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Tooth whitening product containing piezoelectric material

A technology of tooth whitening and piezoelectric material, which is used in cleaning teeth, dentistry, prosthetics, etc., can solve the problems of expensive tooth bleaching equipment, complicated procedures, damage to skin and mucous membranes, etc., and achieve long-term effective tooth whitening effect and operation. simple effect

Pending Publication Date: 2019-11-19
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, no matter what kind of whitening agent is used, such as 30% hydrogen peroxide, carbamide peroxide, sodium perborate, etc., or cold light source whitening, its main whitening ingredient is hydrogen peroxide, which can damage human skin at high concentrations and mucous membrane, and due to the different concentration of hydrogen peroxide, the whitening agent will corrode the enamel, dentin, and even damage the pulp in varying degrees, causing a certain degree of irreparable damage to the teeth
This method can bleach the tooth color and increase the luster of the tooth in the short term, but over time, due to the damage of the enamel layer on the tooth surface, the tooth will become more prone to discoloration, and even the tooth color will become gray (dead pulp tooth)
In addition, tooth bleaching equipment is expensive, and patients need to pay a higher fee for each tooth whitening; the operation process is complicated, requiring special working conditions and a relatively strict working environment

Method used

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  • Tooth whitening product containing piezoelectric material
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  • Tooth whitening product containing piezoelectric material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] In this embodiment, barium titanate is used as an example of a piezoelectric material to prove that the piezoelectric material has a catalytic effect in an ultrasonic environment.

[0030] The polarized barium titanate and unpolarized barium titanate were respectively placed in a 5 mg / L rhodamine B solution and ultrasonicated. Figure 4 (a) After adding polarized barium titanate, the absorption spectrum of rhodamine B changes with time. Figure 4 (b) is the change of the absorption spectrum of rhodamine B with time after adding unpolarized barium titanate, and it can be seen that the catalytic rate of polarized barium titanate is significantly improved. Figure 4 From the comparison between (c) and (d), it can be seen that the catalytic effect of poled barium titanate is obviously better than that of unpolarized barium titanate.

[0031] This example shows that, no matter whether it is polarized or not, barium titanate can degrade organic matter in an ultrasonic enviro...

Embodiment 2

[0033] In order to simulate the process of vibratory whitening, the teeth stained with vinegar were placed in a suspension of barium titanate piezoelectric powder with a concentration of 1 mg / ml, and ultrasonically vibrated at 40w and 1kHz for 3 hours, in which barium titanate powder was the pole The powder after melting has a particle size of about 130nm, and after 3 hours of ultrasonic vibration, the tooth color becomes whiter obviously.

[0034] like Figure 5 As shown, the upper row of teeth is the color change of ultrasound for 3 hours in clean water, and the lower row of teeth is the color change of teeth after adding barium titanate piezoelectric powder for 3 hours. It can be seen that the teeth with barium titanate are obviously whitened.

Embodiment 3

[0036] The teeth stained with a mixed solution of black tea, red wine, fruit drinks and blueberry juice were placed in a suspension of manganese-doped lead magnesium niobate titanate (Mn-PMN-PT) for ultrasonication. The concentration of the piezoelectric powder is 1mg / ml, the Mn-PMN-PT is in a polarized state, and the particle size of the powder is ~1μm. After ultrasonication at 40w, 1kHz for 3 hours, the tooth color is obviously white.

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Abstract

The invention discloses a tooth whitening product containing a piezoelectric material. The piezoelectric material having piezoelectric effect is used as a whitening component of the tooth whitening product; the tooth whitening product makes contact with teeth and applies pressure on the tooth surface, and the piezoelectric property of the piezoelectric material is activated, so a large number of active groups are generated, stains on the tooth surface are degraded, and the teeth are whitened. The tooth whitening product is safe and non-toxic, the tooth whitening method is simple to operate, cannot cause damage to oral soft tissues, cannot cause damage to an enamel layer on the tooth surface, does not damage the tooth structure, and can obtain the long-term and effective tooth whitening effect.

Description

technical field [0001] The invention relates to a tooth whitening product containing a piezoelectric material, belonging to the technical field of tooth whitening. Background technique [0002] There are two common existing tooth whitening methods. One is to use abrasives to treat discoloration and stains on the tooth surface. However, abrasives have limited effect in tooth whitening and will cause damage to the enamel layer on the tooth surface. This damage increases the chances of the tooth becoming discolored again. The other is to use chemical whitening active substances. The whitening agent is applied to the teeth for a period of time, and the active ingredients act on the teeth to finally achieve the purpose of whitening. The main component of common whitening agents is peroxide. When using high-concentration hydrogen peroxide, the observed whitening effect is stronger, that is, as the concentration of hydrogen peroxide increases, the degree of penetration into the te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/81A61K8/29A61K8/19A61Q11/00
CPCA61K8/8123A61K8/29A61K8/19A61Q11/00A46B15/0016A61C17/3481A61C19/066A46B2200/1066A61K8/27A61C2201/00A61C2204/00
Inventor 汪尧进汪洋杨娜娜陈轩文鑫荣王书豪吴瀚舟杨斌
Owner NANJING UNIV OF SCI & TECH
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