JP2000119148A - Toothpaste composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composition including a polishing agent having the action of the removal of both dental plaque and precipitation on the surface of a tooth, sparingly abrading the surface of a tooth and excellent in polishing effect. SOLUTION: This dentifrice composition includes silicone resin powder having 0.1-100 μm average particle diameter and comprising a structural unit of the formula RSiO3/2 (wherein, R is a 1-20C monovalent organic group).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dentifrice composition, and more particularly, to a dentifrice composition which does not cause abrasion of the tooth surface and has an excellent tooth whitening effect.

[0002]

2. Description of the Related Art Conventionally, dentifrice compositions have been used for the purpose of preventing caries, preventing alveolar pyorrhea, and whitening. Except for water dentifrice, the dentifrice composition contains an abrasive, which is effective in removing plaque and deposits on the tooth surface. As an abrasive used in this dentifrice composition, inorganic compound powders such as calcium hydrogen phosphate, silicic anhydride, and calcium carbonate have been conventionally used.

[0003]

Although these conventional abrasives are excellent in polishing effect on the tooth surface, they are effective for removing plaque and deposits on the tooth surface.
When a toothbrush is used in the lateral direction during toothbrushing, the root of the tooth is gradually worn away, which may cause alveolar pyorrhea. Therefore, there has been a long-awaited demand for a composition containing an abrasive having an excellent polishing effect, which has an action of removing plaque and removing deposits on the surface of the teeth and which does not cause abrasion of the tooth surface.

[0004]

Means for Solving the Problems The present inventor has conducted intensive studies to solve the above-mentioned problems, and as a result, has found that some or all of the abrasives conventionally used in dentifrice compositions have an average particle diameter of 0.1. The present inventors have found that a toothpaste composition having an excellent whitening effect can be obtained without excessively abrading the tooth surface by replacing the silicone resin powder having a structure unit of substantially [RSiO _3/2 ] with a size of from 100 μm to 100 μm. Completed the invention.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The silicone resin powder used in the present invention is substantially composed of a structural unit represented by [RSiO _3/2 ]. Here, R is one or more monovalent organic groups having 1 to 20 carbon atoms, such as methyl, ethyl, propyl, butyl, pentyl, hexyl, octyl, decyl, tetradecyl, hexadecyl, octadecyl, eicosyl and the like. A cycloalkyl group such as cyclopentyl and cyclohexyl; an alkenyl group such as vinyl and allyl; an aryl group such as phenyl and tolyl, or a part or all of the hydrogen atoms in these organic groups are halogen atoms, amino, acryloxy, Examples thereof include those substituted with an organic group having a polar group such as methacryloxy, epoxy, mercapto, and carboxyl groups. Among these, a methyl group is particularly preferred.

The structural unit of the silicone resin powder is substantially represented by [RSiO _3/2 ], and other structural units are [R ₃ SiO _1/2 ] and [R ₂ SiO _2/2 ]. ], [SiO _4/2 ] may be contained in an amount of less than 10 mol% in total. Even if the average particle size of the silicone resin powder is less than 0.1 μm or more than 100 μm, the polishing effect is poor. Therefore, 0.1 to 100 μm is necessary, but 1 to 10 μm is particularly preferable. The shape of the silicone resin powder may be irregular or spherical. Further, the dentifrice composition of the present invention may be in any form of toothpaste, semi-paste toothpaste or powdered toothpaste.

Components other than the silicone resin powder of these dentifrice compositions include abrasives, foaming agents, thickeners, wetting agents, and sweeteners. Examples of the abrasive include calcium hydrogen phosphate, calcium carbonate, silicic anhydride, and aluminum hydroxide. Examples of the foaming agent include sodium lauryl sulfate and sucrose fatty acid ester. As the thickener, carboxymethyl cellulose is used. Sodium, carrageenan, sodium alginate and the like are used, as humectants glycerin, sorbit, ethylene glycol, propylene glycol and the like are used, and as sweeteners saccharin sodium and xylitol are used. Further, in addition to the above, a fragrance, a preservative, a pigment and the like may be appropriately added and blended.

If the amount of the silicone resin powder in the dentifrice composition is less than 1% by weight, the various effects of polishing become insufficient, and if it exceeds 99% by weight, the uniformity of the composition is reduced. The content is preferably 1 to 99% by weight, more preferably 10 to 99% by weight.
It is 90% by weight, more preferably 30-70% by weight.

[0009]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention.

(Examples 1 and 2, Comparative Example 1) [CH ₃ SiO _3/2 ]
Using the spherical “silicone resin powder-1” having a structural unit represented by the following formula and having an average particle size of 2.0 μm, the components shown in Table 1 were mixed in the composition shown in (Table 1). The mixture was added slowly and mixed uniformly. Then further
The ingredients were mixed to prepare a toothpaste. Using the obtained toothpaste with a nylon toothbrush three times a day in the morning and afternoon and three minutes after each meal for 3 minutes each with a horizontal brushing method, after one month, the abrasion state of the tooth root and whitening of teeth The degree of sex was visually observed. The results are shown in (Table 1).

[0011]

[Table 1]

[0012]

The dentifrice composition of the present invention does not excessively abrade teeth and provides an excellent whitening effect to the tooth surface.

Claims (1)

[Claims] [Claim 1] A substantially [RS] having an average particle size of 0.1 to 100 µm
A dentifrice composition containing a silicone resin powder having a structural unit of [io3 _{/ 2} ] (where R is a monovalent organic group having 1 to 20 carbon atoms).