CN218458198U

CN218458198U - Toothbrush head and electric toothbrush

Info

Publication number: CN218458198U
Application number: CN202121149915.0U
Authority: CN
Inventors: 朱学仕; 黄道臣; 黄拔梓
Original assignee: Shenzhen Lebond Technology Co ltd
Current assignee: Shenzhen Lebond Technology Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2023-02-10
Anticipated expiration: 2031-05-26

Abstract

The application provides a toothbrush head for electric toothbrush, including head and neck, the head is provided with the brush hair that is used for cleaning the tooth, and the one end of neck is connected in electric toothbrush, and the neck can be dismantled with the head and be connected or integrated into one piece sets up, and the toothbrush head is equipped with antibiotic layer at the local surface of head or neck or global surface at least. The present application further provides an electric toothbrush comprising a toothbrush head. The toothbrush head provided by the application is provided with the antibacterial layer on at least the local surface or the overall surface of the head or the neck, so that the antibacterial capability of the toothbrush head can be improved under the condition that disinfection and sterilization equipment is not additionally added, and the toothbrush head is convenient to use.

Description

Toothbrush head and electric toothbrush

Technical Field

The application belongs to the technical field of toothbrushes, and particularly relates to a toothbrush head and an electric toothbrush.

Background

In daily tooth brushing, no matter the electric toothbrush or the manual toothbrush, the toothbrush head is easily stained with dirt such as toothpaste residue, foam, mouthwash and the like, and the long-time dirt is easy to breed bacteria, so that the oral health of people can be seriously influenced. The toothbrush head can be irradiated by a deep ultraviolet disinfection lamp to achieve the purpose of sterilization. In the prior art, the toothbrush adopts a deep ultraviolet disinfection lamp (namely disinfection and sterilization equipment) for irradiation sterilization, and the disinfection and sterilization equipment needs to be additionally arranged, so that the toothbrush is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

An object of this application embodiment is to provide a toothbrush head and electric toothbrush to toothbrush sterilization that exists among the solution prior art needs additionally to increase disinfection and isolation equipment, the technical problem of inconvenient use.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the toothbrush head for the electric toothbrush comprises a head part and a neck part, wherein the head part is provided with bristles for cleaning teeth, one end of the neck part is connected to the electric toothbrush, the neck part is detachably connected with the head part or integrally formed with the head part, and the toothbrush head is provided with an antibacterial layer on at least the partial surface or the whole surface of the head part or the neck part.

Optionally, the antibacterial layer comprises a physical microstructure layer, the physical microstructure layer is formed by a plurality of dentate convex grains, and a bacteriostatic space is formed between every two adjacent convex grains.

Optionally, the maximum width of the bacteriostatic space is 10 to 30 microns.

Optionally, the antibacterial layer further comprises a nano material layer.

Optionally, the nano material layer is stacked with the physical microstructure layer and the toothbrush head surface, and the nano material layer is located between the toothbrush head surface and the physical microstructure layer.

Optionally, the nanomaterial layer is stacked with the physical microstructure layer and the toothbrush head surface, and the physical microstructure layer is located between the toothbrush head surface and the nanomaterial layer.

Optionally, a nano-protection layer covers the physical microstructure layer.

Optionally, the nanomaterial layer comprises nanosilica.

Optionally, at least the outermost layer of the head or neck contains metal ions.

The present application further provides an electric toothbrush comprising a head for an electric toothbrush of any of the above.

The toothbrush head provided by the application has the beneficial effects that: compared with the prior art, the toothbrush head of the application is provided with the antibacterial layer on the local surface or the global surface of the head or the neck at least, so that the antibacterial capability of the toothbrush head can be improved under the condition that disinfection and sterilization equipment is not additionally added, and the toothbrush head is convenient to use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Figure 1 is a schematic view of a toothbrush head constructed in accordance with an embodiment of the present application;

fig. 2 is a schematic diagram of a physical microstructure layer provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a nanomaterial layer provided in an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of the surface of a toothbrush head provided in accordance with an embodiment of the present application;

FIG. 5 is a cross-sectional view of a toothbrush head covered with a layer of nanomaterial provided in the present application;

FIG. 6 is a schematic cross-sectional view of a layer of nanomaterial provided in accordance with an embodiment of the present application stacked with a physical microstructure layer and a surface of a toothbrush head;

FIG. 7 is a schematic view of a metal ion antibacterial layer provided in an embodiment of the present application;

FIG. 8 is a schematic view of a toothbrush head containing metal ions according to an embodiment of the present application;

fig. 9 is a schematic structural view of a toothbrush handle provided in an embodiment of the present application.

Wherein, in the figures, the various reference numbers:

100-toothbrush head; 10A-a first region; 10B-a second region; 10-physical microstructure layer; 101-bacteriostatic space; 11-raised lines; 12-a bacterium; 20-a layer of nanomaterial; 30-metal ion antibacterial layer; 31-metal ions; 41-a head; 42-neck portion; 50-the surface of the toothbrush head; 200-toothbrush handle; 201-press keys; 202-drive rod.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in operation as a limitation of the application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The present application provides a toothbrush head 100 for a power toothbrush and a power toothbrush including the toothbrush head 100.

Referring to figure 1, a toothbrush head 100 according to the present application is now described. The toothbrush head 100 includes a head 41 and a neck 42, the head 41 is provided with bristles for cleaning teeth, one end of the neck 42 is connected to the electric toothbrush, the neck 42 is detachably connected to or integrally formed with the head 41, and the toothbrush head 100 is provided with an antibacterial layer at least on a partial surface or a whole surface of the head 41 or the neck 42.

The toothbrush head 100 provided by the application has the beneficial effects that: compared with the prior art, the toothbrush head 100 of the present application is provided with the antibacterial layer at least on the partial surface or the entire surface of the head 41 or the neck 42, so that the antibacterial capability of the toothbrush head 100 can be improved without additionally adding a sterilizing device, and the toothbrush head 100 is convenient to use.

Referring to fig. 2, in another embodiment of the present application, the antibacterial layer includes a physical microstructure layer 10, the physical microstructure layer 10 is formed by a plurality of tooth-shaped raised grains 11, and a bacteriostatic space 101 is formed between two adjacent raised grains 11. The shape of the raised ridges 11 may be regular or irregular. The irregular raised lines 11 may be irregular lines. The physical microstructure layer 10 has no particular requirement for the shape of the grain.

The bacteria 12 propagate (merogenesis) primarily in a asexual binary division manner, i.e., the bacteria 12 grow to a certain period of time, gradually form transverse septa in the middle of the cells, and divide one mother cell into two daughter cells of equal size. The fission of the bacteria 12 requires a certain space for fission, and the fission of the bacteria 12 can be inhibited by limiting the space for fission of the bacteria 12, thereby playing an antibacterial role.

The physical microstructure layer 10 may adopt a biomimetic physical antibacterial technology, and invisible, regular or irregular special fine lines are added on the surface of the product, wherein the intervals between the lines are about 20 microns, so as to form a physical microstructure antibacterial layer, so that the bacteria 12 have no fissile space, thereby inhibiting the fission of the bacteria 12. The physical microstructure layer 10 has no particular requirement for the shape of the texture.

In another embodiment of the present application, the maximum width of the bacteriostatic space 101 is 10 to 30 micrometers. The width of the bacteriostatic space 101 is less than 30 microns, so that the bacteriostatic effect can be generated. When the width of the bacteriostatic space 101 is about 10 micrometers, the bacteriostatic effect is optimal, but the difficulty of production and manufacturing is relatively large. When the width of the bacteriostatic space 101 is about 30 micrometers, the difficulty in production and manufacturing is relatively low. In some examples, the height of the raised ridges 11 is 10 micrometers to 30 micrometers, and the distance between the mutually opposite sides of two adjacent raised ridges 11 is 10 micrometers to 30 micrometers. A bacteriostatic space 101 is formed between two adjacent raised grains 11, and bacteria 12 fall into the bacteriostatic space 101. The depth of the bacteriostatic space 101 may be 10 to 30 micrometers, and the width may be 10 to 30 micrometers. The bacteriostatic space 101 is small relative to the volume of the bacteria 12, limiting the fission of the bacteria 12, thereby having an antibacterial function. In some examples, the raised ridges 11 have a width of 10 to 30 microns.

Referring to fig. 3, in another embodiment of the present application, the antibacterial layer further includes a nanomaterial layer 20. The nanomaterial layer 20 may have a hydrophobic and oleophobic function. In some examples, nanomaterial layer 20 is a coating formed by spraying a hydrophobic and oleophobic material onto the surface of toothbrush head 100. The material of the nanomaterial layer 20 includes silicon dioxide. The nano material layer 20 is sprayed with a composite coating material to form an antibacterial layer with chemical coating, so that the surface of the product has good oleophobic and hydrophobic properties, and the dirty residue is reduced, thereby having the antibacterial function. The material of the nanomaterial layer 20 is mainly silicon dioxide. The nano material layer 20 can use nano silicon dioxide as a raw material, and a coating is formed on the surface of a product by adopting a spraying process, so that the nano material layer has good light transmittance and hydrophobic and oleophobic properties. The physical microstructure layer 10 and the nanomaterial layer 20 may be staggered or overlapped with each other.

Referring also to fig. 4-6, in another embodiment of the present application, the nanomaterial layer 20 is laminated to the physical microstructure layer 10 and the toothbrush head surface 50, and the nanomaterial layer 20 is located between the toothbrush head surface 50 and the physical microstructure layer 10. Physical microstructure layer 10 is located on the outer surface of toothbrush head 100, and raised grains 11 of physical microstructure layer 10 may be formed on nanomaterial layer 20. The brush head surface 50 may be the surface of the body material of the brush head 100. The surface 50 of the toothbrush head is microscopically irregular, and the formation of a physical microstructure directly on the irregular surface is not easy to achieve or difficult to meet bacteriostatic requirements. Therefore, the surface 50 of the toothbrush head is covered with a nanometer material layer 20 to obtain a flat surface, and then the physical microstructure layer 10 is formed on the flat surface, so that the physical microstructure layer 10 can generate an antibacterial effect.

In another embodiment of the present application, a nanomaterial layer 20 is layered with a physical microstructure layer 10 and a toothbrush head surface 50, the physical microstructure layer 10 being located between the toothbrush head surface 50 and the nanomaterial layer 20. The nanomaterial layer 20 is located on the outer surface of the toothbrush head 100 and the physical microstructure layer 10 is covered by the nanomaterial layer 20. The long-term use of the toothbrush may cause the raised grains 11 of the physical microstructure layer 10 to be ground flat, thereby affecting the antibacterial effect, so that the nano material layer 20 is covered thereon, thereby reducing the abrasion of the physical microstructure layer 10. Meanwhile, the nano material layer 20 has hydrophobicity, so that the adhesion of bacteria can be reduced, and the antibacterial effect is further improved by the double antibacterial layers.

In another embodiment of the present application, the physical microstructure layer 10 is covered with a nano-protection layer. The nano protective layer can protect the physical microstructure layer 10 from abrasion, and can also be oleophobic and hydrophobic, so that the adhesion of bacteria is reduced, and the antibacterial effect is further improved. In some examples, the physical microstructure layer 10 is on top of the toothbrush head surface 50 and the nano-protective layer is on top of the physical microstructure layer 10. In other examples, the toothbrush head surface 50 is covered by the nanomaterial layer 20, the nanomaterial layer 20 is covered by the physical microstructure layer 10, and the physical microstructure layer 10 is covered by the nano-overcoat layer. The nanomaterial layer 20 and the nanolayer may have the same material and structure.

In another embodiment of the present application, the nanomaterial layer 20 comprises nanosilica. The nano silicon dioxide is non-toxic, tasteless and pollution-free, has a spherical microstructure, is in a flocculent and reticular quasi-particle structure, has the optical performance of resisting ultraviolet rays, and can improve the ageing resistance, strength and chemical resistance of other materials. The nano-silica enables the nano-material layer 20 to have the functions of oil and water repellency and better wear resistance.

Referring to fig. 7, in another embodiment of the present application, at least the outermost layer of the head 41 or neck 42 contains metal ions 31. The metal ions 31 can destroy the cell membrane of the bacteria 12, enter the cell, enable certain cell components to escape, lose due biological functions, and die to achieve the purposes of disinfection and antibiosis.

Toothbrush head 100 is further described below.

Head 100 may be used with a manual or powered toothbrush. In some examples, head 100 may be used in a power toothbrush, with head 100 having bristles for cleaning teeth on one end and being removably connected to a motor body on the other end.

The physical microstructure layer 10 can adopt a bionics physical antibacterial technology, and special fine grains which are invisible to naked eyes, regular or irregular are added on the surface of the product, the intervals among the grains are about 20 micrometers, so that a physical microstructure antibacterial layer is formed, the bacteria 12 have no splittable space, and the fission of the bacteria 12 is inhibited. The irregular special fine lines can be irregular random curves. The physical microstructure antibacterial layer has no special requirement on the shape of the grains.

In another embodiment of the present application, the height of the raised ridges 11 is 10 micrometers to 30 micrometers, and the distance between the mutually opposite side surfaces of two adjacent raised ridges 11 is 10 micrometers to 30 micrometers. A bacteriostatic space 101 is formed between two adjacent raised lines 11, and bacteria 12 fall into the bacteriostatic space 101. The bacteriostatic space 101 may have a depth of 10 to 30 micrometers and a width of 10 to 30 micrometers. The bacteriostatic space 101 is small relative to the volume of the bacteria 12, limiting the fission of the bacteria 12, thereby having an antibacterial function. In some examples, the raised ridges 11 have a width of 10 to 30 microns.

Referring to figure 3, in another embodiment of the present application, the surface of head 100 is further provided with a layer of nanomaterial 20, nanomaterial 20 being a coating formed by spraying a hydrophobic and oleophobic material onto the surface of head 100. The material of the nanomaterial layer 20 includes silicon dioxide. The nano material layer 20 is sprayed with a composite coating material to form an antibacterial layer with chemical coating, so that the surface of the product has good oleophobic and hydrophobic properties, and the dirty residue is reduced, thereby having the antibacterial function. The nanomaterial layer 20 is predominantly silicon dioxide. The nano material layer 20 can use nano silicon dioxide as a raw material, and a coating is formed on the surface of a product by adopting a spraying process, so that the nano material layer has good light transmittance and hydrophobic and oleophobic properties. The physical microstructure layer 10 and the nanomaterial layer 20 may be staggered or overlapped with each other.

In another embodiment of the present application, the raised grains 11 are formed on the nanomaterial layer 20. An antibacterial space 101 capable of inhibiting the fission of bacteria 12 is formed between two adjacent raised grains 11, and the nano material layer 20 has good oleophobic and hydrophobic properties, so that the dirt residue is reduced, and the double antibacterial function is achieved.

Referring to fig. 7, in another embodiment of the present application, toothbrush head 100 is further provided with a metal ion antibacterial layer 30. The metal ion antibacterial layer 30 can adopt a metal ion disinfection technology, and an antibacterial layer with metal ions 31 is formed by fusing and mixing metal ions 31 (such as metal ions of copper, zinc, tin and the like) in a product material, wherein the metal ions 31 destroy cell membranes of the bacteria 12 and enter the inside of cells, so that certain cell components of the bacteria escape, and the proper biological functions are lost until the bacteria die, and the aims of disinfection and antibiosis are achieved. The physical microstructure layer 10, the nano material layer 20 and the metal ion antibacterial layer 30 may be staggered or overlapped with each other. In some examples, the raised lines 11 are formed on the metal ion antibacterial layer 30. A bacteriostatic space 101 capable of inhibiting the fission of the bacteria 12 is formed between two adjacent raised grains 11, and the metal ions 31 of the metal ion antibacterial layer 30 can kill the bacteria 12, so that the double antibacterial function is achieved.

Referring again to fig. 1, in another embodiment of the present application, a toothbrush head 100 includes a head 41 provided with bristles and a neck 42 connected to the head 41, wherein the side of the head 41 provided with bristles is a front side and the side opposite to the front side is a back side. The toothbrush head 100 has a first region 10A where raised lines 11 are formed in the nanomaterial layer 20 at the first region 10A. The toothbrush head 100 further has a second region 10B, and in the second region 10B, the convex lines 11 are formed on the metal ion antibacterial layer 30. In some examples, the first region 10A is located on the back side of the head 41 and the second region 10B is located on the outer peripheral surface of the neck 42. A first region 10A is located on the back side of head 41 of head 100, and in the first region 10A, raised ridges 11 are formed in nanomaterial layer 20; the first region 10A is generally located in the oral cavity when brushing teeth, and has a high antibacterial requirement, and the raised grains 11 and the nano material layer 20 have a dual antibacterial function, so that the oral health of a user can be further improved; after tooth brushing, toothpaste foam residue and mouthwash residue are easy to accumulate in the first area 10A, and the first area 10A is provided with the raised grains 11 and the nano material layer 20, so that the dual antibacterial function is realized, and the oral health of a user can be further improved. The second region 10B is located on the outer circumferential surface of the neck 42, and in the second region 10B, the convex lines 11 are formed on the metal ion antibacterial layer 30, and the convex lines 11 and the metal ion antibacterial layer 30 have a dual antibacterial function in combination, so that the cleanliness of the toothbrush head 100 can be further improved. In other examples, the portion of the toothbrush head 100 having the bristles may be provided with the metal ion antibacterial layer 30, and other portions of the toothbrush head 100 may be provided with the physical microstructure layer 10 and/or the nanomaterial layer 20.

Referring to fig. 8, in another embodiment of the present application, the material of toothbrush head 100 contains metal ions 31 having an antibacterial function. Therefore, the entire toothbrush head 100 can have an antibacterial function, which is advantageous to improve the antibacterial effect of the toothbrush head 100. In some examples, the toothbrush head 100 is made of plastic containing metal ions 31 having an antibacterial function, and the physical micro-structural layer 10 is provided on the surface of the toothbrush head 100, thereby further improving the antibacterial effect of the toothbrush head 100.

Referring to fig. 9, the present application also provides a toothbrush handle 200, and the toothbrush handle 200 may be used for a manual toothbrush or an electric toothbrush. In some examples, toothbrush handle 200 may be used with a power toothbrush, with button 201 on toothbrush handle 200 and drive shaft 202 at one end for connection to head 100. The surface of the toothbrush handle 200 is provided with a physical microstructure layer 10. When a user brushes teeth by holding the toothbrush handle 200, the physical micro-structural layer 10 on the surface of the toothbrush handle 200 can play an antibacterial role. The toothbrush handle 200 may be the handle of a manual toothbrush or the power body of an electric toothbrush. The surface of the toothbrush handle 200 may also be provided with a nano material layer 20 and a metal ion antibacterial layer 30, and the physical microstructure layer 10, the nano material layer 20 and the metal ion antibacterial layer 30 may be staggered or overlapped with each other. In some examples, the material of the toothbrush handle 200 contains metal ions 31 having an antibacterial function. Therefore, the whole toothbrush handle 200 has an antibacterial function, and the antibacterial effect of the toothbrush handle 200 is improved. In some examples, the toothbrush handle 200 is made of plastic containing metal ions 31 having an antibacterial function, and the physical micro-structural layer 10 is provided on the surface of the toothbrush handle 200, thereby further improving the antibacterial effect of the toothbrush handle 200.

The present application further provides a toothbrush. The toothbrush may be a manual toothbrush or an electric toothbrush. In some examples, the toothbrush includes a toothbrush head 100 having an antibacterial function, and the toothbrush head 100 is provided with a physical micro-structural layer 10, a nano-material layer 20, or a metal ion antibacterial layer 30.

In another embodiment of the present application, the toothbrush includes a toothbrush handle 200 having an antibacterial function, and the toothbrush handle 200 is provided with a physical micro-structural layer 10, a nano-material layer 20, or a metal ion antibacterial layer 30.

In another embodiment of the present application, the toothbrush includes a toothbrush head 100 having an antibacterial function and a toothbrush handle 200 having an antibacterial function, and the toothbrush head 100 and the toothbrush handle 200 may be provided with a physical microstructure layer 10, a nanomaterial layer 20, or a metal ion antibacterial layer 30.

The application provides a toothbrush is from taking antibacterial function, need not dispose sterilizing equipment in addition, and the cost is lower, portable and use.

The present application provides an antibacterial layer on a part or the whole of the toothbrush head 100 or the toothbrush handle 200, and the antibacterial layer can be implemented in three ways according to the characteristics of the asexual propagation and division of the bacteria 12.

The first mode adopts a bionic physical antibacterial technology, invisible, regular or irregular special fine lines are added on the surface of a product, the intervals are about 20 microns, and a physical microstructure antibacterial layer is formed, so that bacteria have no fissile space.

The second mode adopts the technology of the nanometer material layer 20, and the composite coating material is sprayed on the surface of the product to form an antibacterial layer with chemical coating, so that the product has good oleophobic and hydrophobic properties, and the dirty residue is reduced, thereby being antibacterial. The composite coating material mainly comprises nano silicon dioxide (SiO 2).

The third mode adopts metal ion disinfection technology, an antibacterial layer with metal ions 31 is formed by fusing and mixing metal ions 31 (such as copper ions, zinc ions, tin ions and other metal ions) in a product material, and the metal ions 31 destroy bacterial cell membranes and enter the inside of cells to enable certain cell components to escape and lose due biological functions until the cells die, so that the aims of disinfection and antibiosis are achieved. In addition, the metal ions 31 can be added into the shell material of the toothbrush head 100 or the toothbrush handle 200, and the metal ion antibacterial layer 30 does not need to be arranged separately, so that the toothbrush processing procedures are reduced.

The above art common location areas include the entire surface, body facing, and other exposed relevant facing areas of a power or manual toothbrush.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A toothbrush head for an electric toothbrush, comprising a head provided with bristles for cleaning teeth and a neck having one end connected to the electric toothbrush, characterized in that:

the neck part and the head part are detachably connected or integrally formed, and the toothbrush head is at least provided with an antibacterial layer on the local surface or the overall surface of the head part or the neck part;

the antibacterial layer comprises a physical microstructure layer, the physical microstructure layer is composed of a plurality of dentate convex grains, and a bacteriostatic space is formed between every two adjacent convex grains;

the maximum width of the bacteriostatic space is 10-30 microns.

2. A toothbrush head for an electric toothbrush according to claim 1, characterized in that the antibacterial layer further comprises a nanometer material layer which is a hydrophobic and oleophobic material coating.

3. The head for a power toothbrush of claim 2, wherein the nanomaterial layer is disposed in a stack with the physical microstructure layer and the head surface, the nanomaterial layer being between the head surface and the physical microstructure layer.

4. A toothbrush head for a power toothbrush as claimed in claim 2, wherein the nanomaterial layer is laminated to the physical microstructure layer and to the surface of the toothbrush head, the physical microstructure layer being between the surface of the toothbrush head and the nanomaterial layer.

5. A head for an electric toothbrush according to claim 1 or 3, characterized in that the physical microstructure layer is covered with a nano-protective layer.

6. A head for an electric toothbrush according to any one of claims 2 to 4, characterised in that the nanomaterial layer comprises nanosilica.

7. A head for an electric toothbrush according to any one of claims 1 to 4, characterised in that at least the outermost layer of the head or neck contains metal ions.

8. An electric toothbrush comprising a head for an electric toothbrush according to any one of claims 1 to 7.