Method and system for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis

Abstract

The present invention relates to the technical field of medical systems, and in particular to a method and system for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis. The present invention evaluates the connection effect based on the connection condition and connection shape of the connection position between the tooth and the filling, analyzes the connection difficulty of the connection position between the tooth and the filling based on the occlusion of the patient's teeth during treatment, and evaluates the therapeutic effect based on the connection effect evaluation results and connection difficulty analysis results of the corresponding teeth. By integrating three-dimensional tooth-filling connection morphology analysis, dynamic monitoring of occlusal mechanics, and multi-dimensional efficacy evaluation, the present invention significantly improves the accuracy and long-term success rate of restorative treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of medical systems, and in particular to a method and system for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis. Background Art

[0002] Non-carious cervical defects (NCCLs) refer to hard tissue defects (such as loss of enamel and dentin) occurring at the neck of the teeth. They are not caused by caries, but by pathological wear caused by mechanical, chemical or biomechanical factors. The formation of NCCLs is usually the result of multiple factors, mainly including: brushing wear: long-term use of hard-bristled toothbrushes or horizontal brushing leads to wear of cervical tooth tissue; acid erosion: acidic diet (such as carbonated beverages, citrus fruits), gastric acid reflux or occupational acid exposure leads to tooth demineralization; stress fatigue: abnormal bite force (such as bruxism, over-tight bite) causes stress concentration in the tooth neck, leading to microcracks and hard tissue exfoliation. When evaluating the efficacy of non-carious cervical defects, a non-carious cervical defect efficacy evaluation system is required.

[0003] Currently, occlusal force is a key factor affecting the lifespan of NCCL restorations. Abnormal occlusion (such as premature contact and excessive lateral force) can lead to stress concentration at the restoration-tooth interface, accelerating marginal crack formation and causing microleakage or dislodgement; and material fatigue: long-term dynamic occlusal loads can cause microcracks within the restoration, ultimately leading to structural failure. Existing occlusal analysis is often limited to static contact examinations (such as articulating paper markings), lacking precise quantification of dynamic occlusal force distribution and time-space load characteristics, making it difficult to predict the long-term mechanical behavior of the restoration.

[0004] The current deficiencies in the evaluation of the efficacy of NCCLs restorations include: reliance on subjectivity: the physician's experience dominates the evaluation, and there is a lack of objective quantitative indicators; data fragmentation: the occlusal data and the three-dimensional morphology of the restoration are not integrated and analyzed, making it impossible to establish a "force-morphology-prognosis" correlation model; and lack of dynamic monitoring: there is a lack of long-term tracking of occlusal changes after restoration (such as wear and changes in occlusal habits).

[0005] In order to solve these problems, the present application designs a non-carious cervical defect treatment efficacy evaluation system and method based on occlusal analysis. Summary of the Invention

[0006] In order to overcome the defects and shortcomings of the existing technology, the present invention provides a system and method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis, comprising the following steps:

[0009] S1. Obtain the tooth defect status during the treatment process, and at the same time obtain the patient's tooth occlusion status during the treatment process;

[0010] S2. obtaining the connection status and connection shape between the tooth and the filling based on the tooth defect status during the treatment process;

[0011] S3, evaluating the connection effect based on the connection status and shape of the connection position between the tooth and the filling;

[0012] S4. Analyze the difficulty of connecting the tooth to the filling based on the patient's occlusion during treatment;

[0013] S5. Evaluate the therapeutic effect based on the connection effect evaluation results and connection difficulty analysis results of the corresponding teeth;

[0014] S6. Provide treatment warnings based on efficacy evaluation results to remind medical staff.

[0015] In one implementation of the present invention, the tooth defect condition includes the defect condition of the tooth that needs to be damaged and the connection condition of the filling, which are obtained through three-dimensional reconstruction software; CBCT can provide detailed three-dimensional information of the teeth and surrounding tissues, which is suitable for obtaining the internal structure and damage condition of the teeth; the intraoral scanner can quickly obtain three-dimensional data of the tooth surface, and is more accurate in capturing the filling and tooth surface morphology. The patient's tooth occlusion during the treatment process includes the occlusal force conditions corresponding to each position of the tooth when the patient bites.

[0016] In one implementation of the present invention, obtaining the connection status and connection shape between the tooth and the filling in step S2 includes the following specific steps:

[0017] S21. Obtaining shape data of the connecting surface between the tooth and the filling, and thickness of the connection at each point on the tooth based on the defect of the damaged tooth and the connection of the filling, and storing the data;

[0018] S22. Simultaneously obtaining crack conditions at the connection between the tooth and the filling to assess the quality of the connection between the tooth and the filling, and storing the data. Obtaining thickness and crack data from the defect condition is achievable with three-dimensional software and is a conventional technical means in the art.

[0019] In one implementation of the present invention, the connection effect evaluation in step S3 includes the following specific steps:

[0020] S31. Obtain shape data of the connection surface between the tooth and the filling, obtain the connection thickness at each point on the tooth, and perform connection shape matching analysis based on the shape data of the connection surface between the tooth and the filling. The connection shape matching analysis method is: the similarity of the three-dimensional shapes of the two connection surfaces. The similarity calculation formula of the three-dimensional shapes of the connection surfaces can be: , where mc is the shape of the tooth connection surface, and mz is the shape of the filling connection surface. The formula means the image size of the shape intersection divided by the image size of the shape union. If the shape of the tooth connection surface is exactly the same as the shape of the filling connection surface, the similarity is 1;

[0021] S32. Obtain data on the distance between the tooth and the filling, the thickness of the filling, and the crack condition at the connection position at each connection position. The crack condition includes the length, width, and depth of the crack. The crack at the connection position will weaken the connection strength at the connection position. The larger the gap between the tooth and the filling, the more incomplete the connection at the connection position. At the same time, the thicker the filling in the corresponding area, the greater the mass, and the more likely it is to fall off due to incomplete connection. Therefore, the distance between the tooth and the filling, the thickness of the filling, and the crack condition data at each connection position are used to analyze the connection abnormality at each position. The connection abnormality calculation formula at the corresponding position is: , where s is the filling thickness, sz is the average filling thickness, w is the number of cracks, Vi is the volume of the i-th crack, Vm is the safe volume of the crack, L is the distance between the tooth and the filling, Lc is the safe value of the distance between the tooth and the filling, and exp() is the power of e. This formula is used to quantify the degree of connection abnormality at each connection position. It comprehensively considers the three key factors of filling thickness, crack condition, and distance between the tooth and the filling, and can more comprehensively evaluate the stability and reliability of the connection position. The higher the degree of connection abnormality, the more likely the connection position is to have problems, such as filling falling off. The ratio s / sz is used to measure the relative size of the filling thickness and the average thickness at that position. If s / s If z>1, it means that the filling at that location is thicker than the average thickness. The thicker the filling in the corresponding area, the greater its mass, and the more likely it is to fall off in the case of incomplete connection; if s / sz=1, the filling at that location is the same as the average thickness; if s / sz<1, the filling at that location is thinner than the average thickness. The distance between the above teeth and the filling is exponentially calculated with the natural constant e as the base. The exponential function has an amplifying effect. When the distance between the tooth and the filling exceeds the safety range by a small amount, the value increases relatively slowly; but when the degree of excess is large, the value will increase rapidly, highlighting the impact of the distance between the tooth and the filling on the abnormal connection. The safety value is set according to the historical experience of medical staff. Different filling materials have different performance characteristics.

[0022] In one implementation of the present invention, the connection difficulty analysis of the connection position between the tooth and the filling in step S4 includes the following specific contents:

[0023] S41, obtaining data on the occlusal force conditions at each connection position between the tooth and the filling when the patient bites, as well as the average daily occlusal frequency;

[0024] S42. Perform a connection difficulty analysis for the corresponding positions based on the occlusal force conditions at the connection positions between the corresponding teeth and the fillings when the corresponding patient bites and the average daily occlusal frequency data. The corresponding position connection difficulty analysis formula is: , where Hz is the average number of daily bites, fz is the occlusal force at the corresponding position, and fm is the safety value of the corresponding filling force. In dental restorations, connection difficulty analysis based on patient occlusal data (Hz, fz) and filling mechanical properties (fm) can quantitatively evaluate the long-term stability of the restoration.

[0025] In one implementation of the present invention, step S5 performs efficacy evaluation based on the connection effect evaluation result and connection difficulty analysis result of the corresponding teeth, including the following specific contents:

[0026] S51. Obtain the connection difficulty and the connection abnormality of the corresponding position. Calculate the connection effect abnormality of the corresponding position based on the product of the connection difficulty and the connection abnormality of the corresponding position. Average the connection effect abnormalities of all positions and simultaneously calculate the fluctuation of the connection effect abnormalities of all positions. The fluctuation is calculated as a variance or a standard deviation. Perform a weighted sum of the abnormal average and the abnormal fluctuation, and then calculate the inverse to obtain a medical assessment value for the corresponding tooth.

[0027] S52, obtaining a medical evaluation value of the corresponding tooth and performing weighted summation on the connection shape matching result to obtain a therapeutic effect evaluation value of the corresponding tooth;

[0028] S53. Compare the efficacy evaluation value of the corresponding tooth with the set efficacy evaluation threshold. If the efficacy evaluation value of the corresponding tooth is greater than or equal to the set efficacy evaluation threshold, it means that the efficacy has achieved the expected effect. If the efficacy evaluation value of the corresponding tooth is less than the set efficacy evaluation threshold, it means that the efficacy has not achieved the expected effect.

[0029] In one implementation of the present invention, step S6 includes the following specific contents:

[0030] If the judgment result obtained is that the therapeutic effect does not achieve the expected effect, a medical warning will be issued to the medical staff. If the judgment result obtained is that the therapeutic effect achieves the expected effect, no medical warning will be issued to the medical staff.

[0031] In a second aspect, the present invention further provides a system for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis, comprising:

[0032] Image acquisition module, used to obtain the tooth defect status during the treatment process, and also obtain the occlusion status of the patient's teeth during the treatment process;

[0033] The data acquisition module acquires the connection status and shape of the tooth and filling based on the tooth defect during the treatment process;

[0034] The connection effect evaluation module evaluates the connection effect based on the connection status and shape of the connection position between the tooth and the filling;

[0035] The connection difficulty analysis module analyzes the connection difficulty between the tooth and the filling based on the patient's tooth occlusion during treatment;

[0036] The efficacy evaluation module evaluates the efficacy of the connection based on the corresponding tooth connection effect evaluation results and connection difficulty analysis results;

[0037] The feedback module provides treatment warnings based on the efficacy evaluation results and reminds medical staff.

[0038] In a third aspect, the present invention provides an electronic device comprising: a processor and a memory, wherein the memory stores a computer program that can be called by the processor, and the processor executes a method for evaluating the efficacy of non-carious cervical defects based on occlusal analysis by calling the computer program stored in the memory.

[0039] In a fourth aspect, the present invention provides a computer-readable storage medium storing instructions, which, when executed on a computer, enables the computer to execute a method for evaluating the efficacy of non-carious cervical defects based on occlusal analysis.

[0040] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0041] The present invention obtains the connection status and connection shape of the tooth and the filling based on the tooth defect status during the treatment process, evaluates the connection effect based on the connection status and connection shape of the connection position of the tooth and the filling, analyzes the connection difficulty of the connection position of the tooth and the filling based on the occlusion of the patient's teeth during the treatment, and evaluates the efficacy based on the connection effect evaluation results and connection difficulty analysis results of the corresponding teeth. By integrating the three-dimensional connection morphology analysis of the tooth-filling, dynamic monitoring of occlusal mechanics and multi-dimensional efficacy evaluation, the accuracy and long-term success rate of restorative treatment are significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0043] Figure 1 Schematic diagram of the overall process of an embodiment of the method of the present invention;

[0044] Figure 2 Schematic diagram of the structure of the system embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] Example 1

[0049] like Figure 1 As shown, this embodiment provides a method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis, which specifically includes the following steps:

[0050] S1. Obtain the tooth defect status during the treatment process, and at the same time obtain the patient's tooth occlusion status during the treatment process;

[0051] In this embodiment, the tooth defect condition includes the defect condition of the tooth that needs to be damaged and the connection condition of the filling, which is obtained through three-dimensional reconstruction software. For example, common equipment used for tooth scanning includes oral cone beam CT, intraoral scanner, etc.; CBCT can provide detailed three-dimensional information of the teeth and surrounding tissues, which is suitable for obtaining the internal structure and damage condition of the teeth; the intraoral scanner can quickly obtain three-dimensional data of the tooth surface, and is more accurate in capturing the fillings and tooth surface morphology. During the treatment process, the patient's tooth occlusion condition includes the occlusal force condition of each position of the tooth when the patient bites. For example, the occlusal force condition of each position can be: The occlusal analyzer is a professional oral examination device, which usually uses sensor technology to measure parameters such as the occlusal contact time, bite force size and distribution of the teeth. The sensor can be installed on a special tooth pad or braces. When the patient bites, the sensor will record the tooth occlusion information in real time and transmit the data to the computer for analysis and processing;

[0052] S2. obtaining the connection status and connection shape between the tooth and the filling based on the tooth defect status during the treatment process;

[0053] In this embodiment, obtaining the connection status and connection shape between the tooth and the filling in step S2 includes the following specific steps:

[0054] S21. Obtaining shape data of the connecting surface between the tooth and the filling, and thickness of the connection at each point on the tooth based on the defect of the damaged tooth and the connection of the filling, and storing the data;

[0055] S22. Simultaneously obtaining crack conditions at the connection between the tooth and the filling to assess the quality of the connection between the tooth and the filling, and storing the data. Obtaining thickness and crack data from the defect condition is achievable with three-dimensional software and is a conventional technical means in the art.

[0056] S3, evaluating the connection effect based on the connection status and shape of the connection position between the tooth and the filling;

[0057] In this embodiment, the connection effect evaluation in step S3 includes the following specific steps:

[0058] S31. Obtain shape data of the connection surface between the tooth and the filling, obtain the connection thickness at each point on the tooth, and perform connection shape matching analysis based on the shape data of the connection surface between the tooth and the filling. The connection shape matching analysis method is: the similarity of the three-dimensional shapes of the two connection surfaces. The similarity calculation formula of the three-dimensional shapes of the connection surfaces can be: , where mc is the shape of the tooth connection surface, and mz is the shape of the filling connection surface. The formula means the image size of the shape intersection divided by the image size of the shape union. If the shape of the tooth connection surface is exactly the same as the shape of the filling connection surface, the similarity is 1;

[0059] S32. Obtain data on the distance between the tooth and the filling, the thickness of the filling, and the crack condition at the connection position at each connection position. The crack condition includes the length, width, and depth of the crack. The crack at the connection position will weaken the connection strength at the connection position. The larger the gap between the tooth and the filling, the more incomplete the connection at the connection position. At the same time, the thicker the filling in the corresponding area, the greater the mass, and the more likely it is to fall off due to incomplete connection. Therefore, the distance between the tooth and the filling, the thickness of the filling, and the crack condition data at each connection position are used to analyze the connection abnormality at each position. The connection abnormality calculation formula at the corresponding position is: , where s is the filling thickness, sz is the average filling thickness, w is the number of cracks, Vi is the volume of the i-th crack, Vm is the safe volume of the crack, L is the distance between the tooth and the filling, Lc is the safety value of the distance between the tooth and the filling, and exp() is the power of e. This formula is used to quantify the degree of connection abnormality at each connection position. It comprehensively considers the three key factors of filling thickness, crack condition, and distance between the tooth and the filling, and can more comprehensively evaluate the stability and reliability of the connection position. The higher the degree of connection abnormality, the more likely the connection position is to have problems, such as filling falling off. The ratio s / sz is used to measure the relative size of the filling thickness at that position to the average thickness. If s / sz>1, it means that the filling at that position is thicker than the average thickness. The thicker the filling in the corresponding area, the greater the mass, and the more likely it is to fall off in the case of incomplete connection; if s / sz=1, the filling at that position is the same as the average thickness; if s / sz<1, the filling at that position is thinner than the average thickness. The above-mentioned distance between the tooth and the filling is indexed with the natural constant e as the base. Numerical operations and exponential functions have an amplifying effect. When the distance between the tooth and the filling exceeds the safe range by a small amount, the value increases relatively slowly; however, when the degree of excess is large, the value increases rapidly, highlighting the impact of the distance between the tooth and the filling on the abnormal connection. The safe value is set based on the historical experience of medical staff. Different filling materials have different performance characteristics. For example, resin materials have good adhesion and marginal sealing properties, and the allowable distance between the tooth and the filling can be relatively small, generally 50-100 microns. Traditional materials such as silver-mercury alloy may have a slightly larger distance safety value due to their solidification shrinkage and other characteristics, about 100-200 microns. Teeth in different positions have different structures and functions, and the crack volumes they can withstand are also different. For example, front teeth are mainly used for cutting food and are relatively less stressed. Generally speaking, if the crack volume does not exceed 5%-10% of the tooth volume, the impact on the overall structure and function of the tooth may be relatively small. Posterior teeth bear the pressure of chewing and are more sensitive to cracks. The safe crack volume may need to be controlled within 3%-5% of the tooth volume.

[0060] S4. Analyze the difficulty of connecting the tooth to the filling based on the patient's occlusion during treatment;

[0061] In this embodiment, the connection difficulty analysis of the connection position between the tooth and the filling in step S4 includes the following specific contents:

[0062] S41, obtaining data on the occlusal force conditions at each connection position between the tooth and the filling when the patient bites, as well as the average daily occlusal frequency;

[0063] S42. Perform a connection difficulty analysis for the corresponding positions based on the occlusal force conditions at the connection positions between the corresponding teeth and the fillings when the corresponding patient bites and the average daily occlusal frequency data. The corresponding position connection difficulty analysis formula is: , where Hz is the average number of bites per day, fz is the bite force at the corresponding position, and fm is the force safety value of the corresponding filling. The range of the force safety value (fm) of the filling type is described;

[0064] Composite resin: 50-150MPa, low compressive strength, may fatigue and fracture under long-term stress, suitable for areas with low bite force (such as front teeth);

[0065] Silver-mercury alloy: 150-300 MPa, high compressive strength, but low elastic modulus, may fail due to repeated occlusal fatigue (commonly used on posterior teeth);

[0066] Metal crown (cobalt chromium): 500-900MPa, high strength, suitable for areas with high occlusal forces (such as molars), but overload should be avoided to prevent damage to the abutment teeth;

[0067] All-ceramic materials: 300-600 MPa, medium compressive strength, but high brittleness, requiring the avoidance of local stress concentration (e.g., zirconia ceramics offer superior performance). In dental restorations, connection difficulty analysis based on patient occlusal data (Hz, fz) and filling mechanical properties (fm) can quantitatively assess the long-term stability of restorations.

[0068] S5. Evaluate the therapeutic effect based on the connection effect evaluation results and connection difficulty analysis results of the corresponding teeth;

[0069] In this embodiment, step S5 performs efficacy evaluation based on the connection effect evaluation result and connection difficulty analysis result of the corresponding teeth, including the following specific contents:

[0070] S51. Obtain the connection difficulty and the connection abnormality of the corresponding position. Obtain the connection effect abnormality of the corresponding position based on the product of the connection difficulty and the connection abnormality of the corresponding position. Average the connection effect abnormalities of all positions and simultaneously calculate the fluctuation of the connection effect abnormalities of all positions. The fluctuation is calculated as variance or standard deviation. The weighted sum of the abnormal average and the abnormal fluctuation is taken, and the inverse is calculated to obtain the medical evaluation value of the corresponding tooth. It should be noted that in order to avoid the denominator being 0 when taking the inverse, a very small constant term can be added to the denominator. An exemplary medical evaluation value formula is: , where a is the average impact weight of the abnormality, ck is the average value of the connection effect, cp is the standard deviation of the connection effect, and r is a very small constant term. In this formula, ck measures the average level of the overall tooth connection abnormality. The larger the value, the more serious the overall abnormality. Abnormal fluctuation: measures whether the degree of abnormality in different positions is uniform. If the fluctuation is small, the abnormalities in each position are relatively consistent, and the problem may be evenly distributed. If the fluctuation is large, the abnormalities in some positions are particularly prominent, and there may be serious local problems. By adjusting the weight, the influence of overall abnormality and local fluctuation can be flexibly controlled. If you pay more attention to the overall abnormality, you can increase a.

[0071] S52, obtaining a medical evaluation value of the corresponding tooth and performing weighted summation on the connection shape matching result to obtain a therapeutic effect evaluation value of the corresponding tooth;

[0072] S53, comparing the therapeutic effect evaluation value of the corresponding tooth with a set therapeutic effect evaluation threshold; if the therapeutic effect evaluation value of the corresponding tooth is greater than or equal to the set therapeutic effect evaluation threshold, it means that the therapeutic effect has achieved the expected effect; if the therapeutic effect evaluation value of the corresponding tooth is less than the set therapeutic effect evaluation threshold, it means that the therapeutic effect has not achieved the expected effect;

[0073] S6. Provide treatment warnings based on efficacy evaluation results to remind medical staff;

[0074] In this embodiment, step S6 includes the following specific contents:

[0075] If the judgment result obtained is that the therapeutic effect does not achieve the expected effect, a medical warning will be issued to the medical staff. If the judgment result obtained is that the therapeutic effect achieves the expected effect, no medical warning will be issued to the medical staff.

[0076] It should be noted in this embodiment that the setting parameters in this embodiment (such as each weighted weight and the set efficacy evaluation threshold, etc.) are obtained by a person skilled in the art through experiments based on historical data. The set efficacy evaluation threshold here can be determined based on the retention time of historical personnel after tooth treatment. The retention time of different materials is different. For example, silver amalgam is 10-15 years, and all-ceramic material is 12-15 years. The middle number is taken to determine whether the historical personnel has maintained the restoration for the corresponding number of years. If the restoration has been maintained for the corresponding number of years, the judgment result that the efficacy has achieved the expected effect is taken. If the restoration has not been maintained for the corresponding number of years, the judgment result that the efficacy has not achieved the expected effect is taken. Therefore, a specific experimental method is exemplified as follows: obtaining historical patients' retention time. The tooth defect situation of the patient during the treatment process, and the occlusion situation of the patient's teeth during the treatment process are obtained, and substituted into each step of this embodiment to perform efficacy evaluation, and at the same time obtain the factual results of the judgment result of whether the efficacy has achieved the expected effect. Based on the factual results and the efficacy evaluation results, the fitting software is substituted for the iterative fitting of the data, and the setting parameter values ​​of this embodiment that meet the maximum judgment accuracy are output. The setting parameters of this embodiment are obtained and optimized through historical data and experiments, which can significantly improve the judgment accuracy and early warning effect of the system. First, by comparing historical data with actual results, the model can continuously adjust parameters to improve the accuracy of prediction, which is more reliable than setting parameters based on experience. The fitting software can be MATLAB software.

[0077] It should be noted that in this embodiment, this embodiment has the following benefits and advantages. The connection status and connection shape between the tooth and the filling are obtained based on the tooth defect status during the treatment process, the connection effect is evaluated based on the connection status and connection shape of the connection position of the tooth and the filling, the connection difficulty of the connection position of the tooth and the filling is analyzed based on the occlusion of the patient's teeth during the treatment process, and the efficacy is evaluated based on the connection effect evaluation results and connection difficulty analysis results of the corresponding teeth. By integrating the three-dimensional connection morphology analysis of the tooth-filling, dynamic monitoring of occlusal mechanics and multi-dimensional efficacy evaluation, the accuracy and long-term success rate of the restorative treatment are significantly improved.

[0078] Example 2

[0079] like Figure 2 As shown, this embodiment provides a non-carious cervical defect treatment efficacy evaluation system based on occlusal analysis, comprising: an image acquisition module for acquiring the tooth defect status during treatment and the occlusal status of the patient's teeth during treatment;

[0080] The data acquisition module acquires the connection status and shape of the tooth and filling based on the tooth defect during the treatment process;

[0081] The connection effect evaluation module evaluates the connection effect based on the connection status and shape of the connection position between the tooth and the filling;

[0082] The connection difficulty analysis module analyzes the connection difficulty between the tooth and the filling based on the patient's tooth occlusion during treatment;

[0083] The efficacy evaluation module evaluates the efficacy of the connection based on the corresponding tooth connection effect evaluation results and connection difficulty analysis results;

[0084] The feedback module provides treatment warnings based on the efficacy evaluation results and reminds medical staff.

[0085] Example 3

[0086] An electronic device according to an embodiment of the present invention includes a processor and a memory. The memory stores a computer program that can be called by the processor. The processor executes a method for evaluating the therapeutic effect of non-caries cervical defects based on occlusal analysis by calling the computer program stored in the memory. It should be noted that all computer programs of the method for evaluating the therapeutic effect of non-caries cervical defects based on occlusal analysis are implemented in the C language.

[0087] Example 4

[0088] This embodiment provides a computer-readable storage medium having a rewritable computer program stored thereon;

[0089] When the computer program is run on a computer device, the computer device is caused to execute the above-mentioned method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis.

[0090] The above embodiments can be implemented in whole or in part via software, hardware, firmware, or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. A computer program product comprises one or more computer instructions or computer programs. When loaded or executed on a computer, the processes or functions according to the embodiments of the present invention are fully or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. Computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via a wired network or / and a wireless network. A computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server or data center that contains a collection of one or more available media. Available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media. Semiconductor media can be solid-state drives.

[0091] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0092] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0093] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only one type. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0094] Units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0095] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0096] Throughout this specification, references to terms such as "one embodiment," "example," and "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0097] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis, characterized in that: The steps include: S1. Obtain the tooth defect status during the treatment process, and at the same time obtain the patient's tooth occlusion status during the treatment process; S2. obtaining the connection status and connection shape between the tooth and the filling based on the tooth defect status during the treatment process; The specific steps include: By analyzing the defect of the damaged tooth and the filling condition of the filling, the shape data of the connecting surface between the tooth and the filling, the thickness of the connection at each point on the tooth are obtained and stored; At the same time, the crack conditions between the tooth and the filling are obtained to evaluate the quality of the connection between the corresponding tooth and the filling and store them; S3, evaluating the connection effect based on the connection status and shape of the connection position between the tooth and the filling; The specific steps include: Obtaining shape data of the interface between the tooth and the filling, obtaining the thickness of the connection at each point on the tooth, and performing a connection shape matching analysis based on the shape data of the interface between the tooth and the filling. The connection shape matching analysis method is: the similarity of the three-dimensional shapes of the two connection surfaces; Obtaining data on the distance between the tooth and the filling, the thickness of the filling, and crack conditions at the connection locations at each connection location, wherein the crack conditions include the length, width, and depth of the cracks, and analyzing the connection abnormalities at each location based on the data on the distance between the tooth and the filling, the thickness of the filling, and the crack conditions at the connection locations; S4. Analyze the difficulty of connecting the tooth to the filling based on the patient's occlusion during treatment. This includes the following: Obtain the occlusal force data at each position where the tooth and filling are connected when the patient bites, as well as the average daily occlusal frequency data; The difficulty of connection at the corresponding position is analyzed based on the occlusal force conditions at each position of the connection between the tooth and the filling when the patient bites and the average daily occlusion frequency data; S5. Evaluate the therapeutic effect based on the connection effect evaluation results and connection difficulty analysis results of the corresponding teeth; S6. Provide treatment warnings based on efficacy evaluation results to remind medical staff.

2. The method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis according to claim 1, characterized in that: The efficacy evaluation based on the connection effect evaluation results and connection difficulty analysis results of the corresponding teeth includes the following specific contents: Obtaining the connection difficulty and the connection abnormality of the corresponding position, obtaining the connection effect abnormality of the corresponding position based on the product of the connection difficulty and the connection abnormality of the corresponding position, averaging the connection effect abnormalities of all positions, and simultaneously calculating the fluctuation of the connection effect abnormalities of all positions, the fluctuation being calculated in the form of variance or standard deviation, performing a weighted sum of the abnormal average and the abnormal fluctuation, and then calculating the inverse to obtain the medical assessment value of the corresponding tooth; Obtaining the medical evaluation value of the corresponding tooth and the connection shape matching result, performing weighted summation to obtain the efficacy evaluation value of the corresponding tooth; By comparing the efficacy evaluation value of the corresponding tooth with the set efficacy evaluation threshold, if the efficacy evaluation value of the corresponding tooth is greater than or equal to the set efficacy evaluation threshold, it means that the efficacy has achieved the expected effect; if the efficacy evaluation value of the corresponding tooth is less than the set efficacy evaluation threshold, it means that the efficacy has not achieved the expected effect.

3. The method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis according to claim 2, characterized in that: The S6 includes the following specific contents: If the judgment result obtained is that the therapeutic effect does not achieve the expected effect, a medical warning will be issued to the medical staff. If the judgment result obtained is that the therapeutic effect achieves the expected effect, no medical warning will be issued to the medical staff.

4. The method for evaluating the therapeutic effect of non-carious cervical defects based on occlusal analysis according to claim 3, characterized in that: The calculation formula for the connection anomaly at the corresponding position is: , where s is the filling thickness, sz is the average filling thickness, w is the number of cracks, Vi is the volume of the i-th crack, Vm is the safe volume of the crack, L is the distance between the tooth and the filling, Lc is the safe value of the distance between the tooth and the filling, and exp() is the power of e.

5. A system for evaluating the therapeutic effect of non-caries cervical defect based on occlusal analysis, which is implemented based on the method for evaluating the therapeutic effect of non-caries cervical defect based on occlusal analysis according to any one of claims 1 to 4, and is characterized in that: The system comprises: Image acquisition module, used to obtain the tooth defect status during the treatment process, and also obtain the occlusion status of the patient's teeth during the treatment process; The data acquisition module acquires the connection status and shape of the tooth and filling based on the tooth defect during the treatment process; The connection effect evaluation module evaluates the connection effect based on the connection status and shape of the connection position between the tooth and the filling; The connection difficulty analysis module analyzes the connection difficulty between the tooth and the filling based on the patient's tooth occlusion during treatment; The efficacy evaluation module evaluates the efficacy of the connection based on the corresponding tooth connection effect evaluation results and connection difficulty analysis results; The feedback module provides treatment warnings based on the efficacy evaluation results and reminds medical staff.

6. An electronic device comprising: A processor and a memory, wherein the memory stores a computer program that can be called by the processor; characterized in that the processor executes the method for evaluating the efficacy of non-carious cervical defects based on occlusal analysis as described in any one of claims 1 to 4 by calling the computer program stored in the memory.

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