Safety test method, device and test system of oral care equipment and medium
Automatic safety tests are carried out by clamping the oral care equipment by robotic arms, simulate actual brushing scenarios, and use different dental models to evaluate damage, solving the shortcomings of existing testing methods and ensuring equipment safety.
Patent Information
- Application Number
- CN202411127036.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-08-15
AI Technical Summary
During the cleaning process, existing oral care equipment may cause fragile oral damage due to hard part impact on the teeth, and the existing knocking test methods are very different from the actual brushing scene and are poor in overallness.
Through testing equipment such as robotic arms clamping oral care equipment, it simulates the knocking of oral care equipment during the user's teeth care process, and conducts automated safety tests, including clamping modules, knocking test modules and evaluation modules, and uses different teeth models to be tested to simulate different teeth status, and combines image and information collection equipment to evaluate damage information.
It realizes automated safety testing of oral care equipment, improves the comprehensiveness and accuracy of the test, ensures that the equipment does not cause irreversible damage to the teeth during the care process, and provides a basis for improvement.
Smart Images
Figure CN120489585A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of testing oral care equipment, and more specifically, to a safety testing method for oral care equipment, a safety testing device for oral care equipment, a testing system, and a non-transitory computer-readable storage medium. Background Art
[0002] At present, when oral care devices (such as electric toothbrushes) clean various parts of the oral cavity, the hard parts of the oral care devices may hit the teeth during the cleaning process. Over time, this may damage the fragile oral cavity, and the safety of oral care devices is difficult to guarantee.
[0003] Although existing solutions also perform tapping tests on oral care devices, the tapping test method is relatively simple. Not only is it very different from the actual brushing scenario, but the comprehensiveness of the test is also poor. Summary of the Invention
[0004] The embodiments of the present application provide a safety testing method for oral care equipment, a safety testing device for oral care equipment, a testing system and a storage medium. By controlling the movement of a testing device (such as a robotic arm), it can simulate the situation where the oral care device hits the teeth during the user's dental care process, thereby realizing automated safety testing of the oral care device and ensuring the safety of the oral care device during oral care.
[0005] The present application proposes a safety testing method for an oral care device, the method comprising: clamping the oral care device by a testing device; controlling the movement of the testing device so that the oral care device performs a tapping test on a tooth model to be tested; and determining a safety test result of the oral care device based on damage information of the tooth model to be tested before and after the tapping test.
[0006] This application proposes a safety testing device for an oral care device, comprising a clamping module, a tapping test module, and an evaluation module. The clamping module is used to clamp the oral care device using a testing device; the tapping test module is used to control the movement of the testing device so that the oral care device performs a tapping test on a tooth model to be tested; and the evaluation module is used to determine the safety test result of the oral care device based on damage information of the tooth model to be tested before and after the tapping test.
[0007] The present application also proposes a testing system, which includes a testing device, a processor and a memory; the memory stores a computer program, and when the processor executes the program, the safety testing method for the oral care device described in the above embodiment is implemented.
[0008] The present application also proposes a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the safety testing method for an oral care device as described in the above embodiment is implemented.
[0009] The safety testing method, oral care device, testing system, and non-transitory computer-readable storage medium of the oral care device of the present application are characterized by clamping the oral care device with a testing device (such as a robotic arm), which then moves to drive the movement of the oral care device. The oral care device is then used to perform a tapping test on a tooth model to be tested, simulating the impact of the hard part of the oral care device on the teeth when the oral care device is used to care for the teeth, thereby achieving automated safety testing of the oral care device. Finally, based on the damage information of the tapped tooth model to be tested before and after the tapping test, it is possible to determine whether the oral care device is likely to cause irreversible damage to the teeth when performing oral care, and obtain safety test results, thereby facilitating testers to improve the oral care device and ensure the safety of the oral care device.
[0010] Moreover, different tooth models to be tested can simulate the percussion tests under different tooth conditions, thereby covering the percussion tests of teeth of people of different age groups, which is conducive to improving the comprehensiveness of the percussion test.
[0011] In addition, the robotic arm can achieve precise automated motion control, which can better simulate the scenario of users using their arms to hold oral care devices to care for their oral cavity. The tapping test is closer to the actual brushing scenario, which is conducive to improving the accuracy of the tapping test.
[0012] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0014] Figure 1 is a schematic diagram of a scenario of a testing method for an oral care device according to certain embodiments of the present application;
[0015] Figure 2 is an exploded schematic diagram of an oral care device according to certain embodiments of the present application;
[0016] Figure 3 is a first flow chart of a safety testing method for an oral care device according to certain embodiments of the present application;
[0017] Figure 4is a second flow chart of a safety testing method for an oral care device according to certain embodiments of the present application;
[0018] Figure 5 is a third flow chart of a safety testing method for an oral care device according to certain embodiments of the present application;
[0019] Figure 6 is a schematic diagram of a first scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0020] Figure 7 is a schematic diagram of a second scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0021] Figure 8 is a schematic diagram of a third scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0022] Figure 9 is a schematic diagram of a fourth scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0023] Figure 10 is a schematic diagram of a fifth scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0024] Figure 11 is a schematic diagram of a sixth scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0025] Figure 12 is a schematic diagram of a seventh scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0026] Figure 13 is a schematic diagram of an eighth scenario of a safety testing method for an oral care device according to certain embodiments of the present application;
[0027] Figure 14 is a schematic diagram of a module of a safety testing device according to certain embodiments of the present application;
[0028] Figure 15 It is a schematic diagram of the connection status of a non-volatile computer-readable storage medium and a processor in certain embodiments of the present application. DETAILED DESCRIPTION
[0029] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.
[0030] To facilitate understanding of this application, the following are explanations of the terms that appear in this application:
[0031] Oral care devices are devices used to care for the oral cavity.
[0032] Optionally, the oral care device may be an electric toothbrush, a dental scaler, an oral irrigator, an interdental cleaning device, a dental floss cleaning device, or the like.
[0033] To more vividly illustrate the various technical solutions in the embodiments of the present disclosure, the safety testing method for oral care devices of the present application will be described below using an electric toothbrush as an example. It is understood that the principles for implementing the safety testing method for oral care devices of the present application are substantially similar for other oral care devices and will not be elaborated upon here. It should be emphasized that this is merely an example and does not specifically limit the scope of application of the embodiments of the present disclosure.
[0034] See also Figure 1 The application scenario of the present application is first introduced below, and the application scenario includes a test system 100 and an oral care device 200. The test system 100 is used to perform a tap test on the oral care device 200 and evaluate the test results.
[0035] In some embodiments, the testing system 100 includes a testing device 10 and a tooth model 20 to be tested.
[0036] The testing device 10 refers to a device that can hold the oral care device 200 and drive the oral care device 200 to move in any posture in a three-dimensional space.
[0037] For example, the testing device 10 includes a robotic arm, an automated mechanical device that can mimic the movements of a human arm. The robotic arm comprises a base, joints, and an end effector. The end effector is controlled by the movement of the joints relative to the base to move the end effector in three-dimensional space. The end effector is used to grip an oral care device and move the device in any desired position within three dimensions.
[0038] For another example, the testing device 10 includes various robots (such as industrial robots).
[0039] The following description will be made using an example of a robotic arm holding an electric toothbrush. When the test device 10 is other devices, the principles are basically similar and will not be repeated here.
[0040] The tooth model 20 to be tested is used to simulate the teeth in the oral cavity.
[0041] The testing device 10 drives the oral care device 200 to move by its own movement, so that the oral care device 200 performs a tapping test on the tooth model 20 to be tested.
[0042] In some embodiments, see Figure 1 and Figure 2 The oral care device 200 includes a movement 210 , a handle shell 220 and a care component 230 , and the movement 210 includes a mounting bracket 211 and a driving component 212 .
[0043] The driving component 212 is mounted on the mounting bracket 211. The care component 230 is used for oral care, such as cleaning teeth, and the care component 230 is connected to the driving component 212, and the driving component 212 is used to drive the care component 230 to move (drive the care component 230 to rotate and / or extend).
[0044] Optionally, the care component 230 includes a brush head 231 and a brush handle 232. The brush head 231 is arranged at the end of the brush handle 232, and the brush handle 232 is arranged on the driving shaft of the driving component 212. When the driving shaft moves, it drives the brush handle 232 and the brush head 231 to move.
[0045] Optionally, the brush head 231 includes a front side on which bristles are provided, a back side opposite to the front side, a side surface connecting the front side and the back side, and a brush neck.
[0046] When a user uses the oral care device 200 to clean the oral cavity, the user generally cleans through the front of the brush head 231. However, due to the movement of the driving component 212, the brush head 231 will vibrate, causing the back or side of the brush head 231, the brush neck, and even the hard parts such as the brush handle to hit the teeth. Over time, this may cause damage to the teeth.
[0047] Optionally, a switch button 240 is further provided on the handle housing 220. The switch button 240 is used to control the start or stop of the oral care device. Alternatively, the switch button can control the oral care device to work in various preset gears, and the cleaning parameters of each gear are different.
[0048] Based on the introduction of the above-mentioned related scenarios, the embodiment of the present application provides a safety testing method for an oral care device. The safety testing method for an oral care device is described in detail below:
[0049] See also Figure 3 , Figure 3 1 is a flow chart of a safety test method for an oral care device provided in an embodiment of the present application. The safety test method for an oral care device provided in an embodiment of the present application is implemented by steps 011 to 013, which are described in detail below.
[0050] Step 011: Clamping the oral care device with a test device;
[0051] Specifically, to drive the oral care device, the test device must first be controlled to grip the oral care device, such as by using the end effector of a robotic arm to grip the oral care device, thereby simulating a human hand holding the oral care device. Alternatively, a tester can manually load the oral care device onto the test device so that the test device grips the oral care device.
[0052] Step 012: Control the movement of the test device so that the oral care device performs a tapping test on the tooth model to be tested;
[0053] The tooth model to be tested refers to a model that simulates teeth in the oral cavity.
[0054] Optionally, the tooth models to be tested include multiple ones, and the multiple tooth models to be tested correspond to at least one of different age ranges, tooth regions, tooth materials, oral environments, and oral lesion conditions.
[0055] That is to say, in order to test teeth with different dental conditions, tooth models with different dental conditions can be made respectively.
[0056] For example, the shape and hardness of teeth in different age ranges, such as childhood, adolescence, youth, middle age, and old age, are different.
[0057] For another example, the shapes and hardness of different tooth areas, such as incisors, lateral incisors, canines, molars, etc., are also different.
[0058] For example, when teeth are missing or diseased, some users have had fillings or veneers installed, which can cause changes in the tooth material. Different tooth materials, including simulated human teeth, ceramic veneers, implants (titanium alloy materials), and porcelain teeth, cause different types of damage when struck. Simulated human teeth can be made from materials such as real human teeth, animal teeth, or hydroxyapatite sheets, with a structure and hardness similar to human teeth.
[0059] For example, the damage caused by knocking teeth is different in different oral environments, such as acidic environments caused by eating acidic substances, acid reflux or bacterial acid production, and normal oral environments (i.e., healthy oral environments);
[0060] For example, the damage caused by knocking teeth is different in different oral lesions, such as caries, cracks and normal conditions.
[0061] Specifically, after simulating the situation of holding the oral care device, the robot arm can drive the oral care device to move by controlling the movement of the robot arm, thereby realizing the tapping test on the tooth model to be tested.
[0062] Optionally, the movement of the robotic arm can be local movement, that is, controlling the oral care device to perform a tapping test on a specific local tooth area of the tooth model to be tested; or, the movement of the robotic arm can also be global movement, and the robotic arm will move relative to the entire tooth model to be tested to control the oral care device to perform a tapping test on each area of the tooth model to be tested, and the robotic arm can also control the oral care device to perform a tapping test while moving, that is, tapping while moving.
[0063] Optionally, before controlling the movement of the test device, the test device is controlled to trigger a switch button of the oral care device to adjust the cleaning parameters of the electric toothbrush.
[0064] It's understandable that the likelihood of a user's hand movements causing tooth tapping is unpredictable, and since users generally don't need to manually brush their teeth with oral care devices, the likelihood of such a tapping is low. Therefore, we only need to focus on the tapping caused by the vibration of the electric toothbrush. To test this, we need to turn on the electric toothbrush and start vibrating it before testing.
[0065] Therefore, by controlling the test equipment to trigger the switch button of the oral care device, the electric toothbrush can be controlled to start working, and the switch button can generally also control the cleaning parameters of the electric toothbrush. For example, the switch button can be switched between gears 0 and 3, gear 0 means stopping working, and the cleaning parameters of gears 1 to 3 are different from each other.
[0066] For example, the vibration frequencies and amplitudes of gears 1 to 3 are different, and the electric toothbrush of the present application can perform a sweeping motion, that is, a sweeping motion is superimposed on the vibration, thereby expanding the cleaning range of the electric toothbrush. Therefore, the sweeping amplitudes, sweeping frequencies, etc. of gears 1 to 3 can also be different.
[0067] In this way, by controlling the vibration of the electric toothbrush, the knocking test of the electric toothbrush is realized by simulating the situation where the electric toothbrush knocks the teeth due to vibration when cleaning the teeth.
[0068] Optionally, the motion parameters of the test device are determined based on set motion parameters, and the set motion parameters are determined based on the tooth model to be tested.
[0069] For example, the motion parameters are set by the tester, that is, the tester manually sets them based on experience.
[0070] For another example, the preset artificial intelligence-based parameter setting model can generate set motion parameters based on the information of the tooth model to be tested; wherein, the parameter setting model is generated based on a preset training set training, and the training set includes different tooth models to be tested, and the set motion parameters when each tooth model to be tested is tested.
[0071] It is understandable that for different tooth models to be tested, due to different dental conditions, the set motion parameters set during the tapping test may also be different. By collecting in advance the set motion parameters set for the tooth model to be tested based on the experience of each tester when performing the tapping test, a training set can be generated. Thus, a parameter setting model is obtained by pre-training with the training set. When used, the parameter setting model can automatically set the set motion parameters based on the parameters of the tooth model to be tested (such as the parameters of the tooth model to be tested determined by image recognition, pre-input, etc.), thereby improving the degree of automation of the test.
[0072] Optionally, the set motion parameters include at least one of movement speed, brushing force and test duration.
[0073] For example, by obtaining the brushing speed, brushing force, and brushing time of a person's hand brushing, the motion parameters of the test device are set, that is, the motion parameters are set. For example, the movement speed of the robotic arm is used to simulate the brushing speed of a person's hand brushing (such as generally any value from 2 mm (mm) / second (s) to 30 mm / s, such as 15 mm / s), the brushing force of the robotic arm (specifically the force applied to the teeth by an electric toothbrush, such as any value from 100 grams to 400 grams, such as 200g) is used to simulate the brushing force of a person's hand, and the brushing time of the robotic arm is used to simulate the case of a user brushing their teeth for a long time. The brushing time of the robotic arm is determined according to the total time the user has brushed their teeth for a long time, such as the total brushing time of the user ranging from 4 to 50 years, and then brushing for about 2 minutes to 5 minutes each time, thereby determining that the brushing time of the robotic arm is 30 hours (h) to 300 hours, such as the brushing time of the robotic arm is 150 hours.
[0074] In this way, the impact of human hands on teeth during long-term brushing can be accurately simulated.
[0075] See also Figure 1 and Figure 4 Optionally, the oral care device 200 stops working after a preset time, and the test device 100 is further provided with a vibration detection device 30 ( Figure 1 ), the vibration detection device 30 is used to detect whether the oral care device 200 is in a vibrating state, and step 012 includes:
[0076] Step 0121: When the oral care device is not in the vibration state and the duration of the tapping test has not reached the preset duration, control the test device to trigger the switch button again;
[0077] Step 0122: When the duration of the tapping test reaches a preset duration, it is determined that the tapping test is completed, and the oral care device is controlled to stop working by triggering the switch button.
[0078] Specifically, when the oral care device is not in a vibrating state, it can be determined that the duration of the tapping test has not reached a preset duration (the preset duration can be the test duration set in the aforementioned setting of the motion parameters). If it has not reached, it can be determined that the tapping test has not been completed. If the duration of the tapping test has reached the preset duration, it can be determined that the tapping test is completed. At this time, if the oral care device is still vibrating, the oral care device can be stopped by triggering the switch button. If the oral care device is not in a vibrating state, there is no need to trigger the switch button. In this way, the tapping test can be ensured to be completed accurately.
[0079] Optionally, the oral care device includes a striking portion, and step 012 includes:
[0080] Step 0123: Control the movement of the testing device to strike the tooth model to be tested through the striking portion.
[0081] Specifically, since oral care devices generally tap the teeth with their hard parts during oral care, the tapping locations of different oral care devices can be determined, such as the handle, back and sides of an electric toothbrush, and the head of an oral irrigator. After determining the tapping location, the robotic arm can control the movement of the oral care device so that the tapping location is aligned with the teeth. The oral care device (such as an electric toothbrush) then vibrates to perform a tapping test on the corresponding teeth.
[0082] In this way, the knocking position of the oral care device is accurately controlled to perform the knocking test, thereby ensuring the effectiveness of the knocking test.
[0083] Optionally, the striking position includes multiple striking angles when striking the teeth of the tooth model to be measured.
[0084] It is understandable that when a user uses an oral care device, the grip angle constantly changes, causing the tapping angle of the tapping part when tapping the teeth to also constantly change. Therefore, in order to simulate this situation and increase the accuracy of the tapping test, the robotic arm can control the tapping part of the oral care device to tap the teeth of the tooth model to be tested at different tapping angles. For example, the robotic arm can control the tapping part of the oral care device to tap the teeth of the tooth model to be tested at tapping angles such as perpendicular to the tooth surface, 75 degrees relative to the tooth surface, 60 degrees relative to the tooth surface, 45 degrees relative to the tooth surface, 30 degrees relative to the tooth surface, and 15 degrees relative to the tooth surface.
[0085] Step 013: Based on the damage information of the tooth model to be tested before and after the tapping test, determine the safety test result of the oral care device.
[0086] Specifically, in order to evaluate the damage caused by the tapping test to the tooth model to be tested, it is necessary to obtain the damage information of the tooth model to be tested before and after the tapping test. By comparing the damage information before and after the tapping test, the damage caused by the tapping test can be determined, thereby determining the safety test results of the oral care equipment.
[0087] See also Figure 1 , Optionally, the security testing method is applied to a test system 100 , which includes an image acquisition device 40 ;
[0088] See also Figure 4 , step 013 includes:
[0089] Step 0131: Acquire a first image of the tooth model to be tested before the tapping test and a second image of the tooth model to be tested after the tapping test through an image acquisition device;
[0090] Step 0132: Determine damage information of the tooth model to be tested after the tapping test based on the first image and the second image;
[0091] Step 0133: Determine the safety test result based on the damage information.
[0092] Specifically, the image acquisition device of the test system can be used to obtain a first image of the tooth model to be tested before the tap test and a second image of the tooth model to be tested after the tap test. The first image can characterize the damage condition of the tooth model to be tested before the tap test (generally, in order to simulate normal teeth, the tooth model to be tested before the tap test is generally not damaged), and the second image can characterize the damage condition of the tooth model to be tested after the tap test. Therefore, based on the first image and the second image, the damage information of the tooth model to be tested caused by the tap test can be determined. After determining the damage information of the tooth model to be tested caused by the tap test, an assessment can be performed based on the damage information to determine the safety test result.
[0093] For example, based on the damage information, it is evaluated whether the tooth model to be tested has irreversible damage. If so, it is considered that there is a safety risk for the oral care device, and the safety test result is a failed test; if there is no irreversible damage, it is considered that there is no safety risk for the oral care device, and the safety test result is a passed test.
[0094] In this way, the safety test results are automatically determined by automatically collecting model images before and after the tap test through the image acquisition device, further improving the automation level of the tap test.
[0095] See also Figure 5 Optionally, the damage information includes the damage type and damage degree. Step 0133 includes:
[0096] Step 01331: When the damage type is the first preset type, determine that the safety test fails;
[0097] Step 01332: When the damage type is the second preset type and the damage degree is less than the preset degree threshold, it is determined that the safety test is qualified and the safety risk of the first preset type is greater than the safety risk of the second preset type.
[0098] Specifically, the types of tooth damage are divided into a first preset type in which the damage is more serious and can be detected through image recognition, and a second preset type in which it is difficult to accurately determine the damage situation through image recognition. In this case, the damage is generally lighter, that is, the safety risk of the first preset type is greater than the safety risk of the second preset type.
[0099] The first preset type may be fracture or defect. The second preset type includes no damage, that is, due to the limitation of image detection accuracy, image recognition is difficult to accurately determine the damage, and the detection result is no damage.
[0100] When the damage type is the first preset type, it can be accurately determined that the tooth model to be tested has suffered relatively serious damage, and it can be accurately determined that the safety test has failed; when the damage type is the second preset type, although the damage is relatively minor, for teeth, cracks larger than 1 micron are generally difficult to repair automatically, and there is also a possibility of test failure. Therefore, it is necessary to further fine-tune the degree of damage (for example, using higher-precision equipment for damage detection). When the degree of damage is less than the preset degree threshold, it can be accurately determined that the safety test has passed, and when the degree of damage is greater than or equal to the preset degree threshold, it can be accurately determined that the safety test has failed.
[0101] See also Figure 1 Optionally, the test system 100 further includes an information collection device 50, and the damage degree is determined based on the first surface information and the second surface information collected by the information collection device 50 before and after the knocking test;
[0102] The number of modalities of the surface information collected by the information collection device is greater than the number of modalities of the image collection device; and / or the collection accuracy of the surface information collected by the information collection device is greater than the collection accuracy of the image collection device.
[0103] That is to say, the test system can be equipped with information acquisition equipment that can collect information in more modes (such as a variety of different data types or information sources, such as image information, point cloud information, spectral information, etc.) to accurately determine the extent of damage, and / or, through the use of information acquisition equipment with higher acquisition accuracy (such as image acquisition equipment with higher resolution) to accurately determine the extent of damage, thereby achieving accurate damage degree detection, improving the accuracy of damage assessment, and thereby improving the accuracy of safety test results.
[0104] Optionally, the information acquisition device includes at least one of a white light interferometer and / or a scanning electron microscope.
[0105] Among them, the white light interferometer is a precision measuring instrument that uses the principle of light wave interference to measure physical quantities such as the surface morphology and thickness of an object.
[0106] Optionally, the first surface information and the second surface information both include at least one of volume information, three-dimensional morphology information, surface defect height information, defect size distribution information and surface roughness information.
[0107] For white light interferometers, more detailed information about the surface of the tooth model to be tested can be detected. For example, by measuring physical quantities such as morphology and thickness, at least one of the volume information, three-dimensional morphology information, surface defect height information, defect size distribution information and surface roughness information of the surface of the tooth model to be tested can be obtained.
[0108] The testing method of the present application controls a test device (such as a robotic arm) to clamp the oral care device, then moves the test device to drive the movement of the oral care device. The oral care device is then used to perform a tapping test on a tooth model to be tested, simulating the tapping of the hard part of the oral care device on the teeth when the oral care device is used to care for the teeth, thereby achieving automated safety testing of the oral care device. Finally, based on the damage information of the tapped tooth model to be tested before and after the tapping test, it can be determined whether the oral care device is likely to cause irreversible damage to the teeth during oral care, and a safety test result can be obtained, thereby facilitating the tester to improve the oral care device and ensure the safety of the oral care device.
[0109] Moreover, different tooth models to be tested can simulate the percussion tests under different tooth conditions, thereby covering the percussion tests of teeth of people of different age groups, which is conducive to improving the comprehensiveness of the percussion test.
[0110] In addition, the robotic arm can achieve precise automated motion control, which can better simulate the scenario of users using their arms to hold oral care devices to care for their oral cavity. The tapping test is closer to the actual brushing scenario, which is conducive to improving the accuracy of the tapping test.
[0111] In some embodiments, the safety testing method for an oral care device further includes controlling the testing device to clean the tooth model to be tested after the tapping test is completed.
[0112] Specifically, after the tapping test is completed, the tooth model to be tested may have a lot of debris generated by the tapping distributed on the surface. At this time, if the surface information of the tooth model to be tested is directly collected, these debris may affect the subsequent damage detection. Therefore, after the tapping test is completed and before obtaining the surface information of the tooth model to be tested after the tapping test, the robotic arm can be controlled to use anhydrous ethanol to gently clean the entire surface of the tooth model to be tested, so as to ensure the accuracy of the surface information of the tooth model to be tested after the tapping test, thereby improving the accuracy of the tapping result evaluation.
[0113] In order to facilitate understanding of the testing method of the present application, the testing method of the present application is described below with specific examples.
[0114] In one example, a tapping test is performed on a second type of electric toothbrush to be tested (the brush head is a cushioning brush head that can reduce the damage caused by vibration to the teeth, and the cleaning gear is the gear with the highest vibration intensity). The process is as follows:
[0115] The hydroxyapatite sheet to be tested (i.e., the tooth model to be tested) is fixed on the test table. After fixing the shooting position, the camera (i.e., image acquisition device) is used to capture and photograph the original surface state of the sample. The electric toothbrush to be tested is clamped by a robotic arm, and the start button (i.e., switch button) is triggered to control the electric toothbrush to start and work with the corresponding cleaning parameters (e.g., working with the cleaning parameters corresponding to gear 1). The tapping position of the electric toothbrush (e.g., the back or side of the brush head) is controlled to tap at a tapping angle perpendicular to the tooth surface of the tooth model to be tested, and the actual brushing speed (7 mm / s), brushing force (250 g), and brushing time (100 h) of the human hand are simulated. Generally, the toothbrush is kept on for 2 to 5 minutes. The vibration detection sensor module (i.e., vibration detection device) monitors whether the electric toothbrush is in the on-vibration state. When the electric toothbrush automatically turns off, the switch button can be re-triggered to keep it tapping for a long time. After the tapping test, the entire surface of the hydroxyapatite sheet is gently cleaned with anhydrous ethanol using the robotic arm to prevent debris dropped during the tapping test from interfering with the subsequent sampling process.
[0116] See also Figure 6 and Figure 7 , respectively, are the surfaces of the hydroxyapatite sheet before and after the tapping test. Comparing the surfaces before and after the tapping test revealed no obvious fractures or defects, suggesting that this electric toothbrush, under the current cleaning parameters, does not significantly damage normal tooth surfaces.
[0117] In one example, a first electric toothbrush to be tested (a stainless steel brush head to mitigate vibration damage to teeth, and a cleaning gear with a high vibration level (lower than the maximum gear)) is subjected to a tapping test. The process is as follows:
[0118] The hydroxyapatite sheet to be tested (i.e., the tooth model to be tested) is fixed on the test table. After fixing the shooting position, the camera (i.e., image acquisition device) is used to capture and photograph the original surface state of the sample. The electric toothbrush to be tested is clamped by a robotic arm, and the start button (i.e., switch button) is triggered to control the electric toothbrush to start and work with the corresponding cleaning parameters (e.g., working with the cleaning parameters corresponding to gear 1). The tapping position of the electric toothbrush (e.g., the back or side of the brush head) is controlled to tap at a tapping angle perpendicular to the tooth surface of the tooth model to be tested, and the actual brushing speed (7 mm / s), brushing force (250 g), and brushing time (100 h) of the human hand are simulated. Generally, the toothbrush is kept on for 2 to 5 minutes. The vibration detection sensor module (i.e., vibration detection device) monitors whether the electric toothbrush is in the on-vibration state. When the electric toothbrush automatically turns off, the switch button can be re-triggered to keep it tapping for a long time. After the tapping test, the entire surface of the hydroxyapatite sheet is gently cleaned with anhydrous ethanol using the robotic arm to prevent debris dropped during the tapping test from interfering with the subsequent sampling process.
[0119] See also Figure 8 and Figure 9 , respectively, the surface of the hydroxyapatite sheet before and after the tapping test. Comparing the sample surfaces before and after the tapping test revealed significant defects and cracks after the test, with a defect area of approximately 0.01 square millimeters. This suggests that the electric toothbrush, under these cleaning parameters, can cause significant damage to normal tooth surfaces.
[0120] In another example, a second type of electric toothbrush to be tested (with a stainless steel brush head to reduce vibration damage to teeth, and the cleaning gear being the gear with the highest vibration level) was subjected to a tapping test. The process is as follows:
[0121] A cracked hydroxyapatite sheet is selected to simulate the possible hidden cracks in the teeth. The hydroxyapatite sheet to be tested (i.e., the tooth model to be tested) is fixed on the test table. After fixing the shooting position, a camera (i.e., an image acquisition device) is used to capture and photograph the original surface state of the sample. The electric toothbrush to be tested is clamped by a robotic arm, and the start button (i.e., the switch button) is triggered to control the start of the electric toothbrush and work with the corresponding cleaning parameters (e.g., working with the cleaning parameters corresponding to gear 1). The striking part of the electric toothbrush (e.g., the back or side of the brush head) is controlled to be perpendicular to the tooth surface of the tooth model to be tested. The electric toothbrush is tapped at a certain angle and simulates the actual brushing speed (7 mm / s), brushing force (250 g) and brushing time (100 h) of human hands. Generally, the toothbrush is kept on for 2 to 5 minutes. The vibration detection sensor module (i.e., the vibration detection device) monitors whether the electric toothbrush is in the on-vibration state. When the electric toothbrush automatically turns off, the switch button can be re-triggered to keep it tapping for a long time. After the tapping test, the entire surface of the hydroxyapatite sheet is gently cleaned with anhydrous ethanol using a robotic arm to prevent debris falling during the tapping test from interfering with the subsequent sampling process.
[0122] See also Figure 10 and Figure 11 , respectively, are the surfaces of the hydroxyapatite sheet before and after the tapping test. By comparing the sample surfaces before and after the tapping test, it was found that obvious fractures appeared after the tapping test, suggesting that the electric toothbrush, under this mode of action, will cause significant damage to the tooth surface with hidden cracks.
[0123] In another example, a tapping test was performed on a third type of electric toothbrush to be tested (with an ABS brush head (i.e., a brush head made of ABS plastic. ABS (Acrylonitrile Butadiene Styrene) is a common thermoplastic) and a cleaning gear with a high vibration level (lower than the maximum gear)). The process is as follows:
[0124] A cracked hydroxyapatite sheet is selected to simulate the possible hidden cracks in the teeth. The hydroxyapatite sheet to be tested (i.e., the tooth model to be tested) is fixed on the test table. After fixing the shooting position, a camera (i.e., an image acquisition device) is used to capture and photograph the original surface state of the sample. The electric toothbrush to be tested is clamped by a robotic arm, and the start button (i.e., the switch button) is triggered to control the start of the electric toothbrush and work with the corresponding cleaning parameters (e.g., working with the cleaning parameters corresponding to gear 1). The striking part of the electric toothbrush (e.g., the back or side of the brush head) is controlled to be perpendicular to the tooth surface of the tooth model to be tested. The electric toothbrush is tapped at a certain angle and simulates the actual brushing speed (7 mm / s), brushing force (250 g) and brushing time (100 h) of human hands. Generally, the toothbrush is kept on for 2 to 5 minutes. The vibration detection sensor module (i.e., the vibration detection device) monitors whether the electric toothbrush is in the on-vibration state. When the electric toothbrush automatically turns off, the switch button can be re-triggered to keep it tapping for a long time. After the tapping test, the entire surface of the hydroxyapatite sheet is gently cleaned with anhydrous ethanol using a robotic arm to prevent debris falling during the tapping test from interfering with the subsequent sampling process.
[0125] See also Figure 12 and Figure 13 , respectively, are the surfaces of the hydroxyapatite sheet before and after the tapping test. Comparing the surfaces of the samples before and after the tapping test revealed that the area of damage increased from 0.01 to 0.03 square millimeters after the tapping test. This suggests that the electric toothbrush, under these cleaning parameters, can cause significant damage to cracked tooth surfaces.
[0126] See also Figure 14 To facilitate better implementation of the oral care device safety testing method of the embodiment of the present application, the embodiment of the present application further provides a safety testing device 300 for an oral care device. The safety testing device 300 for an oral care device may include a clamping module 301, a tapping test module 302, and an evaluation module 303. The clamping module 301 is used to control the test device to clamp the oral care device; the tapping test module 302 is used to control the movement of the test device so that the oral care device performs a tapping test on the tooth model to be tested; and the evaluation module 303 is used to determine the safety test result of the oral care device based on the damage information of the tooth model to be tested before and after the tapping test.
[0127] It should be noted that the specific details of each module unit in the above-mentioned safety testing device 300 have been described in detail in the embodiment of the above-mentioned testing method and will not be repeated here.
[0128] The above text describes the safety testing device 300 for oral care equipment from the perspective of functional modules in conjunction with the accompanying drawings. The functional modules can be implemented in hardware form, can be implemented by instructions in software form, or can be implemented by a combination of hardware and software modules. Specifically, the steps of the method embodiments in the embodiments of the present application can be completed by hardware integrated logic circuits and / or software instructions in the processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware coding processor, or can be executed by a combination of hardware and software modules in the coding processor. Optionally, the software module can be located in a mature storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps in the above method embodiments in conjunction with its hardware.
[0129] Please refer again Figure 1 The test system includes a test device, a processor and a memory according to any of the above-mentioned embodiments. The memory stores a computer program that can be run on the processor. When the program is executed by the processor, it can control the test device to implement the various processes of the embodiment of the safety testing method of the above-mentioned oral care device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
[0130] See also Figure 15 The embodiment of the present application also provides a computer-readable storage medium 500 on which a computer program 510 is stored. When the computer program 510 is executed by a processor 520, the steps of the safety testing method for oral care equipment of any of the above-mentioned embodiments are implemented. For the sake of brevity, they are not repeated here.
[0131] In the description of this specification, the reference terms "certain embodiments", "in an example", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.
[0132] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.
[0133] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A safety testing method for an oral care device, characterized in that: include: holding the oral care device by a testing device; controlling the movement of the testing device so that the oral care device performs a tapping test on the tooth model to be tested; Based on the damage information of the tooth model to be tested before and after the knocking test, a safety test result of the oral care device is determined.
2. The safety testing method according to claim 1, characterized in that: The motion parameters of the testing device are determined based on set motion parameters, and the set motion parameters are determined based on the tooth model to be tested.
3. The safety testing method according to claim 2, characterized in that: The set motion parameters include at least one of movement speed, brushing force and test duration.
4. The safety testing method according to claim 2, characterized in that: The set motion parameters are customized by the tester; Alternatively, a preset artificial intelligence-based parameter setting model generates the set motion parameters based on the information of the tooth model to be tested; wherein, the parameter setting model is generated based on a preset training set training, and the training set includes different tooth models to be tested, and the set motion parameters when each tooth model to be tested is tested.
5. The safety testing method according to any one of claims 1 to 4, characterized in that: The tooth models to be tested include multiple ones, and the multiple tooth models to be tested correspond to at least one of different age ranges, tooth regions, tooth materials, oral environments, and oral lesion conditions.
6. The safety testing method according to claim 5, characterized in that: The age range includes multiple age ranges, and the hardness of the tooth model to be tested in different age ranges is different; The tooth region includes at least one of an incisor region, a lateral incisor region, a canine region, and a molar region; The tooth material includes at least one of simulated human teeth, ceramic tooth veneers, dental implants and porcelain teeth, and the simulated human teeth include real human teeth, animal teeth or hydroxyapatite sheets; The oral environment includes at least one of a normal environment and an acid-etching environment; The oral lesions include at least one of caries and fissures.
7. The safety testing method according to claim 1, wherein: Prior to controlling the movement of the test device, the method further comprises: The test device is controlled to trigger a switch button of the oral care device to adjust the cleaning parameters of the test device.
8. The safety testing method according to claim 7, characterized in that: The oral care device stops working after a preset time period, and the test device is further provided with a vibration detection device, which is used to detect whether the oral care device is in a vibrating state. The control of the movement of the test device so that the oral care device performs a tapping test on the tooth model to be tested also includes: When the oral care device is not in the vibration state and the duration of the tapping test has not reached a preset duration, controlling the testing device to trigger the switch button again; When the duration of the tapping test reaches a preset duration, it is determined that the tapping test is completed, and the oral care device is controlled to stop working by triggering the switch button.
9. The safety testing method according to claim 1, wherein: The oral care device includes a knocking portion, and controlling the movement of the test device so that the oral care device performs a knock test on the tooth model to be tested includes: The testing device is controlled to move so as to strike the tooth model to be tested through the striking portion.
10. The safety testing method according to claim 9, characterized in that: The oral care device includes an electric toothbrush, which includes a brush head. The brush head includes a front side on which bristles are provided, a back side opposite to the front side, and a side side connecting the front side and the back side. The knocking part includes at least one of the back side and the side side.
11. The safety testing method according to claim 9 or 10, characterized in that: The striking portion may have a plurality of striking angles when striking the teeth of the tooth model to be tested.
12. The safety testing method according to claim 11, characterized in that: The multiple tapping angles include vertical tooth surface, tapping tooth surface at an angle of 45 degrees relative to the tooth surface, and tapping tooth surface at an angle of 30 degrees relative to the tooth surface.
13. The safety testing method according to claim 1, wherein: Also includes: After the tapping test is completed, the testing device is controlled to clean the tooth model to be tested.
14. The safety testing method according to claim 1, wherein: Applied to a testing system including an image acquisition device, the method for determining a safety test result of the oral care device based on the damage condition of the tooth model to be tested before and after the tapping test includes: Acquire, by the image acquisition device, a first image of the tooth model to be tested before the tapping test, and a second image of the tooth model to be tested after the tapping test; determining damage information of the tooth model to be tested after the tapping test based on the first image and the second image; Based on the damage information, the safety test result is determined.
15. The safety testing method according to claim 14, characterized in that: The damage information includes a damage type and a damage degree. The determining of the safety test result based on the damage information includes: When the damage type is a first preset type, determining that the safety test fails; When the damage type is the second preset type and the damage degree is less than the preset degree threshold, it is determined that the safety test is qualified and the safety risk of the first preset type is greater than the safety risk of the second preset type.
16. The safety testing method according to claim 15, characterized in that: The first preset type includes fracture and defect; the second preset type includes no damage.
17. The safety testing method according to claim 15 or 16, characterized in that: The testing system further includes an information collection device, wherein the damage degree is determined based on first surface information and second surface information respectively collected by the information collection device before and after the knocking test; Among them, the number of modes of surface information collected by the information collection device is greater than the number of modes of the image collection device; and / or the collection accuracy of the surface information collected by the information collection device is greater than the collection accuracy of the image collection device.
18. The safety testing method according to claim 17, characterized in that: The information acquisition device includes at least one of a white light interferometer and / or a scanning electron microscope.
19. The safety testing method according to claim 17, wherein: The first surface information and the second surface information both include at least one of volume information, three-dimensional morphology information, surface defect height information, defect size distribution information, and surface roughness information.
20. A safety testing device for oral care equipment, characterized in that: The oral care device includes a drive component, and the device includes: a clamping module for clamping the oral care device via a testing device; a knock test module, configured to control the movement of the test device so that the oral care device performs a knock test on the tooth model to be tested; An evaluation module determines a safety test result of the oral care device based on damage information of the tooth model to be tested before and after the knock test.
21. A testing system, characterized in that: The invention comprises a testing device, a processor and a memory; the memory stores a computer program, and when the processor executes the program, the safety testing method for the oral care device according to any one of claims 1 to 19 is implemented.
22. The test system according to claim 21, wherein: The testing device includes a robotic arm.
23. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the safety testing method for an oral care device according to any one of claims 1 to 19 is implemented.