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Tooth whitening gel

A technology for teeth whitening and whitening gel, which is used in dentistry, medical science, oral care and other directions to achieve the effects of optimal stability and safety, high biocompatibility and biodegradability

Inactive Publication Date: 2013-09-18
FAR EASTERN NEW CENTURY COPRRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technology of the present invention is mainly to provide a solution to the above problems, which can effectively improve the safety and convenience of its operation, and this material has never appeared in the related technical field in the past

Method used

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Examples

Experimental program
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preparation example Construction

[0037] Preparation method of tooth whitening gel and halogenated polypeptide

[0038]The teeth whitening gel provided by the embodiments of the present invention is prepared by diluting or dispersing the halogenated polypeptide indicated in the present invention with water to prepare tooth whitening gels with different concentrations.

[0039] To prepare the halogenated polypeptide required by the embodiments of the present invention, polyglutamic acid and sodium hypochlorite can be used for chlorination reaction at room temperature, and an aqueous solution containing phosphoric acid is used as a buffer solution to adjust its pH to 6-8. After the preset reaction time is completed, an appropriate amount of isopropanol is added to precipitate the product. Then filter and vacuum dry to obtain chlorinated polyglutamic acid (that is, a kind of halogenated polypeptide pointed out in the present invention), which is white to light yellow in powder form.

[0040] The polyglutamic aci...

Embodiment 1

[0058] Take 10.0 g of polyglutamic acid (polyglutamic acid sodium salt, molecular weight about 2,000,000 Daltons, Vedan, Taiwan) into a 250 ml single-necked bottle, add 90 ml of pure water, and stir until completely dissolved. Then add 4 grams of 12.65 wt% sodium hypochlorite aqueous solution, and then adjust the pH value of the reaction solution to 6-8 with 0.5N phosphoric acid aqueous solution. Stirring of the reaction was continued at room temperature for 30 minutes. The reaction solution was placed in a separatory funnel, chlorinated polyglutamic acid 1 was precipitated with 400 ml of isopropanol, and separated from the separatory funnel. Next, the chlorinated polyglutamic acid 1 was dried under vacuum. Chlorinated polyglutamic acid 1 after drying is white to pale yellow in powder form and can be completely dissolved in aqueous solution.

[0059] Titrate the dried chlorinated polyglutamic acid 1 with sodium thiosulfate aqueous solution, and finally obtain the concentrati...

Embodiment 2～7

[0061] Embodiment The reaction conditions are as described in Example 1, but the weight of the above-mentioned 12.65wt% sodium hypochlorite aqueous solution is increased to 7.5, 12, 20, 28, 36 and 40 grams respectively, and added to the reaction solution. Stirring of the reaction was continued at room temperature for 30 minutes. The reaction solutions of each group were respectively placed in a separatory funnel, chlorinated polyglutamic acid 2-7 was precipitated with 400 ml of isopropanol, and separated from the separatory funnel. Next, dry the chlorinated polyglutamic acid 2-7 under vacuum. The dried chlorinated polyglutamic acid 2-7 is white to pale yellow in powder form and can be completely dissolved in aqueous solution.

[0062] Titrate the dried chlorinated polyglutamic acid 2-7 with sodium thiosulfate aqueous solution respectively, and finally obtain the segment A with N-Cl functional group in chlorinated polyglutamic acid 2-7. concentration in amino acid (see Table ...

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Abstract

The invention relates to a tooth whitening gel with main components comprising a polypeptide with high molecular weight and comprising halamine (N-X, X=Cl, Br or I) functional group. With an oxidation-reduction characteristic of halamine, colored substances on the surface of teeth are bleached and discolored, such that the tooth whitening function is provided.

Description

technical field [0001] The invention relates to a tooth whitening gel, in particular to a high molecular tooth whitening gel which does not need additional thickening agent. Background technique [0002] Teeth whitening is one of the most popular cosmetic procedures nowadays. Teeth whitening methods can be roughly divided into ceramic veneers, all-ceramic crowns and tooth bleaching. Among them, although ceramic veneers and all-ceramic crowns have good teeth whitening effects, they are easy to cause tooth sensitivity, and some healthy teeth need to be removed. The expensive cost is not affordable by ordinary people, so the users are not common. Teeth bleaching does less harm to the essence of teeth, and the cost is lower. In addition, due to the advancement of technology and materials, the number of teeth bleaching users is increasing year by year. [0003] As early as the 19th century, scientists have begun to study the method of tooth bleaching. At first, the bleaching a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/64A61Q11/00
Inventor 李致达李俊谊游林谦吴勇毅
Owner FAR EASTERN NEW CENTURY COPRRATION
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