8 results about "Carbamide peroxide" patented technology

The present invention relates to compositions for administration to the oral cavity, suitable for prophylaxis or treatment of diseases of the teeth and / or gums and / or the oral cavity, which comprises chlorhexidine and one or more peroxides that are decomposed into active oxygen, preferably hydrogen peroxide and / or carbamide peroxide and / or calcium peroxide.

The present application provides a kind of urea peroxide tooth whitening gel and its preparation method, comprising: sodium fluoride solution is mixed with gum arabic solution uniformly, under the condition of stirring and heating, gelatin solution is added, and microsphere suspension is obtained;Pentanedial is added to the microsphere suspension and stirred, and intermediate microspheres are obtained;The intermediate microspheres are added to sodium alginate solution, the suspension is dropped into calcium chloride solution for gelation, and the composite microspheres are taken out and soaked in chitosan solution for oscillation, to obtain double-layer sustained-release microspheres;Carbomer is dispersed in deionized water, and after standing and swelling, a dispersion is obtained, glycerol, xylitol, double-layer sustained-release microspheres, urea peroxide and stabilizer are added to the dispersion, and after mixing uniformly, triethanolamine is added, to obtain urea peroxide tooth whitening gel.The gel product obtained by the present application has the advantages of efficient whitening, long-term anticaries, low irritation and high stability, etc., effectively solving the problems of easy decomposition and easy sensitivity of active ingredients in traditional products.

The utility model belongs to the technical field of dentistry, and particularly discloses a bracket-free bleaching retainer which comprises an upper jaw and an upper row of teeth, the upper row of teeth are arranged at the bottom of the upper jaw, an upper tooth socket is sleeved outside the upper row of teeth, a lower jaw is connected to the bottom of the upper jaw, and a lower row of teeth are arranged at the top of the lower jaw. A lower tooth socket is sleeved outside the lower row of teeth, and a window is arranged inside the upper tooth socket. According to the bracket-free bleaching retainer, the window is formed in the upper tooth socket, the groove body is formed in the lower tooth socket, and the shapes of the window and the groove body are respectively the same as those of the upper row of teeth and the lower row of teeth, so that the bracket-free bleaching retainer can be formed only by sleeving the upper tooth socket on the surface of the upper row of teeth and sleeving the lower tooth socket on the surface of the lower row of teeth; whitening gel in the window and the groove body is attached to the surfaces of teeth, then the surfaces of the teeth are continuously cleaned through hydrogen peroxide and urea peroxide, and the problem that the whitening process is not lasting is solved.

The invention discloses a stable slow-release urea peroxide tooth whitening agent composition and a preparation method thereof. The composition comprises whitening glue and a catalyst, the whitening glue is prepared from urea peroxide micro powder, a thickening agent, essence and propylene glycol; the catalyst comprises inorganic salt, a thickening agent, a basic catalyst, essence and water. According to the anhydrous whitening gel, propylene glycol is used as a matrix carrier, and a catalyst is aqueous gel; when in use, the two components are mixed according to a ratio of 4: 1, the mixed product is slowly dissolved by water in oral saliva, the active ingredient of urea peroxide is continuously released, and the whitening effect of the product is remarkably improved.

OCR09WP27 / 04 / 2569 The nanoemulgel product for teeth whitening in this invention contains solid dispersion. Solid dispersions of carbamide peroxide encapsulated in a nanoemulsion. 1-65% by weight and hydrogel 35-99% by weight, where nanoemulsion is present. It consists of a solid dispersion of carbamide peroxide, water, and a surfactant, which is processed... The preparation of nanoemulgel products for teeth whitening was done by passing the mixture through a high-speed grinding machine. High pressure is used to obtain small internal particles at the nanometer level. Once the nanoemulsion is obtained, it is dispersed in... The hydrogel will yield a nanoemulgel product for teeth whitening when its whitening efficacy is tested. The teeth were found to provide good whitening results.

The application discloses a stable slow-release urea peroxide tooth whitening agent composition and a preparation method thereof. The composition comprises a whitening glue and a catalyst. The whitening glue comprises urea peroxide micro powder, a thickening agent, essence and propylene glycol. The catalyst comprises an inorganic salt, a thickening agent, an alkaline catalyst, essence and water. In the application, the anhydrous whitening glue component takes propylene glycol as a matrix carrier, and the catalyst is an aqueous gel. When used, the two are mixed at a ratio of 4:1. The mixed product is slowly dissolved by saliva moisture, continuously releases urea peroxide active ingredients, and significantly improves the whitening effect of the product.

The present invention relates to compositions for administration to the oral cavity, suitable for prophylaxis or treatment of diseases of the teeth and / or gums and / or the oral cavity, which comprises chlorhexidine and one or more peroxides that are decomposed into active oxygen, preferably hydrogen peroxide and / or carbamide peroxide and / or calcium peroxide.

The invention provides a urea peroxide tooth whitening gel and a preparation method thereof, and the preparation method comprises the following steps: uniformly mixing a sodium fluoride solution with an Arabic gum solution, and adding a gelatin solution under stirring and heating conditions to obtain a microsphere suspension; adding glutaraldehyde into the microsphere suspension, mixing and stirring to obtain intermediate microspheres; adding the intermediate microspheres into a sodium alginate solution, dropwise adding the suspension into a calcium chloride solution for gelation, taking out the composite microspheres, soaking the composite microspheres into a chitosan solution, and oscillating to obtain double-layer sustained-release microspheres; carbomer is dispersed in deionized water, after standing and swelling, dispersion liquid is obtained, glycerin, xylitol, the double-layer sustained-release microspheres, urea peroxide and a stabilizer are added into the dispersion liquid, triethanolamine is added after uniform mixing, and the urea peroxide tooth whitening gel is obtained. The obtained gel product has the advantages of efficient whitening, long-term caries prevention, low irritation, high stability and the like, and the problems that active ingredients of a traditional product are easy to decompose, sensitivity is easy to cause and the like are effectively solved.