SK334692A3 - Dental bleaching gel - Google Patents

Abstract

dental gel It contains 40 until 60 % weight. oxide siliceous him with size particles 5 until 15 nm and 40 until 60 % weight. water solution of peroxide H with concentration 3 until 30 % weight. dental gel by invention is a possible to use than part dental graze with whitening effect. IN low concentrations is a maybe his application right on the tooth enamel.

Description

Technical field

The invention relates to a dental whitening gel of hydrogen for whitening the surface of tooth enamel.

based on peroxide

Prior art

The unnatural discoloration of the teeth has two direct teeth. on the other hand, organic impurities in the enamel itself or organic coatings on the surface of the enamel can be used to improve the appearance of the teeth, dental varnishes, surface-sorbed, can be removed either by mechanical abrasion or by oxidation of this layer. The most common method is to brush your teeth with a solution of hydrogen peroxide together with sodium bicarbonate. However, the use of the preparations e by oxidative effects e and, in most cases, falls in the treatment of periodontium. One of their causes is the activity of both anaerobic microbes in the oral and cavity. Cast iron is used as the oxidant for this purpose. The oxidizing agents themselves (KMnO4, KClO4) or release them upon reaction with water. In the latter case, the active battle is predominantly hydrogen peroxide. Health-friendly preparations releasing hydrogen peroxide as the reaction product of hydrolysis have several disadvantages. Some, due to their low solubility. in water, do not release sufficient amounts of NaOH (H 2 O 4), others are unstable and their use is tied to the mixing of the starting components just prior to use (1) of peroxide urea clathrates with NaCOUS patent 4,523,180). The use of alkali alkaline earth metal percarbonates is due to their strongly aqueous environment. associated with mucosal membranes, these disadvantages are partially eliminated by the powder formulation recommended for the treatment of periodontal diseases, containing a mixture of sodium carbonate (U.S. Pat. No. 4,812,308).

This is the creation of Kyin in the first diversion from the coating and can be used to induce the use of the L a

basic reaction in tissue damage

SUMMARY OF THE INVENTION

According to the invention, the principle of the dental bleaching goal based on hydrogen peroxide is that. % to about 60% by weight. silica having a particle size of 5 to 15 nm and 40 to 1.0 V by weight.

% aqueous hydrogen peroxide solution having a concentration of 3 to 30% by weight.

The advantage of the solution according to the invention is the fact. i.e., hydrogen peroxide is stabilized in a three-point oil gel. which is ηιοζικ- at normal temperatures (0 to 25 ° C) long-term storage while maintaining a high H content (). While at these temperatures, the decomposition of hydrogen peroxide is relatively slow. = ‘<Y * .wu« - oral cavity temperature, at the same time mix the gel at i - *. · _ · »Ι ζιΓ '.' ····. ·.

accelerates the diffusion of hydrogen peroxide into the. m. but -.z · r ······ - .. -u i-'s ·· catalytic decomposition. Products of both story ^- · acti * p »· i · .- 'or: · id a.' n -! io pros · i ·. · * 11 a.

´5ol can be used for dental whitening. -I. The maximum concentration of hydrogen peroxide should not exceed 30% by mass in the case of a fall. Because of possible damage to the mucous tissue, the gel should only be applied to enamel under medical supervision.

Further, the gel is applied as a toothpaste component by a bleaching action. The maximum concentration of hydrogen peroxide in this case shall not exceed 3% by mass. Since the high stability of the gel is based on the sorption of hydrogen peroxide to a substance which is inert to oxidation, it is not appropriate for the toothpaste to contain larger amounts of oxidizable organic ingredients, the eye being e.g. sweeteners or flavorings. Conversely, the paste may contain inorganic abrasives such as e.g. SiO _n with higher grain size, ground CaCO 2 and the like.

Examples of the invention

Example 1

K 40% by weight. You are about. with a particle size of 5 to ± 1 '. 60 µl of mass is added from the stirring. % aqueous hydrogen peroxide solution at a concentration of 3% by weight. A thixotropic uo 1 is obtained.

Example 2

K 45% by weight. SiO 2 with a particle size of 5 to 15 nm is: i

M stirring adds 55% by weight. 30% by weight aqueous hydrogen peroxide solution. A thixotropic gol is obtained.

'ΓΊ-j 1 ^e ZU i':

na zbrľ

Pr e emvse 1 na wuí ί t el n

Hydrogen peroxide-based tooth whitening gel can be used as a component of toothpastes: whitening at low concentrations is the direct application of enamel.

Claims (1)

PATENT CLAIMS A dental bleaching gel based on hydrogen peroxide, characterized in that it contains 40 to 60% by weight. of silica having a particle size of 15-15 nm and 40 to 60 wt.%. aqueous hydrogen peroxide solution with a concentration of 3 to 30% w / w