Wearable oral implant stability detection system and detection method

Abstract

The application provides a wearable oral implant stability detection system and a detection method. The system comprises an intraoral assembly and an extraoral module connected with the intraoral assembly. The intraoral assembly comprises a positioning unit for positioning the intraoral assembly at a fixed position in the oral cavity opposite to the implant; an excitation unit for generating an excitation field; a response element mechanically coupled with the implant for generating a mechanical response under the action of the excitation field to drive the implant to vibrate; and a detection unit for detecting the magnetic field change caused by the mechanical response and outputting a response signal. The extraoral module is worn outside the patient's body and comprises a control unit for controlling the excitation unit to generate the excitation field; and a signal processing unit for collecting and analyzing the response signal. The application makes the measurement repeatable. By arranging the control unit, the signal processing unit and the power supply unit in the extraoral module, the system is miniaturized and wearable, and the patient can perform spot measurement or periodic continuous monitoring independently in daily life.

Description

Technical Field

[0001] This invention relates to the fields of oral medical engineering and biomedical sensing technology, and in particular to a wearable dental implant stability testing system and testing method. Background Technology

[0002] Dental implant restoration is a common treatment option for patients with missing teeth or edentulous teeth. Its long-term success rate highly depends on the formation of a stable and durable osseointegration between the implant and the surrounding alveolar bone. During osseointegration, implant stability exhibits a dynamic evolution. Accurately assessing implant stability at different stages is of significant clinical importance for determining osseointegration status, optimizing restoration timing, and preventing implant failure. Currently, commonly used methods for assessing implant stability in clinical practice include: insertion torque test, periodontology test, and resonance frequency analysis (RFA). Insertion torque test only reflects the initial mechanical stability at the moment of implantation and cannot be used for postoperative dynamic assessment. Periodontology tests measure damping time through mechanical tapping, but its results are easily affected by the tapping angle and position, resulting in poor repeatability. In contrast, RFA technology, due to its non-destructive, quantitative, and repeatable characteristics, has become the mainstream method for assessing implant stability. However, existing RFA technologies still have shortcomings. For example, most current systems use a handheld probe structure, requiring the operator to bring the probe tip close to the implant abutment in the patient's mouth for stimulation and testing. Due to the lack of a stable spatial positioning mechanism, the relative position, angle, and distance between the probe and the implant are difficult to maintain precisely during multiple measurements, leading to human error and dispersion in the measurement results. This is detrimental to the comparison and trend judgment of osseointegration status. Existing RFA devices are mainly used for single-point measurements, requiring the operator to hold the device and complete each measurement individually. This is unsuitable for monitoring stability changes in patients' daily oral environments and fails to reflect the dynamic evolution of implant stability during osseointegration. Because the excitation, acquisition, and signal processing modules are all integrated into the handheld probe, existing systems struggle to achieve miniaturization, low power consumption, and high comfort within the limited space of the oral cavity. Patients cannot independently complete the tests during daily activities, limiting the development towards wearable and patient-operated applications. Summary of the Invention

[0003] This invention provides a wearable dental implant stability testing system and method to address the shortcomings of existing RFA technology, which uses handheld probes, resulting in poor measurement repeatability, single-point measurement only with limited continuous monitoring, and high integration difficulty, making it difficult to achieve wearability.

[0004] This invention provides a wearable dental implant stability testing system, comprising: Intraoral components, And an extraoral module connected to the intraoral component; in, The intraoral component includes a positioning unit for positioning the intraoral component in a fixed position relative to the implant within the oral cavity; an excitation unit disposed on the positioning unit for generating an excitation field; a response element for mechanically coupling with the implant and generating a mechanical response under the action of the excitation field to drive the implant to vibrate; and a detection unit for detecting the magnetic field change caused by the mechanical response and outputting a response signal. The extraoral module is worn outside the patient's body and includes: a control unit for controlling the excitation unit to generate an excitation field; a signal processing unit for acquiring the response signal output by the detection unit and extracting feature parameters related to the stability of the implant; constructing a osseointegration state vector based on the feature parameters; and evaluating the stability of the implant based on the osseointegration state vector.

[0005] According to the wearable dental implant stability testing system provided by the present invention, the positioning unit is a removable fixing clip that can be detachably fixed to the tooth adjacent to the implant.

[0006] According to the wearable dental implant stability detection system provided by the present invention, the excitation unit is an excitation coil, and the control unit generates transient current pulses by driving the excitation coil to form the excitation field.

[0007] According to the wearable dental implant stability detection system provided by the present invention, the detection unit includes at least two magnetic sensing units, which are arranged differentially to suppress common-mode external magnetic interference and to enhance the differential-mode magnetic signals caused by the mechanical response by superimposing each other.

[0008] According to the wearable dental implant stability detection system provided by the present invention, the intraoral component includes multiple detection units, which are arranged at different positions of the positioning unit to acquire response data of the implant in multiple directions during vibration.

[0009] According to the wearable dental implant stability detection system provided by the present invention, the intraoral component includes at least one excitation unit, and the control unit is used to selectively drive each excitation unit in a preset sequence to obtain multi-directional resonance characteristic parameters.

[0010] According to the wearable dental implant stability testing system provided by the present invention, the extraoral module further includes a power supply unit for supplying power to the extraoral module and the intraoral components.

[0011] According to the wearable dental implant stability testing system provided by the present invention, the extraoral module is configured to be worn behind the patient's ear or on the neck; the intraoral component and the extraoral module are connected by a flexible wire.

[0012] This invention provides a wearable method for detecting the stability of dental implants, applicable to the aforementioned wearable dental implant stability detection system, comprising: The control unit of the extraoral module controls the excitation unit of the intraoral component to generate an excitation field; the excitation field acts on the response element that is mechanically coupled to the implant, causing the response element to generate a mechanical response to drive the implant to vibrate; The detection unit of the intraoral component detects the change in magnetic field caused by the mechanical response and outputs a corresponding response signal; The signal processing unit of the extraoral module collects and analyzes the response signal to extract characteristic parameters related to the stability of the implant. Osteointegration state vector is constructed based on the aforementioned feature parameters, and implant stability is evaluated based on the osteointegration state vector.

[0013] The wearable dental implant stability testing method provided by the present invention further includes: The implant stability evaluation index calculated in real time is compared with a preset threshold. When the evaluation index is lower than the threshold or the trend is abnormal, a prompt message is sent to the patient or doctor.

[0014] This invention provides a wearable dental implant stability testing system and method. The system includes an intraoral component and an extraoral module connected to the intraoral component. The intraoral component includes a positioning unit for positioning the intraoral component in a fixed position relative to the implant within the oral cavity; an excitation unit disposed on the positioning unit for generating an excitation field; a response element for mechanical coupling with the implant, generating a mechanical response under the excitation field to drive implant vibration; and a detection unit for detecting magnetic field changes caused by the mechanical response and outputting a response signal. The extraoral module is worn outside the patient's body and includes a control unit for controlling the excitation unit to generate the excitation field; and a signal processing unit for acquiring and analyzing the response signal output by the detection unit. This invention improves measurement repeatability by maintaining a fixed spatial geometric relationship between the excitation unit, detection unit, and implant through the positioning unit of the intraoral component. By placing the control unit and signal processing unit in the extraoral module, the system is miniaturized and wearable, supporting patients to perform daily point measurements or periodic continuous monitoring. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a functional structure diagram of the wearable dental implant stability testing system provided in this embodiment of the invention; Figure 2 This is a schematic diagram of the structure of the intraoral detection component provided in an embodiment of the present invention; Figure 3 This is a top view of the arrangement of the excitation coil and magnetic sensing unit provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the intraoral component being worn according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the wearing of the extraoral module provided in an embodiment of the present invention; Figure 6 This is a flowchart of a method for testing the stability of wearable dental implants provided in an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0018] Figure 1 This is a functional structure diagram of the wearable dental implant stability testing system provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the wearable dental implant stability testing system provided in this embodiment of the invention includes: Intraoral components, And an extraoral module connected to the intraoral component; in, The intraoral component includes a positioning unit for positioning the intraoral component in a fixed position relative to the implant within the oral cavity; an excitation unit disposed on the positioning unit for generating an excitation field; a response element for mechanically coupling with the implant and generating a mechanical response under the action of the excitation field to drive the implant to vibrate; and a detection unit for detecting the magnetic field change caused by the mechanical response and outputting a response signal. The extraoral module is worn outside the patient's body and includes: a control unit for controlling the excitation unit to generate an excitation field; a signal processing unit for acquiring the response signal output by the detection unit and extracting feature parameters related to the stability of the implant; constructing a osseointegration state vector based on the feature parameters; and evaluating the stability of the implant based on the osseointegration state vector.

[0019] In this embodiment of the invention, the excitation unit, detection unit, and positioning unit are located in the intraoral component, while the power supply unit, control unit, and signal processing unit are located in the externally wearable module. This functional separation architecture allows for miniaturization and lightweight design of the intraoral component, enabling comfortable wear by the patient; the external module can accommodate a large-capacity battery and complex processing circuitry, supporting extended operation and real-time signal analysis.

[0020] In this embodiment of the invention, an extraoral handheld device is also included. The extraoral handheld device receives implant stability evaluation indicators and historical test data through an APP and displays them visually. At the same time, it reminds the patient or doctor of the current osseointegration status at regular or irregular intervals.

[0021] For example, the handheld extraoral device receives the test results sent by the extraoral module via Bluetooth Low Energy, including the peak value of each measurement, oscillation frequency, damping coefficient, and measurement timestamp. The app displays the trend of oscillation parameters over time in the form of a line graph, and marks the normal fluctuation range. The app performs intelligent analysis, and when the decrease in three consecutive measurement results exceeds a preset threshold, or when a single measurement result is lower than a preset absolute threshold, it automatically generates a prompt message and reminds the patient to have a follow-up visit via notification bar message or SMS. At the same time, the app allows doctors to remotely view the patient's test data to assist in clinical decision-making.

[0022] Traditional RFA (Radio Frequency Amplification) testing methods often employ handheld probes. During multiple measurements, it's difficult to maintain consistent relative position, orientation, and distance between the probe and the implant, leading to errors and variability in the measurement results. RFA devices are primarily for single-point measurements and are unsuitable for monitoring stability changes in patients' daily lives, failing to reflect the dynamic evolution of implant stability. Induction coils are only sensitive to the rate of change of magnetic flux; their output signal is related to the speed of magnetic field change. Therefore, when the signal amplitude is small or the vibration gradually decays, the detection sensitivity significantly decreases, making it difficult to stably monitor low-frequency, weak-amplitude, or slowly decaying vibration processes. Typically, the excitation, acquisition, and signal processing modules are integrated into the handheld probe, which hinders miniaturization, low power consumption, and high comfort design within the limited space of the oral cavity, limiting the development of wearable applications.

[0023] The wearable dental implant stability detection system provided in this invention includes an intraoral component and an extraoral module connected to the intraoral component. The intraoral component includes a positioning unit for positioning the intraoral component in a fixed position relative to the implant within the oral cavity; an excitation unit disposed on the positioning unit for generating an excitation field; a response element for mechanically coupling with the implant and generating a mechanical response under the excitation field to drive the implant to vibrate; and a detection unit for detecting changes in the magnetic field caused by the mechanical response and outputting a response signal. The extraoral module is worn outside the patient's body and includes a control unit for controlling the excitation unit to generate the excitation field; and a signal processing unit for acquiring and analyzing the response signal output by the detection unit. This invention improves measurement repeatability by maintaining a fixed spatial geometric relationship between the excitation unit, detection unit, and implant through the positioning unit of the intraoral component. By placing the control unit and signal processing unit in the extraoral module, the system is miniaturized and wearable, supporting daily self-monitoring of spot measurements or periodic continuous monitoring by the patient.

[0024] Based on any of the above embodiments, the signal processing unit of the extraoral module acquires and analyzes the response signal to extract feature parameters related to the implant stability; extracts feature parameters related to the implant stability; constructs a osseointegration state vector based on the feature parameters; and evaluates the implant stability based on the osseointegration state vector.

[0025] The osseointegration state vector Z This includes, but is not limited to, parameters such as vibration amplitude, vibration frequency, and damping ratio.

[0026] The specific principle is as follows: During actual measurement, since the magnetic components, abutment, and repair structure are fixed, when the magnet causes the implant to vibrate under the action of the excitation source, the differential magnetic sensing unit will detect the changing magnetic field signal as follows: in, This is due to the weak magnetic field signal caused by the movement of the implant. , These are magnetic field signals measured at different times. Because the sensitive unit adopts a differential configuration, it can cancel out the influence of the geomagnetic field and the static magnetic field. With implant displacement x The relationship between (t) can be expressed as: After calibration, the two can be expressed as a direct proportional relationship.

[0027] Under external excitation, the implant-bone interface system can be equivalent to a second-order damped free vibration model: in, m This indicates the equivalent mass of the rigid body formed by the implant healing abutment and magnetic unit. c Indicates the damping coefficient, k Indicates the equivalent interface stiffness. x This represents micro-displacement. Under underdamped conditions, the implant displacement... x ( t This can be represented as: in, Indicates the undamped natural angular frequency. Indicates the angular frequency of the damped oscillation. Indicates the damping ratio. Initial phase: Therefore, through the detection unit The collected results allow us to obtain the free decay signal of the implant after stimulation. Using the peak-logarithmic decay method, parameters such as the oscillation peak value and damping ratio can be obtained. By performing a Fourier transform on the collected signal, its oscillation frequency can be analyzed. Based on this, further analysis of the trends in oscillation frequency, damping ratio, and quality factors over time allows for a comprehensive assessment of implant stability.

[0028] Based on any of the above embodiments, such as Figure 2 As shown, the positioning unit is a removable fixation clip that can be detachably fixed to the tooth adjacent to the implant. In some embodiments of the present invention, the positioning unit is fixed between the teeth adjacent to the location of the implant healing abutment.

[0029] In this embodiment of the invention, the spatial geometric relationship between the excitation unit, the detection unit and the implant is fixed by the positioning unit, which ensures that key parameters such as excitation direction and detection distance remain consistent in different measurement cycles, thereby reducing measurement errors and making the measurement repeatable.

[0030] In this embodiment of the invention, the excitation unit is an excitation coil, and the control unit generates transient current pulses by driving the excitation coil to form the excitation field.

[0031] In this embodiment of the invention, the control unit drives the excitation unit to generate a short-time current pulse, the duration of which is, for example, tens of microseconds to several milliseconds, to form a transient excitation field. Subsequently, the excitation unit stops working, and the detection unit continues to pick up the magnetic field signal caused by the vibration of the response element until the signal is lower than the resolution of the detection unit.

[0032] The intraoral component includes at least one excitation unit, and the control unit is used to selectively drive each excitation unit in a preset sequence to obtain multi-directional resonance characteristic parameters.

[0033] In this embodiment of the invention, in addition to the tip of the implant, excitation coils can also be set on the labial or lingual side. By constructing two sets of coils with different spatial orientations, magnetic fields can be generated in different directions. In use, each coil is selectively driven according to a preset sequence to obtain multi-directional oscillation characteristic parameters.

[0034] In this embodiment of the invention, a responsive element is disposed at the inner top or outer top of the implant healing abutment. This responsive element is stably combined with the healing abutment and is used to achieve weak vibration when excited by a magnetic field. The responsive element is used to collect the magnetic field change signal caused by the vibration; the signal acquisition and processing unit analyzes the collected resonance signal and damping attenuation process signal, and analyzes the magnetic field change signal. The detection unit includes at least two magnetic sensing units, which are arranged differentially to suppress common-mode external magnetic interference and to enhance the differential-mode magnetic signals caused by the mechanical response by superimposing each other.

[0035] The intraoral component includes multiple detection units, which are arranged at different positions of the positioning unit to acquire response data of the implant in multiple directions during vibration.

[0036] The excitation coil and magnetic sensing unit are arranged as follows: Figure 3 As shown, by arranging magnetic sensing units at different positions within the clamp or denture cavity, data from multiple directions during implant-coordinated magnet vibration is acquired. In this embodiment, the abutment magnet is designed with axial or radial magnetization to achieve different magnet structures, making the system more sensitive to vibrations in different directions and enabling the encoding of directional information. This embodiment uses solid-state magnetic sensing units such as magnetic tunnel junctions, anisotropic magnetoresistance, or giant magnetoresistance to replace traditional induction coils. Compared to induction coils, magnetic sensing units can directly respond to static and low-frequency magnetic fields and still have high sensitivity to weak signals in the later stages of vibration decay. Arranging at least two magnetic sensing units differentially allows external common-mode magnetic interference to cancel each other out, while the differential-mode signals caused by the vibration of the response element are superimposed and enhanced, thereby achieving high signal-to-noise ratio detection in complex oral environments.

[0037] The intraoral component of the wearable implant stability detection system provided in this embodiment of the invention is shown in the figure below. Figure 4 As shown, a magnetic sensing element is disposed within the clamping structure and maintains a fixed relative position with the magnet, used to detect changes in the magnetic field during vibration. The magnetic sensing element preferably employs a differential structure to suppress external magnetic interference.

[0038] Based on any of the above embodiments, the external module further includes a power supply unit for supplying power to the external module and the internal components.

[0039] The extraoral module also includes a wireless communication unit: transmitting system status and information collected by the magnetic sensing unit to a mobile phone or computer platform for doctors to view and analyze.

[0040] In this embodiment of the invention, the power supply unit provides power to the excitation coil, the excitation control unit, the magnetic sensing unit, and the signal processing and wireless communication unit.

[0041] The wearing diagram of the extraoral module of the wearable implant stability detection system provided in this embodiment of the invention is shown below. Figure 5 As shown.

[0042] The extraoral module is configured to be worn behind the patient's ear or on the neck; the intraoral component is connected to the extraoral module via a flexible wire.

[0043] This invention provides a hardware foundation for real-time measurement of implant stability by constructing a stable magnetomechanical coupling measurement structure intraorally and setting up power supply and signal processing units in the extraoral module, thereby allowing for personalized adjustment of the repair process based on the patient's bone integration status.

[0044] Based on any of the above embodiments, the wearable implant stability testing system provided by the present invention includes a small magnet disposed inside the healing abutment, the magnet being encapsulated by an inert material to meet oral use requirements.

[0045] The clamp structure fits into the adjacent teeth on the left and right sides of the implant, thus forming a stable spatial positioning relationship within the mouth. During actual testing, the patient simply wears the clamp and operates it according to the instructions on a mobile app to test the stability of the implant-osseointegration.

[0046] The excitation coil is located inside the clamping structure, with its plane arranged opposite to the magnet. When a short-time current pulse is applied to the excitation coil, the magnet vibrates slightly under the influence of the magnetic field, thus reflecting the degree of bonding between the implant and bone interface system.

[0047] The positioning unit can be equipped with one or more sets of excitation coils. The coils can be positioned on the occlusal surface, or on the buccal, lingual, or adjacent tooth surfaces of the implant. Taking three excitation coils on the occlusal, buccal, and adjacent tooth surfaces as an example, after calibration, the three coils can generate an orthogonal three-dimensional magnetic field in a local space. The control unit drives each set of coils sequentially according to a preset sequence: first, the buccal coil is driven, and the response signal is collected and then stopped; after a 5-millisecond interval, the adjacent tooth surface coil is driven; then, after another 5-millisecond interval, the occlusal surface coil is driven. The signal processing unit calculates the ossification frequency and damping coefficient in each of the three directions, forming a three-dimensional feature vector. This feature vector can be used to identify differences in the mechanical properties of the implant-bone interface in different directions, providing a basis for assessing the non-uniformity of osseointegration.

[0048] The extraoral module is positioned behind the patient's ear and integrates a battery, excitation control circuit, signal acquisition circuit, and processor. The processor performs time-domain and frequency-domain analysis on the detected signal, extracts parameters such as vibration amplitude, vibration frequency, and damping factor, and transmits the results to an external terminal via wireless communication.

[0049] In practical applications, measurements can be taken at specific points, with each measurement lasting from tens of milliseconds to several seconds, without affecting the patient's normal life and diet.

[0050] The wearable dental implant stability testing system provided in this invention significantly reduces measurement position and angle errors by fixing the measurement geometry using a bridging positioning clamp between adjacent teeth. The power supply and signal processing unit is located in the extraoral module, enabling point or periodic measurements. The magnetic sensing unit can employ sensors such as magnetic tunnel junctions, anisotropic magnetoresistive sensors, or giant magnetoresistive sensors, resulting in high detection sensitivity. The system structure provides a hardware foundation for the subsequent introduction of long-term stability trend analysis and intelligent diagnostic algorithms. Except for the clamps or dentures, which need to be customized according to the patient's actual situation, the intraoral and extraoral components, including the excitation coil and magnetic sensing unit, can be reused after disinfection, resulting in low overall cost.

[0051] The following describes the wearable dental implant stability testing method provided by the present invention. The wearable dental implant stability testing method described below can be referred to in correspondence with the wearable dental implant stability testing system described above.

[0052] Figure 6 The flowchart of the wearable dental implant stability testing method provided in the embodiments of the present invention is as follows: Figure 6 As shown, the wearable dental implant stability testing method provided in this embodiment of the invention includes: Step 601: The excitation unit of the intraoral component is controlled by the control unit of the extraoral module to generate an excitation field; the excitation field acts on the response element that is mechanically coupled to the implant, causing the response element to generate a mechanical response to drive the implant to vibrate; Step 602: The detection unit of the intraoral component detects the change in magnetic field caused by the mechanical response and outputs a corresponding response signal; Step 603: Collect and analyze the response signal through the signal processing unit of the extraoral module, and extract characteristic parameters related to the stability of the implant; Step 604: Extract feature parameters related to the stability of the implant; construct a osseointegration state vector based on the feature parameters; and evaluate the stability of the implant based on the osseointegration state vector.

[0053] In this embodiment of the invention, the wearable dental implant stability testing method further includes: The implant stability evaluation index calculated in real time is compared with a preset threshold. When the evaluation index is lower than the threshold or the trend is abnormal, a prompt message is sent to the patient or doctor.

[0054] Based on any of the above embodiments, the wearable dental implant stability testing method provided by the present invention specifically includes: (1) The excitation control unit drives the excitation coil to generate a transient magnetic field; (2) The magnetic element generates force or torque under the action of transient magnetic field, thereby stimulating the implant-bone interface system to vibrate slightly; (3) The magnetic sensing unit detects the magnetic field change signal caused by vibration; (4) The signal acquisition and processing unit acquires the damping attenuation process signal acquired by the magnetic sensing unit and analyzes the above signal; (5) The implant stability evaluation index is calculated or mapped based on the frequency parameters and damping attenuation process parameters.

[0055] (6) The excitation control unit generates a control signal to control the excitation drive unit to generate a transient current, which is applied to the excitation coil to generate a transient magnetic field.

[0056] (7) Under transient magnetic field excitation, the magnetic element causes the implant to vibrate slightly, reflecting the degree of implant-bone integration. The magnetic sensing unit detects the excited vibration of the magnetic element and the implant, converts the time-varying magnetic signal into an electrical signal, transmits it to the signal processing unit through preprocessing, analog-to-digital conversion and other units, and sends it to the external terminal through the wireless communication unit.

[0057] The wearable dental implant stability testing method provided in this invention significantly reduces measurement position and angle errors by fixing the measurement geometry using an adjacent tooth bridging positioning clamp. The power supply and signal processing unit is located in the extraoral module, enabling point or periodic measurements. The magnetic sensing unit can employ sensors such as magnetic tunnel junctions, anisotropic magnetoresistive sensors, or giant magnetoresistive sensors, resulting in high detection sensitivity. The system structure provides a hardware foundation for the subsequent introduction of long-term stability trend analysis and intelligent diagnostic algorithms. Except for the clamp or denture, which needs to be customized according to the patient's actual situation, the intraoral and extraoral components, including the excitation coil and magnetic sensing unit, can be reused after disinfection, resulting in low overall cost.

[0058] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0059] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of software products. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wearable dental implant stability testing system, characterized in that, include: Intraoral components, And an extraoral module connected to the intraoral component; in, The intraoral component includes a positioning unit for positioning the intraoral component in a fixed position relative to the implant within the oral cavity; an excitation unit disposed on the positioning unit for generating an excitation field; a response element for mechanically coupling with the implant and generating a mechanical response under the action of the excitation field to drive the implant to vibrate; and a detection unit for detecting the magnetic field change caused by the mechanical response and outputting a response signal. The extraoral module is worn outside the patient's body and includes: a control unit for controlling the excitation unit to generate an excitation field; a signal processing unit for acquiring the response signal output by the detection unit and extracting feature parameters related to the stability of the implant; constructing a osseointegration state vector based on the feature parameters; and evaluating the stability of the implant based on the osseointegration state vector.

2. The wearable dental implant stability testing system according to claim 1, characterized in that, The positioning unit is a removable fixation clamp that can be detachably fixed to the tooth adjacent to the implant.

3. The wearable dental implant stability testing system according to claim 1, characterized in that, The excitation unit is an excitation coil, and the control unit generates transient current pulses by driving the excitation coil to form the excitation field.

4. The wearable dental implant stability testing system according to claim 1, characterized in that, The detection unit includes at least two magnetic sensing units, which are arranged differentially to suppress common-mode external magnetic interference and to enhance the differential-mode magnetic signals caused by the mechanical response by superimposing each other.

5. The wearable dental implant stability testing system according to claim 1, characterized in that, The intraoral component includes multiple detection units, which are arranged at different positions of the positioning unit to acquire response data of the implant in multiple directions during vibration.

6. The wearable dental implant stability testing system according to claim 1, characterized in that, The intraoral component includes at least one excitation unit, and the control unit is used to selectively drive each excitation unit according to a preset sequence to obtain multi-directional resonance characteristic parameters.

7. The wearable dental implant stability testing system according to claim 1, characterized in that, The external module also includes a power supply unit for supplying power to the external module and the internal components.

8. The wearable dental implant stability testing system according to claim 1, characterized in that, The extraoral module is configured to be worn behind the patient's ear or on the neck; the intraoral component is connected to the extraoral module via a flexible wire.

9. A method for testing the stability of wearable dental implants, applicable to the wearable dental implant stability testing system according to any one of claims 1 to 8, characterized in that, include: The excitation unit of the intraoral component generates an excitation field by controlling the control unit of the extraoral module. The excitation field acts on the response element that is mechanically coupled to the implant, causing the response element to generate a mechanical response that drives the implant to vibrate. The detection unit of the intraoral component detects the change in magnetic field caused by the mechanical response and outputs a corresponding response signal; The signal processing unit of the extraoral module collects and analyzes the response signal to extract characteristic parameters related to the stability of the implant. Osteointegration state vector is constructed based on the aforementioned feature parameters, and implant stability is evaluated based on the osteointegration state vector.

10. The method for testing the stability of wearable dental implants according to claim 9, characterized in that, Also includes: The implant stability evaluation index calculated in real time is compared with a preset threshold. When the evaluation index is lower than the threshold or the trend is abnormal, a prompt message is sent to the patient or doctor.

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