Periodontal Cosmetic Composition

Abstract

Periodontal cosmetic composition. The invention relates to a periodontal cosmetic composition in the form of a mixture of dry powders of sodium bicarbonate, in a content greater than 97% by weight relative to the total weight of the composition; and of sodium percarbonate, in a content greater than 0% and less than or equal to 3% by weight relative to the total weight of the composition.

Description

Title of the invention: Periodontal Cosmetic Composition

[0001] The present invention relates to the general field of periodontal treatment. Periodontal diseases are infectious diseases affecting the periodontium, that is, the tissue that supports the teeth, particularly the gums, alveolar bone, periodontal ligament, and cementum. Periodontal disease is primarily caused by bacteria that accumulate at the base of the tooth and multiply. However, neutralizing these bacteria in this area can be difficult because a bacterial ecosystem develops, comprising both simple bacterial colonization and a biofilm made up of colonies of various bacteria that cover the primary infection and render conventional chemical treatments ineffective. This disease causes the alveolar bone around the teeth to slowly but progressively destroy, ultimately leading to the loss of the affected tooth.Epidemiological studies conducted in France estimate that approximately 16 million adults in the 35-64 age group are potentially affected by this disease. These same studies suggest that between 800,000 and 1,000,000 individuals in France may be affected by the severe form of this disease.

[0002] Although treatments for this condition exist, they are lengthy, expensive, and sometimes painful. Therefore, preventive or prophylactic treatments have been proposed in the past, consisting of limiting the risk of contamination, particularly at the base of the tooth, through regular brushing, possibly accompanied by the application of solutions containing substances that destroy the cell membrane of bacteria, for example, mouthwashes containing surfactants. However, the bacteria responsible for this periodontal attack are Gram-negative and are often protected by a biofilm, making any chemical treatment very difficult.

[0003] Another treatment is also known, which consists of manually preparing a paste containing hydrogen peroxide mixed with sodium bicarbonate. The resulting paste must have a consistency and viscosity suitable for brushing the base of the tooth. It is prepared by the patient just before use by taking, for example, a teaspoon of sodium bicarbonate in powder form and adding hydrogen peroxide in a stabilized aqueous solution at a concentration of 5 volumes of hydrogen peroxide, mixing the two to form a paste. The abrasive nature of the sodium bicarbonate particles in the paste, applied by brushing, mechanically breaks down the biofilm and removes the bacterial colonies. Hydrogen peroxide, which degrades in the presence of species Protonated or cationic chemicals, in the presence of water in the mouth to provide water and oxygen in gaseous form, eliminate Gram-negative and anaerobic bacteria located beneath the biofilm. However, this treatment has a major drawback. Preparing the paste correctly on a daily, or even several times a day, basis quickly becomes too difficult and burdensome for the patient. This significant problem is a real obstacle to treatment adherence and therefore to the successful management of this condition.

[0004] One aspect of the invention is therefore to offer a periodontal cosmetic composition that can be used directly, in the form of a mixture of dry powders, and which only requires the composition to be brought into contact with water or with an aqueous environment at the time of its use.

[0005] The periodontal cosmetic composition in the form of a mixture of dry powders as envisaged by the present invention therefore comprises a dry mixture: - sodium bicarbonate, in a content exceeding 97% by weight relative to the total weight of the composition; and - sodium percarbonate, in a content greater than 0% and less than or equal to 3% by weight relative to the total weight of the composition.

[0006] The applicant has indeed discovered, surprisingly, that the sodium percarbonate content expressed above would reduce, or even avoid, a hypersensitivity phenomenon on the part of the user that has been observed with similar compositions with a higher sodium percarbonate content.

[0007] The cosmetic composition according to the invention may also include other ingredients in dry form, such as manufacturing aids and / or flavoring agents, and / or aromas, etc., depending on the appearance, and / or color, etc., desired in the final commercial product. Naturally, the choice of such aids would be based on their lack of negative impact on the oxygen-releasing functionality of the percarbonate at the time of use of the composition.

[0008] According to another aspect, the periodontal cosmetic composition, as envisaged by the present invention, is preferably in the form of a fine white powder.

[0009] According to another aspect, sodium bicarbonate has a particle size distribution in which the percentage of particles larger than 45 microns is between 60% and 100%.

[0010] According to another aspect, sodium bicarbonate has a particle size distribution in which the percentage of particles larger than 75 microns is between 20% and 90%.

[0011] According to another aspect, sodium percarbonate has an average particle size of between 0.65 and 0.9 mm.

[0012] According to another aspect, sodium percarbonate has a particle size distribution in which 95% of the particles have a size greater than 0.15 mm and less than 1.6 mm.

[0013] An example of a composition according to the invention is given below, the contents being given by weight relative to the total weight of the composition: - sodium bicarbonate: 99.7% - sodium percarbonate: 0.3%.

[0014] According to another aspect, the composition according to the invention is advantageously packaged in the form of a stick, corresponding to a single-dose package in the form of a small sachet, and in particular sterile and / or waterproof. The packaging may also consist of several sticks, for example, 30, 40, 50 or 60 sticks presented in a carton so as to represent one or more months of cosmetic treatment.

Claims

Demands

1. Periodontal cosmetic composition in the form of a mixture of dry powders: - of sodium bicarbonate, in a content greater than 97% by weight relative to the total weight of the composition; and - of sodium percarbonate, in a content greater than 0% and less than or equal to 3% by weight relative to the total weight of the composition.

2. Periodontal cosmetic composition according to claim 1, wherein the composition is in the form of a fine white powder.

3. Periodontal cosmetic composition according to claim 1, wherein the sodium bicarbonate has a particle size distribution in which the percentage of particles larger than 45 microns is between 60% and 100%.

4. Periodontal cosmetic composition according to claim 1, wherein the sodium bicarbonate has a particle size distribution in which the percentage of particles larger than 75 microns is between 20% and 90%.

5. Periodontal cosmetic composition according to claim 1, wherein sodium percarbonate has an average particle size of between 0.65 and 0.9 mm.

6. Periodontal cosmetic composition according to claim 1, wherein the sodium percarbonate has a particle size distribution in which 95% of the particles have a size greater than 0.15 mm and less than 1.6 mm.

7. Periodontal cosmetic composition according to claim 1, wherein the contents of sodium bicarbonate and sodium percarbonate are as follows, given as percentages by weight relative to the total weight of the composition: - sodium bicarbonate: 99.7% - sodium percarbonate: 0.3%.

8. Periodontal cosmetic composition according to claim 1, wherein the composition is packaged in stick form.

9. Periodontal cosmetic composition according to claim 1, wherein the composition is packaged in the form of a carton containing multiple sticks, preferably 30, 40, 50, or 60 sticks.