KR100647974B1 - Improved tooth whitening systems for oral care conveniences - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an adhesive preparation having improved usability, and in a dental attachment whitening agent that adheres to a tooth and delivers the drug, it includes a drug layer and a saccharide layer and needs to be dissolved and removed by saliva in the oral cavity. The tooth-adhesive whitening preparation of the present invention, which is characterized in that there is no adhesive force at the time of attaching the teeth, can be used without contamination around the hands or lips, and during adhesion, the drug is released while the polymer in the drug layer is hydrated. The saccharide layer is not completely eroded by saliva so that it can be released only to this tooth, and at the point of completion of drug release, the saccharide layer is completely dissolved and does not need to be removed after use.

Tooth-adhesive preparations, tooth whitening, drug layers, interlayers. Sugar layer, peroxide.

Description

IMPROVED TOOTH WHITENING SYSTEMS FOR ORAL CARE CONVENIENCES}

1 is a schematic cross-sectional view showing a tooth attachment preparation having a two-layer structure according to an embodiment of the present invention,

Figure 2 is a schematic cross-sectional view showing a tooth attachment formulation having a three-layer structure according to another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

1: release agent 2: drug layer

3: intermediate layer 4: sugar layer

The present invention relates to a tooth adhesive preparation with improved usability, comprising a drug layer and a saccharide layer, which not only delivers the drug substance to the tooth by attaching to the tooth, but also dissolves after a certain time by saliva upon tooth attachment. Related to the preparation. More specifically, there is no adhesion at the time of attachment of the tooth, so it can be used without contamination around the hands or lips, and during adhesion, the drug is released as the polymer in the drug layer is hydrated. The present invention relates to a tooth-adhesive whitening agent having improved usability such that it is not completely eroded by saliva and the saccharide layer is completely dissolved at the time of drug release and does not need to be removed after use.

The most representative formulation for delivering drugs to the prior art is known as toothpaste. However, toothpaste has a problem in that the drug can not effectively deliver the medicinal substance to the tooth because the contact time between the tooth and the drug is short as 1 to 3 minutes.

Invented by Procter & Gamble, a method of delivering tooth whitening material to teeth, US Pat. Nos. 5,879,691, 5,891,453 and 5,989,569, and WO 98/55044 are thin and transparent instead of using a mouse tray. And a flexible whitening delivery system that pre-coates professional whitening gels or similar formulations with a tooth whitening agent on a flexible polyethylene strip, or is applied directly to a tooth or strip prior to use. Suggesting. This method improves simplicity in use because it does not use a mouse tray, and transparent and thin when worn. In practice, however, when using the patent and the product (Crest White Strips), there is a hand contamination by the gel at the time of attachment, and it is troublesome to remove it after desorption after use.

A substantial improvement of the method is disclosed in Korean Patent No. 10-0457271. It is a dry type tooth whitening agent, which has a matrix-type adhesion drug layer, and is based on the enamel layer of the tooth when the hydrophilic glass polymer is hydrated in a wet mouth by using a hydrophilic glassy polymer as a base. It is a new type of tooth whitening agent that allows strong adhesion and releases tooth whitening agent. In this formulation, there is a problem that there are water-soluble polymers in the support layer and they are hydrated to exhibit adhesion, but stickiness is also generated and previously contaminated to unwanted areas in the oral cavity.

The dry thin tooth whitening material delivery system of Korean Patent Publication No. 10-2003-0059552 is described as convenient to use because it does not need to be removed after use because it is dissolved after a certain time by saliva. However, the system uses "hydroxypropylmethylcellulose phthalate" as the support layer (protective film layer), which is characterized by being insoluble in saliva. See Handbook of Pharmaceutical Excipients, Fourth Edition, P301. ). Therefore, this system will not dissolve after a period of time by saliva. Furthermore, according to Example 1, acetone is used to dissolve hydroxypropylmethylcellulose phthalate, so that toxic acetone remains in the product after drying. Despite these risks, acetone is used as a solvent because it is not soluble in water or alcohol, so it will be more difficult to expect insoluble ingredients to dissolve in small amounts in the mouth.

U.S. Patent Publication US 2003/0228264 A1 also envisions a system in which a peroxide is placed inside a formulation, such as a gelatin capsule, attached to the tooth and the gelatin melts, or crushing the gelatin to deliver the internal drug substance to the tooth. It was. However, it is difficult to attach the preparation having the size and weight of the candy as soon as it comes into contact with the tooth, and in this case, it is cumbersome because it is necessary to hold it by hand or use an auxiliary device until it is attached. Moreover, while the process for preparing this formulation has been mentioned very briefly, it is believed that many processes are required to actually produce the product. That is, although it was mentioned that the formulation can be simply made by extrusion or the like, in practice, this process requires a high temperature, and there is a risk that the tooth whitening component peroxide is a very unstable component for heat.

Korean Patent No. 0440241 relates to a preparation for tooth whitening, wherein the erosive polymer formed by hydrogen bonding of a polymer containing a carboxyl group (-COOH) and a polymer containing a carbonyl group (-C = O) or an ether group (-O-) Disclosed is a tooth whitening preparation comprising a tooth adhesion layer comprising an erodible polymer complex and a tooth whitening component and an erosion rate control layer comprising a mixture of a hydrophilic polymer and a film-forming polymer. The formulation is described in the form of a film, characterized by releasing, eroding and disappearing the whitening component after tooth attachment. However, both the tooth adhesion layer and the erosion rate control layer are structured to include a water-insoluble or poorly soluble polymer together with the water-soluble polymer. In the case of the tooth adhesion layer, the tooth adhesion can be controlled even by using the physical properties of the water-soluble polymer alone. Nevertheless, it is not preferable to mix water-insoluble or poorly soluble polymers. In addition, the erosion rate control layer includes a water-soluble polymer to receive the drug or moisture component from the tooth adhesion layer, in which case the drug is not easily lost, and the water-soluble polymer is hydrated to generate adhesion to the mucosa of the tooth. There is an inconvenience of being attached. To prevent this, it is possible to increase the content of the water-insoluble or poorly soluble polymer, in which case it becomes difficult to completely melt the erosion rate control layer in a short time of about 30 minutes to attach the tooth whitening agent. In addition, this formulation erodes the layered components by hydration, and the separated parts remain in the mouth, resulting in poor usability. In conclusion, this formulation is not suitable for dissolving in the oral cavity after a certain period of time.

The present invention is to solve the problems of the conventional tooth whitening formulation, there is no adhesive force in the dry (dry) state during the storage and attachment of the product, while minimizing adhesion of the formulation to the unnecessary area while releasing the tooth whitening component during use At the same time, it is to provide a tooth-adhesive formulation of a convenient formulation that does not need to be slowly dissolved away and removed in the oral cavity.

In order to achieve the above object, in the present invention, in the tooth-attach whitening preparation for attaching to the tooth and delivering the drug, it comprises a drug layer and a saccharide layer and does not need to be dissolved and removed by saliva in the oral cavity. Provide formulations.

Here, the formulation of the present invention may further comprise a single layer or an intermediate layer consisting of two or more layers, and the intermediate layer may include a peroxide activator, a pigment, TiO ₂ , HAP (hydroxyapatite), a flavoring agent, bad breath inhibitor, and a perceptual hypersensitivity agent. , Fluorine, gum disease agents, or mixtures thereof.

Tooth-attachment preparations comprising a drug layer and a saccharide layer according to the present invention, there is no adhesive force when attaching the teeth can be used without contamination around the hands or lips, and during adhesion, the drug is released while the polymer in the drug layer is hydrated. During release, the saccharide layer is not completely eroded by saliva so that the drug can be released only to the teeth, and at the point of completion of drug release, the saccharide layer is completely dissolved and disappears in the oral cavity without the delivery or adhesion of the drug. There is no residue left in the mouth so it feels good.

1 is a schematic cross-sectional view showing a tooth attachment formulation having a two-layer structure according to the present invention, Figure 2 is a schematic cross-sectional view showing a tooth attachment formulation having a three-layer structure according to another embodiment of the present invention. As shown here, the tooth-bearing preparation of the present invention consists of a release agent (1), a drug layer (2) and a sugar layer (4), or a release agent (1), a drug layer (2), an intermediate layer (3) and a sugar It may consist of layer (4).

First, the release agent is a material having a certain level of rigidity, such as PET, PE, paper, etc., and helps to peel off the tooth attachment by coating on one or both sides of the release agent as necessary.

The drug layer is a dry type that has no adhesive strength or weak strength in the dry state, but releases of the whitening agent when the adhesive force is formed or begins to be hydrated when the whitening agent is hydrated by a small amount of water at the desired area. Although it is preferable, it is also possible to have a gel state which can be attached to a tooth by its viscosity. The polymer used herein should be hydrophilic or at least partially hydrophilic. Mainly used polymers include polyalkyl vinyl ether-maleic acid copolymer (PVM / MA copolymer; Gantrez AN 119, AN 139, S-97), polyvinyl alcohol, polyacrylic acid, poloxamer (Poloxamer 407; Pluronic, poly (ethylene) oxide) -poly (propylene oxide) -poly (ethylene oxide) triblock copolymer), polyethylene oxide (Polyox), polyvinylpyrrolidone-vinylacetate copolymer (PVP / VA copolymer; Luviskol VA, Plasdone S PVP / VA), Polyvinylpyrrolidone (PVP; K-15 to K-120), polyquaternium-11 (polyquaternium-11, Gafquat 755N), polyquaternium-39 (Merquat plus 3330), carboxypolymethylene ( Carbomer, Carbopol), hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin, sodium alginate alone or a mixture thereof. As solvents for these polymers, water, ethanol alone or mixtures thereof, and other organic solvents such as ethyl acetate, methylene chloride, isopropyl alcohol, acetonitrile alone, or mixtures thereof may be mixed and used in suitable proportions. have.

The tooth attachment must be flexible enough because it attaches directly to the tooth and must be easily shaped as the tooth flexes. Since some of these polymers are inferior in flexibility, an appropriate plasticizer can be added. Suitable plasticizers vary depending on the type of polymer and its formulation, but may include polypropylene glycol, glycerin or polyethylene glycol, which are commonly used.

Some of the less compatible with the peroxide in the hydrophilic polymer can be used by adding a peroxide stabilizer. Stabilizers to stabilize peroxides in formulations include alkyl sulfonate salts, alkyl carboxylate salts, alkyl diphenyloxide disulfonates, Span 20; Sorbitan Monolaurate, Span 40; Sorbitan Monopalmitate, Span 60 (Span 60; Sorbitan Monostearate), Span 80 (Sorbitan Monooleate), Span 85 (Spanbit, Sorbitan Trioleate), TWEEN (POE sorbitan fatty acid ester) system, glycerin fatty acid ester, organic acid monoglyceride, Sodium stearyl lactate, polysorbate (POE (20) Sorbitan Monolaurate, POE (20) Sorbitan Monostearate, POE (20) Sorbitan Monooleate, POE (20) Sorbitan Tristearate, POE (20) Sorbitan Trioleate)). Among these, 1 type or more can be mixed and used.

Examples of the tooth whitening component added to the drug layer include peroxides, polyphosphates, enzymes, and chlorine bleaches. Peroxides include hydrogen peroxide, carbamide peroxide, calcium peroxide, sodium percarbonate, sodium perborate, sodium perorate and tetrasodium pyrophosphate peroxidate and mixtures thereof It can select from the group which consists of these, and can use. Phosphates and enzymes are effective in removing stains in the enamel adhesion layer. Polyphosphates include sodium pyrophosphate (TSPP), sodium pyrophosphate (SAPP), sodium hexametaphosphate (SHMP), sodium tripolyphosphate (STP), sodium pyrophosphate One or two or more of potassium potassium tripolyphosphate (SKTP), potassium pyrophosphate (TKPP), and ultraphosphate acidic sodium meta-polyphosphate and acidic sodium polyphosphate; Can be used. In general, polyphosphate is known to be effective as a tartar control agent in toothpaste to inhibit tartar formation or to remove tartar. In addition, they are good chelating agents of metals, which can effectively remove tooth stains produced by metals such as iron, calcium, and magnesium in food or working environment, and contribute to the improvement of the whitening effect. The use of these polyphosphates in the formulations of the present invention not only improves the whitening effect by eliminating light extrinsic stains, but also prolongs the contact time between teeth and condensed phosphates, which is effective in inhibiting tartar formation or removing tartar. It is expected to be. Chlorine-based bleaches include sodium chlorite and sodium hypochlorite. In addition, papain, vitamin E and sodium bicarbonate may also be used as a whitening agent.

It is also possible to add a chelating agent such as EDTA, sodium citrate or Dequest phosphonates to the drug layer for the purpose of improving the time stability of the peroxide.

In addition, the thickness of the drug layer is preferably 5 to 500 µm, but less than 5 µm, the amount of the whitening agent to be contained is low, so that the tooth whitening effect is low. More preferable thickness is 30-150 micrometers.

Sugar layer in the preparation according to the present invention serves to protect and isolate the interior (intermediate layer, drug layer) from chemical and physical contact such as saliva, oral contact. In order to perform this function, the material should be slowly dissolved in saliva, but preferably does not exhibit sticky viscosity as in the case of hydrated polymers. In addition, the water and the hydrated polymer contained in the drug layer should not dissolve well and should have good stability with the main component hydrogen peroxide.

Examples of components that can be used for the saccharide layer include maltodextrin, xylitol, sorbitol, sucrose, and malitol as saccharides, and hydroxypropylmethyl cellulose, hydroxypropyl cellulose, polyethylene oxide, polymethacrylate, and polyacrylic acid as polymers. , Xanthan gum, carboxymethyl cellulose, pullulan, polyvinyl acid, polyvinyl acrylate, gelatin, or shellac component can be added to control the adhesion time and physical properties. It is preferable to contain the saccharides in an amount of 3 to 85%. If the saccharide content is less than 3%, the sugar content is low, and when dissolved by saliva, a sticky phenomenon occurs and the main component of the drug layer may be released in an unwanted direction. On the other hand, when the content of sugar is higher than 85%, the flexibility of the film during the manufacturing and use is easily broken and the phenomenon is difficult to produce. The sugars can be used alone, but when sugars are used alone, they are poor in viscosity and thus have poor economics such as extrusion and casting. In order to overcome this problem, a water-soluble polymer may be used, and the water-soluble polymer preferably has a feature of being hydrated by moisture. In addition, the matrix dissolution rate can be controlled by using a mixture of polymers and sugars. This is because the swelling rate is different between sugars and polymers. In addition, the -OH group of the sugar exhibits an effect of protecting the cells in the oral cavity by scavenging radicals of the peroxide.

The thickness of the saccharide layer is preferably in the range of 2 to 700 μm, but less than 2 μm serves as a protect barrier, and when thicker than 700 μm, flexibility and dissolution rate are not appropriate.

The saccharide layer can be prepared by extrusion molding, casting, rolling, etc. Among them, a casting method of mixing a saccharide component and an additive with a solvent and drying it to form a sheet. This is the most effective.

In the dental attachment preparation according to the invention, the intermediate layer can be located between the drug layer and the saccharide layer. The intermediate layer enhances the flexibility of the sugar layer, which improves the convenience of use in the oral cavity when the tooth is attached, and supplements the drug layer when the sugar layer is likely to dissolve and disappear too quickly by saliva in a special oral environment such as drinking a drink. It serves to protect and isolate. In addition, it serves to isolate the drug layer and the saccharide layer, and serves to prevent the highly reactive peroxide of the drug layer and the like from reacting with the microcomponents of the saccharide to reduce the time stability. Another important use of the intermediate layer is that it can include components in the intermediate layer that are difficult to add together to the drug layer because of the highly reactive peroxides of the drug layer. General examples of such ingredients include peroxide activators, pigments, TiO ₂ , HAP (hydroxyapatite), fragrances, bad breath inhibitors, perceptual hypersensitivity agents, fluorine, gum disease agents and the like. If the compatibility between these components is poor, it is also possible to administer the intermediate layer in several layers.

In the intermediate layer, polymers used in the drug layer may be used according to the purpose. That is, the polymer usable in the intermediate layer may be polyalkyl vinyl ether-maleic acid copolymer (PVM / MA copolymer), polyvinyl alcohol, polyacrylic acid, poloxamer (poly (ethylene oxide) -poly (propylene oxide) -poly ( ethylene oxide) triblock copolymer), polyethylene oxide, polyvinylpyrrolidone-vinyl acetate copolymer (PVP / VA copolymer), polyvinylpyrrolidone (PVP), polyquaternium-11, polyquaternium -39 (polyquaternium-39), carboxypolymethylene, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin, alginate, cellulose acetate phthalate, shellac, polyvinyl Acetate, ethyl cellulose, poly methyl methacrylate, methacryloylethyl betaine / methacrylate copolymer, methacrylic acid There may be mentioned polymer (methacrylic acid copolymer), or aminoalkyl methacrylate copolymer (aminoalkyl methacrylate copolymer) and the like.

The thickness of the intermediate layer is preferably about 2 ~ 300 ㎛, less than 2 ㎛ serves as a protective barrier, thicker than 300 ㎛ requires a lot of time to melt in the oral cavity.

Hereinafter, the present invention will be described in more detail with preferred embodiments of the present invention. However, these examples are only illustrative to aid the understanding of the present invention, and the scope of the present invention is not limited thereto.

Examples 1-4 and Comparative Examples 1-3

Tooth attachment whitening agents of Examples 1 to 4 and Comparative Examples 1 to 3 were prepared with the composition as described below.

Preparation method: The drug layer solution was apply | coated on a mold release agent, In the case of an Example, an intermediate | middle layer and / or a saccharide layer solution were apply | coated, In the case of a comparative example, after apply | coating a support layer solution, it dried. In this Example and Comparative Example, the thickness of each layer was prepared to be 60 ~ 80 ㎛.

(1) Example 1

Drug layer preparation solution: Polyvinyl pyrrolidone 22%, hydrogen peroxide 5%, glycerin 10%, ethanol 30%, water was added to make 100%.

Sugar layer preparation solution: 20% of xylitol, 10% of hydroxypropylmethyl cellulose, 35% of water and ethanol were added to make 100%.

(2) Example 2

Drug layer preparation solution: 22% polyvinyl pyrrolidone, 5% hydrogen peroxide, 10% glycerin, 30% ethanol, 0.5% fragrance, purified water was added to make 100%.

Sugar layer preparation solution: Purified water was added to 8% sorbitol, 3% polyethylene glycol, and 10% hydroxypropyl cellulose to make 100%.

(3) Example 3

Drug layer preparation solution: 20% of Gantrez S-97, 15% of sodium percarbonate, 3% of propylene glycol, and purified water were added to make 100%.

Sugar layer production solution: Purified water was added to 17% maltodextrin and 5% polyethylene glycol to make 100%.

Intermediate layer preparation solution: 2% of carboxymethyl cellulose (Na-CMC), 1% of polyethylene glycol 400, 1% of l -menthol (fragrance), and purified water were added to make 100%.

(4) Example 4

Drug layer preparation solution: 22% polyvinyl pyrrolidone, 5% hydrogen peroxide, 10% glycerin, 30% ethanol, 0.5% fragrance, purified water were added to make 100%.

Sugar layer production solution: Purified water was added to 8% sorbitol and 3% polyethylene glycol to make 100%.

(5) Comparative Example 1

Drug layer preparation solution: Polyvinyl pyrrolidone 16%, hydrogen peroxide 5%, sorbitan monooleate 1%, glycerin 10%, ethanol 30%, water was added to 100%.

Support layer preparation solution: 11% of hydroxypropyl cellulose, 5% of polyethylene glycol, and ethanol were added to make 100%.

(6) Comparative Example 2

Drug layer preparation solution: Polyvinyl pyrrolidone 17%, acrylic acid copolymer 2%, hydrogen peroxide 4%, propylene glycol 3%, sorbitan monooleate 1%, purified water, ethanol was added to 100%.

Support layer preparation solution: 11% of hydroxypropyl cellulose, 10% of methacrylic acid copolymer, 6% of polyethylene glycol, and ethanol were added to make 100%.

(7) Comparative Example 3

Drug layer preparation solution: 10% of hydroxypropyl cellulose, 20% of hydroxyethyl cellulose, 4% of hydrogen peroxide, 1% of TSPP, 5% of glycerin, and water were added to make 100%.

Support layer preparation solution: 20% ethyl cellulose, SAPP 1%, purified water 30%, ethanol was added to make 100%.

Effect Test Example 1 Usability Evaluation (Consumer Test)

In order to measure the ease of use, usability was tested for the general public. It was measured on a 5-point scale, and the highest satisfaction score was 5 points. The ease of use was evaluated with the tooth whitening agents prepared in Examples 1-3 and Comparative Examples 1-3.

Subject: 30 men and women each experimental group

Duration: 1 month, 2 times a day (morning and afternoon)

One time use and method: Tooth whitening agent was attached and evaluated in two stages during and after use.

Table 1 below shows the results of the usability evaluation.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Feeling in use 4.1 4.1 4.3 3.5 2.2 2.4 3.2 after use 4.2 4.2 4.4 3.5 2.5 2.8 2.2

As shown in Table 1 above, the "in use" item scores in Examples 1 to 3 were evenly higher than in the comparative example. This is due to the sugar layer, the sugar layer is slowly dissolved by saliva, but does not show the sticky properties as in the case of the comparative example, it is judged that the feeling of use is excellent. On the other hand, Comparative Examples 1 and 2, although the type gradually melts, because the polymer is hydrated inevitably exhibits the adhesive force, it was inconvenient to bury the palate, the inside of the lips and the like during use. Comparative Example 3 has a relatively high score in Comparative Examples because the support layer is not melted. In other words, it does not melt rather than incompletely soluble prescriptions can be seen that the better feeling.

Effect Test Example 2 : Whitening Effect

The whitening effect of the toothpaste whitening agent was determined by the following method:

(1) Preparation of Contaminated Hydroxyapatite (HAP) Tablet Specimen

Tablets of hydroxyapatite powder were made by IR press, sintered at 1000 ° C, and then molded with epoxy resin to make a resin. The surface was etched with strong acid, and then in a TSP (trypticase soy broth) solution in which tea, coffee, iron and mucin were dissolved. The process of soaking and drying the specimens was repeated and this operation continued for one week to contaminate the specimens. The contaminated specimens were washed lightly with a toothbrush in running water to remove any contaminants that were easily dissolved or removed by water, and then dried at room temperature.

(2) whitening effect evaluation method

The initial L value of the contaminated HAP tablet specimen (L indicates brightness, white at 100 and black at 0) was measured with a colorimeter, and the specimen attached to the tooth-attached whitening agent prepared in Examples and Comparative Examples was soaked in water. In a constant temperature and humidity chamber with a temperature of 37 ° C and a humidity of 95% to resemble the actual oral condition.After 4 hours, remove the tooth whitening agent for teeth whitening and lightly brush it with running water and then room temperature. L value was measured by drying at. The difference ΔL of the L value before and after applying the tooth whitening agent is calculated (ΔL means that the larger the value, the more effective the tooth whitening), and the results are shown in Table 2 below.

division ΔL (Tooth Brightness Change) Remarks Example Example 1 40 10 times average Example 2 43 10 times average Example 3 51 10 times average Example 4 40 10 times average Comparative example Comparative Example 1 40 10 times average Comparative Example 2 32 10 times average Comparative Example 3 50 10 times average

In Table 2 above, it can be seen that the tooth brightness change of Example 3 and Comparative Example 3 is larger, which is related to the intermediate layer or the supporting layer. That is, the first and second embodiments are different from the third embodiment because the intermediate layer has no intermediate layer, so that the drug can be released to other places. In Example 4, there was no water-soluble polymer in the saccharide layer, so the drug was not released slowly. Therefore, the effect was relatively low. On the other hand, Comparative Example 3 is a component in which the supporting layer is not melted, and the drug can be released only to the tooth. In the case of Comparative Example 2, in order to slow down the decomposition rate of the chemicals, a component which was hardly dissolved in the water was used. As a result, the disintegration and dissipation power of the entire chemical layer was interlocked, leading to a lowered level.

Effect Test Example 3 Stability with Time

The temporal stability at high temperature (40 ° C.) of hydrogen peroxide, a tooth whitening component, in the tooth-adhesive whitening preparations prepared in Examples and Comparative Examples was evaluated by the following method:

Take a mixed solvent that can dissolve all layers of the tooth whitening agent in an Erlenmeyer flask, accurately weigh the appropriate amount of tooth whitening agent and dissolve it completely, add about 5 ml of 6 N hydrochloric acid and dissolve about 2 g of potassium iodide in a cool dark place. After standing for about 1 hour, the peroxide content in the tooth whitening agent was quantified by titration with 50 mM sodium thiosulfate solution. The results are shown in Table 3 below. Here, storage temperature was 40 ℃, humidity was 75% constant temperature and humidity, and evaluated after 4 weeks storage in Al-Pouch.

division Hydrogen peroxide remaining amount (%) Remarks Example Example 1 90 10 times average Example 2 91 10 times average Example 3 92 10 times average Comparative example Comparative Example 1 86 10 times average Comparative Example 2 78 10 times average Comparative Example 3 87 10 times average

In Table 3 above, the Bodo, the cross-linking quality is similar to the Example and Comparative Example. The reason why Example 3 is the best is that the saccharide layer does not have direct contact with hydrogen peroxide in the drug layer and appears to be relatively high in stability. Comparative Example 2 was relatively poor in stability over time, which is inferred to be due to the use of more than two species of polymers, which resulted in a complicated process, and more impurities such as impurities were mixed and reacted with highly reactive hydrogen peroxide.

As described above, the tooth-adhesive whitening preparation of the present invention comprising a drug layer and a saccharide layer which protects the drug layer as an agent to be used by attaching to a tooth has no adhesive force at the time of tooth attachment and thus has a circumference of hands or lips. It can be used without contamination to the drug, and during adhesion, the drug is released as the polymer in the drug layer is hydrated. During drug release, the saccharide layer is not completely eroded by saliva so that the drug can be released only to the teeth. The layer melts completely and does not need to be removed after use.

In addition, in the tooth-adhesive whitening preparation of the present invention further comprising an intermediate layer between the drug layer and the saccharide layer, the intermediate layer may be used for the purpose of improving aging stability of the peroxide and adding an additive.

Claims (10)

A tooth-attach whitening preparation for attaching to a tooth and delivering a drug, comprising a drug layer and a saccharide layer and not needing to be dissolved and removed by saliva in the oral cavity. The toothpaste whitening preparation according to claim 1, wherein the saccharide layer comprises a saccharide and a polymer. The tooth-adhesive whitening preparation according to claim 1, wherein the drug layer is dry or gel. The method of claim 1, wherein the drug layer in the drug layer is hydrogen peroxide (hydrogen peroxide), carbamide peroxide, calcium peroxide, sodium percarbonate, sodium perborate, fatigue peroxide Sodium Phosphate (tetrasodium pyrophosphate peroxidate), Sodium Pyrophosphate (TSPP), Sodium Pyrophosphate (SAPP), Sodium Metaphosphate (SHMP), Sodium Tripolyphosphate (STP) Sodium potassium tripolyphosphate (SKTP), potassium pyrophosphate (TKPP), acidic sodium meta-polyphosphate, acidic sodium polyphosphate, papain, vitamin E, sodium bicarbonate, suba A tooth-attach whitening agent comprising sodium chlorate, sodium hypochlorite, or a mixture thereof. The method of claim 1, wherein the drug layer is a polyalkylvinyl ether-maleic acid copolymer (PVM / MA copolymer), polyvinyl alcohol, polyacrylic acid, poloxamer (poly (ethylene oxide) -poly (propylene oxide)- poly (ethylene oxide) triblock copolymer), polyethylene oxide, polyvinylpyrrolidone-vinylacetate copolymer (PVP / VA copolymer), polyvinylpyrrolidone (PVP), polyquaternium-11, poly Quaternium-39, carboxypolymethylene, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin, alginate, or mixtures thereof Tooth-adhesive whitening agent. The saccharide layer comprises maltodextrin, xylitol, sorbitol, sucrose, malitol, or a mixture thereof as a saccharide, and hydroxypropylmethyl cellulose, hydroxypropyl cellulose, polyethylene as a polymer. A tooth-attach whitening agent comprising an oxide, poly methacrylate, poly acrylic acid, xanthan gum, carboxymethyl cellulose, pullulan, polyvinic acid, polyvinyl acrylate, gelatin, shellac, or mixtures thereof. The tooth-adhesive whitening preparation according to claim 1, characterized in that it further comprises an intermediate layer. 8. A polyalkyl vinyl ether-maleic acid copolymer (PVM / MA copolymer), polyvinyl alcohol, polyacrylic acid, poloxamer (poly (ethylene oxide) -poly (propylene oxide) -poly (ethylene oxide) triblock copolymer), polyethylene oxide, polyvinylpyrrolidone-vinyl acetate copolymer (PVP / VA copolymer), polyvinylpyrrolidone (PVP), polyquaternium-11, polyquater Nium-39 (polyquaternium-39), carboxypolymethylene, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin, sodium alginate, cellulose acetate phthalate, shellac, polyacrylamide Vinyl acetate, ethyl cellulose, poly methyl methacrylate, methacryloylethyl betaine / methacrylate copolymer, methacrylic acid A tooth-attach whitening agent comprising a copolymer (methacrylic acid copolymer), an aminoalkyl methacrylate copolymer, or a mixture thereof. The method of claim 7, wherein the interlayer comprises a peroxide activator, a pigment, TiO ₂ , HAP (hydroxyapatite), fragrances, bad breath inhibitors, perceptual hypersensitivity agents, fluorine, gum disease agents, or mixtures thereof. Tooth-attach whitening agent. 8. The tooth-adhesive whitening preparation according to claim 7, wherein the intermediate layer consists of a single layer or two layers.

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