Microstructure surface self-lubricating ceramic bracket based on photocuring additive manufacturing

Abstract

The utility model relates to a microstructure surface self-lubricating ceramic bracket based on photocuring additive manufacturing, which structurally comprises a base, an arch wire groove for accommodating an arch wire is arranged on the base, a plurality of microstructures are arranged on the bottom surface of the arch wire groove at intervals, and a flow guide gap is formed between every two adjacent microstructures; the microstructure is a protruding structure higher than the bottom face of the arch wire groove, the top face of the microstructure is used for making contact with the arch wire, and the sum of the height of the microstructure and the height of the arch wire is not larger than the depth of the arch wire groove. The flow guide gap is used for sucking saliva into the flow guide gap through the capillary force effect, and lubrication is provided for the contact face between the microstructure and the arch wire. The utility model solves the problem of poor orthodontic effect caused by reduction of positive pressure applied to teeth by the arch wire due to large frictional resistance between the ceramic bracket and the arch wire, and greatly improves the stability of the structure and prolongs the service life of the structure.

Description

Technical Field

[0001] The utility model relates to the technical field of oral orthodontic devices, in particular to a self-lubricating ceramic bracket with a microstructure surface manufactured by photocuring additive manufacturing based on photocuring additive manufacturing. Background Art

[0002] Brackets are the main parts of the orthodontic appliance used to fix teeth and upper and lower jaws during orthodontic treatment. The brackets currently used mainly include metal brackets, plastic brackets and ceramic brackets. Since ceramic brackets have the advantages of beauty and comfort, there is an increasing demand for ceramic brackets. However, ceramic brackets have the following problems: During the use of the archwire, since the archwire is made of metal (stainless steel or titanium alloy), and the archwire slot of the ceramic bracket is made of non-metallic material, the friction resistance of the archwire is relatively large. During correction, the archwire is set to the rated tension, and the rated tension remains unchanged. When the friction resistance increases, the force applied to the corrected teeth through the bracket becomes smaller, which seriously affects the correction effect.

[0003] In the prior art, a solution of installing a metal sheet in the archwire slot is adopted to solve the above problem. The metal sheet is processed into a shape matching the outline of the archwire slot, and the metal sheet is added to the ceramic bracket, which has a skeleton effect in the ceramic bracket. The friction between the archwire and the bracket is converted into the friction between the archwire and the metal sheet, thereby reducing the friction resistance. However, the problem with this solution is that due to the small size of the archwire slot, it causes great inconvenience to the processing and assembly of the metal sheet. In addition, the combination of the two materials is not strong, and the metal sheet is easy to separate from the ceramic bracket when subjected to torsion, resulting in poor stability of the entire bracket structure. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a self-lubricating ceramic bracket with a microstructure surface based on photocuring additive manufacturing, which solves the technical problems of large friction resistance between the ceramic bracket and the archwire, inconvenient assembly and poor structural stability.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A self-lubricating ceramic bracket with a microstructure surface manufactured based on photocuring additive manufacturing, the structure of which includes a base, an archwire slot for accommodating an archwire, a plurality of microstructures are arranged at intervals on the bottom surface of the archwire slot, and a guide gap is formed between two adjacent microstructures;

[0007] The microstructure is a protruding structure higher than the bottom surface of the archwire slot, and its top surface is used to contact the archwire, and the sum of the height of the microstructure and the height of the archwire is not greater than the depth of the archwire slot;

[0008] The guide gap is used to absorb saliva into it through capillary action, so as to provide lubrication for the contact surface between the microstructure and the arch wire.

[0009] Further technical solutions are:

[0010] The plurality of microstructures are distributed at intervals along the length direction of the archwire slot, or distributed at intervals along the width direction of the archwire slot.

[0011] Each of the microstructures is in a straight line, an arc line or a broken line shape.

[0012] The width of the guide gap is 100-500 μm, and the height of the microstructure is 20-500 μm.

[0013] The plurality of microstructures are distributed at equal intervals.

[0014] The cross section of the microstructure is semicircular, rectangular or trapezoidal.

[0015] The ceramic bracket is prepared and formed by light-curing additive manufacturing, that is, the microstructure, the archwire slot and the base are formed in one piece.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model arranges spaced microstructures on the bottom surface of the archwire slot, and generates capillary action through the gaps formed between the microstructures, so as to introduce saliva into the contact surface between the archwire, the archwire slot and the microstructure, thereby greatly reducing the friction coefficient of the contact interface, thereby reducing friction resistance, ensuring that the positive pressure applied by the archwire to the teeth is within a set range, and ensuring the correction effect.

[0018] The utility model has the advantages of simple preparation, flexible and convenient adjustment of design parameters, no need for assembly, and good structural stability.

[0019] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1 of the utility model.

[0021] Figure 2 for Figure 1 main view.

[0022] Figure 3 for Figure 1 Top view of the .

[0023] Figure 4 for Figure 1 Left view of .

[0024] Figure 5 It is a top view of embodiment 2 of the utility model.

[0025] Figure 6 This is a schematic diagram of the structure of Example 3 of the utility model.

[0026] Figure 7 This is a schematic diagram of the structure of Example 4 of the utility model.

[0027] Figure 8 This is a schematic diagram of the structure of Example 5 of the present utility model.

[0028] Fig. 9 for Figure 8 Left view of .

[0029] In the figure: 1. Base; 2. Microstructure; 3. Guide gap; 4. Archwire slot. DETAILED DESCRIPTION

[0030] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figures 1 to 4 As shown, the microstructure surface self-lubricating ceramic bracket based on light-curing additive manufacturing of this embodiment comprises a base 1, on which an archwire slot 4 for accommodating an archwire is provided, and ligation wings are symmetrically provided on both sides of the archwire slot 4. The archwire slot 4 is U-shaped, and a plurality of microstructures 2 are arranged at intervals on the bottom surface thereof, and a guide gap 3 is formed between two adjacent microstructures 2;

[0033] The microstructure 2 is a protruding structure higher than the bottom surface of the archwire slot 4, and its top surface is used to contact the archwire, and the sum of the height of the microstructure 2 and the height of the archwire is not greater than the depth of the archwire slot 4;

[0034] The guide gap 3 is used to absorb saliva into it through capillary force, thereby providing lubrication for the contact surface between the microstructure 2 and the arch wire.

[0035] In this embodiment, a plurality of microstructures 2 are distributed at intervals along the length direction of the archwire slot 4 , and each microstructure 2 is linear and perpendicular to the length direction of the archwire slot 4 .

[0036] Specifically, the width of the flow-guiding gap 3 is 100-500 μm, and the height of the microstructure 2 is 20-500 μm.

[0037] Specifically, the plurality of microstructures 2 are distributed at equal intervals or at unequal intervals.

[0038] Specifically, the cross section of the microstructure 2 is semicircular. Figure 4 shown.

[0039] During use of this embodiment, the archwire is limited in the archwire slot by the self-locking mechanism, the bottom surface of the archwire contacts the top surfaces of several microstructures, and the saliva in the oral cavity enters and fills the capillary channel formed by the guide gap under the capillary action. The archwire tightens the teeth through the bracket and gradually moves in the archwire slot for a long time and in a small way, thereby achieving correction. During the movement of the archwire relative to the archwire slot (in the length direction), the saliva will adhere to the contact surface between the archwire and the microstructure, thereby greatly reducing the friction coefficient of the contact surface, thereby reducing the friction resistance of the archwire, and achieving self-lubrication.

[0040] The self-lubricating ceramic bracket with a microstructure surface based on photocuring additive manufacturing in this embodiment is prepared by photocuring additive manufacturing, that is, the microstructure 2, the archwire slot 4 and the base 1 are integrally formed. The size of the overall structure, as well as the specific size of the guide gap and the microstructure can be adaptively adjusted according to actual conditions and application requirements.

[0041] Example 2

[0042] like Figure 5 As shown, the self-lubricating ceramic bracket with a microstructure surface manufactured based on photocuring additive manufacturing in this embodiment is different from that in Embodiment 1 in that the microstructure 2 is tilted and has an acute angle with the length direction of the archwire slot 4 .

[0043] Example 3

[0044] like Figure 6 As shown, the self-lubricating ceramic bracket with a microstructure surface manufactured based on photocuring additive manufacturing in this embodiment is different from that in Embodiment 1 in that each microstructure 2 is in a broken line shape, specifically a V-shape.

[0045] As another embodiment, the microstructure 2 is in the shape of a curve, a fold line, or an irregular line.

[0046] Example 4

[0047] like Figure 7 As shown, the self-lubricating ceramic bracket with a microstructure surface manufactured based on photocuring additive manufacturing in this embodiment is different from that in Embodiment 1 in that a plurality of microstructures 2 are spaced apart along the width direction of the archwire slot 4, and each microstructure 2 is linear and extends along the length direction of the archwire slot 4.

[0048] As another embodiment, the microstructure 2 is in the shape of a broken line, a curve, or an irregular line and extends along the length direction of the archwire slot 4 .

[0049] Example 5

[0050] like Figure 8 and Fig. 9 As shown, the self-lubricating ceramic bracket with a microstructure surface manufactured based on photocuring additive manufacturing in this embodiment is different from that in Embodiment 1 in that the cross section of the microstructure 2 is a trapezoid.

[0051] As another embodiment, the cross section of the microstructure 2 is rectangular, triangular or other shapes.

[0052] In summary, the self-lubricating ceramic bracket with a microstructure surface based on photocuring additive manufacturing in the present application is easy to prepare and does not require assembly. It solves the problem that the large friction resistance between the ceramic bracket and the archwire causes a decrease in the positive pressure applied by the archwire to the teeth, resulting in poor correction effect.

[0053] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-lubricating ceramic bracket with a microstructured surface manufactured based on photo-curing additive manufacturing, comprising a base (1) on which an archwire slot (4) for accommodating an archwire is provided, characterized in that: A plurality of microstructures (2) are arranged at intervals on the bottom surface of the archwire slot (4), and a flow guide gap (3) is formed between two adjacent microstructures (2); The microstructure (2) is a protruding structure that is higher than the bottom surface of the archwire slot (4), and its top surface is used to contact the archwire, and the sum of the height of the microstructure (2) and the height of the archwire is not greater than the depth of the archwire slot (4); The guide gap (3) is used to absorb saliva into it through capillary action, thereby providing lubrication for the contact surface between the microstructure (2) and the arch wire.

2. The self-lubricating ceramic bracket with microstructured surface based on photo-curing additive manufacturing according to claim 1, characterized in that: The plurality of microstructures (2) are distributed at intervals along the length direction of the archwire slot (4), or are distributed at intervals along the width direction of the archwire slot (4).

3. The self-lubricating ceramic bracket with microstructured surface based on photo-curing additive manufacturing according to claim 1, characterized in that: Each of the microstructures (2) is in a straight line, an arc line or a broken line shape.

4. The self-lubricating ceramic bracket with microstructured surface based on photo-curing additive manufacturing according to claim 1, characterized in that: The width of the guide gap (3) is 100-500 μm, and the height of the microstructure (2) is 20-500 μm.

5. The self-lubricating ceramic bracket with microstructured surface based on photo-curing additive manufacturing according to claim 1, characterized in that: The plurality of microstructures (2) are distributed at equal intervals.

6. The self-lubricating ceramic bracket with microstructured surface based on photo-curing additive manufacturing according to claim 1, characterized in that: The cross section of the microstructure (2) is semicircular, rectangular or trapezoidal.

7. The self-lubricating ceramic bracket with microstructure surface based on photo-curing additive manufacturing according to any one of claims 1 to 6, characterized in that: The ceramic bracket is manufactured and formed by means of photo-curing additive manufacturing, that is, the microstructure (2), the archwire slot (4) and the base (1) are integrally formed.

Images