Non-caries neck defect curative effect evaluation method and system based on occlusion analysis

Abstract

The invention relates to the technical field of medical systems, in particular to a non-caries neck defect curative effect evaluation method and system based on occlusion analysis. The connection difficulty analysis of the connection position of the teeth and the filler is performed based on the occlusion condition of the teeth of the patient in the treatment process, and the curative effect evaluation is performed based on the connection effect evaluation result of the corresponding teeth and the connection difficulty analysis result. By integrating tooth-filler three-dimensional connection morphology analysis, occlusion mechanical dynamic monitoring and multi-dimensional curative effect evaluation, the accuracy and long-term success rate of repair treatment are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical systems, and particularly to a method and system for evaluating the curative effect of non-carious cervical lesions based on bite analysis. Background Art

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

[0003] Currently, the occlusal force is a key factor affecting the lifespan of NCCLs restorations. Abnormal occlusion (such as premature contact, excessive lateral force) may lead to: stress concentration at the restoration-tooth interface: accelerating the formation of marginal cracks, causing microleakage or detachment; material fatigue: long-term dynamic occlusal load generates microcracks inside the restoration, ultimately leading to structural failure. In the prior art, bite analysis is mostly limited to static contact examination (such as bite paper marking), lacking precise quantification of the dynamic occlusal force distribution and time-space load characteristics, and it is difficult to predict the long-term mechanical behavior of the restoration.

[0004] The current deficiencies in the evaluation of NCCLs repair curative effects include: subjective dependence: the evaluation is dominated by doctors' experience, lacking objective quantification indicators; data fragmentation: the occlusal data and the three-dimensional shape of the restoration are not integrated and analyzed, and it is impossible to establish an association model of "force - shape - prognosis"; lack of dynamic monitoring: lack of long-term tracking of post-repair occlusal changes (such as abrasion, change of occlusal habits).

[0005] To solve these problems, the present application designs a non-carious cervical lesion curative effect evaluation system and method based on bite analysis. Summary of the Invention

[0006] In order to overcome the defects and deficiencies existing in the prior art, the present invention provides a non-carious cervical lesion curative effect evaluation system and method based on bite analysis.

[0007] To achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a method for evaluating the curative effect of non-carious cervical lesions based on bite analysis, including the following steps: S1. Obtain the tooth defect situation during the treatment process, and at the same time obtain the occlusion situation of the patient's teeth during the treatment process; S2. Based on the tooth defect situation during the treatment process, obtain the connection situation and connection shape between the tooth and the filling material; S3. Evaluate the connection effect based on the connection situation and connection shape at the connection position between the tooth and the filling material; S4. Analyze the connection difficulty at the connection position between the tooth and the filling material based on the occlusion situation of the patient's teeth during the treatment process; S5. Evaluate the treatment effect based on the connection effect evaluation result and connection difficulty analysis result of the corresponding tooth; S6. Give a treatment warning based on the treatment effect evaluation result to remind medical staff.

[0008] In an implementation manner of the present invention, the tooth defect situation includes the defect situation of the damaged tooth and the connection situation of the filling material, which is obtained through three-dimensional reconstruction software; CBCT can provide detailed three-dimensional information of the tooth and surrounding tissues, and is suitable for obtaining the internal structure and damage situation of the tooth; the intraoral scanner can quickly obtain the three-dimensional data of the tooth surface, and is relatively accurate in capturing the filling material and the tooth surface morphology. The occlusion situation of the patient's teeth during the treatment process includes the occlusion force situation at each position of the corresponding tooth when the patient occludes.

[0009] In an implementation manner of the present invention, in step S2, obtaining the connection situation and connection shape between the tooth and the filling material includes the following specific steps: S21. Through the defect situation of the damaged tooth and the connection situation of the filling material, obtain the shape data of the connection surface between the tooth and the filling material, obtain the connection thickness situation of each point connected to the tooth, and store them; S22. At the same time, obtain the crack situation of the connection between the tooth and the filling material to evaluate the connection quality between the corresponding tooth and the filling material, and store it. Obtaining the thickness and crack data from the defect situation can be achieved by three-dimensional software, which is a conventional technical means in the art; In an implementation manner of the present invention, the connection effect evaluation in step S3 includes the following specific steps: S31. Obtain the shape data of the connection surface between the tooth and the filling material, obtain the connection thickness situation of each point connected to the tooth, and perform connection shape matching analysis based on the shape data of the connection surface between the tooth and the filling material. Among them, the connection shape matching analysis method is: the similarity degree of the three-dimensional shapes of the two connection surfaces. Among them, the calculation formula for the similarity degree 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 meaning of the formula is 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 degree is taken as 1; S32. Obtain the data of the distance between the tooth and the filling, the thickness of the filling, and the crack condition at each connection position. Among them, 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 distance between the tooth and the filling, the more incomplete the connection at the connection position. At the same time, the thicker the filling thickness in the corresponding area, the greater the mass, and the more likely it is to fall off under the influence of incomplete connection. Therefore, here, the connection abnormality at each position is analyzed through the data of the distance between the tooth and the filling, the thickness of the filling, and the crack condition at each connection position. The calculation formula for the connection abnormality 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 exponential power of e. This formula is used to quantify the connection abnormality degree at each connection position, comprehensively considering three key factors: the filling thickness, the crack condition, and the distance between the tooth and the filling, and can more comprehensively evaluate the stability and reliability of the connection position. The higher the connection abnormality degree, the more likely problems such as filling detachment will occur at this connection position. The ratio s / sz is used to measure the relative size of the filling thickness at this position to the average thickness. If s / sz > 1, it means that the filling at this position is thicker than the average thickness, and the thicker the filling in the corresponding area, the greater the mass, and the more likely it is to fall off under the condition of incomplete connection; if s / sz = 1, the filling at this position is the same as the average thickness; if s / sz < 1, the filling at this position is thinner than the average thickness. Taking the natural constant e as the base, an exponential operation is performed on the above distance between the tooth and the filling. The exponential function has an amplification effect. When the distance between the tooth and the filling exceeds the safe range slightly, the value increases relatively slowly; but when the exceeding degree is large, the value will increase rapidly, highlighting the influence of the distance between the tooth and the filling on the connection abnormality. The safe value is set according to the historical experience of medical staff. Among them, different filling materials have different performance characteristics.

[0010] In an implementation manner of the present invention, the analysis of the connection difficulty at the connection position between the tooth and the filling in step S4 includes the following specific contents: S41. Obtain the data of the occlusal force condition at each connection position between the corresponding tooth and the filling during the corresponding patient's occlusion and the daily average occlusion frequency condition; S42. Analyze the connection difficulty of corresponding positions based on the occlusal force conditions at various positions where the corresponding teeth are connected to the filling during the occlusion of the corresponding patient and the daily average occlusion frequency data. Among them, the connection difficulty analysis formula for the corresponding position is: , where Hz is the daily average number of occlusions, fz is the occlusal force condition at the corresponding position, and fm is the safe value of the filling force. Among them, in dental restoration, based on the patient's occlusal data (Hz, fz) and the mechanical properties of the filling (fm), the connection difficulty is analyzed, and the long-term stability of the restoration can be quantitatively evaluated.

[0011] In one implementation manner of the present invention, in step S5, the curative effect is evaluated based on the evaluation result of the connection effect of the corresponding tooth and the analysis result of the connection difficulty, including the following specific contents: S51. Obtain the connection difficulty of the corresponding position and the connection abnormality of the corresponding position. Based on the product of the connection difficulty of the corresponding position and the connection abnormality of the corresponding position, obtain the connection effect abnormality of the corresponding position. After averaging the connection effect abnormalities of all positions, at the same time, calculate the fluctuation of the connection effect abnormalities of all positions. The fluctuation is calculated in the form of variance or standard deviation. After weighted summation of the abnormal average and the abnormal fluctuation, take the reciprocal to obtain the medical evaluation value of the corresponding tooth; S52. Obtain the weighted sum of the medical evaluation value of the corresponding tooth and the connection shape matching result to obtain the curative effect evaluation value of the corresponding tooth; S53. Compare the curative effect evaluation value of the corresponding tooth with the set curative effect evaluation threshold. If the curative effect evaluation value of the corresponding tooth is greater than or equal to the set curative effect evaluation threshold, it means that the curative effect reaches the expected effect. If the curative effect evaluation value of the corresponding tooth is less than the set curative effect evaluation threshold, it means that the curative effect does not reach the expected effect.

[0012] In one implementation manner of the present invention, step S6 includes the following specific contents: If the judgment result that the curative effect does not reach the expected effect is obtained, a medical warning is issued to the medical staff. If the judgment result that the curative effect reaches the expected effect is obtained, no medical warning is issued to the medical staff.

[0013] In a second aspect, the present invention also provides a non-carious cervical defect curative effect evaluation system based on occlusal analysis, including: An image acquisition module, configured to acquire the tooth defect condition during the treatment process, and at the same time acquire the occlusal condition of the patient's teeth during the treatment process; A data acquisition module, configured to acquire the connection condition and the connection shape between the tooth and the filling based on the tooth defect condition during the treatment process; A connection effect evaluation module, configured to evaluate the connection effect based on the connection condition and the connection shape at the connection position between the tooth and the filling; A connection difficulty analysis module analyzes the connection difficulty at the connection position between the tooth and the filling based on the occlusal condition of the patient's tooth during the treatment process; An efficacy evaluation module evaluates the treatment efficacy based on the connection effect evaluation result and the connection difficulty analysis result of the corresponding tooth; A feedback module issues a treatment warning based on the treatment efficacy evaluation result to remind medical staff.

[0014] In a third aspect, an electronic device provided by the present invention includes: a processor and a memory. Among them, a computer program that can be called by the processor is stored in the memory, and the processor executes a method for evaluating the efficacy of non-carious cervical lesions based on occlusal analysis by calling the computer program stored in the memory.

[0015] In a fourth aspect, a computer-readable storage medium provided by the present invention stores instructions. When the instructions run on a computer, the computer is made to execute a method for evaluating the efficacy of non-carious cervical lesions based on occlusal analysis.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: Based on the tooth defect condition during the treatment process, the present invention obtains the connection condition and connection shape between the tooth and the filling, evaluates the connection effect based on the connection condition and connection shape at the connection position between the tooth and the filling, analyzes the connection difficulty at the connection position between the tooth and the filling based on the occlusal condition of the patient's tooth during the treatment process, and evaluates the treatment efficacy based on the connection effect evaluation result and the connection difficulty analysis result of the corresponding tooth. By integrating the three-dimensional connection morphology analysis of tooth-fillings, dynamic monitoring of occlusal mechanics, and multi-dimensional efficacy evaluation, the accuracy and long-term success rate of the restoration treatment are significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives, and advantages of the present invention will become more apparent: Figure 1 It is a schematic diagram of the overall process of the method embodiment of the present invention; Figure 2 It is a schematic structural diagram in the system embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings of the specification.

[0019] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively exclusive embodiments from other embodiments.

[0021] Embodiment 1

[0022] As Figure 1 shown, this embodiment provides a method for evaluating the curative effect of non-carious cervical lesions based on bite analysis, specifically including the following steps: S1. Obtain the tooth defect situation during the treatment process, and at the same time obtain the bite situation of the patient's teeth during the treatment process; In this embodiment, the tooth defect situation includes the defect situation of the damaged teeth and the connection situation of the filling materials, which is obtained through three-dimensional reconstruction software. Exemplarily, common devices for tooth scanning include dental cone beam CT, intraoral scanners, etc.; CBCT can provide detailed three-dimensional information of teeth and surrounding tissues, and is suitable for obtaining the internal structure and damage situation of teeth; the intraoral scanner can quickly obtain the three-dimensional data of the tooth surface and is more accurate in capturing the filling materials and the tooth surface morphology. The bite situation of the patient's teeth during the treatment process includes the bite force situation at each position of the corresponding teeth when the patient bites. Exemplarily, the bite force situation at each position can be: a bite analyzer is a professional oral examination device, which usually uses sensor technology to measure parameters such as the bite contact time, bite force magnitude, and distribution of teeth. The sensor can be installed on a special dental pad or orthodontic appliance. When the patient bites, the sensor will record the bite information of the teeth in real time and transmit the data to a computer for analysis and processing; S2. Obtain the connection situation and connection shape between the tooth and the filling material based on the tooth defect situation during the treatment process; In this embodiment, obtaining the connection situation and connection shape between the tooth and the filling material in step S2 includes the following specific steps: S21. Obtain the shape data of the connection surface between the tooth and the filling material through the defect situation of the damaged teeth and the connection situation of the filling material, obtain the connection thickness situation of each point connected to the tooth, and store them; S22. Simultaneously obtain the crack condition of the connection between the tooth and the filling to evaluate the quality of the connection between the corresponding tooth and the filling, and store it. Obtaining the thickness and crack data from the defect condition can be achieved by 3D software, which is a conventional technical means in the art; S3. Evaluate the connection effect based on the connection condition and connection shape at the connection position between the tooth and the filling; In this embodiment, the connection effect evaluation in step S3 includes the following specific steps: S31. Obtain the shape data of the connection surface between the tooth and the filling, and obtain the connection thickness condition of each point connected to the tooth. Perform connection shape matching analysis based on the shape data of the connection surface between the tooth and the filling. Among them, the connection shape matching analysis method is: the similarity degree of the three-dimensional shapes of the two connection surfaces. Among them, the calculation formula for the similarity degree of the three-dimensional shapes of the connection surfaces can be: , where mc is the shape of the tooth connection surface, mz is the shape of the filling connection surface, and the meaning of the formula is that the image size of the shape intersection is 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 degree takes 1; S32. Obtain the distance between the tooth and the filling at each connection position, the thickness of the filling, and the crack condition data at the connection position. Among them, the crack condition includes the length, width, and depth of the crack. Among them, the crack at the connection position will weaken the connection strength at the connection position, and 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 thickness in the corresponding area, the greater the quality, and the easier it is to fall off under the influence of incomplete connection. Therefore, here, analyze the connection abnormality at each position through the distance between the tooth and the filling, the thickness of the filling, and the crack condition data at the connection position. Among them, the calculation formula for the connection abnormality at the corresponding position is: , where s is the thickness of the filling, sz is the average thickness of the filling, w is the number of cracks, Vi is the volume of the i-th crack, Vm is the safe volume of the cracks, 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 exponential power of e. This formula is used to quantify the connection abnormality degree of each connection position, comprehensively considering three key factors: the thickness of the filling, the crack condition, and the distance between the tooth and the filling. It can relatively comprehensively evaluate the stability and reliability of the connection position. The higher the connection abnormality degree, the more likely problems will occur at this connection position, such as the filling falling off. The ratio s / sz is used to measure the relative size of the filling thickness at this position to the average thickness. If s / sz > 1, it means the filling at this position is thicker than the average thickness, and the thicker the filling in the corresponding area, the greater the mass, and it is more likely to fall off in the case of incomplete connection. If s / sz = 1, the filling at this position is the same as the average thickness. If s / sz < 1, the filling at this position is thinner than the average thickness. Taking the natural constant e as the base, an exponential operation is performed on the distance between the tooth and the filling as mentioned above. The exponential function has an amplification 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 exceeding degree is large, the value will increase rapidly, highlighting the influence of the distance between the tooth and the filling on the connection abnormality. The safety value is set according to the historical experience of medical staff. Among them, different filling materials have different performance characteristics. For example, resin materials have good adhesion and marginal sealing properties, and the allowed distance between the tooth and the filling can be relatively small, generally 50 - 100 microns. For traditional materials such as amalgam, due to its characteristics such as setting shrinkage, the safety value of the distance may be slightly larger, about 100 - 200 microns. Teeth in different positions have different structures and functions, and the crack volumes they can withstand also vary. For example, the anterior teeth are mainly used for cutting food and are subjected to relatively less force. 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. The posterior teeth bear chewing pressure and are more sensitive to cracks. The safe crack volume may need to be controlled within 3% - 5% of the tooth volume. S4. Analyze the connection difficulty of the connection position between the tooth and the filling based on the occlusal condition of the patient's tooth during the treatment process; In this embodiment, the analysis of the connection difficulty of the connection position between the tooth and the filling in step S4 includes the following specific contents: S41. Obtain data on the occlusal force situation of each connection position between the corresponding tooth and the filling during the occlusion of the corresponding patient and the daily average occlusion frequency situation; S42. Based on the occlusal force situation of each connection position between the corresponding tooth and the filling during the occlusion of the corresponding patient and the daily average occlusion frequency situation data, conduct an analysis of the connection difficulty of the corresponding position. The formula for the analysis of the connection difficulty of the corresponding position is: , where Hz is the average number of daily occlusions, fz is the occlusal force at the corresponding position, and fm is the safety value of the force on the corresponding filling. The range description of the safety value of the filling type (fm) is as follows: Composite resin: 50 - 150 MPa, with relatively low compressive strength. It may experience fatigue fracture under long-term stress and is suitable for low occlusal force areas (such as anterior teeth); Amalgam: 150 - 300 MPa, with relatively high compressive strength, but low elastic modulus. It may fail due to repeated occlusal fatigue (commonly used in posterior teeth); Metal full crown (cobalt-chromium): 500 - 900 MPa, with high strength, suitable for high occlusal force areas (such as molars), but it is necessary to avoid overloading that may damage the abutment teeth; All-ceramic materials: 300 - 600 MPa, with medium compressive strength, but high brittleness. It is necessary to avoid local stress concentration (such as zirconia ceramics have better performance). In dental restoration, based on the patient's occlusal data (Hz, fz) and the mechanical properties of the filling (fm), the connection difficulty analysis can be carried out to quantitatively evaluate the long-term stability of the restoration; S5. Perform a curative effect evaluation based on the evaluation results of the connection effect of the corresponding teeth and the analysis results of the connection difficulty; In this embodiment, the curative effect evaluation based on the evaluation results of the connection effect of the corresponding teeth and the analysis results of the connection difficulty in step S5 includes the following specific contents: S51. Obtain the connection difficulty at the corresponding position and the connection abnormality at the corresponding position. Multiply the connection difficulty at the corresponding position and the connection abnormality at the corresponding position to obtain the connection effect abnormality at the corresponding position. After averaging the connection effect abnormalities at all positions, simultaneously calculate the fluctuation of the connection effect abnormalities at all positions. The fluctuation is calculated in the form of variance or standard deviation. After performing weighted summation of the abnormal average and the abnormal fluctuation and then taking the reciprocal, the medical evaluation value of the corresponding tooth is obtained. Here, it should be noted that in order to avoid the denominator being 0 when taking the reciprocal, a very small constant term can be added to the denominator. An exemplary medical evaluation value formula is: , where a is the weight of the abnormal average influence, 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 connection abnormality of the tooth. The larger the value, the more serious the overall abnormal situation; Abnormal fluctuation: measures whether the abnormal degrees at different positions are uniform. Small fluctuation indicates that the abnormalities at each position are relatively consistent, and the problems may be evenly distributed. Large fluctuation indicates that the abnormalities at some positions are particularly prominent, and there may be local serious problems. By adjusting the weight, the influence degrees of the overall abnormality and the local fluctuation can be flexibly controlled. If more attention is paid to the overall abnormality, a can be increased; S52. Obtain the weighted sum of the medical evaluation value of the corresponding tooth and the connection shape matching result to obtain the curative effect evaluation value of the corresponding tooth; 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 indicates that the efficacy has reached the expected effect. If the efficacy evaluation value of the corresponding tooth is less than the set efficacy evaluation threshold, it indicates that the efficacy has not reached the expected effect; S6. Issue a treatment warning based on the efficacy evaluation result to alert medical staff; In this embodiment, step S6 includes the following specific content: If the obtained judgment result is that the efficacy has not reached the expected effect, a medical warning is issued to the medical staff. If the obtained judgment result is that the efficacy has reached the expected effect, no medical warning is issued to the medical staff.

[0023] It should be noted that in this embodiment, the acquisition method of the set parameters (such as each weighting factor and the set efficacy evaluation threshold, etc.) in this embodiment is obtained by those skilled in the art through experiments based on historical data. The set efficacy evaluation threshold here can be determined according to the retention time after dental treatment of historical personnel. The retention time is different when different materials are used for repair. For example, the retention time of amalgam is 10 - 15 years, and that of all-ceramic materials is 12 - 15 years. Take the median. Judge whether the historical personnel have maintained for the corresponding number of years after repair. If they have maintained for the corresponding number of years, take the judgment result that the efficacy has reached the expected effect. If they have not maintained for the corresponding number of years, take the judgment result that the efficacy has not reached the expected effect. Thus, a specific example of the experimental method is as follows: Obtain the tooth defect situation during the treatment of historical patients, and at the same time obtain the occlusal condition of the patients' teeth during the treatment process. Substitute them into each step of this embodiment for efficacy evaluation, and at the same time obtain the factual result of whether the efficacy has reached the expected effect. Based on the factual result and the efficacy evaluation result, substitute them into the fitting software for iterative fitting of data, and output the value of the set parameters of this embodiment that meets the maximum judgment accuracy rate. By obtaining and optimizing the set parameters of this embodiment through historical data and experiments, the judgment accuracy rate and warning effect of the system can be significantly improved. First, through the comparison of historical data and actual results, the model can continuously adjust the parameters to improve the prediction accuracy rate, which is more reliable than setting parameters based on experience. The fitting software can be matlab software.

[0024] It should be noted that in this embodiment, the following benefits and advantages exist. Based on the tooth defect situation during the treatment process, the connection situation and connection shape between the tooth and the filling are obtained. The connection effect is evaluated based on the connection situation and connection shape at the connection position between the tooth and the filling. The connection difficulty at the connection position between the tooth and the filling is analyzed based on the occlusion situation of the patient's teeth during the treatment process. The treatment effect is evaluated based on the connection effect evaluation result and the connection difficulty analysis result of the corresponding tooth. By integrating the three-dimensional connection topography analysis of tooth-fillings, the dynamic monitoring of occlusal mechanics, and the multi-dimensional treatment effect evaluation, the accuracy and long-term success rate of the restoration treatment are significantly improved.

[0025] Embodiment 2

[0026] As Figure 2 shown, this embodiment provides a non-carious cervical lesion treatment effect evaluation system based on occlusion analysis, including: an image acquisition module for acquiring the tooth defect situation during the treatment process and simultaneously acquiring the occlusion situation of the patient's teeth during the treatment process; a data acquisition module for obtaining the connection situation and connection shape between the tooth and the filling based on the tooth defect situation during the treatment process; a connection effect evaluation module for evaluating the connection effect based on the connection situation and connection shape at the connection position between the tooth and the filling; a connection difficulty analysis module for analyzing the connection difficulty at the connection position between the tooth and the filling based on the occlusion situation of the patient's teeth during the treatment process; a treatment effect evaluation module for evaluating the treatment effect based on the connection effect evaluation result and the connection difficulty analysis result of the corresponding tooth; a feedback module for giving a treatment warning based on the treatment effect evaluation result to remind medical staff.

[0027] Embodiment 3

[0028] An electronic device according to an embodiment of the present invention includes: a processor and a memory. Among them, a computer program that can be called by the processor is stored in the memory, and the processor executes a non-carious cervical lesion treatment effect evaluation method based on occlusion analysis by calling the computer program stored in the memory. It should be noted that: all computer programs of the non-carious cervical lesion treatment effect evaluation method based on occlusion analysis are implemented using the C language.

[0029] Embodiment 4

[0030] This embodiment proposes a computer-readable storage medium on which a rewritable computer program is stored; When the computer program runs on a computer device, the computer device is enabled to execute the above-mentioned non-carious cervical lesion treatment effect evaluation method based on occlusion analysis.

[0031] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. 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 includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions according to the embodiments of the present invention are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted 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. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that contains one or more collections of available media. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0032] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed in the present invention can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0033] Those skilled in the art can 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 foregoing method embodiments and will not be repeated here.

[0034] In 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, and there can be other division methods in actual implementation. For example, 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 displayed or discussed couplings, direct couplings, or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in an electrical, mechanical, or other form.

[0035] The unit described as a separating component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place or may be distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] In addition, each functional unit in various embodiments of the present invention may be integrated into a processing unit, may exist physically separately for each unit, or two or more units may be integrated into one unit.

[0037] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. 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 can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A method for evaluating the curative effect of non-carious cervical lesions based on occlusal analysis, characterized in that, It includes the following steps: S1. Obtain the tooth defect situation during the treatment process, and at the same time obtain the occlusal condition of the patient's teeth during the treatment process; S2. Based on the tooth defect situation during the treatment process, obtain the connection condition and connection shape between the tooth and the filling material; S3. Evaluate the connection effect based on the connection condition and connection shape at the connection position between the tooth and the filling material; S4. Analyze the connection difficulty at the connection position between the tooth and the filling material based on the occlusal condition of the patient's teeth during the treatment process; S5. Evaluate the treatment effect based on the connection effect evaluation result and connection difficulty analysis result of the corresponding tooth; S6. Give a treatment warning based on the treatment effect evaluation result to remind medical staff.

2. The method for evaluating the curative effect of non-carious cervical lesions based on occlusion analysis according to claim 1, wherein The obtaining of the connection condition and connection shape between the tooth and the filling material includes the following specific steps: Obtain the shape data of the connection surface between the tooth and the filling material, obtain the connection thickness conditions of each point connected to the tooth through the defect condition of the damaged tooth and the filling condition of the filling material, and store them; At the same time, obtain the crack condition of the connection between the tooth and the filling material to evaluate the connection quality between the corresponding tooth and the filling material, and store it.

3. The method for evaluating the curative effect of non-carious cervical lesions based on occlusion analysis according to claim 2, wherein The connection effect evaluation includes the following specific steps: Obtain the shape data of the connection surface between the tooth and the filling material, obtain the connection thickness conditions of each point connected to the tooth, and perform connection shape matching analysis based on the shape data of the connection surface between the tooth and the filling material. Among them, the connection shape matching analysis method is: the similarity degree of the three-dimensional shapes of the two connection surfaces; Obtain the distance between the tooth and the filling material at each connection position, the thickness of the filling material, and the crack condition data at the connection position. Among them, the crack condition includes the length, width, and depth of the crack, and analyze the connection abnormality at each position through the distance between the tooth and the filling material at each connection position, the thickness of the filling material, and the crack condition data at the connection position.

4. The method for evaluating the curative effect of non-carious cervical lesions based on occlusion analysis according to claim 3, wherein The analysis of the connection difficulty at the connection position between the tooth and the filling material includes the following specific contents: Obtain the occlusal force condition at each connection position between the corresponding tooth and the filling material when the corresponding patient bites and the data of the average daily biting frequency; Analyze the connection difficulty at the corresponding position based on the occlusal force condition at each connection position between the corresponding tooth and the filling material when the corresponding patient bites and the data of the average daily biting frequency.

5. The method for evaluating the curative effect of non-carious cervical lesions based on occlusion analysis according to claim 4, wherein The evaluation of the treatment effect based on the connection effect evaluation result and connection difficulty analysis result of the corresponding tooth includes the following specific contents: Obtain the connection difficulty at the corresponding position and the connection abnormality at the corresponding position. Based on the product of the connection difficulty at the corresponding position and the connection abnormality at the corresponding position, obtain the connection effect abnormality at the corresponding position. After averaging the connection effect abnormalities at all positions, at the same time, calculate the fluctuation of the connection effect abnormalities at all positions. The fluctuation is calculated in the form of variance or standard deviation. After performing weighted summation of the abnormal average and abnormal fluctuation, take the reciprocal to obtain the medical evaluation value of the corresponding tooth; Obtain the weighted sum of the medical evaluation value of the corresponding tooth and the connection shape matching result to obtain the treatment effect 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 indicates 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 indicates that the efficacy has not achieved the expected effect.

6. The method for evaluating the efficacy of non-carious cervical lesions based on occlusal analysis according to claim 5, wherein The S6 includes the following specific contents: If the obtained judgment result is that the efficacy has not achieved the expected effect, a medical warning is issued to the medical staff; if the obtained judgment result is that the efficacy has achieved the expected effect, no medical warning is issued to the medical staff.

7. The method for evaluating the efficacy of non-carious cervical lesions based on occlusion analysis according to claim 2, wherein The calculation formula for the connection anomaly at the corresponding position is as follows: , where s is the thickness of the filling, sz is the average thickness of the filling, w is the number of cracks, Vi is the volume of the i-th crack, Vm is the safe volume of the cracks, 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 exponential power of e.

8. A non-carious cervical lesion treatment efficacy evaluation system based on occlusal analysis, which is implemented based on the non-carious cervical lesion treatment efficacy evaluation method according to any one of claims 1-7, characterized in that The system includes: An image acquisition module, configured to acquire the tooth defect situation during the treatment process and simultaneously acquire the occlusal condition of the patient's teeth during the treatment process; A data acquisition module, configured to acquire the connection condition and connection shape between the tooth and the filling based on the tooth defect situation during the treatment process; A connection effect evaluation module, configured to evaluate the connection effect based on the connection condition and connection shape at the connection position between the tooth and the filling; A connection difficulty analysis module, configured to analyze the connection difficulty at the connection position between the tooth and the filling based on the occlusal condition of the patient's teeth during the treatment process; An efficacy evaluation module, configured to evaluate the efficacy based on the connection effect evaluation result and the connection difficulty analysis result of the corresponding tooth; A feedback module, configured to issue a treatment warning based on the efficacy evaluation result to remind the medical staff.

9. 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 non-carious cervical lesion efficacy evaluation method based on occlusal analysis according to any one of claims 1-7 by calling the computer program stored in the memory.

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