A toothpaste toothbrush tester
By designing a toothpaste and toothbrush tester, which uses components such as servo motors and air pumps to simulate brushing motions, the problem of existing equipment being unable to standardize the testing of toothpaste effectiveness has been solved, achieving efficient and accurate performance evaluation of toothpaste and toothbrushes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU YIHUA TRADING CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-24
AI Technical Summary
Existing toothpaste testing equipment cannot effectively simulate dynamic parameters such as brushing force, frequency, and angle, resulting in inconsistent test results and high equipment costs with low levels of intelligence.
A toothpaste and toothbrush tester was designed, comprising a tooth fixing module, a toothbrush fixing module, and a toothpaste module. It uses components such as a servo motor, an air pump, and a motor to simulate real brushing actions, realize automatic adjustment and recording of dynamic parameters, and combine pressure sensors and a display screen for real-time monitoring and data display.
It enables comprehensive simulation and standardized testing of toothpaste and toothbrush performance, improving testing efficiency and result accuracy, reducing human error, and lowering equipment costs.
Smart Images

Figure CN224553246U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of toothpaste efficacy testing instruments, specifically relating to a toothpaste and toothbrush tester. Background Technology
[0002] Currently, domestic toothpaste efficacy testing equipment includes devices for anti-caries and whitening effects. These devices typically include in vitro enamel remineralization models and colorimeters (simulating tooth cleanliness assessment after staining). Existing testing technologies and equipment suffer from long testing cycles, high equipment costs, cumbersome sample pretreatment, insufficient intelligence and automation, weak data integration capabilities, limited efficacy evaluation methods, and significant differences between in vitro models and the real oral environment. Current anti-caries and whitening tests largely rely on in vitro simulations (such as hydroxyapatite tablets), which cannot fully reflect actual brushing effects. Utility Model Content
[0003] The purpose of this invention is to provide a toothpaste and toothbrush tester to solve the problems in the prior art where dynamic parameters such as brushing force, frequency, and angle are difficult to standardize, affecting the consistency of test results and the low accuracy of portable devices.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a toothpaste and toothbrush tester, including a shell, a base plate at the bottom of the shell, a drive module and a support frame mounted on the base plate, a tooth fixing module mounted on the top of the drive module, and a plurality of toothbrush fixing modules and toothpaste modules mounted on the support frame. The dental fixing module includes: an installation groove, in which several U-shaped blocks are installed, a slider is installed in each U-shaped block, a threaded rod is fixedly connected to one side of each slider, a threaded hole matching the threaded rod is provided on one side of each U-shaped block, the threaded rod passes through the threaded hole, and a knob is provided at the end of the threaded rod away from the slider. The toothbrush fixing module includes: a U-shaped block 2, a movable plate fixedly connected to the top of the U-shaped block 2, a connecting rod hinged to one end of the movable plate, a mounting plate fixedly connected to the other end of the connecting rod, a pressure sensor installed at the bottom of the mounting plate away from the connecting rod, a connecting plate fixedly connected to the top of the mounting plate, a slider 2 fixedly connected to the middle of one side of the connecting plate, the slider 2 slidably installed inside the U-shaped block 3, a threaded rod 2 fixedly connected to one side of the slider 2, a threaded hole 2 matching the threaded rod 2 provided on one side of the U-shaped block 3, the threaded rod 2 passing through the threaded hole 2, and a knob 2 provided at the end of the threaded rod 2 away from the slider 2.
[0005] In a further technical solution, the drive module includes: a guide rail, a guide block 1 mounted on the guide rail, the tooth fixing module mounted on the guide block 1, a servo motor mounted on one end of the guide rail, a lead screw mounted on one end of the servo motor, and the lead screw movably connected to the guide block 1.
[0006] In a further technical solution, a pressure gauge is installed on the side of the connecting plate of the toothbrush fixing module away from the slider two.
[0007] In a further technical solution, the toothpaste module includes: a second guide rail, which is mounted on a support frame. An air pump is installed at one end of the second guide rail, and a second guide block is installed on the second guide rail. The second guide block is driven by the air pump. A drive box is installed on one side of the second guide block. Several drive rods are provided inside the drive box. A motor is installed on each drive rod. A syringe containing toothpaste is installed at the bottom of each drive rod, and a needle is installed at the bottom of the syringe.
[0008] In a further technical solution, a switch button and a control button are installed on the front right side of the housing, a display screen is installed on the front left side of the housing, and a running indicator light is installed on the top of the housing.
[0009] In a further technical solution, the pressure sensor, servo motor, pressure gauge, air pump, motor, switch button, control button, display screen, and operation indicator light are electrically connected.
[0010] In a further technical solution, a tooth is clamped between the U-shaped block and the slider of the tooth fixing module.
[0011] In a further technical solution, a toothbrush is clamped between the second U-shaped block and the movable plate.
[0012] Beneficial effects: This invention can fully simulate the dynamic brushing action of the human body. The dynamic parameters such as brushing force, frequency, and angle can be automatically adjusted and standardized. The dynamic parameters such as brushing force, frequency, and angle can be automatically recorded and displayed, which greatly improves the detection efficiency. Attached Figure Description
[0013] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a toothpaste and toothbrush tester provided in an embodiment of the present invention; Figure 2 and Figure 3 A schematic diagram of the internal structure of a toothpaste and toothbrush tester provided in an embodiment of this utility model; Figure 4A schematic diagram of the drive module structure of a toothpaste and toothbrush tester provided for an embodiment of this utility model; Figure 5 and Figure 6 A schematic diagram of the tooth fixing module structure of a toothpaste and toothbrush tester provided in this embodiment of the present invention; Figure 7 A schematic diagram of the brush fixing module structure of a toothpaste and toothbrush tester provided in this embodiment of the present invention; Figure 8 This is a schematic diagram of the toothpaste module structure of a toothpaste and toothbrush tester provided in an embodiment of the present invention.
[0014] in: 1. Outer shell; 2. Base plate; 3. Drive module; 4. Support frame; 5. Tooth fixing module; 6. Toothbrush fixing module; 7. Toothpaste module; 101. Switch button; 102. Control button; 103. Display screen; 104. Running indicator light; 301. Guide rail one; 302. Guide block one; 303. Servo motor; 304. Rotary shaft screw; 501. Mounting slot; 502. U-shaped block one; 503. Slider one; 504. Threaded rod one; 505. Threaded hole one; 506. Knob one; 507. 601. Teeth; 602. U-shaped block two; 603. Movable plate; 604. Connecting rod; 605. Mounting plate; 606. Pressure sensor; 607. Connecting plate; 608. Slider two; 609. U-shaped block three; 610. Threaded rod two; 611. Threaded hole two; 612. Knob two; 613. Pressure gauge; 614. Toothbrush; 705. Guide rail two; 706. Air pump; 707. Guide block two; 708. Drive box; 709. Drive rod; 7000. Motor; 701. Syringe; 702. Needle. Detailed Implementation
[0015] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0016] Example: like Figures 1 to 8As shown, this utility model embodiment provides a toothpaste and toothbrush tester, including a housing 1, a base plate 2 at the bottom of the housing 1, a drive module 3 and a support frame 4 mounted on the base plate 2, a tooth fixing module 5 mounted on the top of the drive module 3, and a plurality of toothbrush fixing modules 6 and toothpaste modules 7 mounted on the support frame 4; the tooth fixing module 5 includes: a mounting groove 501, a plurality of U-shaped blocks 502 mounted in the mounting groove 501, a slider 503 mounted in the U-shaped blocks 502, a threaded rod 504 fixedly connected to one side of the slider 503, a threaded hole 505 matching the threaded rod 504 provided on one side of the U-shaped blocks 502, the threaded rod 504 passing through the threaded hole 505, and a knob 506 provided at the end of the threaded rod 504 away from the slider 503; the toothbrush fixing module 5 includes: a toothbrush fixing module 6 and a toothpaste module 7 mounted on the support frame 4; the toothbrush fixing module 6 includes: a mounting groove 501, a mounting groove 501, a mounting groove 501, a base plate 2 at the bottom of the housing 1, a base plate 2, a base plate 2, a base plate 3, a support frame 4 mounted on the base plate 2, a drive module 3 and a support frame 4 mounted on the base plate 2, a drive module 3, a toothbrush fixing module 50 ... Group 6 includes: a second U-shaped block 601, a movable plate 602 fixedly connected to the top of the second U-shaped block 601, a connecting rod 603 hinged to one end of the movable plate 602, a mounting plate 604 fixedly connected to the other end of the connecting rod 603, a pressure sensor 605 mounted on the bottom of the end of the mounting plate 604 away from the connecting rod 603, a connecting plate 606 fixedly connected to the top of the mounting plate 604, a second slider 607 fixedly connected to the middle of one side of the connecting plate 606, the second slider 607 slidably mounted in a third U-shaped block 608, a second threaded rod 609 fixedly connected to one side of the second slider 607, a second threaded hole 610 matching the second threaded rod 609 provided on one side of the third U-shaped block 608, the second threaded rod 609 passing through the second threaded hole 610, and a second knob 611 provided at the end of the second threaded rod 609 away from the second slider 607.
[0017] In this embodiment of the invention, a base plate 2 is provided at the bottom of the outer shell 1. A drive module 3 and a support frame 4 are installed on the base plate 2. A tooth fixing module 5 is installed on the top of the drive module 3 for fixing the tooth 507 sample. Several toothbrush fixing modules 6 and toothpaste modules 7 are installed on the support frame 4 for fixing toothbrushes 613 and storing and adding toothpaste, respectively. In the tooth fixing module 5, a U-shaped block 502 is provided in the mounting groove 501. The slider 503 in the U-shaped block 502 cooperates with the knob 506 through the threaded rod 504 to adjust the position of the slider 503, thereby clamping or releasing the tooth 507 sample. In the toothbrush fixing module 6, the U-shaped block 502 is installed in the mounting groove 501. The movable plate 602 at the top of block 2 601 is hinged to the mounting plate 604 via connecting rod 603. The pressure sensor 605 at the bottom of the mounting plate 604 is used to detect the pressure during brushing. The slider 2 607 cooperates with the threaded rod 2 609 and the knob 2 611 to adjust the position of the mounting plate 604 to adapt to the testing requirements of different angles and pressures. Through the layout design of the base plate 2, drive module 3, and support frame 4, a stable equipment architecture is formed. Each module has a clear division of labor, which is convenient for installation and maintenance. The adjustable structure of the tooth fixing module 5 and the toothbrush fixing module 6 can simulate different brushing angles and pressures, realize the standardized adjustment of dynamic parameters, and provide a basis for accurately evaluating the performance of toothpaste and toothbrush 613.
[0018] In one feasible implementation scheme, such as Figure 4 As shown, the drive module 3 includes: a guide rail 301, a guide block 302 mounted on the guide rail 301, the tooth fixing module 5 mounted on the guide block 302, a servo motor 303 mounted on one end of the guide rail 301, and a rotary screw 304 provided on one end of the servo motor 303, the rotary screw 304 being movably connected to the guide block 302. By installing a guide block 302 above the guide rail 301, the tooth fixing module 5 is fixed on the guide block 302. The servo motor 303 at the end of the guide rail 301 is connected to the guide block 302 through a pivot screw 304. The servo motor 303 drives the pivot screw 304 to rotate, causing the guide block 302 to reciprocate along the guide rail 301, thereby making the tooth fixing module 5 move in the horizontal direction, simulating the back-and-forth brushing action when brushing teeth. The servo motor 303 has high-precision control characteristics and can accurately adjust the movement speed, frequency and stroke of the guide block 302 to realize the automated simulation of brushing action. Through standardized motion parameter settings, it is ensured that the movement trajectory of the tooth 507 samples is consistent in each test, improving the repeatability and reliability of the test results.
[0019] In one feasible implementation scheme, such as Figure 7As shown, a pressure gauge 612 is installed on the side of the connecting plate 606 of the toothbrush fixing module 6 away from the slider 607. By installing the pressure gauge 612 on the side of the connecting plate 606 away from the slider 607, the pressure gauge 612 is electrically connected to the pressure sensor 605. The pressure sensor 605 detects the pressure of the toothbrush 613 on the teeth 507 in real time during brushing and transmits the signal to the pressure gauge 612. The pressure gauge 612 displays the current pressure value in a clear numerical or scale format, allowing the operator to monitor the brushing pressure in real time. This facilitates manual adjustment of the knob 611 and the position of the slider 607 during testing, thereby precisely controlling the brushing pressure and ensuring the accuracy and consistency of pressure parameters during the test.
[0020] In one feasible implementation scheme, such as Figure 2 and Figure 8 As shown, the toothpaste module 7 includes: a second guide rail 701, which is mounted on a support frame 4. An air pump 702 is mounted on one end of the second guide rail 701. A second guide block 703 is mounted on the second guide rail 701 and driven by the air pump 702. A drive box 704 is mounted on one side of the second guide block 703. Several drive rods 705 are provided inside the drive box 704. A motor 706 is mounted on each drive rod 705. A syringe 707 is mounted at the bottom of each drive rod 705. The syringe 707 contains toothpaste and a needle 708 is mounted at the bottom of the syringe 707. Guide rail 701 on support frame 4, air pump 702 at one end of guide rail 701 is connected to guide block 703 via air pipe. When air pump 702 works, it generates airflow to drive guide block 703 to move along guide rail 701. Drive rod 705 is provided in drive box 704 on one side of guide block 703. Drive rod 705 is driven up and down by motor 706. The syringe 707 at the bottom of drive rod 705 contains toothpaste. The needle 708 at the bottom of syringe 707 is aligned with the contact area between toothbrush 613 and teeth 507. When toothpaste needs to be added... The motor 706 drives the drive rod 705 to descend, and the toothpaste in the syringe 707 is squeezed out through the needle 708, realizing automatic addition. The cooperation between the air pump 702 and the motor 706 realizes the automated quantitative addition of toothpaste. The number of additions and time can be set according to the test requirements without manual intervention, reducing labor costs and operational errors. The guide rail 701 enables the toothpaste module 7 to move precisely to the designated position, ensuring that the toothpaste is evenly applied to the toothbrush 613, simulating the toothpaste usage during real brushing, and improving the authenticity and reliability of the test.
[0021] In one feasible implementation scheme, such as Figure 1As shown, a switch button 101 and a control button 102 are installed on the front right side of the housing 1, a display screen 103 is installed on the front left side of the housing 1, and a running indicator light 104 is installed on the top of the housing 1. By installing the switch button 101 and control button 102 on the front right side of the housing 1, the switch button 101 is used to start and stop the equipment, and the control button 102 is used to set test parameters. The display screen 103 on the front left side of the housing 1 is used to display real-time test data and the operation interface. The running indicator light 104 on the top of the housing 1 illuminates when the equipment is running, indicating the equipment's working status. This allows operators to easily input test parameters, monitor the test process, and view test results, reducing operational difficulty and improving the ease of use of the equipment. The combination of the running indicator light 104 and the display screen 103 provides clear status feedback, ensuring that operators can promptly understand the equipment's operating status, facilitating real-time adjustments and troubleshooting.
[0022] In one feasible implementation scheme, such as Figure 1 As shown, the pressure sensor 605, servo motor 303, pressure gauge 612, air pump 702, motor 706, switch button 101, control button 102, display screen 103, and running indicator light 104 are electrically connected. These components are electrically connected through a circuit system to form a complete control system. Parameter signals input by control button 102 are transmitted to the control module. The control module drives the servo motor 303, motor 706, and other actuators according to a preset program. Simultaneously, the pressure sensor 605 and other components collect data in real time and transmit it to the display screen 103 for display, achieving automated control and data interaction of the equipment. The integrated design of the electrical connections enables the various components of the equipment to work collaboratively. Software algorithms automate the testing process, including parameter setting, action execution, data acquisition, and result display, improving the intelligence level of the equipment, reducing manual intervention, and ensuring the stability of the testing process and the accuracy of the data.
[0023] In one feasible implementation scheme, such as Figure 5 and Figure 6As shown, a cow's tooth 507 is clamped between the U-shaped block 502 and the slider 503 of the tooth fixing module 5. By clamping the cow's tooth 507 between the U-shaped block 502 and the slider 503 of the tooth fixing module 5 as a test sample, the cow's tooth 507 serves as a sample simulating a real tooth 507. Its material and structure are similar to human teeth 507, allowing for a more accurate reflection of the effects of toothpaste and toothbrush 613 in actual use. The U-shaped block 502 provides support, and rotating the knob 506 drives the threaded rod 504 to rotate, causing the slider 503 to move along the track within the U-shaped block 502, thereby clamping the tooth 507. This ensures that the tooth 507 sample is stably fixed during the test, preventing displacement and avoiding deviations in test data due to loosening of the tooth 507 sample, thus guaranteeing the accuracy and reliability of the test results.
[0024] In one feasible implementation scheme, such as Figure 7 As shown, a toothbrush 613 is clamped between the U-shaped block 601 and the movable plate 602. The toothbrush 613 is held between the U-shaped block 601 and the movable plate 602 of the toothbrush fixing module 6. The U-shaped block 601 is fixed to the support frame 4, and the movable plate 602 is connected to the connecting rod 603 via a hinge, allowing it to rotate around the hinge point to adapt to different testing angles. By adjusting the position of the movable plate 602, the toothbrush 613 maintains a suitable contact angle with the tooth sample 507. Then, the clamping structure fixes the toothbrush 613 between the U-shaped block 601 and the movable plate 602, ensuring the toothbrush 613 is stably fixed during testing. Simultaneously, the hinged design of the movable plate 602 allows for adjustment of the brushing angle, simulating different grip and brushing angles during actual brushing, enabling a comprehensive evaluation of the cleaning effect and durability of the toothbrush 613 at different angles.
[0025] In this embodiment of the present invention, before conducting performance testing of toothpaste and toothbrush 613, the operator first turns on the switch button 101 on the front right side of the device housing 1. At this time, the operation indicator light 104 on the top of the housing 1 lights up, and the device enters standby mode. After confirming that the system initialization is normal through the display screen 103 on the front left side of the housing 1, the cow tooth 507 is placed in the groove between the U-shaped block 502 and the slider 503 of the tooth fixing module 5. The knob 506 is manually rotated to make the threaded rod 504 rotate in the threaded hole 505, which drives the slider 503 to move smoothly along the guide rail of the U-shaped block 502 until the slider 503 and the inner wall of the U-shaped block 502 evenly clamp the cow tooth 507 sample, ensuring that the sample does not shift during the test. The toothbrush 613 to be tested is placed with the brush head facing upwards in the U-shaped block 502 of the toothbrush fixing module 6. Between the second U-shaped block 601 and the movable plate 602, the angle of the movable plate 602 is adjusted. After the angle adjustment is completed, the locking bolt between the movable plate 602 and the second U-shaped block 601 is tightened to fix the position of the toothbrush 613. Then, the second knob 611 is rotated to drive the threaded rod 609 to move the slider 607 within the third U-shaped block 608, thereby adjusting the height of the mounting plate 604 so that the bristles of the toothbrush 613 lightly touch the surface of the teeth 507.At this time, the pressure sensor 605 detects the initial contact pressure in real time and transmits the data to the pressure gauge 612 on the side of the connecting plate 606. The operator further fine-tunes the knob 611 according to the test standard value until the value displayed on the pressure gauge 612 reaches the preset pressure. The operator inputs specific test parameters on the touch interface of the display screen 103 through the control button 102 on the front right side of the outer casing 1. When the test starts, the equipment first executes the self-test program. After confirming that the connection of each module is normal, the servo motor 303 starts and drives the guide block 302 to reciprocate linearly along the guide rail 301 through the rotating shaft screw 304, driving the tooth fixing module 5 to simulate the horizontal movement of human brushing teeth. The air pump 702 drives the guide block 703 to move along the guide rail 701 to directly above the toothbrush 613. The motor 706 in the drive box 704 starts and drives the drive rod 705 to descend, so that the needle at the bottom of the syringe 707... The brush head 708 contacts the toothbrush bristles 613, and toothpaste is evenly squeezed onto the bristles under air pressure. During the test, the pressure sensor 605 continuously monitors changes in brushing pressure, and the real-time data is transmitted to the pressure curve interface on the display screen 103 via electrical signals. The operator can intuitively observe the pressure fluctuations. The servo motor 303 precisely maintains the set motion parameters through a closed-loop control system. The toothpaste module 7 automatically replenishes toothpaste at a preset frequency to ensure consistent toothpaste usage throughout the test. After the test, the servo motor 303 stops operating, the air pump 702 and motor 706 reset, and the display screen 103 automatically calculates and displays the test results, including average pressure value, pressure fluctuation range, brushing frequency stability, and toothpaste usage. The entire testing process strictly follows standardized procedures, and through automated control and real-time data monitoring, human error is effectively reduced, ensuring the accuracy and repeatability of the test results.
Claims
1. A toothpaste and toothbrush tester, characterized in that: Includes a housing (1), a base plate (2) is provided at the bottom of the housing (1), a drive module (3) and a support frame (4) are installed on the base plate (2), a tooth fixing module (5) is installed on the top of the drive module (3), and several toothbrush fixing modules (6) and toothpaste modules (7) are installed on the support frame (4). The dental fixing module (5) includes: a mounting groove (501), in which a plurality of U-shaped blocks (502) are installed, and a slider (503) is installed in the U-shaped blocks (502). A threaded rod (504) is fixedly connected to one side of the slider (503). A threaded hole (505) matching the threaded rod (504) is provided on one side of the U-shaped blocks (502). The threaded rod (504) passes through the threaded hole (505). A knob (506) is provided at the end of the threaded rod (504) away from the slider (503). The toothbrush fixing module (6) includes: a U-shaped block two (601), a movable plate (602) fixedly connected to the top of the U-shaped block two (601), a connecting rod (603) hinged to one end of the movable plate (602), a mounting plate (604) fixedly connected to the other end of the connecting rod (603), a pressure sensor (605) installed at the bottom of the end of the mounting plate (604) away from the connecting rod (603), and a connecting plate (606) fixedly connected to the top of the mounting plate (604). 06) A slider two (607) is fixedly connected to the middle of one side. The slider two (607) is slidably installed in the U-shaped block three (608). A threaded rod two (609) is fixedly connected to one side of the slider two (607). A threaded hole two (610) matching the threaded rod two (609) is provided on one side of the U-shaped block three (608). The threaded rod two (609) passes through the threaded hole two (610). A knob two (611) is provided at the end of the threaded rod two (609) away from the slider two (607).
2. The toothpaste and toothbrush tester according to claim 1, characterized in that: The drive module (3) includes: a guide rail (301), a guide block (302) mounted on the guide rail (301), the tooth fixing module (5) mounted on the guide block (302), a servo motor (303) mounted on one end of the guide rail (301), a screw (304) mounted on one end of the servo motor (303), and the screw (304) being movably connected to the guide block (302).
3. The toothpaste and toothbrush tester according to claim 1, characterized in that: A pressure gauge (612) is installed on the side of the connecting plate (606) of the toothbrush fixing module (6) away from the slider (607).
4. The toothpaste and toothbrush tester according to claim 1, characterized in that: The toothpaste module (7) includes: a second guide rail (701), which is mounted on a support frame (4). An air pump (702) is mounted on one end of the second guide rail (701). A second guide block (703) is mounted on the second guide rail (701). The second guide block (703) is driven by the air pump (702). A drive box (704) is mounted on one side of the second guide block (703). Several drive rods (705) are provided inside the drive box (704). A motor (706) is mounted on the drive rod (705). A syringe (707) is mounted at the bottom of the drive rod (705). The syringe (707) contains toothpaste. A needle (708) is mounted at the bottom of the syringe (707).
5. A toothpaste and toothbrush tester according to claim 1, characterized in that: A switch button (101) and a control button (102) are installed on the right front side of the housing (1), a display screen (103) is installed on the left front side of the housing (1), and a running indicator light (104) is installed on the top of the housing (1).
6. A toothpaste and toothbrush tester according to claim 1, characterized in that: The pressure sensor (605), servo motor (303), pressure gauge (612), air pump (702), motor (706), switch button (101), control button (102), display screen (103) and running indicator light (104) are electrically connected.
7. A toothpaste and toothbrush tester according to claim 1, characterized in that: The tooth (507) is clamped between the U-shaped block (502) and the slider (503) of the tooth fixing module (5).
8. A toothpaste and toothbrush tester according to claim 1, characterized in that: A toothbrush (613) is sandwiched between the U-shaped block (601) and the movable plate (602).