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Whitening toothpaste subjected to visible-light-stimulated oxidation reduction reaction and preparation method of whitening toothpaste

A visible light and reaction technology, which is applied in toothpaste preparation and teeth whitening, can solve the problems of poor whitening effect of reactant design, and achieve the effect of safe use, simple operation method and low equipment requirements

Active Publication Date: 2018-01-16
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the technical defects of the prior art, and provides a whitening toothpaste that stimulates redox reaction by visible light and its preparation method, so as to solve the problem of teeth bleaching by photocatalytic oxidation reaction in the prior art. Reasonable technical issues resulting in poor whitening effect

Method used

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  • Whitening toothpaste subjected to visible-light-stimulated oxidation reduction reaction and preparation method of whitening toothpaste
  • Whitening toothpaste subjected to visible-light-stimulated oxidation reduction reaction and preparation method of whitening toothpaste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. The precursor solution is composed of 50mM zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), 80mM ammonia water (NH 3 ·H 2 O) and 25mM hexamethylenetetramine (HMT) in 100ml of deionized water, cover the container with a lid and stir for 10 minutes until the solute is completely dissolved until it is clear and ready for use. In order to avoid the early precipitation of the precursor solution, the order of delivery is NH 3 ·H 2 O, Zn(NO 3 ) 2 ·6H2 O, HMT and containers are always sealed with lids.

[0035] 2. When the temperature of the water bath reaches 65°C, put the precursor solution container with the lid into the water bath and ensure that it is fully submerged, and react for 15 minutes.

[0036] 3. Add 0.14g of sodium citrate and 0.1g of hydroxypropyl methylcellulose to the solution, and put them in a water bath at 85°C for 12 hours.

[0037] 4. Put the obtained product into a vacuum freeze dryer, and after drying, put it into a household microwave oven fo...

Embodiment 2

[0039] 1. Put 0.08g of nano titanium dioxide and 0.01g of dopamine hydrochloride into a 100ml Erlenmeyer flask, add 50ml of pure water, shake and mix;

[0040] 2. Add 0.1g of hexamethylenetetramine, oscillate ultrasonically for 5 minutes, seal the container and put it in a water bath at 90°C for 3 hours;

[0041] 3. The obtained product is washed twice with pure water, then washed twice with absolute ethanol, and finally washed twice with pure water, and the product is put into a vacuum freeze dryer, and the finished product can be obtained after freeze drying.

Embodiment 3

[0043] Dissolve the finished product in Example 1 in water, dip a toothbrush into the solution, turn on the LED yellow light, and brush your teeth for three minutes to see the whitening effect.

[0044] At the same time, the toothpaste prepared in Example 1 was used to treat the experimental teeth for different periods of time. The treatment method was to soak the experimental teeth in the aqueous solution of the toothpaste prepared in Example 1 and continue to irradiate them with yellow LED light. The experimental results are as follows: figure 1 shown.

[0045] like figure 1 As shown in parts b~d in the middle, after half an hour of treatment, there is an obvious effect, and the tooth stains in the alveolar are also well cleaned. Visible by the insets in the upper right corners of b-d respectively. The teeth treated with the toothpaste of Example 1 have almost no bacterial growth on the surface, which can effectively inhibit the growth of oral bacteria. Depend on figure ...

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Abstract

The invention provides whitening toothpaste subjected to a visible-light-stimulated oxidation reduction reaction and a preparation method of the whitening toothpaste. According to the technical scheme, zinc nitrate hexahydrate, ammonia water, and hexamethylene tetramine are taken as main raw materials and are subjected to a one-step reaction, the obtained product is reacted with sodium citrate andhydroxypropyl methyl cellulose, and the obtained product undergoes freeze drying and microwave processing to obtain the whitening toothpaste. The toothpaste contains porous zinc oxide, and can be fast subjected to an oxidation reduction reaction with color-changed teeth under yellow light stimulation. The whitening toothpaste has the following technical advantages: 1, the whitening toothpaste hasporosity and a good absorption effect; 2, the whitening toothpaste can respond to yellow light, is subjected to an oxidation reduction reaction without ultraviolet stimulation, and is safe during usefor the yellow light is mild and is less irritant to eyes; and 3, the process is simple and safe, no organic solvent is needed, the operation method is simple, and the equipment requirement is low, so that the preparation method is suitable for massive production and industrialization.

Description

technical field [0001] The invention relates to the technical field of toothpaste preparation, and at the same time relates to the technical field of tooth whitening, in particular to a whitening toothpaste whose oxidation-reduction reaction is excited by visible light and a preparation method thereof. Background technique [0002] The color of the teeth directly affects the image of the face, so tooth whitening has become a common cosmetic demand. With the development of medical technology, a variety of restoration methods for discolored teeth have been formed in recent years. Among them, the application of covering whitening and chemical bleaching is the most popular. universal. The main methods of covering and whitening include veneer and full crown restoration. Both of these methods require extensive grinding of teeth, so there is irreversible damage to the structure of the tooth itself. Chemical bleaching is relatively safe, but because it relies on chemical reactions,...

Claims

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Application Information

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IPC IPC(8): A61K8/27A61K8/02A61K8/19A61K8/49A61K8/365A61K8/73A61K8/29A61K8/41A61Q11/00
CPCA61K8/84A61K8/29A61K8/41A61Q11/00A61K2800/82A61K2800/84A61K2800/81
Inventor 王小磊辛洪波余芬廖岚张凤
Owner NANCHANG UNIV
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