonium percarbonate, and their hydrates. Examples of perborates include alkali metal salts of perboric acid such as sodium perborate and potassium perborate, ammonium perborate, and their hydrates. Examples of persulfates include alkali metal salts of persulfate such as sodium persulfate and potassium persulfate, ammonium persulfate, and their hydrates. Examples of monopersulfates include alkali metal salts of monopersulfate such as sodium monopersulfate and potassium monopersulfate, ammonium monopersulfate, and their hydrates. The oxygen-based bleaches exemplified above may be used individually or in combination of two or more. Of the oxygen-based bleaches exemplified above, monopersulfates are preferred, and more preferably potassium monopersulfates, from the viewpoint of providing even better deodorizing power to the oral appliance cleaner.

[0025] In the oral appliance cleaning agent of this disclosure, the content of component (C) can be appropriately set within a range that exhibits the desired deodorizing power, for example, 1 to 40% by weight, and from the viewpoint of enhancing the deodorizing power, preferably 2 to 30% by weight, and more preferably 3 to 20% by weight.

[0026] [Cyclodextrin] The oral appliance cleaner of this disclosure contains cyclodextrin as component (D). In the oral appliance cleaner of this disclosure, cyclodextrin is an ingredient that provides excellent deodorizing power and suppresses discoloration of various metal parts of the oral appliance caused by component (C) (especially discoloration due to rust).

[0027] The cyclodextrin is not particularly limited, and examples include those with five or more glucose units linked together. Specifically, examples include α-cyclodextrin with six glucose units linked, β-cyclodextrin with seven glucose units linked, γ-cyclodextrin with eight glucose units linked, and cluster dextrin (registered trademark), which is a highly branched cyclic dextrin. Cluster dextrin can be commercially obtained from companies such as Nippon Shokuhin Kako Co., Ltd. and Ezaki Glico Co., Ltd. The cyclodextrins described above may be used individually or in combination of two or more.

[0028] As for the cyclodextrin, from the viewpoint of further improving deodorizing power and effectively suppressing discoloration of various metal parts of the oral appliance, it is preferable to use at least one selected from the group consisting of α-, β-, and γ-cyclodextrin, more preferably to use at least two selected from the group consisting of α-, β-, and γ-cyclodextrin, and even more preferably to use all three types of α-, β-, and γ-cyclodextrin. When using α-, β-, and γ-cyclodextrins, the weight ratio of α-, β-, and γ-cyclodextrins is not particularly limited. However, from the viewpoint of more effectively suppressing discoloration of various metal parts of oral instruments, when the total amount of α-, β-, and γ-cyclodextrins is 100 parts by weight, the content of α-cyclodextrin is preferably 20 to 40 parts by weight, more preferably 25 to 35 parts by weight, the content of β-cyclodextrin is preferably 35 to 70 parts by weight, more preferably 45 to 60 parts by weight, and the content of γ-cyclodextrin is preferably 10 to 25 parts by weight, more preferably 15 to 20 parts by weight.

[0029] In the oral appliance cleaning agent of this disclosure, the content of component (D) can be appropriately adjusted according to the content of the oxygen-based bleaching agent, for example, 0.01 to 5% by weight, and from the viewpoint of effectively suppressing discoloration of various metal parts of the oral appliance, preferably 0.05 to 3% by weight, more preferably 0.1 to 1% by weight, and even more preferably 0.1 to 0.7% by weight.

[0030] In the oral appliance cleaning agent of this disclosure, the content ratio of component (D) to component (C) is not particularly limited. For example, the content of component (D) is 0.1 to 20 parts by weight per 100 parts by weight of component (C). From the viewpoint of effectively suppressing discoloration of various metal parts of oral appliances, preferably 0.5 to 15 parts by weight, more preferably 1 to 10 parts by weight, and even more preferably 1 to 5 parts by weight.

[0031] [Bleach activator] The oral appliance cleaner of this disclosure may contain (E) a bleaching activator (hereinafter sometimes referred to as component (E)). The bleaching activator is HO2 generated from an oxygen-based bleach in water. - It is an ingredient that reacts with to generate an organic peracid with a higher bleaching effect. When an oral appliance cleaner contains a bleaching activator along with an oxygen-based bleaching agent, cleaning an oral appliance with metal parts with the cleaning water containing the oral appliance cleaner causes significant discoloration of the metal parts of the oral appliance (especially discoloration due to rust). However, since the oral appliance cleaner of this disclosure contains cyclodextrin along with the oxygen-based bleaching agent and the bleaching activator, it can effectively suppress discoloration of various metal parts of the oral appliance.

[0032] As the bleaching activator, any known agent can be used without particular limitation. Examples include tetraacetylethylenediamine; alkanoyloxybenzenesulfonic acid or a salt thereof having an alkanoyl group with 1 to 18 carbon atoms, preferably 8 to 12 carbon atoms; and alkanoyloxybenzoic acid or a salt thereof having an alkanoyl group with 1 to 18 carbon atoms, preferably 8 to 12 carbon atoms. Examples of the salts include alkali metal salts and ammonium salts. The example bleaching activators may be used individually or in combination of two or more. Among the example bleaching activators, tetraacetylethylenediamine is preferred from the viewpoint of being efficient in generating organic peracids.

[0033] In the oral appliance cleaning agent of this disclosure, the content of component (E) can be appropriately adjusted according to the content of the oxygen-based bleaching agent, for example, 0.01 to 5% by weight, and from the viewpoint of providing excellent deodorizing power, preferably 0.1 to 3% by weight, more preferably 0.5 to 2% by weight.

[0034] [Other ingredients] In addition to the components described herein, the oral appliance cleaner may contain other components as necessary, to the extent that they do not interfere with the effects of the herein disclosure.

[0035] Other additives that can be incorporated into the oral appliance cleaning agent of this disclosure include rust inhibitors, lubricants, magnesium oxide, fragrances, surfactants, binders, deodorants, chelating agents, pH adjusters, enzymes, sweeteners, foaming stabilizers, preservatives, antibacterial / bactericidal agents, antiseptics, bulking agents, excipients, disintegrants, and fluidizing agents. The other components exemplified above may be incorporated individually or in any combination of two or more.

[0036] 2. Formulation of oral instrument cleaning agents The oral appliance cleaning agent of this disclosure is in solid form, specifically molded into powder, granules, or tablets, preferably molded into granules or tablets, and most preferably molded into tablets. When molded into tablets, the weight per tablet is not particularly limited and may be set appropriately considering ease of use, however, it is desirable to set the weight per tablet to the amount required for one cleaning of an oral appliance.

[0037] The manufacture of tablet-type oral device cleaners can be carried out according to known methods. For example, the oral device cleaner of this disclosure can be manufactured by subjecting a mixture of components (A) to (D) and other components added as needed to a granular molding process such as granulation, or a tablet molding process such as tablet compression.

[0038] 3. How to use oral appliance cleaning solution The oral appliance cleaner of this disclosure is added to water, heated if necessary, and when the oral appliance to be cleaned is placed in it, the oral appliance is cleaned by foaming action caused by the reaction of components (A) and (B). Furthermore, because the oral appliance cleaner of this disclosure contains components (C) and (D), it exhibits excellent deodorizing and cleaning power. In addition, because the oral appliance cleaner of this disclosure contains component (D) along with component (C), it can effectively suppress discoloration of various metal parts of oral appliances. Moreover, the oral appliance cleaner of this disclosure exhibits an excellent discoloration suppression effect when the metal of the metal part of the oral appliance is a gold-silver-palladium alloy, gold-silver-palladium alloy solder, or silver alloy (Type 1, Type 2). The oral appliance cleaner of this disclosure is used, for example, as a cleaner for complete dentures or partial dentures (denture cleaner), preferably as a cleaner for complete dentures or partial dentures containing metal materials, and more preferably as a cleaner for complete dentures or partial dentures having metal parts.

[0039] The water used when cleaning an oral appliance with the oral appliance cleaning agent of this disclosure is not particularly limited, but examples include tap water, purified water, distilled water, and physiological saline.

[0040] When cleaning an oral appliance using the oral appliance cleaner of this disclosure, the oral appliance cleaner may be added to the oral appliance cleaner after immersing the oral appliance in water, or the oral appliance cleaner may be added to water first and then immersed in water.

[0041] Furthermore, when cleaning oral devices, the ratio of the oral device cleaning agent of this disclosure to water is appropriately set according to the composition of the oral device cleaning agent of this disclosure, the degree of soiling of the oral device to be cleaned, etc. For example, the ratio is usually about 1 to 10 parts by weight, preferably about 1 to 5 parts by weight, of the oral device cleaning agent per 100 parts by weight of water. More specifically, when cleaning an oral device once, prepare 100 to 200 mL of water and add 1 to 20 g, preferably 1 to 10 g, more preferably 1 to 5 g, of the oral device cleaning agent of this disclosure to it.

[0042] The temperature of the cleaning solution for oral devices should be around room temperature. The time for immersing the oral devices in the cleaning solution is usually 5 minutes to 24 hours, preferably 10 minutes to 12 hours, and more preferably 30 minutes to 8 hours.

[0043] Furthermore, while it is not necessary to agitate the water containing the oral appliance cleaning agent during the cleaning of the oral appliances, agitation may be performed if necessary, and the oral appliances may also be scrubbed with a brush or other cleaning tool. [Examples]

[0044] The invention of this disclosure will be described in more detail below with reference to examples, but this disclosure is not limited to these examples.

[0045] The composition of the cyclodextrin used in the following test examples and formulation examples is as follows: • Cyclodextrin: A mixture of 13 parts by weight of α-cyclodextrin, 20 parts by weight of β-cyclodextrin, 7 parts by weight of γ-cyclodextrin, and 60 parts by weight of powdered syrup. • A mixture of potassium sulfate, potassium bisulfate, and potassium monopersulfate (containing approximately 43% by weight of potassium monopersulfate)

[0046] Test example Tablet-type oral device cleaners with the compositions shown in Table 1 were prepared. Specifically, the compositions of the components shown in Table 1 were mixed and compressed into tablets at 47 MPa using a 25φ diameter mold and a tablet press (SMP-3012SK, a small electric hydraulic pump manufactured by Riken Kiki Co., Ltd.) to prepare 2.65 g tablets of oral device cleaner. In Table 1, the units of the numerical values ​​showing the amount of each component in each composition are in weight percent. Also, in Table 1, the amount in the cyclodextrin column represents the total amount of α-, β-, and γ-cyclodextrin.

[0047] The prepared oral appliance cleaner was subjected to deodorization tests and metal rusting tests using the following methods.

[0048] <Deodorization Test A> 200 μl of an malodorous aqueous solution containing methyl mercaptan (methyl mercaptan concentration: 3000 ppm) was placed in a glass container. In addition, one tablet of each oral device cleaning agent prepared in Examples 1-6, Comparative Examples 1-6, and Reference Example 1 was added to 180 ml of water at 25°C to prepare a cleaning solution. Then, 400 μl of each prepared cleaning solution was added to the glass container, and the mouth of the glass container was sealed with paraffin film. The glass container was then left to stand at 25°C for 30 minutes. After that, the concentration (ppm) of methyl mercaptan contained in the gas inside the glass container was measured using a detector tube type gas analyzer and a detector tube 71H (Gastec Co., Ltd.). The results are shown in Table 1.

[0049] <Deodorization Test B> A resin tip (20mm x 20mm x 1.5mm) of denture material was immersed in the malodorous aqueous solution used in deodorization test A. One tablet of each oral appliance cleaner prepared in Examples 1-6, Comparative Examples 1-6, and Reference Example 1 was placed in a glass container containing 180ml of water at 25°C to prepare a cleaning solution. The resin tip removed from the malodorous aqueous solution was immersed in each prepared cleaning solution and left to stand at 25°C for 3 hours to clean the resin tip. After cleaning, the resin tip was removed and placed in a 10L capacity airbag, and 1.5L of odorless air was filled for every 5 resin tips. After standing at 25°C for 10 minutes, the deodorizing properties of the gas in the airbag were evaluated. For the deodorizing properties, a 6-level odor intensity method and a 9-level pleasantness / unpleasantness scale were used.

[0050] [6-level odor intensity method] The odor intensity of the gas inside the airbag was scored using a 6-point odor intensity scale (0 points: odorless, 1 point: barely perceptible odor, 2 points: weak odor that can be identified, 3 points: easily perceptible odor, 4 points: strong odor, 5 points: intense odor). Odor intensity scoring was performed by 8 trained sensory evaluation monitors who passed an olfactory blindness test. The average score of the 6 monitors was used, excluding the highest score and the lowest score of the 1 monitor who gave the highest score. The results are shown in Table 1.

[0051] [9-point scale of pleasantness / unpleasantness] The comfort level of the gas inside the airbag was scored using a 9-point comfort / discomfort scale (-4 points: extremely uncomfortable, -3 points: very uncomfortable, -2 points: uncomfortable, -1 point: slightly uncomfortable, 0 points: neither comfortable nor uncomfortable, 1 point: slightly comfortable, 2 points: comfortable, 3 points: very comfortable, 4 points: extremely comfortable). The comfort / discomfort scores were given by the eight sensory evaluation monitors mentioned above, and the average score of the six monitors was used, excluding the one who gave the highest score and the one who gave the lowest score. The results are shown in Table 1.

[0052] <Metal Rusting Test> Each of the five metal pieces for the metal portion of dentures shown in Table 2 was placed in each well of a six-well plate. Three sets of six-well plates with each metal piece were prepared. In addition, one tablet of each oral appliance cleaning agent prepared in Example 6, Comparative Examples 4 and 6 was added to 150 ml of 25°C water to prepare a cleaning solution (Step 1). The prepared cleaning solution was poured into each well of the well plate so that the metal piece was completely submerged, the well plate was covered, and the well plate was left standing at 25°C for approximately 24 hours (Step 2). After approximately 24 hours, the cleaning solution in each well of the well plate was removed, water was added to each well, and the well plate was shaken to rinse the metal piece in each well with water (Step 3). Steps 1 to 3 were performed daily, and seven days after the start of the test, the change in the condition of the metal pieces was visually checked, and the change in the condition of the metal pieces was evaluated according to the following evaluation criteria. A: No change at all. B: Very slight rusting is observed. C: Clear rusting is observed. D: A large amount of rust is observed.

[0053] [Table 1]

[0054] The results in Table 1 show that the oral device cleaning agents of Examples 1 to 6, which contain cyclodextrin, have a superior deodorizing effect compared to the oral device cleaning agents of Comparative Examples 1 to 6, which do not contain cyclodextrin.

[0055] [Table 2]

[0056] As shown in Table 2, the oral appliance cleaner of Example 6 was found to effectively suppress rusting (discoloration due to rusting) of various metals used in the metal parts of oral appliances. Therefore, the oral appliance cleaner of Example 6 can be used in oral appliances having metal parts made of various metals, and has the advantage of not being limited in the types of oral appliances that can be used. On the other hand, it can be seen that the oral appliance cleaners of Comparative Examples 4 and 6 could not suppress rusting (discoloration due to rusting) of gold-silver-palladium alloy solder and silver alloy.

[0057] Prescription examples Tablet-type oral device cleaners were prepared with the compositions shown in Tables 3 and 4. In Tables 3 and 4, the units of the numerical values ​​indicating the amount of each component in each composition are weight percent. Also, in Tables 3 and 4, the amount in the cyclodextrin column represents the total amount of α-, β-, and γ-cyclodextrin. All of the oral device cleaners had excellent deodorizing power and were able to suppress rusting (discoloration due to rusting) of the various metals mentioned above.

[0058] [Table 3]

[0059] [Table 4]

Claims

1. (A) at least one carbonate compound selected from the group consisting of carbonates, bicarbonates, and double salts of bicarbonates and carbonates, (B) an acid, (C) an oxygen-based bleaching agent, and (D) cyclodextrin. The cyclodextrins are α-, β-, and γ-cyclodextrins. When the total amount of α-, β-, and γ-cyclodextrin is 100 parts by weight, the content of α-cyclodextrin is 25 to 35 parts by weight, the content of β-cyclodextrin is 45 to 60 parts by weight, and the content of γ-cyclodextrin is 15 to 20 parts by weight, as an oral device cleaner (excluding those containing catechins).

2. The oral appliance cleaning agent according to claim 1, wherein the oxygen-based bleaching agent is a monopersulfate.

3. Furthermore, the oral appliance cleaning agent according to claim 1, further comprising (E) a bleaching activator.

4. The oral appliance cleaning agent according to claim 3, wherein the bleaching activator is tetraacetylethylenediamine.

5. An oral appliance cleaning agent according to any one of claims 1 to 4, used for cleaning dentures having metal parts.

6. The oral appliance cleaning agent according to claim 5, wherein the denture is a partial denture.

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