U-shaped teeth whitening tray with embedded skeleton

Abstract

The present invention relates to a U-shaped teeth whitening tray with an embedded skeleton, which has a U-shaped tray-like structure formed by an outer wall, a bottom wall, and an inner wall. The teeth tray sequentially comprises, from inside to outside, a whitening gel layer, a flexible skeleton structure, an adhesive gel layer, and a barrier film layer, wherein the whitening gel layer comprises a tooth bleaching agent, and the flexible skeleton structure is formed by embedding nonwoven fabrics in upper and lower wax base layers or silica gel layers prefabricated into specific traits. During the preparation of the teeth tray, the flexible skeleton structure is used as the core, and a whitening gel composition and an adhesive gel composition are applied on the top and bottom, respectively; after drying, a lamellar structure integrally formed by the whitening gel layer, the flexible skeleton structure, and the adhesive gel layer is formed; and then the barrier film layer is attached to an outer side of the gel adhesive layer.

Description

A U-shaped teeth whitening tray with an embedded skeleton Technical Field

[0001] This invention relates to the field of teeth whitening products, and more specifically, to a U-shaped teeth whitening tray with an embedded skeleton. Background Technology

[0002] Currently, the four most effective teeth whitening methods recognized by dentists are: cold light whitening, whitening trays, whitening strips, and whitening toothpaste. Cold light whitening uses a high concentration of bleaching agent (for example, hydrogen peroxide, approximately 15%-38%) and generally requires a dentist's guidance in a dental clinic. Whitening toothpaste is widely available, but for safety reasons, the bleaching agent content is low (generally no more than 3%), and long-term use is required to achieve whitening effects. Whitening strips are convenient and easily whiten teeth, making them a popular and widely used product. Users can easily attach them to their teeth, but their drawbacks include insufficient coverage, easy shifting after application, a still relatively low bleaching agent content (therefore requiring prolonged wear to achieve whitening effects), and incomplete coverage of the teeth, making it difficult to cover all teeth requiring whitening. Whitening trays... For better tooth coverage and fit, higher concentrations of teeth whitening agents can be used. Traditional teeth whitening trays are generally made of rigid, transparent plastic, custom-made to fit the curvature of the dental arch. The teeth whitening agent is applied to the tray, and it's worn for a certain period (approximately 2-4 hours) to complete the whitening process. However, these custom-made trays are expensive and often require dentist guidance, lacking convenience. Currently, non-custom, universal teeth whitening trays on the market are made by adhering a treatment gel to a plastic film as a barrier and matrix. Due to the lack of core support, the fit is poor, leading to displacement and potential leakage of the whitening agent. Excessive whitening agent (e.g., hydrogen peroxide content exceeding 10%) can damage gum tissue, severely limiting the use of non-custom tray products. Therefore, there is a demand for a portable, non-custom teeth whitening product that ensures safety while providing fast and effective whitening results, addressing the problems of current products. Summary of the Invention

[0003] This invention aims to provide a U-shaped teeth whitening tray with an embedded skeleton, addressing the common problems of traditional silicone or hard plastic trays, such as their rigidity, inability to fit properly, and the tendency for adhesive to overflow during use. The invention improves the product structure by changing the existing technology that uses a plastic film as a base and applies whitening gel on top. Instead, a flexible skeleton structure is embedded within the tray. Using this flexible skeleton structure as the core, whitening gel and adhesive gel compositions are applied to its upper and lower surfaces respectively. After drying, a multi-layered structure is formed, consisting of a whitening gel layer, a flexible skeleton structure, and an adhesive gel layer. A barrier film layer is then attached to the outside of the adhesive gel layer, thus creating a teeth whitening product that combines the advantages of both whitening strips and trays.

[0004] The technical solution adopted by this invention is as follows: A U-shaped whitening dental tray with an embedded skeleton is provided, which is a U-shaped tray-like structure formed by an outer wall, a bottom wall, and an inner wall. The tray, from the inside out, comprises a whitening gel layer, a flexible skeleton structure, an adhesive gel layer, and a barrier film layer. The whitening gel layer includes a teeth whitening agent. The flexible skeleton structure is formed by embedding non-woven fabric in two pre-formed upper and lower wax or silicone layers. During the preparation of the tray, the flexible skeleton structure is used as the core, and a whitening gel composition and an adhesive gel composition are applied to the upper and lower surfaces respectively. After drying, a layered structure is formed by integrally molding the whitening gel layer, the flexible skeleton structure, and the adhesive gel layer. Then, a barrier film layer is attached to the outside of the adhesive gel layer.

[0005] Preferably, the barrier membrane is a PO membrane.

[0006] Preferably, the nonwoven fabric has two upper and lower arc-shaped guide lines, which make the flexible skeleton structure easy to fold along the guide lines to form a U-shaped tray structure.

[0007] Optionally, the whitening gel composition includes alcohol and glycerin as solvents, one or more of peroxide, PAP, and sodium hypochlorite as teeth whitening agents, one or more of sodium polyacrylate, acrylate copolymer, PVP, and ethyl cellulose as thickening binders, and also includes sweeteners, flavorings, and pH adjusters.

[0008] Furthermore, the content of the tooth whitening agent is greater than 8%.

[0009] Optionally, the adhesive gel composition includes alcohol and glycerin as solvents, and one or more of sodium polyacrylate, acrylate copolymer, PVP, and ethyl cellulose as thickening binders.

[0010] Optionally, the adhesive gel composition further includes a gingival protectant.

[0011] Preferably, the inner wall of the U-shaped teeth whitening tray has two notches.

[0012] Preferably, its thickness is less than 1 mm.

[0013] The present invention adopts the above technical solution and fully considers solving the following problems:

[0014] 1. In terms of structure, this invention embeds a flexible skeleton structure into the dental tray. With the flexible skeleton layer as the core, a whitening gel composition and an adhesive gel composition are coated on the upper and lower surfaces respectively. After drying, a multi-layer structure is formed by integrally molding the whitening gel layer, the flexible skeleton structure, and the adhesive gel layer. Then, a barrier film layer is attached to the outside of the gel adhesive layer. The flexible skeleton layer serves as the core support, so that the whitening gel layer and the adhesive gel layer with isolation and adhesion functions are firmly attached to the upper and lower surfaces respectively. The overall structure of the product is very stable, and the effective ingredients are not prone to displacement or leakage during use, resulting in higher safety performance. Therefore, the content of teeth whitening agent in the product can also be increased, improving the efficiency of use.

[0015] 2. The flexible skeleton structure is formed by embedding non-woven fabric in two pre-formed wax base layers or silicone layers with specific shapes. The non-woven fabric is soft, lightweight and has good adhesion, making it suitable as a flexible skeleton matrix. The wax base layer is pre-formed with specific shapes corresponding to the curvature of the human dental arch. It not only serves as a shaping support for the flexible skeleton, but also has the functions of thickening, moisturizing and adhesion. The above flexible skeleton structure can fit well with the human oral cavity and wrap around it in all directions. It is not only an effective support for the product itself, but also overcomes the cumbersome and uncomfortable feeling of traditional gel + plastic tray.

[0016] 3. As mentioned above, inappropriate use of teeth whitening products (such as hydrogen peroxide) or improper application time may damage the oral cavity and gums. The dental tray structure of this invention provides dual protection with an adhesive gel layer and a barrier membrane layer, preventing damage to tooth enamel and avoiding irritation and harm to the gums and oral mucosa. Its use will not cause discomfort to the gums or oral cavity. The adhesive gel layer can also be further supplemented with a gum protectant as needed.

[0017] 4. The layered structure has uniform distribution of each layer, stable structure and efficacy, and integrates whitening gel with the dental tray structure into one, resulting in a more stable product structure that is suitable for preservation and wide application. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall U-shaped whitening tray with an embedded skeleton according to the present invention.

[0019] Figure 2 is a schematic diagram of the layered structure of a U-shaped whitening tray with an embedded skeleton according to the present invention. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] A U-shaped teeth whitening tray with an embedded skeleton is a U-shaped tray-like structure formed by an outer wall 1, a bottom wall 2, and an inner wall 3. The tray is characterized by comprising, from the inside out, a whitening gel layer 4, a flexible skeleton structure 5, an adhesive gel layer 6, and a barrier film layer 7. The whitening gel layer 4 contains a teeth whitening agent. The flexible skeleton structure 5 is formed by embedding a non-woven fabric 52 within two pre-formed upper and lower wax-based or silicone layers 51. During the preparation of the tray, the flexible skeleton structure 5 is used as the core, and a whitening gel composition and an adhesive gel composition are applied to its upper and lower surfaces respectively. After drying, a layered structure is formed by integrally molding the whitening gel layer 4, the flexible skeleton structure 5, and the adhesive gel layer 6. Then, the barrier film layer 7 is attached to the outside of the gel adhesive layer. The barrier film layer 7 is a PO film. The non-woven fabric has two upper and lower arc-shaped guide lines 521, which facilitates the folding of the flexible skeleton structure 5 along the guide lines to form a U-shaped tray-like structure. The whitening gel composition includes alcohol and glycerin as solvents, one or more of peroxide, PAP, and sodium hypochlorite as teeth whitening agents, one or more of sodium polyacrylate, acrylate copolymers, PVP, and ethyl cellulose as thickeners and binders, and also includes sweeteners, flavorings, and pH adjusters. The content of the teeth whitening agent is greater than 8%. The adhesive gel composition includes alcohol and glycerin as solvents, and one or more of sodium polyacrylate, acrylate copolymers, PVP, and ethyl cellulose as thickeners and binders. The adhesive gel composition also includes a gingival protectant. The inner wall of the U-shaped whitening tray has two notches. The overall thickness of the tray is less than 1 mm.

[0023] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A U-shaped whitening tray with embedded framework, which is a U-shaped tray structure formed by an outer wall, a bottom wall and an inner wall, characterized in that, The tray comprises, from inside to outside, a whitening gel layer, a flexible framework structure, an adhesive gel layer and a barrier film layer, wherein the whitening gel layer comprises a tooth bleaching agent, the flexible framework structure is formed by embedding non-woven fabric in a wax-based layer or a silica gel layer with specific properties, and when the tray is prepared, the flexible framework structure is taken as the core, the whitening gel composition and the adhesive gel composition are respectively coated on the upper and lower parts, and after drying, the layered structure of the whitening gel layer, the flexible framework structure and the adhesive gel layer is formed, and then the barrier film layer is attached to the outside of the adhesive gel layer.

2. The U-shaped whitening tray of claim 1, wherein, The barrier film layer is a PO film.

3. The U-shaped teeth whitening tray with an embedded skeleton as described in claim 1, characterized in that, The non-woven fabric is provided with two arc-shaped guide lines on the upper and lower parts, so that the flexible framework structure is easily folded along the guide lines to form a U-shaped tray structure.

4. The U-shaped teeth whitening tray with an embedded skeleton as described in claim 1, characterized in that, The whitening gel composition comprises alcohol and glycerol as solvents, one or more of peroxide, PAP and sodium hypochlorite as tooth bleaching agents, one or more of sodium polyacrylate, acrylic copolymer, PVP and ethyl cellulose as thickening adhesives, and also comprises sweeteners, fragrances and PH adjusters.

5. A U-shaped teeth whitening tray with an embedded skeleton as described in claim 4, characterized in that, The content of the tooth bleaching agent is greater than 8%.

6. The U-shaped teeth whitening tray with an embedded skeleton as described in claim 1, characterized in that, The adhesive gel composition comprises alcohol and glycerol as solvents, and one or more of sodium polyacrylate, acrylic copolymer, PVP and ethyl cellulose as thickening adhesives.

7. The U-shaped teeth whitening tray with an embedded skeleton as described in claim 7, characterized in that, The adhesive gel composition also comprises a gingival protective agent.

8. The U-shaped teeth whitening tray with an embedded skeleton as described in claim 1, characterized in that, The inner wall of the U-shaped whitening tray is provided with two notches.

9. A U-shaped teeth whitening tray with an embedded skeleton as described in claim 1, characterized in that, The thickness is less than 1 mm.

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