Tooth whitening product comprising piezoelectric material

Abstract

This invention discloses a teeth whitening product containing piezoelectric materials. The invention uses piezoelectric materials with a piezoelectric effect as the whitening ingredient in the teeth whitening product. By contacting the teeth with the whitening product and applying pressure to the tooth surface, the piezoelectric properties of the material are activated, generating a large number of active groups that degrade stains on the tooth surface, achieving teeth whitening. The teeth whitening product of this invention is safe and non-toxic, the teeth whitening method is simple to operate, it does not damage oral soft tissues, nor does it damage the enamel layer on the tooth surface, it does not harm the tooth structure, and it can achieve long-lasting and effective teeth whitening results.

Description

Technical Field

[0001] This invention relates to a teeth whitening product containing piezoelectric materials, belonging to the field of teeth whitening technology. Background Technology

[0002] There are two main types of teeth whitening methods. One uses abrasives to treat discoloration and stains on the tooth surface. However, abrasives have limited effectiveness in teeth whitening and can damage the enamel layer, increasing the likelihood of recurrence. The other method uses chemical whitening agents. These are applied to the teeth over a period of time, and the active ingredients work on the teeth to achieve whitening. Common whitening agents with hydrogen peroxide as their main component often exhibit stronger whitening effects. This is because as the concentration of hydrogen peroxide increases, the degree of penetration into the teeth due to the concentration difference increases, leading to a greater amount of hydrogen peroxide reacting and thus improving the separation of pigments, resulting in a more effective whitening effect.

[0003] However, regardless of the whitening agent used, such as 30% hydrogen peroxide, urea peroxide, sodium perborate, or cold light source whitening, the main whitening ingredient is still hydrogen peroxide. High concentrations of hydrogen peroxide can damage human skin and mucous membranes. Furthermore, depending on the concentration, the whitening agent can corrode tooth enamel and dentin to varying degrees, even damaging the dental pulp, causing some degree of irreparable damage to the teeth. These methods can bleach teeth and increase their shine in the short term, but over time, due to damage to the enamel layer, teeth become more prone to discoloration, and in some cases, they may even turn gray (indicating dead pulp). In addition, teeth whitening equipment is expensive, requiring patients to pay high fees for each whitening session; the procedure is complex and requires special working conditions and a relatively strict working environment. Summary of the Invention

[0004] This invention provides a high-efficiency, simple, economical, and non-destructive non-bleaching teeth whitening product containing piezoelectric materials, which utilizes the piezoelectric effect of the piezoelectric materials to degrade stains on the tooth surface.

[0005] The piezoelectric material described in this invention is a material with piezoelectric effect, selected from BaTiO3.

[0006] The piezoelectric material described in this invention is preferably a polarized piezoelectric material. Polarized piezoelectric materials provide a better teeth whitening effect compared to unpolarized piezoelectric materials.

[0007] The teeth whitening product containing piezoelectric material described in this invention can be a teeth whitening product conventionally used in the field, such as teeth whitening agents, teeth whitening devices, etc.

[0008] The teeth whitening agent of this invention is a piezoelectric material or a teeth whitening composition containing a piezoelectric material. The teeth whitening agent can be in various forms, including powder, liquid, gel, paste, etc.

[0009] The teeth whitening composition containing piezoelectric materials described in this invention can be toothpaste, tooth powder, gel, or teeth cleaning solution containing piezoelectric materials.

[0010] The teeth whitening device described in this invention is a teeth whitening device made by adding piezoelectric materials. The teeth whitening device can take various forms, such as a toothbrush with bristles made of piezoelectric materials, or a dental tray or brace made of piezoelectric materials.

[0011] The present invention also provides a non-therapeutic teeth whitening method, which achieves teeth whitening by contacting a teeth whitening product containing piezoelectric material with the tooth surface and applying pressure to the tooth surface.

[0012] Specifically, the non-therapeutic teeth whitening method of the present invention whitens teeth by coating or spraying a teeth whitening agent onto the tooth surface and applying pressure to the tooth surface. The pressure applied to the tooth surface can be through vibration or friction, for example, by the teeth biting together or by using dental care products such as a toothbrush. For instance, repeated brushing provides continuous pressure changes to the piezoelectric material, activating its piezoelectric properties and generating a large number of active groups, which degrade stains on the tooth surface, thus achieving teeth whitening.

[0013] Specifically, the non-therapeutic teeth whitening method of this invention achieves teeth whitening by contacting a teeth whitening device with the teeth and applying pressure to the tooth surface. The pressure applied to the tooth surface can be through vibration or friction, for example, by the teeth biting together, by repeated brushing with a toothbrush, or by using an external pressure device to provide continuous pressure changes to the piezoelectric material, activating its piezoelectric properties and generating a large number of active groups, thereby degrading stains on the tooth surface and achieving teeth whitening.

[0014] The non-therapeutic teeth whitening method described in this invention relies primarily on the intensity of the excitation signal received by the piezoelectric material for its whitening efficiency. Therefore, using a high-frequency electric toothbrush or other instrument will result in a significantly better whitening effect than using a regular toothbrush.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This invention uses piezoelectric materials with a piezoelectric effect as the whitening ingredient in teeth whitening products. By applying pressure to the teeth through contact with the whitening product, the piezoelectric properties of the material are activated, generating numerous active groups that degrade stains on the tooth surface, thus achieving teeth whitening. The teeth whitening method of this invention is simple to operate, requires no additional equipment or professional operators, does not damage the tooth structure, and provides long-lasting and effective teeth whitening results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the catalytic effect of piezoelectric materials.

[0018] Figure 2 A schematic diagram illustrating the mechanism of piezoelectric catalytic decomposition of stains on the tooth surface.

[0019] Figure 3 A schematic diagram illustrating the mechanism by which a tooth coating containing piezoelectric materials catalytically degrades stains on the tooth surface.

[0020] Figure 4 The figure shows the experimental results of ultrasonic degradation of Rhodamine B by barium titanate in polarized and unpolarized states in Example 1.

[0021] Figure 5 The images show the changes in teeth stained with vinegar before and after ultrasonic treatment, with and without barium titanate in Example 2, and with and without barium titanate.

[0022] Figure 6 The graph shows the results of the biotoxicity test of barium titanate powder and 15% hydrogen peroxide.

[0023] Figure 7 Scanning electron microscope images of teeth after being whitened with barium titanate and 30% hydrogen peroxide for the same amount of time. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0025] Figure 1 This is a schematic diagram illustrating the catalytic effect of piezoelectric materials. (For example...) Figure 1As shown, the surface of a piezoelectric material possesses opposite charges due to its inherent polarity. When the external force applied to the piezoelectric material changes, these opposite charges are released. In an aqueous solution, these released opposite charges combine with water molecules to form active groups, which can degrade stains on the tooth surface. When the external force stops changing, a new electrostatic equilibrium is formed on the surface of the piezoelectric material. When the external force changes again, the piezoelectric material absorbs opposite charges from the aqueous solution, and the charges remaining in the water continue to react with water molecules to form active groups. Therefore, as long as a continuous pressure change can be applied to the piezoelectric material, it can be used for catalytic degradation.

[0026] Figure 2 This diagram illustrates the mechanism by which piezoelectric materials catalytically degrade stains on the tooth surface through the piezoelectric effect. By bringing the piezoelectric material into contact with the tooth surface and using stimuli such as vibration and friction to activate the piezoelectric effect, a catalytic whitening effect is achieved.

[0027] Figure 3 A schematic diagram illustrating the mechanism by which a tooth coating containing piezoelectric materials catalytically degrades stains on the tooth surface. Figure 3 As shown, piezoelectric powder or a teeth whitening composition containing piezoelectric powder is coated on the tooth surface; repeated brushing with a toothbrush provides continuous pressure changes to the piezoelectric material, activating the piezoelectric properties of the piezoelectric powder, thereby generating a large number of active groups, degrading stains on the tooth surface, and achieving teeth whitening.

[0028] Example 1

[0029] This embodiment uses barium titanate as an example of a piezoelectric material to demonstrate that piezoelectric materials have a catalytic effect in an ultrasonic environment.

[0030] Polarized barium titanate and unpolarized barium titanate were placed in 5 mg / L Rhodamine B solution and subjected to sonication. Figure 4 (a) The absorption spectrum of Rhodamine B changes over time after the addition of polarized barium titanate. Figure 4 (b) The absorption spectrum of Rhodamine B changes over time after the addition of unpolarized barium titanate, showing that the catalytic rate of polarized barium titanate is significantly improved. Figure 4 The comparison between (c) and (d) shows that the polarized barium titanate has a significantly better catalytic effect than the unpolarized barium titanate.

[0031] This embodiment demonstrates that barium titanate can degrade organic matter under ultrasonic conditions regardless of polarization; however, polarized barium titanate exhibits a more pronounced piezoelectric response, resulting in a faster catalytic rate. This embodiment confirms the feasibility of using piezoelectric materials for teeth whitening.

[0032] Example 2

[0033] To simulate the vibration whitening process, 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 40 W and 1 kHz for 3 hours. The barium titanate powder was polarized and had a particle size of approximately 130 nm. After 3 hours of ultrasonic vibration, the teeth became noticeably whiter.

[0034] like Figure 5 As shown, the color change of the upper teeth is determined by ultrasonic treatment in water for 3 hours, while the color change of the lower teeth is determined by ultrasonic treatment after adding barium titanate piezoelectric powder for 3 hours. It can be seen that the teeth with added barium titanate are significantly whitened.

[0035] Example 4

[0036] The biotoxicity of barium titanate powder was tested using rat thoracic artery smooth muscle cells. Different additives were added to the cell culture medium, and after a period of culture, biological statistics were performed. The results are as follows: Figure 6 As shown. Figure 6 (a) shows the change in cell number in the standard culture medium over the number of days of culture. Figure 6 (b) and (c) show the results after adding barium titanate powder (final concentration 1 mg / mL) and 30% hydrogen peroxide (final concentration 15%) to the culture medium, respectively. Figure 6 (d) The results for each day were statistically analyzed. As can be seen from the figure, the addition of barium titanate to the standard culture medium did not affect the growth and reproduction of cells. On the contrary, after the addition of hydrogen peroxide, almost all the cells in the culture medium died, indicating that barium titanate has good biocompatibility.

[0037] The teeth whitening method of the present invention uses piezoelectric materials as its main active ingredient, and does not involve the risk of damage to teeth, skin, nerves, mucous membranes, etc. that may occur during the peroxide whitening process. Figure 6 The graph shows the results of a biotoxicity test on barium titanate powder and 30% hydrogen peroxide. Figure 6 As shown, barium titanate piezoelectric powder has significantly lower biotoxicity than 30% hydrogen peroxide. Furthermore, barium titanate powder does not damage the tooth surface, while 30% hydrogen peroxide causes significant damage to the enamel on the tooth surface. Figure 7 The images show scanning electron microscope (SEM) images of teeth after being whitened with barium titanate and 30% hydrogen peroxide for the same amount of time. The images show that hydrogen peroxide causes severe damage to the tooth surface, while the teeth treated with barium titanate show no damage and their morphology is almost identical to the original teeth.

[0038] In summary, utilizing the piezoelectric response of piezoelectric materials, teeth whitening products containing piezoelectric materials can achieve teeth whitening without damaging or causing irreparable tooth damage. By bringing the piezoelectric material into contact with the tooth surface and using stimuli such as vibration and friction to activate the piezoelectric effect, a catalytic whitening effect is achieved. Figure 2 As shown, piezoelectric powder or a teeth whitening composition containing piezoelectric powder is coated on the tooth surface; repeated brushing with a toothbrush provides continuous pressure changes to the piezoelectric material, activating the piezoelectric properties of the piezoelectric powder, thereby generating a large number of active groups, degrading stains on the tooth surface, and achieving teeth whitening.

[0039] The non-therapeutic teeth whitening method of the present invention can have multiple implementation schemes, such as: (1) combining piezoelectric materials with commercial toothpaste, using the vibration generated during brushing to achieve piezoelectric catalytic teeth whitening, and the whitening effect is better if an electric toothbrush with higher excitation intensity is used; (2) making piezoelectric materials into fibrous form and adding them to the bristles of a toothbrush, so that when the bristles are bent during toothbrush use, the piezoelectric effect can be excited to achieve piezoelectric catalytic teeth whitening; (3) adding piezoelectric materials to oral care or orthodontic appliances, such as braces or dental trays, so that during orthodontic treatment, the friction between braces or dental trays during tooth occlusion can achieve piezoelectric catalytic teeth whitening; (5) directly adding piezoelectric materials to teeth whitening instruments and equipment, using external stimulation to achieve piezoelectric catalytic teeth whitening. In the above implementation schemes, brushing teeth and orthodontic appliances are long-term daily activities, combining teeth whitening with daily activities, so that teeth whitening can be achieved during daily activities.

Claims

1. A teeth whitening product containing piezoelectric materials, characterized in that, The piezoelectric material is a material with piezoelectric effect, selected from BaTiO3; The piezoelectric material is a whitening ingredient in teeth whitening products; The teeth whitening product mentioned is a teeth whitening agent or a teeth whitening device.

2. The teeth whitening product according to claim 1, characterized in that, The piezoelectric material is a polarized piezoelectric material.

3. The teeth whitening product according to claim 1, characterized in that, The teeth whitening agent is in the form of powder, liquid, or gel.

4. The teeth whitening product according to claim 1, characterized in that, The teeth whitening agent is in the form of a paste.

5. The teeth whitening product according to claim 1, characterized in that, The teeth whitening products containing piezoelectric materials are toothpaste, tooth powder, gel, or teeth cleaning solutions containing piezoelectric materials.

6. The teeth whitening product according to claim 1, characterized in that, The teeth whitening device mentioned is a toothbrush with bristles made of piezoelectric material, or a dental tray or brace made of piezoelectric material.

7. A non-therapeutic teeth whitening method, characterized in that, The teeth whitening product containing piezoelectric material as described in any one of claims 1 to 6 is brought into contact with the tooth surface and pressure is applied to the tooth surface.

8. The non-therapeutic teeth whitening method according to claim 7, characterized in that, Teeth whitening agents are applied or sprayed onto the tooth surface and pressure is applied to the tooth surface; or a teeth whitening device is brought into contact with the teeth and pressure is applied to the tooth surface; the pressure on the tooth surface is applied by vibration or friction.

9. The non-therapeutic teeth whitening method according to claim 8, characterized in that, The teeth whitening device described is a high-frequency electric toothbrush.

10. The non-therapeutic teeth whitening method according to claim 8, characterized in that, The teeth whitening device described is a high-frequency vibration teeth whitening device.

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