KR20060089890A - Antibacterial oral composition - Google Patents

Abstract

The present invention relates to a toothpaste composition having a superior antimicrobial effect by containing a nonionic antimicrobial agent, and by using hyaluronic acid and its metal salt to increase the oral delivery and residual effect of the nonionic antimicrobial agent to increase the growth of caries, gum disease and bad breath causing bacteria By effectively suppressing the disease, the disease can be prevented and alleviated.

Nonionic Antimicrobial Agent, Triclosan, Timols, Phenols, Hyaluronic Acid, Bad Breath Control, Toothpaste Composition

Description

Oral composition excellent in antimicrobial effect

The present invention relates to a composition for oral cavity which can act more effectively on bacteria causing oral disease by prolonging the residence time of the nonionic antimicrobial agent in the oral cavity.

Bacteria in the oral cavity form plaques, which are formed throughout the teeth, and in particular, the plaque between the gums and the teeth is not only removed by normal brushing, but also calcified and turned into tartar, causing gum disease. Becomes

As a method for inhibiting the formation of plaque, a method of promoting bacterial growth inhibition using an antimicrobial agent has been proposed, and various attempts have been made to apply the antimicrobial agent to oral products.

U.S. Patent No. 4,022,880 suggests that the use of zinc compounds as anti-tartar and ionic antimicrobial agents inhibits plaque formation. The antimicrobial agents disclosed in this patent include cationic guanides and quaternary ammonium compounds, nonionic halogenated salicynilides and halogenated hydroxydiphenyl ethers. In addition, the cationic antimicrobial agents Chlorohexidine, Benzthonium chloride, and Cetylpyridium Chloride have been studied and applied to oral products such as ferns. Ingredient.

However, when used with an anionic substance contained in a formulation such as toothpaste, there is a problem in that the activity of the cationic antimicrobial agent decreases rapidly and the antimicrobial effect is not expressed. The research and commercial application of 2,4,4'-trichloro-2'hydroxy diphenyl ether (hereinafter referred to as triclosan), which is a kind of (halogenated hydroxydiphenyl ether), has been most active.

U.S. Patent No. 4,894,220 discloses benzoic esters, halogenated carbanilide phenols and their analogs, in addition to the halogenated salicynilides and halogenated hydroxydiphenyl ethers described above, Alkyl and aralkyl phenols (Alkyl and Aralkyl Phenol) class of antimicrobial agents have been proposed, according to the Republic of Korea Patent No. 0,396,526, Xanthorrhizol is an antibacterial, anti-inflammatory component is introduced from natural plants.

Among these nonionic antimicrobial agents, various attempts have been made to improve the oral residual effect of triclosan, in particular, and Japanese Patent No. 2,806,031 discloses a method of increasing the oral residual effect of triclosan by combining alginic acid having a specific molecular weight with triclosan. Korean Patent No. 0,384,103 discloses a-hydroxy propanoic acid, fumaric acid, DL-maleic acid, citric acid, gluconic acid, DL-alanine, DL-glutamic acid and metal salts thereof, which have an intramolecular carboxyl group and are polar in aqueous solution. A method of increasing the residual effect of triclosan by using a mixed material and a carboxy alkyl cellulose having an average substitution degree of 1.2 to 1.6 and its salt was proposed. In the case of sodium alginate and carboxy alkyl cellulose, adhesion to mucous membranes and teeth is very low. Because it is not high Triclosan practical as well as difficult to expect the effect of rising residual technological advancement as a substance that has been used for a long time as the basic material to keep the viscosity of the paste can also be low.

In addition, U. S. Patent No. 5,288, 480 shows that a copolymer of methylvinyl ether-maleic anhydride (hereinafter referred to as PVM / MA copolymer) may improve oral delivery and residual effects of nonionic antimicrobials. Said that. This component is used as an adhesive for dentures, and it is expected that the remaining effect of adhesion in the oral cavity will be excellent, and the technique has been proved for a number of laboratory and clinical effects, and it has been a commercially successful technique. have. However, the PVM / MA copolymer has an unpleasant odor and when a large amount is applied, the solubility in water is rather low, so that the product must be sufficiently dissolved using a separate solvent such as ethanol to prepare a product.

Unlike the above techniques using water-soluble polymers, a technique using a material having a relatively high molecular weight and a hydrophilic group and a hydrophobic group has been suggested. However, Korean Patent Publication No. 1998-0008210 discloses ursodesoxycholic acid (ursodesoxycholic). acid) is increased with triclosan, and the antibacterial effect of triclosan is increased. In Korean Patent Publication No. 2003-0088227, dipotassium glycyrrhizinate increases the residual effect of triclosan after oral adsorption and washing. The effect is said to be superior to the PVM / MA copolymer presented in US Pat. No. 5,288,480. However, urdesoxycholine acid and glycyrrhizin dipotassium have their own pharmacological effects and thus cannot be used indefinitely.

The present invention seeks to provide a safe and pharmaceutically convenient method for realizing an equivalent effect or more while compensating for the disadvantages of the PVM / MA copolymer in the method of enhancing the intraoral delivery and residual effect of the nonionic antimicrobial agent.

Oral composition of the present invention, hyaluronic acid (Hyaluronic acid) or a metal salt thereof to increase the intraoral delivery and residual effect of nonionic antimicrobial agents such as triclosan effectively inhibits the formation of plaque and ultimately the development of gum disease and tartar formation Suppress it.

Hyaluronic acid and its metal salt used in the composition for oral cavity of the present invention is used in an amount of 0.01% to 2% by weight in the composition, the effect is less than these concentration ranges, and the cost is increased compared to the effect increase factor above. In addition, excessive viscosity is formed, which results in poor usability of the composition.

The type and the amount of abrasive used in the present invention are precipitated silica, silica gel, zirconium silicate, calcium dihydrogen phosphate, calcium dihydrogen phosphate, hydrous alumina, hard calcium carbonate, heavy calcium carbonate, calcium pyrophosphate, insoluble metaphosphate and At least one member selected from aluminum silicate was used in the range of 5 to 60% by weight of the total weight of the toothpaste composition so that the final product showed a value of 20 to 100. The particle size also varies depending on the type of abrasive, but the average particle size was 20 microns. It is preferable to use the following.

Although there is no standard standard for toothpaste polishing, comparatively comparing commercially available toothpaste, it can be classified as low polishing of less than 50, medium polishing of less than 50 to 100, and high polishing of more than 100. Toothpaste with abrasiveness can cause cervical hypersensitivity by causing cervical abrasion for long periods of time. Therefore, it is desirable to maintain a low polishing level. However, if the polishing degree is less than 30, the plaque removal effect is weak. May cause deterioration of the oral environment.

The use of humectants in toothpaste is an essential ingredient in the preparation of ointment formulations, which prevents the toothpaste from drying and solidifying when exposed to the air, and gives the surface of the toothpaste a shine, as well as a sweetening effect when brushing. In the present invention, at least one of concentrated glycerin (98%), glycerin (85%), sorbitol aqueous solution (70%), amorphous sorbitol aqueous solution (70%), ziritol, polyethylene glycols and propylene glycol is 20 To 70% by weight.

In addition, a conventional dentifrice composition may use a suitable medicinal ingredient depending on the purpose of use. The use of fluoride to form a fluorine film on the teeth to be strong against acids (such as lactic acid), which is a metabolite of caries, may be an essential ingredient in the dentifrice composition. In addition, as a method for preventing periodontal disease, aminocapronic acid, tranexamic acid, allantoin and allantoin derivatives having hemostatic action and various vitamins may be used simultaneously.

The use of binders in toothpaste is essential for ointmental toothpaste as it prevents the separation of solid powder and liquid components, and any water-soluble polymer can be used. Commonly used components include sodium carboxymethyl cellulose derived from cellulose, carrageenan extracted from seaweed, and xanthan gum obtained from metabolism of microorganisms.

Preservatives can help to prolong toothpaste preservation by preventing microbial contamination. Representatives include sodium ansuccinate and parabens.

In addition, the use of foaming agent to enhance the feeling of use of the product, to help the cleaning action, and to act to easily remove foreign substances in the oral cavity by speeding up the dispersion and penetration of other active ingredients and reducing the interfacial tension. As the foaming agent, sodium lauryl sulfate, an anionic surfactant, is mainly used, and a copolymer of polyoxyethylene polyoxypropylene (poloxamer), polyoxyethylene-cured castor oil, and polyoxy, which is auxiliary nonionic surfactant depending on the characteristics of the formulation. Ethylene sorbitan fatty acid ester and the like are used.

In addition, in order to improve the feel of the toothpaste composition according to the present invention can be used flavors, sweeteners and pigments, etc. For this purpose, the use of edible flavors is essential, peppermint oil, spearmint oil, sage, eucalyptol, methylsalley Silates, fruit extracts, and the like.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, these examples are only for aiding the understanding of the present invention, and do not limit the scope of the present invention. In this experiment, toothpaste composition was used, abrasive was silica, wetting agent was amorphous sorbitol solution, binder was carboxymethylcellulose, sweetener was saccharin, foam was fixed with sodium lauryl sulfate, preservative was fixed with sodium benzoate, Different combinations and varying contents showed little difference in the effects of the present invention.

In the present invention, sodium hyaluronate was used to increase the intraoral delivery and residual effect of triclosan, and the effect was compared with that of the PVM / MA copolymer.

<Example 1 and Comparative Examples 1 and 2>

                                                        (Unit: weight%) division Ingredient Name Example Comparative example One One 2 abrasive Precipitated silica 20 20 20 Humectant Amorphous Sorbitol Liquid (70%) 50 50 50 Foam Sodium Lauryl Sulfate 2 2 2 Binder Carboxymethyl Cellulose 0.8 0.8 0.8 Efficacy Supplements Sodium hyaluronate 0.02 - - PVM / MA Copolymer - - 2 Medicinal agents Sodium fluoride 0.22 0.22 0.22 Triclosan 0.3 0.3 0.3 additive Spices One One One saccharin 0.25 0.25 0.25 solvent ethanol - - One Purified water To 100

Experimental Example 1: Evaluation of tooth adsorption and residual effect of nonionic antimicrobial

In order to measure the tooth adsorption and residual effect of the antimicrobial agent by using the composition of Example 1 and Comparative Examples 1 to 2 of Table 1, after preparing a hydroxyapatite (Hydroxyapatite) in the form of a disc of 10mm diameter with a tablet molding machine, 1,300 After sintering at 1 ° C. for 1 hour, a hydroxyapatite disk was prepared, and then immersed in a mucin 1% solution for 24 hours to be coated with mucin.

(1) Evaluation of tooth adsorption effect of nonionic antimicrobial

   ① Toothpaste compositions of Example 1 and Comparative Examples 1 to 2 are made into a slurry of saliva: toothpaste = 1: 2, and then poured into a container and stirred.

   ② Toothpaste slurry was treated with hydroxyapatite disk coated with mucin for 1 hour.

   ③ The treated hydroxyapatite disc was washed three times with purified water, and then extracted with trichloroic acid remaining on the surface using methanol, and quantified by HPLC.

(2) Evaluation of Tooth Retention Effect of Nonionic Antimicrobial Agents

   ① Toothpaste compositions of Example 1 and Comparative Examples 1 to 2 are made into a slurry of saliva: toothpaste = 1: 2, and then poured into a container and stirred.

   ② Toothpaste slurry was treated with hydroxyapatite disk coated with mucin for 1 hour.

   ③ Wash the treated hydroxyapatite disk three times with purified water and again immerse in 1% mucin solution and treat for 3 hours.

   ④ The hydroxyapatite disk deposited on the mucin solution was washed three times with purified water, followed by extracting the antimicrobial agent remaining on the surface using methanol, and quantitatively using HPLC.

The results at this time are shown in Table 2.

sample Initial adsorption amount (ppm) Residual amount (ppm) Example One 65.3 39.5 Comparative example One 12.0 5.6 2 44.8 14.9

Comparing Example 1 with Comparative Example 1 and Comparative Example 2 Example 1 has the highest initial adsorption amount and residual amount, based on which the composition according to the invention delivers the nonionic antimicrobial agent to the tooth surface well and the retention time It can also be seen that the increase.

Experimental Example 2: Evaluation of the mucosal residual effect of the nonionic antimicrobial agent

In order to measure the residual effect of the antimicrobial agent on the mucosa using the composition of Example 1 and Comparative Examples 1 to 2 of Table 1, the experiment was carried out using the cyst of the hamster.

(1) Evaluation of mucosal adsorption effect of nonionic antimicrobial agents

   ① Toothpaste compositions of Example 1 and Comparative Examples 1 to 2 are made into a slurry of saliva: toothpaste = 1: 2, and then poured into a container and stirred.

   ② hamster bulge was extracted and treated with toothpaste slurry for 30 minutes.

   ③ The treated hamster vesicles were washed three times, and then extracted with antimicrobial agent remaining on the surface using methanol and quantified using HPLC.

(2) Evaluation of Tooth Retention Effect of Nonionic Antimicrobial Agents

   ① Toothpaste compositions of Example 1 and Comparative Examples 1 to 2 are made into a slurry of saliva: toothpaste = 1: 2, and then poured into a container and stirred.

   ② hamster bulge was extracted and treated with toothpaste slurry for 30 minutes.

   ③ Wash the treated hamster vesicles three times with purified water and then immerse them in 1% mucin solution for 3 hours.

   ④ The hamster vesicles deposited in the mucin solution were washed three times with purified water, and then extracted with antimicrobial agent remaining on the surface using methanol, and then quantified by HPLC.

The results at this time are shown in Table 3.

sample Initial adsorption amount (ppm) Residual amount (ppm) Example One 34.8 12.9 Comparative example One 11.3 5.6 2 35.6 13.8

Comparing Example 1, Comparative Example 1 and Comparative Example 2 Example 1 and Comparative Example 2 has a similar initial adsorption amount and residual amount, based on this composition according to the present invention using a nonionic antimicrobial agent PVM / MA It can be seen that it is well delivered to the mucosa at a similar level as the composition and increases the residence time.

It can be seen from the above two experiments that hyaluronic acid and its salts increase the adsorption and residual effect of the triclosan tooth and oral mucosa, which is a unique structure in which hyaluronic acid has a large number of carboxyl groups and hydroxyl groups. It is believed to be due to its excellent ability to adsorb teeth and mucous membranes and to retain for a long time, as well as the ability to capture hydrophobic nonionic antimicrobial agents within a large chain structure.

The present invention improves the intraoral delivery and residual effect of the nonionic antimicrobial agent to effectively and continuously remove the bacteria in the oral cavity, thereby inhibiting the formation of plaque, thereby preventing gum disease and suppressing the formation of tartar. Blocking outbreaks can increase overall oral health.

Claims (2)

A composition for oral cavity containing a nonionic antimicrobial agent, The composition for oral cavity containing 0.01-2 weight% of hyaluronic acid or its metal salt. The composition for oral cavity of Claim 1 whose nonionic antimicrobial agent is triclosan.