Device and method for testing frictional corrosion of orthodontic arch wire

Abstract

The invention discloses an orthodontic correction arch wire friction corrosion testing device and method, and the device comprises an electrochemical corrosion testing assembly which is used for placing an arch wire and accommodating artificial saliva, enabling the arch wire to be soaked in the artificial saliva, and carrying out the electrochemical testing of the arch wire in the artificial saliva, so as to output a corresponding corrosion testing signal; the frictional wear test assembly is arranged corresponding to the electrochemical corrosion test assembly and is used for fixing the bracket and carrying out a friction test on the bracket and the arch wire so as to output a corresponding friction test signal; the acquisition end of the data acquisition and calculation assembly is respectively connected with the output end of the friction wear test assembly and the output end of the electrochemical corrosion test assembly, and the data acquisition and calculation assembly is used for acquiring a friction test signal and a corrosion test signal and calculating friction parameters and corrosion parameters of the arch wire. The invention aims to enable the testing device to finish synchronous testing of frictional wear and corrosion performance of the arch wire in an artificial saliva environment.

Description

Technical Field

[0001] The invention relates to the field of oral orthodontic correction, and in particular to an orthodontic correction archwire friction corrosion testing device and a testing method. Background Art

[0002] Malocclusion is a common clinical phenomenon that can lead to unbalanced oral bite force. With the continuous development of orthodontic technology, orthodontic appliances are still the main means of orthodontic correction. Orthodontic appliances are composed of archwires and brackets. The correction force generated by the relative movement between the archwires and brackets causes the teeth to move, thereby achieving the purpose of correcting malocclusion. Given that the archwires and brackets are in the human oral environment for a long time, friction, wear and electrochemical corrosion are inevitable during orthodontic treatment. When friction, wear and electrochemical corrosion occur at the same time, the oxide film or coating on the surface of the archwire and bracket may be damaged and fall off due to mechanical wear, resulting in a sudden change in the performance of the material. The synergistic effect between friction, wear and electrochemical corrosion will accelerate the loss of materials, forming a vicious circle. Therefore, it is necessary to test the friction performance and corrosion resistance of the archwire and bracket.

[0003] The existing technology has the following deficiencies: In the current tests of the friction and wear performance and corrosion resistance of arch wire brackets, due to the relatively complicated test forms and methods, friction and wear experimental devices and electrochemical testing mechanisms are often used to simulate the human oral environment to test the friction and corrosion resistance of the arch wire. However, due to the synergistic effect between the friction and wear and corrosion of the arch wire bracket, it is difficult to simultaneously perform friction and wear and dynamic corrosion tests, thereby failing to truly simulate the friction and corrosion performance of the arch wire bracket in the human oral environment, resulting in inaccurate measurements by existing testing equipment. Summary of the invention

[0004] The main purpose of the present invention is to provide an orthodontic arch wire friction corrosion testing device and a testing method, aiming to enable the testing device to complete the synchronous testing of the friction, wear and corrosion performance of the arch wire in an artificial saliva environment.

[0005] To achieve the above-mentioned purpose, the orthodontic archwire friction corrosion testing device proposed by the present invention comprises:

[0006] An electrochemical corrosion test component, used for placing an archwire and containing artificial saliva, and immersing the archwire in the artificial saliva, the electrochemical corrosion test component is used for performing an electrochemical test on the archwire in the artificial saliva to output a corresponding corrosion test signal;

[0007] A friction and wear test assembly, arranged corresponding to the electrochemical corrosion test assembly, for fixing the bracket and performing a friction test on the bracket and the archwire to output a corresponding friction test signal;

[0008] A data acquisition and calculation component, wherein the acquisition end of the data acquisition and calculation component is respectively connected to the output end of the friction and wear test component and the output end of the electrochemical corrosion test component, and the data acquisition and calculation component is used to collect the friction test signal and the corrosion test signal, and calculate the friction parameters and corrosion parameters of the arch wire.

[0009] Optionally, the friction and wear testing assembly comprises:

[0010] A fixed pre-tightening mechanism, arranged corresponding to the electrochemical corrosion test assembly, the fixed pre-tightening mechanism is used to fix the arch wire, apply a preset pre-tightening force to the arch wire, and control the rotation angle of the arch wire and the bracket;

[0011] A friction testing mechanism is provided corresponding to the electrochemical corrosion testing assembly, and is used to apply a preset load to the arch wire and the bracket, and to fix the bracket to perform a reciprocating friction test on the arch wire, and output a corresponding friction test signal.

[0012] Optionally, the fixed pre-tightening mechanism comprises:

[0013] An archwire pressing block is arranged corresponding to the position where the electrochemical corrosion test assembly is placed on the archwire, and is used to fix the archwire;

[0014] A positioning bolt, used to fix the archwire pressing block to the electrochemical corrosion test assembly;

[0015] A preloaded three-axis displacement platform, mechanically connected to the arch wire, the preloaded three-axis displacement platform is used to apply a preset preload force to the arch wire;

[0016] The rotating platform is mechanically connected to the arch wire, and the rotating platform is used to control the rotation angle of the arch wire and the bracket.

[0017] Optionally, the friction testing mechanism comprises:

[0018] A bracket fixing fixture, used to fix the bracket so that the bracket and the archwire are arranged correspondingly;

[0019] A cantilever beam, wherein a groove is formed on the cantilever beam, and the bracket fixing fixture is fixedly installed in the groove of the cantilever beam;

[0020] A force sensor, disposed on the cantilever beam, for detecting the friction force between the bracket and the archwire, and outputting a corresponding friction test signal;

[0021] A friction triaxial displacement platform, fixedly connected to the cantilever beam, and used to apply a preset load to the archwire and the bracket;

[0022] A reciprocating motion platform, used to carry the friction three-axis displacement platform;

[0023] The first motor is connected to the reciprocating motion platform, and is used to receive a first driving signal and drive the reciprocating motion platform to perform reciprocating motion according to the first driving signal.

[0024] Optionally, the electrochemical corrosion test assembly comprises:

[0025] An electrolytic cell, wherein the electrolytic cell is provided with an archwire groove for placing an archwire, and the electrolytic cell is formed with a receiving cavity, and the electrolytic cell is also used for receiving artificial saliva;

[0026] An adjusting electrode positioning and fixing mechanism is provided corresponding to the electrolytic cell, and the adjusting electrode positioning and fixing mechanism is used to adjust the spacing and height of the electrodes in the artificial saliva to output corresponding electrode signals;

[0027] An electrochemical testing mechanism, wherein the input end of the electrochemical testing mechanism is respectively connected to the arch wire and the output end of the adjusting electrode positioning and fixing mechanism, and the electrochemical testing mechanism performs an electrochemical test on the arch wire according to the electrode signal and outputs a corresponding corrosion test signal to the data acquisition and calculation component.

[0028] Optionally, the oral orthodontic correction archwire friction corrosion testing device further comprises a platform, the electrochemical corrosion testing component and the friction wear testing component are respectively arranged on the platform, and the adjusting electrode positioning and fixing mechanism comprises:

[0029] Reference electrode;

[0030] Counter electrode;

[0031] An electrode sealing ring, used for fixing the reference electrode and the counter electrode;

[0032] A fixture, used for fixing and setting the electrode sealing ring;

[0033] The module lead screw is fixedly arranged on the platform;

[0034] A linear slider, slidably disposed on the module lead screw and connected to the fixture;

[0035] The second motor is connected to the linear slider, and is used to receive a second driving control signal and drive the linear slider to slide according to the second driving control signal, so as to drive the reference electrode and the counter electrode to move.

[0036] Optionally, the data acquisition and calculation component includes:

[0037] A bridge box, the input end of which is connected to the output end of the friction and wear test assembly, and the bridge box is used to collect the friction test signal output by the friction and wear test assembly;

[0038] A stress amplifier, the input end of which is connected to the output end of the bridge box, and the stress amplifier is used to amplify the friction test signal and then output a corresponding electrical signal;

[0039] A friction data collector, wherein the input end of the friction data collector is connected to the output end of the stress amplifier, and the friction data collector is used to receive an electrical signal corresponding to the friction force, and output a friction signal after processing;

[0040] A load data collector, the input end of which is connected to the output end of the stress amplifier, and the load data collector is used to receive an electrical signal corresponding to the load and output a load signal after processing;

[0041] A computer, wherein the input end of the computer is respectively connected to the output end of the electrochemical corrosion test assembly, the output end of the friction force data collector and the output end of the load data collector, and the computer is used to calculate the corrosion parameters of the arch wire according to the corrosion test signal, and calculate the friction parameters of the arch wire according to the friction force signal and the load signal.

[0042] Optionally, it also includes:

[0043] A temperature control component is disposed in the electrochemical corrosion test component, and is used to control the temperature of artificial saliva in the electrochemical corrosion test component.

[0044] Optionally, the temperature control component comprises:

[0045] Semiconductor wafers;

[0046] A semiconductor temperature control system connected to the semiconductor chip, the semiconductor temperature control system is used to control the semiconductor to heat or cool;

[0047] A cooling plate, the cooling plate is arranged in close contact with the semiconductor chip, one end of the cooling plate is provided with a water inlet, and the other end of the cooling plate is provided with a water outlet, and the cooling plate is used to cool the semiconductor chip during refrigeration;

[0048] A temperature sensor is arranged on the cooling plate, and the output end of the temperature sensor is connected to the input end of the semiconductor temperature control system. The temperature sensor is used to detect the temperature of the artificial saliva in the electrochemical corrosion test assembly and output a corresponding temperature detection signal to the semiconductor temperature control system.

[0049] The present invention also proposes an orthodontic archwire friction corrosion testing method implemented based on the above-mentioned orthodontic archwire friction corrosion testing device, comprising the following steps:

[0050] The archwire is fixedly placed on the electrochemical corrosion test component, and artificial saliva is poured into the electrochemical corrosion test component;

[0051] Controlling the friction and wear test component to perform friction and wear tests on brackets and archwires while controlling the electrochemical corrosion test component to perform electrochemical corrosion tests on archwires in artificial saliva;

[0052] The friction test signal output by the friction and wear test component is calculated to obtain the friction parameter of the arch wire, and the corrosion test signal output by the electrochemical corrosion test component is calculated to obtain the corrosion parameter of the arch wire.

[0053] The technical solution of the present invention constitutes an orthodontic arch wire friction corrosion test device through an electrochemical corrosion test component, a friction and wear test component and a data acquisition and calculation component, wherein the electrochemical corrosion test component is used to place the arch wire and accommodate artificial saliva, so that the arch wire is immersed in artificial saliva, thereby simulating the human oral environment; the electrochemical corrosion test component is used to perform electrochemical testing on the arch wire in artificial saliva to output the corresponding corrosion test signal to the data acquisition and calculation component; the friction and wear test component corresponds to the electrochemical corrosion test component setting, can fix the bracket and the arch wire, and perform friction testing on the bracket and the arch wire to output the corresponding friction test signal to the data acquisition and calculation component; the data acquisition and calculation component can calculate the friction parameters and corrosion parameters of the arch wire according to the friction test signal and the corrosion test signal. In this way, the orthodontic arch wire friction corrosion test device in this scheme can simulate the artificial saliva environment, and simultaneously complete the friction and wear test and corrosion performance test of the arch wire, so as to facilitate the evaluation of the proportion of friction and corrosion in the arch wire failure, and explore the synergy between friction and corrosion of the arch wire in the oral environment during orthodontic treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0055] Figure 1 It is a functional module diagram of an embodiment of an orthodontic archwire friction corrosion testing device of the present invention;

[0056] Figure 2 A schematic diagram of the product structure of an embodiment of an orthodontic archwire friction corrosion testing device of the present invention;

[0057] Figure 3It is a structural schematic diagram of an embodiment of a friction and wear testing component in a friction and corrosion testing device for an orthodontic archwire of the present invention;

[0058] Figure 4 It is a structural schematic diagram of another embodiment of the friction and wear testing assembly in the friction and corrosion testing device for orthodontic archwires of the present invention;

[0059] Figure 5 It is a structural schematic diagram of another embodiment of the friction and wear testing component in the friction and corrosion testing device for orthodontic archwires of the present invention;

[0060] Figure 6 It is a structural schematic diagram of an embodiment of a bracket fixing fixture in a friction testing mechanism of a friction and wear testing assembly in an orthodontic archwire friction corrosion testing device of the present invention;

[0061] Figure 7 It is a structural schematic diagram of an embodiment of an electrochemical corrosion test assembly in an orthodontic archwire friction corrosion test device of the present invention;

[0062] Figure 8 It is a structural schematic diagram of another embodiment of the electrochemical corrosion test assembly in the orthodontic archwire friction corrosion test device of the present invention;

[0063] Fig. 9 It is a structural schematic diagram of an embodiment of an electrolytic cell in an electrochemical corrosion test assembly in an orthodontic archwire friction corrosion test device of the present invention;

[0064] Fig.10 It is a structural schematic diagram of another embodiment of the electrochemical corrosion test assembly in the orthodontic archwire friction corrosion test device of the present invention;

[0065] Fig.11 It is a structural schematic diagram of an embodiment of a data acquisition and calculation component in an orthodontic archwire friction corrosion testing device of the present invention;

[0066] Fig.12 It is a structural schematic diagram of an embodiment of a temperature control component in an orthodontic archwire friction corrosion testing device of the present invention;

[0067] Fig.13 It is a cross-sectional view of an embodiment of a cooling plate in a temperature control assembly in an orthodontic archwire friction corrosion testing device of the present invention;

[0068] Fig.14 The present invention is a flowchart of the method steps of an embodiment of a method for testing friction corrosion of an orthodontic archwire according to the present invention.

[0069] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0072] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0073] Malocclusion is a common clinical phenomenon. It not only leads to unbalanced oral bite force and seriously affects oral health, but also has adverse effects on the patient's facial aesthetics and psychology. With the continuous development of orthodontic technology, orthodontic appliances are still the main means of orthodontic correction. Oral orthodontic appliances are composed of archwires and brackets. The correction force generated by the relative movement between the archwire and the bracket causes the teeth to move, thereby achieving the purpose of malocclusion correction. Since the archwire and bracket are in the human oral environment for a long time, friction, wear and electrochemical corrosion will inevitably occur during orthodontic treatment. When friction, wear and electrochemical corrosion occur at the same time, the oxide film or coating on the surface of the archwire and bracket may be damaged and fall off due to mechanical wear, resulting in a sudden change in the performance of the material. The synergistic effect between friction, wear and electrochemical corrosion will accelerate the loss of materials, forming a vicious circle. Therefore, it is necessary to test the friction performance and corrosion resistance of the archwire and bracket.

[0074] The existing technology has the following deficiencies: First, in the current tests of the friction and wear performance and corrosion resistance of arch wire brackets, due to the relatively complex test forms and methods, friction and wear experimental devices and electrochemical testing mechanisms are often used to simulate the human oral environment to test the friction and corrosion resistance of the arch wire. However, due to the synergistic effect between the friction, wear and corrosion of the arch wire bracket, it is difficult to simultaneously perform friction and wear and dynamic corrosion tests, thereby failing to truly simulate the friction and corrosion performance of the arch wire bracket in the human oral environment, resulting in inaccurate measurements by existing testing equipment.

[0075] Secondly, there are two major problems with the current orthodontic arch wire friction and wear testing devices: First, before clinical treatment, clinical physicians will apply a certain pre-tightening force to the arch wire when the arch wire and bracket are matched. The existing equipment is unable to accurately simulate the arch wire and bracket working conditions under different pre-tightening forces to test the friction and corrosion performance of the arch wire; Second, in clinical medicine, a certain rotation angle will inevitably be generated between the square arch wire and the bracket during orthodontic treatment. The existing equipment is unable to accurately simulate the working conditions of the square arch wire and the bracket at different rotation angles to test the friction performance of the arch wire.

[0076] Finally, there are two major problems in the current electrochemical testing devices for orthodontic archwires: First, during electrochemical testing, the distance between the working electrode, the reference electrode, and the counter electrode needs to be precisely controlled. During the experiment, it is often necessary to replace the sample multiple times for electrochemical testing. However, in the currently commonly used three-electrode system, the electrode distance is generally controlled by visual inspection, and it is difficult to ensure the stability of the electrode position during multiple tests. The electrode spacing, the depth of insertion into the solution, and the parallelism of the electrodes will greatly affect the experimental results, such as the occurrence of ohmic drop, poor electrolyte uniformity, mutual interference between electrodes, and measurement errors. Therefore, the existing equipment has problems such as the inability to accurately control the fixed position of the electrode and improve the test accuracy; second, the existing three-electrode system has no temperature control system and is often tested at room temperature. There are problems such as the inability to accurately simulate the human oral temperature to test the corrosion resistance of the archwire.

[0077] In order to solve the above problems, the present invention provides an orthodontic archwire friction corrosion testing device.

[0078] Reference Figure 1 to Figure 2 In one embodiment, an orthodontic archwire friction corrosion testing device comprises:

[0079] An electrochemical corrosion test assembly 1, used for placing an archwire and containing artificial saliva, and immersing the archwire in the artificial saliva, the electrochemical corrosion test assembly 1 is used for performing an electrochemical test on the archwire in the artificial saliva to output a corresponding corrosion test signal;

[0080] The friction and wear test component 2 is arranged corresponding to the electrochemical corrosion test component 1, and is used to fix the bracket and perform a friction test on the bracket and the archwire to output a corresponding friction test signal;

[0081] A data acquisition and calculation component 3, wherein the acquisition end of the data acquisition and calculation component 3 is respectively connected to the output end of the friction and wear test component 2 and the output end of the electrochemical corrosion test component 1, and the data acquisition and calculation component 3 is used to collect the friction test signal and the corrosion test signal, and calculate the friction parameters and corrosion parameters of the arch wire.

[0082] In this embodiment, the electrochemical corrosion test assembly 1 can be composed of an electrochemical test mechanism 13 and a tank body for accommodating artificial saliva, and the arch wire can be placed on the tank body for accommodating artificial saliva, so that the arch wire is immersed in the artificial saliva, thereby simulating the situation of the arch wire in the human oral environment to improve the accuracy of the test results. The electrochemical test mechanism 13 is used to perform dynamic polarization curve testing and electrochemical impedance testing. After the three electrodes in the artificial saliva are connected to the electrochemical test mechanism 13 through wires, the electrochemical test mechanism 13 is turned on, and the arch wire is used as the working electrode therein, and the corrosion test of the arch wire can be performed; the working principle of the electrochemical test workstation is not described in detail here.

[0083] The bracket can be fixedly set on the friction and wear test component 2, so that the friction and wear test component 2 can correspond to the position setting of the electrochemical corrosion test component 1, so as to match the position of the bracket and the archwire, simulating the fit of the bracket and the archwire in the orthodontic appliance; and the archwire may be loose when placed on the electrochemical corrosion test component 1, and the archwire can be fixed by the friction and wear test component 2 to avoid the loose archwire from affecting the test results. The friction and wear test component 2 can also include a moving part. After the position of the bracket and the archwire are matched, the moving part drives the archwire and the bracket to rub back and forth to complete the friction test; and the friction force can be detected by a sensor and then output.

[0084] The data acquisition and calculation component 3 can be composed of a data acquisition part and a data processing part. The data acquisition part can collect the electrical signal output by the electrochemical corrosion test component 1, that is, the corrosion test signal, and collect the electrical signal output by the friction and wear test component 2, that is, the friction test signal; and then the corrosion test signal and the friction test signal are processed and calculated by the data processing part to obtain corresponding corrosion parameters and friction parameters, which represent the corrosion and wear conditions of the arch wire; the data processing part can be composed of a computer 35.

[0085] It can be understood that in this scheme, the arch wire is immersed in artificial saliva, and the friction and wear test of the arch wire and the bracket is performed through the friction and wear test component 2, and the chemical corrosion test of the arch wire is performed through the electrochemical corrosion test component 1; the reciprocating friction and wear and dynamic electrochemical corrosion tests can be performed simultaneously under the condition of truly simulating the oral environment of the human body in vitro, thereby facilitating the evaluation of the proportion of friction and corrosion in arch wire failure, and exploring the synergistic effect between friction and corrosion of the arch wire in the oral environment during orthodontic treatment, which can provide a favorable basis for the research and development of arch wire and bracket materials, oral orthodontic clinical medicine and other related research.

[0086] The technical solution of the present invention is to form an orthodontic arch wire friction corrosion test device through an electrochemical corrosion test component 1, a friction and wear test component 2 and a data acquisition and calculation component 3, wherein the electrochemical corrosion test component 1 can place the arch wire and contain artificial saliva, so that the arch wire is immersed in the artificial saliva, thereby simulating the human oral environment; the electrochemical corrosion test component 1 can perform an electrochemical test on the arch wire in the artificial saliva to output the corresponding corrosion test signal to the data acquisition and calculation component 3; the friction and wear test component 2 is set corresponding to the electrochemical corrosion test component 1, can fix the bracket and the arch wire, and perform a friction test on the bracket and the arch wire to output the corresponding friction test signal to the data acquisition and calculation component 3; the data acquisition and calculation component 3 can calculate the friction parameters and corrosion parameters of the arch wire according to the friction test signal and the corrosion test signal. In this way, the orthodontic arch wire friction corrosion test device in this scheme can simulate the artificial saliva environment, and simultaneously complete the friction and wear test and corrosion performance test of the arch wire, so as to facilitate the evaluation of the proportion of friction and corrosion in the arch wire failure, and explore the synergy between friction and corrosion of the arch wire in the oral environment during orthodontic treatment.

[0087] Reference Figure 2 In one embodiment, the friction and wear testing assembly 2 comprises:

[0088] A fixed pre-tightening mechanism 21, which is arranged corresponding to the electrochemical corrosion test assembly 1, and is used to fix the arch wire, apply a preset pre-tightening force to the arch wire, and control the rotation angle of the arch wire and the bracket;

[0089] The friction testing mechanism 22 is provided corresponding to the electrochemical corrosion testing assembly 1, and is used to apply a preset load to the arch wire and the bracket, and to fix the bracket to perform a reciprocating friction test on the arch wire, and output a corresponding friction test signal.

[0090] In this embodiment, the friction and wear test assembly 2 is arranged corresponding to the electrochemical corrosion test assembly 1, so the arch wire can be fixed on the slot body of the electrochemical corrosion test assembly 1 by the fixed pre-tightening mechanism 21 in the friction and wear test assembly 2, so as to avoid the loosening of the arch wire affecting the test results. Specifically, it can be fixed by bolts and other components. It can be understood that in this embodiment, the preset pre-tightening force is applied to the arch wire by the fixed pre-tightening mechanism 21 and the arch wire is controlled, which can simulate the pre-tightening force applied to the arch wire by the clinician when the arch wire and the bracket are matched, and the rotation angle between the square arch wire and the bracket during orthodontic treatment in clinical medicine, thereby improving the accuracy of the friction and wear test. The friction test mechanism 22 applies a preset load to the arch wire and the bracket, which can simulate the friction corrosion performance of the arch wire under different loads during orthodontic treatment; and the friction test mechanism 22 can realize the low-speed reciprocating friction motion of the bracket relative to the arch wire through the drive of the motor, and different movement speeds, movement distances and movement cycles can be set according to the test requirements, simulating different reciprocating motion cycles, and testing the friction corrosion performance of the arch wire under different reciprocating motion cycles.

[0091] Reference Figure 3 to Figure 4 In one embodiment, the fixed pre-tightening mechanism 21 comprises:

[0092] The archwire pressing block 211 is arranged corresponding to the position where the electrochemical corrosion testing assembly 1 is placed on the archwire, and is used to fix the archwire;

[0093] A positioning bolt 212, used to fix the archwire pressing block 211 on the electrochemical corrosion testing assembly 1;

[0094] A pre-tightening triaxial displacement platform 213 is mechanically connected to the archwire, and the pre-tightening triaxial displacement platform 213 is used to apply a preset pre-tightening force to the archwire;

[0095] The rotating platform 214 is mechanically connected to the archwire, and is used to control the rotation angle of the archwire and the bracket.

[0096] In this embodiment, since the arch wire is placed on the slot body of the electrochemical corrosion test assembly 1, the arch wire can be pressed and fixed by the arch wire pressing block 211, and the arch wire pressing block 211 is fixed to the slot body by bolts; it can be understood that the number of the arch wire pressing block 211 and the positioning bolt 212 can be set to multiple to enhance the fixing effect, such as Figure 4In the present invention, three archwire pressing blocks 211 and three positioning bolts 212 are respectively provided, one is provided at the connection between the rotating platform 214 and the archwire, and two are provided on the slot body of the electrochemical corrosion test assembly 1. The preloaded three-axis displacement platform 213 may include a preloaded X-axis micrometer 2131, a preloaded Y-axis micrometer 2132, and a preloaded Z-axis micrometer 2133. By using the calibrated preloaded three-axis displacement platform 213, the preloaded Y-axis micrometer 2132 is rotated, and a certain preload force is applied to the archwire according to the test requirements, which can simulate the working condition that the clinician applies different preload forces to the archwire before orthodontic treatment, and test the friction corrosion performance of the archwire under different preload forces. The rotating platform 214 can be composed of a locking screw 2141, a coarse and fine adjustment switching screw 2142, a differential head 2143, a rotating base 2144 and a rotating disk 2145; by rotating the differential head 2143 of the fine-tuning rotating platform 214, a certain rotation angle is formed between the arch wire and the bracket according to the test requirements, and the locking screw 2141 is twisted to fix the rotation angle, thereby simulating the working conditions of different rotation angles of the arch wire and the bracket during orthodontic treatment, and testing the friction and corrosion performance of the arch wire at different rotation angles.

[0097] Reference Figure 5 to Figure 6 In one embodiment, the friction testing mechanism 22 includes:

[0098] A bracket fixing fixture 221, used to fix the bracket so that the bracket is arranged correspondingly to the archwire;

[0099] A cantilever beam 222, wherein a groove is formed on the cantilever beam 222, and the bracket fixing fixture 221 is fixedly installed in the groove of the cantilever beam 222;

[0100] A force sensor 223, disposed on the cantilever beam 222, for detecting the friction force between the bracket and the archwire, and outputting a corresponding friction test signal;

[0101] A friction triaxial displacement platform 224 is fixedly connected to the cantilever beam 222, and the friction triaxial displacement platform 224 is used to apply a preset load to the archwire and the bracket;

[0102] A reciprocating motion platform 225, used for carrying the friction three-axis displacement platform 224;

[0103] The first motor 226 is connected to the reciprocating motion platform 225 . The first motor 226 is used to receive a first driving signal and drive the reciprocating motion platform 225 to perform reciprocating motion according to the first driving signal.

[0104] In this embodiment, after the archwire is fixed and pre-tightened, the bracket can be clamped and fixed by the bracket fixing fixture 221; the bracket fixing fixture 221 can be composed of a placement table 2211, a cushion block 2212, a fixing bolt 2213 and a pin 2214. First, the placement table 2211, the cushion block 2212 and the bracket are installed in the groove on the cantilever beam 222 in sequence, and then the placement table 2211 and the cushion block 2212 are fixed by the fixing bolt 2213 and the pin 2214 respectively. The cushion block 2212 and the bracket can be solidified and fixed with 1 to 2 drops of glue before clamping and fixing to complete the fixation of the bracket.

[0105] Furthermore, the archwire and the bracket are matched with each other and a load is applied. Specifically, the friction X-axis micrometer 2241 and the friction Y-axis micrometer 2242 of the friction three-axis displacement platform 224 are rotated to make the archwire and the bracket match each other, and then the friction Z-axis micrometer 2243 is rotated, and the cantilever beam 222 is slowly lowered, so that the bracket is slowly lowered and pushes the archwire, so that a certain load is generated between the archwire and the bracket. Different loads can be applied according to the test requirements to test the friction corrosion performance of the archwire under different loads during orthodontic treatment.

[0106] After that, the friction testing mechanism 22 is started to make the arch wire and bracket reciprocate and rub against each other. Specifically, after the arch wire and the bracket are fixed and pre-tightened, specific parameters are set by using the computer 35 and the controller of the first motor 226. The first motor 226 drives the reciprocating motion platform 225 to move, and then drives the friction three-axis displacement platform 224 to move along the axis of the arch wire length, so as to realize the low-speed reciprocating friction motion of the bracket relative to the arch wire. At the same time, different movement speeds, movement distances and movement cycles can be set according to the test requirements to simulate different reciprocating motion cycles and test the friction corrosion performance of the arch wire under different reciprocating motion cycles.

[0107] It is understandable that the first motor 226 can drive the reciprocating motion platform 225 to move through the coupling 228 to achieve the reciprocating friction test between the archwire and the bracket, and cause the cantilever beam 222 to deform. The force sensor 223 set on the cantilever beam 222 can record the generated electrical signals representing the load and friction in real time. For example, two force sensors 223 are set, one is set on the upper and lower surfaces of the cantilever beam 222 to record the load signal, and the other is set on the left and right surfaces of the cantilever beam 222 to record the friction signal; the force sensor 223 may include a strain gauge, and the strain gauge senses the deformation of the cantilever beam 222 to generate a corresponding electrical signal, and then outputs the electrical signal to the data acquisition and calculation component 3. In addition, the first drive signal received by the first motor 226 can be issued by the motor controller 227, and the motor controller 227 can be connected to the computer 35 in the data acquisition and calculation component 3, and the computer 35 sends a control signal so that the motor controller 227 outputs the corresponding first drive signal to the first motor 226.

[0108] Reference Figures 7 to 9 In one embodiment, the electrochemical corrosion test assembly 1 comprises:

[0109] An electrolytic cell 11, wherein an archwire groove is provided on the electrolytic cell 11, wherein the archwire groove is used to place the archwire, and wherein a receiving cavity is formed on the electrolytic cell 11, and wherein the electrolytic cell 11 is also used to receive artificial saliva;

[0110] An adjusting electrode positioning and fixing mechanism 12 is provided corresponding to the electrolytic cell 11, and the adjusting electrode positioning and fixing mechanism 12 is used to adjust the spacing and height of the electrodes in the artificial saliva to output corresponding electrode signals;

[0111] An electrochemical testing mechanism 13, wherein the input end of the electrochemical testing mechanism 13 is respectively connected to the arch wire and the output end of the adjusting electrode positioning and fixing mechanism 12, and the electrochemical testing mechanism 13 performs an electrochemical test on the arch wire according to the electrode signal, and outputs a corresponding corrosion test signal to the data acquisition and calculation component 3.

[0112] In this embodiment, in order to ensure the accuracy of the electrochemical test, the electrolytic cell 11 can be made of insulating and acid-resistant materials, and its main function is to accommodate artificial saliva and isolate and protect. The grooves on the electrolytic cell 11 can be set according to the shape of the archwire. It can be understood that in the electrochemical test, the electrode spacing and height will seriously affect the test results, and seriously lead to problems such as ohmic drop, poor electrolyte uniformity, mutual interference between electrodes and measurement errors. Therefore, in this embodiment, the electrode positioning and fixing mechanism 12 is used to control the spacing and height of the adjustment electrodes, effectively improve the accuracy of the test, and the modular design facilitates the removal and installation of the electrodes. The electrochemical test mechanism 13 can be an electrochemical workstation, which specifically evaluates the corrosion behavior of the material through an electrochemical method, including the corrosion rate, corrosion type and corrosion resistance of the material, mainly dynamic polarization curve test and electrochemical impedance test. After the three electrodes are connected to the electrochemical test mechanism 13 through wires, the electrochemical test mechanism 13 is turned on. The specific working principle of the electrochemical test mechanism 13 is not described in detail here.

[0113] Reference Figure 2 and Fig.10 In one embodiment, the orthodontic archwire friction corrosion testing device further comprises a platform 5, the electrochemical corrosion testing component 1 and the friction wear testing component 2 are respectively arranged on the platform 5, and the adjusting electrode positioning fixing mechanism 12 comprises:

[0114] Reference electrode 121;

[0115] Counter electrode 122;

[0116] An electrode sealing ring 123, used for fixing the reference electrode 121 and the counter electrode 122;

[0117] A fixture 124, used for fixing the electrode sealing ring 123;

[0118] The module lead screw 125 is fixedly arranged on the platform 5;

[0119] A linear slider 126 is slidably disposed on the module lead screw 125 and connected to the fixture 124;

[0120] The second motor 127 is connected to the linear slider 126 . The second motor 127 is used to receive a second driving control signal and drive the linear slider 126 to slide according to the second driving control signal, so as to drive the reference electrode 121 and the counter electrode 122 to move.

[0121] In this embodiment, the orthodontic archwire friction corrosion test device may include a horizontally arranged platform 5 for placing the electrochemical corrosion test component 1 and the friction wear test component 2, and the module lead screw 125 in the adjusting electrode positioning and fixing mechanism 12 may be fixedly arranged on the platform 5. The reference electrode 121, the counter electrode 122 and the working electrode are three electrodes required for the electrochemical workstation to perform the test. The working electrode in this embodiment is the archwire. After the three electrodes are connected to the electrochemical test mechanism 13 through wires, the electrochemical test mechanism 13 is turned on, and a save folder and setting path for the test are established on the computer 35, and the experimental parameters are set, and then the test can be started. The reference electrode 121 can be a silver chloride electrode, and the counter electrode 122 can be high-purity platinum. The reference electrode 121 and the counter electrode 122 are fixedly arranged by an electrode sealing ring 123, and the electrode sealing ring 123 is fixedly arranged on a clamp 124, and the clamp 124 is then fixedly connected to the linear slider 126; and the module screw 125 includes an X-axis module screw 1251, a Y-axis module screw 1252 and a Z-axis module screw 1253; the linear slider 126 includes an X-axis linear slider 1261, a Y-axis linear slider 1262 and a Z-axis linear slider 1263. Specifically, the fixture 124 is connected to the Z-axis linear slider 1263 and moves on the Z-axis module lead screw 1253; the Z-axis module lead screw 1253 is connected to the Y-axis linear slider 1262 and moves on the Y-axis module lead screw 1252; the Y-axis module lead screw 1252 is connected to the X-axis linear sliders 1261 at both ends and moves on the X-axis module lead screws 1251 at both ends. The computer 35 in the data acquisition and calculation component 3 controls the second motor 127 to drive the slider to move, thereby driving the reference electrode 121 and the counter electrode 122 to move, and adjusting the spacing and height between the reference electrode 121 and the counter electrode 122 and the arch wire, which can effectively improve the accuracy of the electrochemical test.

[0122] Reference Fig.11In one embodiment, the data acquisition and calculation component 3 includes:

[0123] A bridge box 31, the input end of the bridge box 31 is connected to the output end of the friction and wear test assembly 2, and the bridge box 31 is used to collect the friction test signal output by the friction and wear test assembly 2;

[0124] A stress amplifier 32, the input end of the stress amplifier 32 is connected to the output end of the bridge box 31, and the stress amplifier 32 is used to amplify the friction test signal and then output a corresponding electrical signal;

[0125] A friction data collector 33, the input end of the friction data collector 33 is connected to the output end of the stress amplifier 32, and the friction data collector 33 is used to receive an electrical signal corresponding to the friction force, and output a friction signal after processing;

[0126] A load data collector 34, the input end of which is connected to the output end of the stress amplifier 32, and the load data collector 34 is used to receive an electrical signal corresponding to the load, and output a load signal after processing;

[0127] A computer 35, wherein the input end of the computer 35 is respectively connected to the output end of the electrochemical corrosion test assembly 1, the output end of the friction data collector 33 and the output end of the load data collector 34, and the computer 35 is used to calculate the corrosion parameters of the arch wire according to the corrosion test signal, and calculate the friction parameters of the arch wire according to the friction signal and the load signal.

[0128] In this embodiment, when performing a reciprocating friction and wear test, the force sensor 223 on the cantilever beam 222 will generate a load and friction force electrical signal that changes in real time, that is, a friction test signal, which is uniformly collected by the bridge box 31, further amplified by the stress amplifier 32, and then transmitted to the friction force data collector 33 and the load data collector 34 respectively, and finally uniformly collected by the computer 35. After software data processing and analysis, the corresponding load, friction force and friction coefficient between the arch wire and the bracket that change in real time are obtained; in this way, the friction and wear of the arch wire can be obtained, and the computer 35 can also calculate the corrosion parameters of the arch wire according to the corrosion test signal, so as to facilitate the evaluation of the proportion of friction and corrosion in the failure of the arch wire. Among them, further amplifying the electrical signal by the stress amplifier 32 can facilitate the friction force data collector 33 and the load data collector 34 to collect the electrical signal, and ensure the accuracy of the calculation results. Collecting signals separately by the friction force data collector 33 and the load data collector 34 can prevent signal crosstalk.

[0129] Reference Figure 8In one embodiment, the orthodontic archwire friction corrosion testing device further comprises:

[0130] A temperature control component 4 is disposed in the electrochemical corrosion test component 1 , and is used to control the temperature of the artificial saliva in the electrochemical corrosion test component 1 .

[0131] In this embodiment, the temperature control component 4 can be used to change the temperature of the artificial saliva in the electrochemical corrosion test component 1, so as to accurately simulate the oral environment at different temperatures, solving the limitation problem that the traditional electrochemical test system can only test in room temperature environment.

[0132] The temperature control component 4 can be arranged in the electrolytic cell 11. Figure 8 In an exemplary technology, the electrolytic cell 11 also includes a sealing plate 14 and a sealing ring 15. The rear end face of the electrolytic cell 11 has an open stepped opening for installing a temperature control component 4. After the temperature control component 4 is installed, the sealing plate 14 and the sealing ring 15 can be used to fix the connection to ensure the sealing of the electrolytic cell 11.

[0133] Further, refer to Fig.12 and Fig.13 In one embodiment, the temperature control component 4 includes:

[0134] Semiconductor chip 41;

[0135] A semiconductor temperature control system 42, connected to the semiconductor chip 41, and used to control the semiconductor to heat or cool;

[0136] A cooling plate 43, wherein the cooling plate 43 is arranged in close contact with the semiconductor chip 41, a water inlet 431 is arranged at one end of the cooling plate 43, and a water outlet 433 is arranged at the other end of the cooling plate 43, and the cooling plate 43 is used to cool the semiconductor chip 41 during refrigeration;

[0137] The temperature sensor 44 is arranged on the cooling plate 43. The output end of the temperature sensor 44 is connected to the input end of the semiconductor temperature control system 42. The temperature sensor 44 is used to detect the temperature of the artificial saliva in the electrochemical corrosion test assembly 1 and output a corresponding temperature detection signal to the semiconductor temperature control system 42.

[0138] In this embodiment, due to the requirements of electrochemical testing, the material must be insulating, so the material of the semiconductor chip 41 can be DPC ceramic or other insulating materials, and the material of the temperature sensor 44 probe can be PT100 or other insulating materials, so that the semiconductor chip 41 and the temperature sensor 44 probe can have good insulation and thermal conductivity, and will not affect the test results. Before the electrochemical test, the semiconductor chip 41 is heated or cooled to the artificial saliva, mainly by the semiconductor refrigeration and heating temperature control system by changing the direction of the current to achieve cooling or heating on the same side of the semiconductor chip 41. When the direction of the current changes, the original cooling side will become the heating end, and the original heating side will become the cooling end, thereby achieving heating or cooling of the artificial saliva. The main function of the temperature sensor 44 is to detect the temperature of the artificial saliva and output the temperature data to the semiconductor temperature control system for display. The cooling plate 43 is arranged in contact with one side of the semiconductor chip 41. By providing a water inlet 431 and a water outlet 433, when the other side of the semiconductor chip 41 is cooled, the liquid flowing in the cooling plate 43 can dissipate heat and cool down the side in contact with the semiconductor chip 41. It should be noted that the components of the orthodontic archwire friction corrosion testing device of the present solution in the above-mentioned embodiment are all modularly designed to facilitate the disassembly and installation of the components.

[0139] The present invention also provides an orthodontic arch wire friction corrosion testing method implemented based on the above-mentioned orthodontic arch wire friction corrosion testing device.

[0140] Reference Fig.14 In one embodiment, a method for testing friction corrosion of an orthodontic archwire comprises the following steps:

[0141] S100, fixing an archwire on the electrochemical corrosion test assembly 1, and pouring artificial saliva into the electrochemical corrosion test assembly 1;

[0142] S200, controlling the friction and wear test component 2 to perform a friction and wear test on the bracket and the archwire, and controlling the electrochemical corrosion test component 1 to perform an electrochemical corrosion test on the archwire in artificial saliva;

[0143] S300, calculating the friction test signal output by the friction and wear test component 2 to obtain the friction parameter of the arch wire, and calculating the corrosion test signal output by the electrochemical corrosion test component 1 to obtain the corrosion parameter of the arch wire.

[0144] In this embodiment, step S100 is to fix the arch wire on the electrochemical corrosion test component 1, and pour artificial saliva into the electrochemical corrosion test component 1 to simulate the condition of the arch wire in the human oral environment to improve the accuracy of the test results. Step S200 is to perform friction and wear tests and electrochemical tests on the brackets and arch wires at the same time, thereby simulating the wear test and corrosion test of the arch wire and brackets in the human oral environment. Step S300 is to calculate the friction parameters of the arch wire according to the friction test signal, and calculate the corrosion parameters of the arch wire according to the corrosion test signal, so as to evaluate the proportion of friction and corrosion in the arch wire failure, and explore the synergy between friction and corrosion of the arch wire in the oral environment during orthodontic treatment.

[0145] In order to better illustrate the inventive concept of this scheme, Figures 1 to 14 , the process of the orthodontic arch wire friction corrosion testing device and the orthodontic arch wire friction corrosion testing method of the present invention is described.

[0146] For the friction and wear test assembly 2, first, the arch wire is installed and placed in the arch wire groove on the upper end surface of the electrolytic cell 11, and the arch wire is clamped and fixed; then different rotation angles between the arch wire and the bracket are simulated, specifically the differential head of the rotating platform 214 is used to form a certain rotation angle between the arch wire and the bracket according to the test requirements, and the locking screw is twisted to fix the rotation angle; then the calibrated preloaded three-axis displacement platform 213 is used to rotate the preloaded Y-axis micrometer 2132 to apply a certain preload force to the arch wire according to the test requirements.

[0147] Secondly, the bracket is clamped and fixed. Specifically, the placement table, cushion block and bracket are installed in the groove at the top of the cantilever beam 222 in sequence, and then the placement table and the cushion block are fixed with fixing bolts and pins respectively. Before clamping and fixing, 1 to 2 drops of glue are used to solidify and fix the cushion block and the bracket to complete the bracket fixation.

[0148] Then, the archwire and the bracket are matched with each other, and a load is applied. Specifically, the friction X-axis micrometer 2241 and the friction Y-axis micrometer 2242 of the friction three-axis displacement platform 224 are rotated to make the archwire and the bracket match each other, and then the friction Z-axis micrometer 2243 is rotated, and the cantilever beam 222 is slowly lowered, so that the bracket is slowly lowered and pushes the archwire, so that a certain load is generated between the archwire and the bracket.

[0149] Finally, the friction test mechanism 22 is started to cause reciprocating friction between the archwire and the bracket. Specifically, the computer 35 and the first motor 226 controller set specific parameters, and the first motor 226 drives the reciprocating motion platform 225 to move, and then drives the friction three-axis displacement platform 224 to move along the axis of the archwire length, so as to realize the low-speed reciprocating friction motion of the bracket relative to the archwire.

[0150] For the electrochemical corrosion test component 1, artificial saliva is first prepared. Specifically, after the archwire bracket is installed, fixed and pre-tightened, a proper amount of artificial saliva is poured into the electrolytic cell.

[0151] The second step is to set the experimental temperature. Specifically, the semiconductor cooling and heating temperature control system is turned on, and the experimental temperature is set according to the test requirements to simulate the temperature of the human mouth.

[0152] Finally, the electrochemical test parameters are set. Specifically, according to the three-electrode system, the electrochemical test mechanism 13 is connected to the archwire, the reference electrode 121 and the counter electrode 122 respectively to perform a dynamic polarization curve test or an electrochemical impedance test. The specific electrochemical test parameters are set, and the open circuit potential test time is 900s to ensure the stability of the electrochemical system. After the open circuit potential test is completed, the reciprocating friction and wear test is started to ensure that the friction and wear test and the electrochemical test are carried out simultaneously, simulating the simultaneous testing of the friction and wear of the archwire bracket and the dynamic corrosion performance in the artificial saliva environment.

[0153] After the synchronous test is completed, the reciprocating friction and wear test data and the electrochemical test data are stored separately, the archwire and bracket are removed, and they are ultrasonically cleaned for 5 minutes, blown dry and stored.

[0154] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An orthodontic archwire friction corrosion testing device, characterized in that: include: An electrochemical corrosion test component, used for placing an archwire and containing artificial saliva, and immersing the archwire in the artificial saliva, the electrochemical corrosion test component is used for performing an electrochemical test on the archwire in the artificial saliva to output a corresponding corrosion test signal; A friction and wear test assembly, arranged corresponding to the electrochemical corrosion test assembly, for fixing the bracket and performing a friction test on the bracket and the archwire to output a corresponding friction test signal; A data acquisition and calculation component, wherein the acquisition end of the data acquisition and calculation component is respectively connected to the output end of the friction and wear test component and the output end of the electrochemical corrosion test component, and the data acquisition and calculation component is used to collect the friction test signal and the corrosion test signal, and calculate the friction parameters and corrosion parameters of the arch wire.

2. The orthodontic archwire friction corrosion testing device according to claim 1, characterized in that: The friction and wear testing assembly comprises: A fixed pre-tightening mechanism, arranged corresponding to the electrochemical corrosion test assembly, for fixing the arch wire, applying a preset pre-tightening force to the arch wire, and controlling the rotation angle of the arch wire and the bracket; A friction testing mechanism is provided corresponding to the electrochemical corrosion testing assembly, and is used to apply a preset load to the arch wire and the bracket, and to fix the bracket to perform a reciprocating friction test on the arch wire, and output a corresponding friction test signal.

3. The orthodontic archwire friction corrosion testing device according to claim 2, characterized in that: The fixed pre-tightening mechanism comprises: An archwire pressing block is arranged corresponding to the position where the electrochemical corrosion test assembly is placed on the archwire, and is used to fix the archwire; A positioning bolt, used to fix the archwire pressing block to the electrochemical corrosion test assembly; A preloaded three-axis displacement platform, mechanically connected to the arch wire, the preloaded three-axis displacement platform is used to apply a preset preload force to the arch wire; The rotating platform is mechanically connected to the arch wire, and the rotating platform is used to control the rotation angle of the arch wire and the bracket.

4. The orthodontic archwire friction corrosion testing device according to claim 2, characterized in that: The friction testing mechanism comprises: A bracket fixing fixture, used to fix the bracket so that the bracket and the archwire are arranged correspondingly; A cantilever beam, wherein a groove is formed on the cantilever beam, and the bracket fixing fixture is fixedly installed in the groove of the cantilever beam; A force sensor, disposed on the cantilever beam, for detecting the friction force between the bracket and the archwire, and outputting a corresponding friction test signal; A friction triaxial displacement platform, fixedly connected to the cantilever beam, and used to apply a preset load to the archwire and the bracket; A reciprocating motion platform, used for carrying the friction three-axis displacement platform; The first motor is connected to the reciprocating motion platform, and is used to receive a first driving signal and drive the reciprocating motion platform to perform reciprocating motion according to the first driving signal.

5. The orthodontic archwire friction corrosion testing device according to claim 1, characterized in that: The electrochemical corrosion test assembly comprises: An electrolytic cell, wherein the electrolytic cell is provided with an archwire groove for placing an archwire, and the electrolytic cell is formed with a receiving cavity, and the electrolytic cell is also used for receiving artificial saliva; An adjusting electrode positioning and fixing mechanism is provided corresponding to the electrolytic cell, and the adjusting electrode positioning and fixing mechanism is used to adjust the spacing and height of the electrodes in the artificial saliva to output corresponding electrode signals; An electrochemical testing mechanism, wherein the input end of the electrochemical testing mechanism is respectively connected to the arch wire and the output end of the adjusting electrode positioning and fixing mechanism, and the electrochemical testing mechanism performs an electrochemical test on the arch wire according to the electrode signal and outputs a corresponding corrosion test signal to the data acquisition and calculation component.

6. The orthodontic archwire friction corrosion testing device according to claim 5, characterized in that: The orthodontic archwire friction corrosion testing device further comprises a platform, the electrochemical corrosion testing assembly and the friction wear testing assembly are respectively arranged on the platform, and the adjusting electrode positioning and fixing mechanism comprises: Reference electrode; Counter electrode; An electrode sealing ring, used for fixing the reference electrode and the counter electrode; A fixture, used for fixing and setting the electrode sealing ring; The module lead screw is fixedly arranged on the platform; A linear slider, slidably disposed on the module lead screw and connected to the fixture; The second motor is connected to the linear slider, and is used to receive a second driving control signal and drive the linear slider to slide according to the second driving control signal, so as to drive the reference electrode and the counter electrode to move.

7. The orthodontic archwire friction corrosion testing device according to claim 1, characterized in that: The data acquisition and calculation components include: A bridge box, the input end of which is connected to the output end of the friction and wear test assembly, and the bridge box is used to collect the friction test signal output by the friction and wear test assembly; A stress amplifier, the input end of which is connected to the output end of the bridge box, and the stress amplifier is used to amplify the friction test signal and then output a corresponding electrical signal; A friction data collector, wherein the input end of the friction data collector is connected to the output end of the stress amplifier, and the friction data collector is used to receive an electrical signal corresponding to the friction force, and output a friction signal after processing; A load data collector, the input end of which is connected to the output end of the stress amplifier, and the load data collector is used to receive an electrical signal corresponding to the load and output a load signal after processing; A computer, wherein the input end of the computer is respectively connected to the output end of the electrochemical corrosion test assembly, the output end of the friction force data collector and the output end of the load data collector, and the computer is used to calculate the corrosion parameters of the arch wire according to the corrosion test signal, and calculate the friction parameters of the arch wire according to the friction force signal and the load signal.

8. The orthodontic archwire friction corrosion testing device according to claim 1, characterized in that: Also includes: A temperature control component is disposed in the electrochemical corrosion test component, and is used to control the temperature of artificial saliva in the electrochemical corrosion test component.

9. The orthodontic archwire friction corrosion testing device according to claim 8, characterized in that: The temperature control assembly comprises: Semiconductor wafers; A semiconductor temperature control system connected to the semiconductor chip, the semiconductor temperature control system is used to control the semiconductor to heat or cool; A cooling plate, the cooling plate is arranged in close contact with the semiconductor chip, one end of the cooling plate is provided with a water inlet, and the other end of the cooling plate is provided with a water outlet, and the cooling plate is used to cool the semiconductor chip during refrigeration; A temperature sensor is arranged on the cooling plate, and the output end of the temperature sensor is connected to the input end of the semiconductor temperature control system. The temperature sensor is used to detect the temperature of the artificial saliva in the electrochemical corrosion test assembly and output a corresponding temperature detection signal to the semiconductor temperature control system.

10. An orthodontic archwire friction corrosion testing method implemented based on the orthodontic archwire friction corrosion testing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: The archwire is fixedly placed on the electrochemical corrosion test component, and artificial saliva is poured into the electrochemical corrosion test component; Controlling the friction and wear test component to perform friction and wear tests on brackets and archwires while controlling the electrochemical corrosion test component to perform electrochemical corrosion tests on archwires in artificial saliva; The friction test signal output by the friction and wear test component is calculated to obtain the friction parameter of the arch wire, and the corrosion test signal output by the electrochemical corrosion test component is calculated to obtain the corrosion parameter of the arch wire.

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