Dental measurement and tooth arrangement method, electronic equipment and storage medium

Abstract

The embodiment of the invention relates to the field of dentistry, and discloses a dental measurement and tooth arrangement method, electronic equipment and a storage medium. Adjusting the position and the size of the digital orthodontic ruler relative to the skull side position film, so that the feature elements on the digital orthodontic ruler are aligned with the feature elements in the skull side position film; the area where the central incisor is located on the side position film of the head is obtained, a visual identifier indicating the target position of the central incisor is formed, and the feature elements comprise the feature element indicating the position of the central incisor and the feature element indicating the position of the jaw plane line; and adjusting the relative position of the visual identifier and the skull side position film, so that the adjusted visual identifier conforms to a preset orthodontic target, and confirming the central incisor target position according to the adjusted visual identifier. According to the scheme, the visual digital orthodontic ruler is adopted to measure the skull side position film, and data inaccuracy caused by hand-held orthodontic ruler measurement can be avoided; meanwhile, the measuring process is more convenient and easy to operate.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of dentistry, and in particular to a dental measurement and tooth arrangement method, an electronic device, and a storage medium. Background Art

[0002] The existing method for measuring tooth and jaw deformity is mainly to manually observe the lateral skull film, use a handheld orthodontic ruler to measure the relevant tooth and jaw data on the lateral skull film, or further combine the observation and measurement of the patient's appearance or appearance film to finally determine the target position of the central incisor. Then, the teeth are arranged based on the target position of the central incisor.

[0003] However, there are at least the following defects in measuring the relevant tooth and jaw data by using a handheld orthodontic ruler:

[0004] First, during the measurement process, the measured data may be inaccurate because the orthodontic ruler blocks the lateral cephalogram and cannot be fully visualized, or the movement is unstable when holding the orthodontic ruler, or there are observation errors when reading the data manually;

[0005] Second, during the measurement process, due to the complex position of the teeth and jaws in the oral cavity, it is inconvenient to measure with a handheld orthodontic ruler, especially when measuring in a small space area. Summary of the invention

[0006] The purpose of the embodiments of the present application is to provide a dental measurement and tooth arrangement method, electronic device and storage medium, which can quickly determine the target position of the central incisor, and the overall measurement process is accurate, efficient and easy to operate.

[0007] In order to solve the above technical problems, the embodiments of the present application provide a dental measurement method, comprising:

[0008] Load the cephalogram and digital orthodontic ruler to be measured;

[0009] Adjust the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; obtain the area where the central incisor is located on the lateral skull film to form a visual mark indicating the target position of the central incisor; wherein the characteristic elements include characteristic elements indicating the position of the central incisor and characteristic elements indicating the position of the jaw plane line;

[0010] The relative position of the visualization mark and the lateral skull film is adjusted so that the adjusted visualization mark meets the predetermined orthodontic goal, and the target position of the central incisor is confirmed according to the adjusted visualization mark.

[0011] An embodiment of the present application further provides a method for tooth arrangement, comprising: using the dental measurement method as described above to measure a target position of a central incisor on a lateral skull radiograph of teeth to be arranged, and performing tooth arrangement based on the target position of the central incisor.

[0012] An embodiment of the present application further provides an electronic device, including:

[0013] at least one processor; and,

[0014] a memory communicatively connected to the at least one processor; wherein,

[0015] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the dental measurement method as described above, or to perform the teeth arrangement method as described above.

[0016] The embodiments of the present application further provide a computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the dental measurement method described above is implemented, or the teeth arrangement method described above is implemented.

[0017] The dental measurement and teeth arrangement method provided in the embodiment of the present application loads a lateral skull film to be measured and a digital orthodontic ruler, and uses the digital orthodontic ruler to measure the relevant orthodontic parameters on the lateral skull film to determine the target position of the central incisor; the measurement process mainly includes two steps: first, by adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film, the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; the area where the central incisor is located on the lateral skull film is obtained, and a visual mark indicating the target position of the central incisor is formed, wherein these characteristic elements include characteristic elements indicating the position of the central incisor and characteristic elements indicating the position of the jaw plane line; that is, the position of the central incisor on the digital orthodontic ruler just after alignment can be regarded as the initial target position of the central incisor; then, the relative position of the visual mark and the lateral skull film is adjusted so that the adjusted visual mark meets the predetermined orthodontic target, and the target position of the central incisor is confirmed according to the adjusted visual mark. This solution uses a digital orthodontic ruler to measure the relevant orthodontic parameters on the lateral skull film, which can avoid the inaccurate measurement data caused by measuring with a handheld orthodontic ruler; and the use of a digital orthodontic ruler to complete the measurement of the lateral skull film in the operation interface can realize visual measurement operations, making the measurement data more accurate, the measurement process more convenient, and easy to operate.

[0018] In addition, the predetermined orthodontic target includes: the root of the central incisor is located in the middle position of the jawbone of the jaw where it is located; the relative position of the visual marker and the lateral skull film is adjusted so that the adjusted visual marker meets the predetermined orthodontic target, including: after each adjustment of the root position of the central incisor corresponding to the visual marker, generating a position error between the root position and the center point of the jawbone of the jaw to which the central incisor belongs on the lateral skull film; when the position error exceeds a preset range, repeatedly adjusting the position of the visual marker and updating the position error until the updated position error is within the preset range, thereby achieving the predetermined orthodontic target that the root of the central incisor is located in the middle position of the jawbone of the jaw where it is located.

[0019] In addition, the predetermined orthodontic target includes: the orthodontic reference line is consistent with the vertical direction of the skull; the relative position of the visual marker and the lateral skull film is adjusted so that the adjusted visual marker meets the predetermined orthodontic target, including: after each adjustment of the position of the visual marker, an orthodontic reference line is generated based on the visual marker and the forehead center point on the lateral skull film; when the angle difference between the orthodontic reference line and the vertical direction of the skull exceeds a preset range, repeatedly adjusting the position of the visual marker and updating the orthodontic reference line until the angle difference between the updated orthodontic reference line and the vertical direction of the skull is within a preset range, thereby achieving the predetermined orthodontic target of the orthodontic reference line being consistent with the vertical direction of the skull.

[0020] In addition, the visual mark includes the root contour of the central incisor, and the adjustment of the relative position of the visual mark and the lateral skull film includes: the root of the central incisor in the visual mark and the root position in the lateral skull film are relatively fixed, and the relative position of the visual mark and the lateral skull film is adjusted by rotation. In this way, it can be ensured that after the root of the central incisor is adjusted to the middle position of the jawbone of the jaw in which it is located in the early stage, the subsequent adjustment will not affect the early adjustment result.

[0021] In addition, the visual mark includes the coronal plane contour of the central incisor, and the process of obtaining the orthodontic reference line includes: using a straight line passing through the anterior end point of the coronal surface of the central incisor in the visual mark and the center point of the forehead on the lateral skull film as the orthodontic reference line, thereby providing a method for obtaining the orthodontic reference line.

[0022] In addition, the method also includes: after generating an orthodontic reference line based on the visual mark and the forehead center point on the lateral skull film, displaying the orthodontic reference line, the vertical direction of the skull, and the angle difference between the orthodontic reference line and the vertical direction of the skull, so that the observer can see the adjustment process in real time, assisting the operator to promptly see the accurate result after the adjustment, and facilitating the next adjustment operation.

[0023] In addition, the predetermined orthodontic target includes: the sagittal spacing of the crowns of the central incisors of the upper and lower jaws, and / or the vertical coverage distance are within respective preset ranges; the relative position of the visual marker and the lateral skull film is adjusted so that the adjusted visual marker meets the predetermined orthodontic target, including: after each adjustment of the crown position of the mandibular central incisor corresponding to the visual marker, the sagittal spacing of the crown of the mandibular central incisor relative to the crown of the maxillary central incisor in the lateral skull film is generated; when the spacing exceeds the preset range, repeatedly adjusting the position of the visual marker and updating the spacing until the updated spacing is within the preset range;

[0024] and / or,

[0025] After each adjustment of the crown position of the mandibular central incisor corresponding to the visual marker, a vertical coverage distance of the crown of the mandibular central incisor relative to the crown of the maxillary central incisor in the lateral skull film is generated; when the coverage distance exceeds a preset range, the position of the visual marker is repeatedly adjusted and the coverage distance is updated until the updated coverage distance is within the preset range, thereby achieving the predetermined orthodontic goals of the sagittal distance between the crowns of the central incisors of the upper and lower jaws and the vertical coverage distance.

[0026] In addition, the predetermined orthodontic target includes: the long axis of the central incisor and the direction of the orthodontic reference line are consistent; the relative position of the visual marker and the lateral skull film is adjusted so that the adjusted visual marker meets the predetermined orthodontic target, including: after each adjustment of the position of the visual marker, an orthodontic reference line is generated based on the visual marker and the forehead center point on the lateral skull film; when the angle difference between the orthodontic reference line and the long axis of the central incisor exceeds a preset range, repeatedly adjusting the position of the visual marker and updating the orthodontic reference line until the updated angle difference is within the preset range, thereby achieving the predetermined orthodontic target between the orthodontic reference line and the long axis of the central incisor.

[0027] In addition, the predetermined orthodontic target includes: the mandibular central incisor is located sagittally posterior to the maxillary central incisor; the relative position of the visual mark and the lateral cephalogram is adjusted so that the adjusted visual mark meets the predetermined orthodontic target, including: after each adjustment of the mandibular central incisor position corresponding to the visual mark, generating a sagittal position relationship between the mandibular central incisor corresponding to the visual mark and the maxillary central incisor in the lateral cephalogram; when the mandibular central incisor corresponding to the visual mark is located sagittally forward of the maxillary central incisor in the lateral cephalogram, repeatedly adjusting the position of the visual mark and updating the position relationship until the updated position relationship satisfies that the mandibular central incisor corresponding to the visual mark is located sagittally posterior to the maxillary central incisor in the lateral cephalogram, thereby achieving a sagittal upward position relationship between the mandibular central incisor and the maxillary central incisor that meets the predetermined orthodontic target and prevents tooth crossbite.

[0028] In addition, the predetermined orthodontic target also includes user-defined adjustment information associated with appearance, so that the user-defined adjustment information associated with appearance can be used as the predetermined orthodontic target to be achieved by adjusting the visual identification.

[0029] In addition, in adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film, the method further includes: during the adjustment process, identifying the updated position of the characteristic elements on the digital orthodontic ruler after adjustment, and automatically adsorbing the characteristic elements on the digital orthodontic ruler to align with the characteristic elements pre-marked in the lateral skull film when the coordinate position of the updated position is less than a preset distance from the characteristic elements pre-marked in the lateral skull film. This automatic adsorption method can quickly align the root points and cusp points on the digital orthodontic ruler with the root points and cusp points in the lateral skull film.

[0030] In addition, the characteristic elements on the digital orthodontic ruler and the characteristic elements in the lateral skull film respectively include root points and cusp points, which can accurately achieve alignment through the roots and cusps when aligning the central incisors.

[0031] Wherein, the adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film includes: scaling, translating and rotating the digital orthodontic ruler so that the roots and cusps of the central incisors on the digital orthodontic ruler belonging to the same jaw position are aligned with the roots and cusps of the central incisors in the lateral skull film, and the jaw plane line on the digital orthodontic ruler belonging to the same jaw is aligned with the jaw plane line in the lateral skull film. The alignment is achieved by scaling, translating and rotating the digital orthodontic ruler, which makes the operation more flexible and improves the operation efficiency.

[0032] In addition, the characteristic elements of the lateral skull film include the jaw plane line, and the characteristic elements on the digital orthodontic ruler include the jaw plane line. Adjusting the relative position of the visual mark and the lateral skull film includes: adjusting the relative position of the visual mark and the lateral skull film with the jaw plane line in the lateral skull film aligned with the jaw plane line on the digital orthodontic ruler as a restriction, thereby satisfying the constraint requirement that the jaw plane line does not change significantly before and after the adjustment.

[0033] In addition, the adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; obtaining the area where the central incisor on the lateral skull film is located to form a visual mark indicating the target position of the central incisor, includes: adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler belonging to the maxilla are aligned with the characteristic elements in the lateral skull film; obtaining the area where the central incisor belonging to the maxilla on the lateral skull film is located to form a first visual mark indicating the target position of the central incisor belonging to the maxilla; and adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler belonging to the mandible are aligned with the characteristic elements in the lateral skull film; obtaining the area where the central incisor belonging to the mandible on the lateral skull film is located to form a second visual mark indicating the target position of the central incisor belonging to the mandible, thereby performing alignment operations on the characteristic elements belonging to the maxilla and the characteristic elements belonging to the mandible respectively.

[0034] In addition, the method further includes: when the first visual mark and the second visual mark need to be formed simultaneously, first forming the first visual mark indicating the target position of the central incisor belonging to the maxilla, and then forming the second visual mark indicating the target position of the central incisor belonging to the mandible. In this way, the central incisor of the mandible is located sagittally forward of the central incisor of the maxilla in the determined target positions of the central incisors of the maxilla, thereby avoiding the occurrence of crossbite.

[0035] In addition, before loading the lateral skull film to be measured, the method further includes: determining the position of the central incisor on the original lateral skull film and the position of the jaw plane line of the jaw where the central incisor is located, and marking the characteristic elements indicating the position of the central incisor and the characteristic elements indicating the position of the jaw plane line of the jaw where the central incisor is located on the original lateral skull film to form the lateral skull film to be measured. This facilitates the subsequent alignment operation of the characteristic elements on the digital orthodontic ruler with the characteristic elements on the lateral skull film.

[0036] In addition, the method of determining the position of the jaw plane line of the jaw where the central incisor is located on the original lateral skull film includes: determining the position of the first molar on the original lateral skull film, and determining the straight line formed by the occlusal surfaces of the central incisor and the first molar on the original lateral skull film on the lateral skull film as the position of the jaw plane line of the jaw where the central incisor is located, thereby quickly forming the jaw plane line.

[0037] In addition, the expression form of the characteristic element includes: at least one of a point, a line, and a figure, which can enrich the form of the characteristic element. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0039] Figure 1a is a flow chart of a dental measurement method provided by an embodiment of the present application;

[0040] Figure 1b is a schematic diagram of a lateral skull radiograph to be measured and a digital orthodontic ruler provided in an embodiment of the present application;

[0041] Figure 1c is a schematic diagram of a visual identification of the position of the maxillary central incisor provided in an embodiment of the present application;

[0042] Figure 2a is a flow chart of a dental measurement method provided by an embodiment of the present application;

[0043] Figure 2b is a schematic diagram of adjusting a visual identifier provided by an embodiment of the present application;

[0044] Figure 3a is a flow chart of a dental measurement method provided by an embodiment of the present application;

[0045] Figure 3b is a schematic diagram of adjusting a visual identifier provided by an embodiment of the present application;

[0046] Figure 4ais a flow chart of a dental measurement method provided in an embodiment of the present application

[0047] Figure 4b is a schematic diagram of adjusting a visual identifier provided by an embodiment of the present application;

[0048] Figure 5a is a flow chart of a dental measurement method provided by an embodiment of the present application;

[0049] Figure 5b is a schematic diagram of adjusting a visual identifier provided by an embodiment of the present application;

[0050] Figure 6a is a flow chart of a dental measurement method provided by an embodiment of the present application;

[0051] Figure 6b is a schematic diagram of the adjusted target position of the central incisor provided in an embodiment of the present application;

[0052] Figure 7 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0054] One embodiment of the present invention relates to a dental measurement method, which is applied to an operating software capable of image processing, such as Figure 1a As shown, this implementation includes the following steps.

[0055] Step 101: Load the lateral skull radiograph and the digital orthodontic ruler to be measured.

[0056] The lateral skull film can be an X-ray or CT lateral skull film, which is a side face image of the patient. The image must include the patient's teeth, including the patient's central incisor, first molar, jaw, etc., which can be used for all image content required for subsequent measurement of teeth and jaws. The digital orthodontic ruler has standard image content of central incisor, first molar, jaw, etc., as well as scale marks for measuring angles and distances.

[0057] Specifically, Figure 1bAs shown, the lateral skull film (P) and the digital orthodontic ruler (R) to be measured can be loaded in the software operation interface, wherein the lateral skull film and the digital orthodontic ruler can be displayed through two layers, the layer of the digital orthodontic ruler is located on the upper layer of the lateral skull film layer, and the digital orthodontic ruler can be set as a semi-transparent layer, so that it is more convenient for the operator to observe the relative position relationship of the digital orthodontic ruler with respect to the lateral skull film. The digital orthodontic ruler can also be a semi-transparent image control to realize intelligent measurement.

[0058] Step 102: Adjust the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; obtain the area where the central incisor is located on the lateral skull film to form a visual mark indicating the target position of the central incisor; wherein the characteristic elements include characteristic elements indicating the position of the central incisor and characteristic elements indicating the position of the jaw plane line.

[0059] In this embodiment, Figure 1b As shown, the positions of the image contents such as the central incisor, first molar, and jaw contained in the digital orthodontic ruler and the lateral skull film can be displayed through image elements (such as points, lines, graphics, etc.), and these image elements can be called characteristic elements of the corresponding positions of the expressed image contents, that is, the expression form of the characteristic elements can include: at least one of points, lines, and graphics. Depending on the type of image content expressed by the characteristic elements, the characteristic elements in this embodiment may include characteristic elements indicating the position of the central incisor and characteristic elements indicating the position of the jaw plane line. Among them, the jaw plane line refers to a straight line upward at the skull level from the mesial adjacent point of the bilateral maxillary central incisors to the mesio-buccal cusps of the bilateral first molars in the imaginary plane formed.

[0060] Specifically, after loading the digital orthodontic ruler and the lateral skull film, the position and size of the layer where the digital orthodontic ruler is located relative to the layer where the lateral skull film is located can be adjusted in the software operation interface, so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; that is, the corresponding central incisor position and jaw plane line position on the digital orthodontic ruler are aligned with the corresponding central incisor position and jaw plane line position in the lateral skull film. In this way, the corresponding central incisor position and jaw plane line position in the lateral skull film can be mapped to the digital orthodontic ruler, and the digital orthodontic ruler is provided with scale marks for measuring angles and distances. By performing relative movement processing on the digital orthodontic ruler relative to the central incisor in the lateral skull film, the target position of the central incisor can be quickly explored and tested.

[0061] For example Figure 1bIn the embodiment of the present invention, taking the alignment of the maxillary central incisor position indicated on the digital orthodontic ruler with the maxillary central incisor position in the lateral skull film as an example, the digital orthodontic ruler can be scaled first to make the central incisor similar in size to the central incisor in the lateral skull film; then the digital orthodontic ruler can be translated to align the root of the central incisor with the root of the central incisor in the lateral skull film; then the root of the central incisor on the aligned digital orthodontic ruler is fixed as the center point, and the digital orthodontic ruler is rotated to align the cusp of the central incisor on the digital orthodontic ruler with the cusp of the central incisor in the lateral skull film, thereby achieving the alignment of the central incisor.

[0062] In order to better demonstrate the relative movement of the central incisor on the digital orthodontic ruler relative to the central incisor in the lateral skull film in this embodiment, after completing the alignment of the characteristic elements on the digital orthodontic ruler with the characteristic elements in the lateral skull film, that is, the corresponding central incisor position and jaw plane line position on the digital orthodontic ruler are aligned with the corresponding central incisor position and jaw plane line position in the lateral skull film, the area where the central incisor is located on the lateral skull film is obtained, and then a visual mark indicating the target position of the central incisor is formed, such as Figure 1c In the figure, a shadow area with the same contour is formed at the position of the maxillary central incisor on the lateral skull film, which is the visual mark indicating the position of the maxillary central incisor (B). It can be understood that the visual mark of the target position of the central incisor can also be presented in the form of the above-mentioned characteristic elements. Different from the characteristic elements on the digital orthodontic ruler and the lateral skull film, the visual mark can be set in a new layer for presentation. For example, the layer where the visual mark is located can be the layer above the layer where the digital orthodontic ruler is located. This can facilitate the adjustment of the position of the visual mark and better reflect the position change of the central incisor from the original position to the target position on the lateral skull film.

[0063] Step 103: Adjust the relative position of the visualization mark and the cephalographic film so that the adjusted visualization mark meets the predetermined orthodontic goal, and confirm the target position of the central incisor according to the adjusted visualization mark.

[0064] Specifically, by adjusting the relative position of the visualization mark and the cephalogram, that is, adjusting the target position of the central incisor indicated by the visualization mark relative to the original position of the central incisor in the cephalogram, the adjustment of the position of the central incisor in the cephalogram can be simulated. The purpose of the adjustment is to make the adjusted visualization mark meet the predetermined orthodontic goal.

[0065] In this embodiment, there is no limitation on the predetermined orthodontic target, which may include: the root of the central incisor is located in the middle of the jawbone of the jaw; the orthodontic reference line is consistent with the vertical direction of the skull; the sagittal spacing of the crowns of the upper and lower central incisors and / or the vertical coverage distance are within their respective preset ranges; the long axis of the central incisor is consistent with the direction of the orthodontic reference line; the mandibular central incisor is located sagittally posterior to the maxillary central incisor, etc.; and may also include user-defined adjustment information associated with appearance, etc. These predetermined orthodontic targets and how to adjust the corresponding visual identifiers will be described in detail in subsequent embodiments.

[0066] It should be noted that the process of adjusting the visual marker to meet the predetermined orthodontic goal and verifying the adjustment results may be repeated multiple times, that is, each time the relative position of the visual marker and the lateral skull film is adjusted in a small range, it will be verified whether the adjusted visual marker meets the predetermined orthodontic goal; if it does not, it will need to be adjusted again, and if it does, the operating software will confirm the central incisor target position based on the visual marker after the adjustment, that is, the central incisor position indicated by the visual marker will be determined as the central incisor target position.

[0067] It can be seen that the initially generated visual mark can also indicate an initial target position of the central incisor, and the target position of the central incisor at this time is exactly the same as the original position of the central incisor in the lateral cephalogram.

[0068] Compared with the related art, in this embodiment, by loading the lateral skull film and the digital orthodontic ruler to be measured, the digital orthodontic ruler is used to measure the relevant orthodontic parameters on the lateral skull film to determine the target position of the central incisor; the measurement process mainly includes two steps: first, by adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film, the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; the area where the central incisor is located on the lateral skull film is obtained, and a visual mark indicating the target position of the central incisor is formed, wherein these characteristic elements include characteristic elements indicating the position of the central incisor and characteristic elements indicating the position of the jaw plane line; that is, the position of the central incisor on the digital orthodontic ruler just after alignment can be regarded as the initial target position of the central incisor; then, the relative position of the visual mark and the lateral skull film is adjusted so that the adjusted visual mark meets the predetermined orthodontic target, and the target position of the central incisor is confirmed according to the adjusted visual mark. This solution uses a digital orthodontic ruler to measure the relevant orthodontic parameters on the lateral skull radiograph, which can avoid inaccurate measurement data caused by measuring with a handheld orthodontic ruler; and the use of a digital orthodontic ruler to complete the measurement action in the software operation interface can realize visual measurement operations, making the measurement data more accurate, the measurement process more convenient, and easy to operate.

[0069] In the following embodiments, a preprocessing operation is performed on the lateral skull film before loading the lateral skull film to be measured.

[0070] In some embodiments, before loading the cephalometric film to be measured, the following steps may also be included:

[0071] Determine the position of the central incisor on the original lateral skull film and the position of the jaw plane line of the jaw where the central incisor is located, and mark the characteristic elements indicating the position of the central incisor and the characteristic elements indicating the position of the jaw plane line of the jaw where the central incisor is located on the original lateral skull film to form a lateral skull film to be measured.

[0072] Specifically, the original lateral skull film obtained from the original channel does not mark the position of the characteristic elements that need to be processed in this application. Therefore, it is necessary to perform relevant preprocessing on the original lateral skull film, that is, by performing image recognition and other processing on the elemental lateral skull film, the position of the central incisor on the original lateral skull film and the position of the jaw plane line of the jaw where the central incisor is located are determined, and the characteristic elements indicating the position of the central incisor and the characteristic elements indicating the position of the jaw plane line of the jaw where the central incisor is located are marked on the original lateral skull film to form the lateral skull film to be measured.

[0073] In one example, the process of determining the position of the jaw plane line of the central incisor on the original cephalogram may include:

[0074] Determine the position of the first molar on the original lateral skull film, and use the straight line formed by the occlusal surfaces of the central incisor and the first molar on the original lateral skull film as the jaw plane line position of the jaw where the central incisor is located.

[0075] Specifically, the positions of the first molar and the central incisor in the original lateral skull film can be determined by first performing image recognition on the original lateral skull film, and then the straight line formed by the occlusal surfaces of the central incisor and the first molar on the original lateral skull film on the lateral skull film can be determined as the jaw plane line position of the jaw where the central incisor is located.

[0076] In this embodiment, the lateral cephalogram to be loaded is formed by pre-marking the central incisor position on the original lateral cephalogram and the jaw plane line position of the jaw where the central incisor is located as characteristic elements. Therefore, after the lateral cephalogram is loaded, the position and size of the digital orthodontic ruler relative to the lateral cephalogram can be quickly adjusted to align the characteristic elements on the digital orthodontic ruler with the characteristic elements in the lateral cephalogram.

[0077] In the following embodiments, the specific contents included in the above-listed predetermined orthodontic targets and how to adjust the visual identifier for each predetermined orthodontic target will be described in detail one by one. It should be noted in advance that the process of adjusting the visual identifier for each predetermined orthodontic target may require repeated adjustments to complete (the adjustment here can be the operating software executing a preset program to automatically adjust in a fixed step-by-step manner, or it can be manual adjustment, or it can be a combination of these two situations to complete the adjustment process), and after each adjustment, the operating software also needs to verify whether the result of this adjustment meets the predetermined orthodontic target. Based on the different predetermined orthodontic targets, the specific content of the verification will also be different.

[0078] In some embodiments, the predetermined orthodontic goal may include: the root of the central incisor is located in the middle position of the jawbone of the jaw; Figure 2a As shown, the above step 103 may include the following sub-steps:

[0079] Sub-step 1031: after each adjustment of the root position of the central incisor corresponding to the visualization mark, a position error between the root position and the center point of the jawbone of the jaw to which the central incisor belongs on the lateral cephalogram is generated.

[0080] Specifically, Figure 2b As shown, the visual mark (B) includes the position of the root (B1) of the central incisor, and the root position of the central incisor corresponding to the visual mark is adjusted so that the root position is as close as possible to the center point (C1) of the jawbone of the jaw to which the central incisor belongs on the lateral skull film; after each adjustment, the operating software will generate the position error between the root position of the central incisor corresponding to the visual mark after this adjustment and the center point of the jawbone of the jaw to which the central incisor belongs on the lateral skull film. The position error can be represented by the distance between the root position and the center point of the jawbone. The larger the distance, the larger the corresponding position error, and vice versa, the smaller the distance, the smaller the corresponding position error.

[0081] Sub-step 1032: When the position error exceeds the preset range, repeatedly adjust the position of the visual marker and update the position error until the updated position error is within the preset range.

[0082] Specifically, after generating the position error between the root position of the central incisor corresponding to the visual mark after this adjustment and the center point of the jawbone of the jaw to which the central incisor belongs on the lateral skull film, the position error can be verified, that is, to determine whether the position error exceeds the preset position error range. If exceeded, the position of the visual mark is adjusted again and the above position error is updated until the updated position error is within the preset position error range. The number of times the position of the visual mark is adjusted and the position error is verified can be multiple times until the position error is within the preset position error range.

[0083] Sub-step 1033: confirming the target position of the central incisor according to the adjusted visual marker.

[0084] In this embodiment, by adjusting the root position of the central incisor corresponding to the visual marker so that the position error between it and the center point of the jawbone of the jaw to which the central incisor belongs on the lateral cranial radiograph is within a preset range, the predetermined orthodontic goal of having the root of the central incisor located in the middle position of the jawbone of the jaw is achieved.

[0085] In some embodiments, the predetermined orthodontic goal may include: the orthodontic reference line is aligned with the vertical direction of the skull.

[0086] Among them, the orthodontic reference line can be a reference line used to determine whether the corresponding central incisor position in each adjusted visual mark meets the orthodontic target, and in principle, multiple different orthodontic reference lines can be defined according to different predetermined orthodontic targets. When the adjusted central incisor position makes the orthodontic reference line meet the preset requirements, it is considered that the central incisor position corresponding to the currently adjusted visual mark meets the predetermined orthodontic target. The vertical direction of the skull can be defined as the direction perpendicular to the plane formed by the infraorbital margin and the upper edge of the external auditory meatus.

[0087] Correspondingly, such as Figure 3a As shown, the above step 103 may include the following sub-steps:

[0088] Sub-step 1034: after each adjustment of the position of the visualization mark, an orthodontic reference line is generated based on the visualization mark and the forehead center point on the lateral skull film.

[0089] Among them, the orthodontic reference line defined in this embodiment must meet the following requirements: first, the orthodontic reference line is generated based on the visual marker and the center point of the forehead on the lateral skull film, such as a straight line passing through a point on the central incisor corresponding to the visual marker and the center point of the forehead on the lateral skull film; second, when the orthodontic reference line adjusts the position of the visual marker to achieve the predetermined orthodontic goal, the orthodontic reference line should be consistent with the vertical direction of the skull.

[0090] For example, Figure 3b As shown, the visual marker (B) may include the coronal contour of the central incisor, and the process of obtaining the orthodontic reference line may include: using a straight line passing through the anterior end point (a1) of the coronal face of the central incisor in the visual marker and the center point (a2) of the forehead on the lateral skull film as the orthodontic reference line (L1).

[0091] Specifically, the visual mark includes the position of the key point used to form the orthodontic reference line, such as the position of the front end point of the coronal face of the central incisor. By adjusting the position of the central incisor corresponding to the visual mark, the position of the key point used to form the orthodontic reference line will be adjusted, so that the straight line passing through the key point and the forehead center point on the lateral head film, i.e., the orthodontic reference line (L1), is as consistent as possible with the vertical direction (L2) of the head; after each adjustment, the operating software will generate the angle difference between the orthodontic reference line corresponding to the visual mark after this adjustment and the vertical direction of the head. The larger the angle difference, the more inconsistent the corresponding orthodontic reference line is with the vertical direction of the head, and vice versa, the smaller the angle difference, the more consistent the corresponding orthodontic reference line is with the vertical direction of the head.

[0092] For example, Figure 3b In the orthodontic reference line, the position of the front end point of the coronal face of the maxillary central incisor in the visual mark and the straight line of the forehead center point on the lateral head film are used as the orthodontic reference line. When adjusting the position of the maxillary central incisor in the visual mark, the angle difference between the orthodontic reference line and the vertical direction of the head calculated after each adjustment is used to determine whether the central incisor is adjusted to the target position.

[0093] Sub-step 1035: When the angle difference between the orthodontic reference line and the vertical direction of the skull exceeds a preset range, repeatedly adjust the position of the visual marker and update the orthodontic reference line until the angle difference between the orthodontic reference line and the vertical direction of the skull after the update is within the preset range.

[0094] Specifically, after the angle difference between the orthodontic reference line formed after the adjusted visual mark and the vertical direction of the skull is generated, the angle difference can be verified, that is, it is determined whether the angle difference exceeds the preset angle difference range. If it exceeds, the position of the visual mark is adjusted again and the above-mentioned orthodontic reference line is updated until the angle difference between the updated orthodontic reference line and the vertical direction of the skull is within the preset angle difference range. The number of times of adjusting the position of the visual mark and verifying the angle difference can be multiple times until the angle difference is within the preset angle difference range.

[0095] Sub-step 1033: confirming the target position of the central incisor according to the adjusted visual marker.

[0096] In this embodiment, the visualization mark may include the root contour of the central incisor; accordingly, adjusting the relative position of the visualization mark and the lateral skull film may include: keeping the root of the central incisor in the visualization mark relatively fixed to the root position in the lateral skull film, and rotating and adjusting the relative position of the visualization mark and the lateral skull film.

[0097] Specifically, since the characteristic elements of the central incisor on the digital orthodontic ruler and the characteristic elements of the central incisor on the lateral cephalogram have been aligned in the previous step 102, in order to ensure that the root of the central incisor is located in the middle position of the jawbone of the jaw, it is necessary to ensure that the visualization mark is adjusted without changing the root position, that is, the root of the central incisor in the visualization mark and the root position in the lateral cephalogram remain relatively unchanged, that is, the root of the central incisor before and after the orthodontic adjustment remains unchanged. At this time, only the relative position of the visualization mark and the lateral cephalogram is rotated and adjusted, that is, the other positions of the central incisor in the visualization mark are adjusted around the root position, and rotated in the plane where the current layer is located.

[0098] This adjustment operation can ensure that after the root of the central incisor is adjusted to the middle position of the jawbone, subsequent adjustments will not affect the previous adjustment results.

[0099] In this embodiment, in order to better demonstrate the adjustment process, after the orthodontic reference line is generated based on the visual mark and the forehead center point on the lateral skull film, the orthodontic reference line, the skull vertical direction, and the angle difference between the orthodontic reference line and the skull vertical direction can also be displayed. If these contents are displayed in another new layer, the layer displaying these contents can be the top layer.

[0100] Based on this display operation, in the scenario where the software automatically adjusts the visual identifier, displaying these contents allows the observer to see the adjustment process in real time; in the scenario where the visual identifier is adjusted manually, displaying these contents can assist the operator to see the accurate result after this adjustment in time, making it convenient to perform the adjustment operation next time.

[0101] In some embodiments, the predetermined orthodontic goal may include: the sagittal spacing of the crowns of the maxillary and mandibular central incisors, and / or the vertical coverage distance being within respective preset ranges.

[0102] Correspondingly, such as Figure 4a As shown, the above step 103 may include the following sub-steps:

[0103] Sub-step 1036: after each adjustment of the crown position of the mandibular central incisor corresponding to the visualization mark, generate a sagittal spacing of the crown of the mandibular central incisor relative to the crown of the maxillary central incisor in the lateral skull film; when the spacing exceeds a preset range, repeatedly adjust the position of the visualization mark and update the spacing until the updated spacing is within the preset range; and / or,

[0104] After each adjustment of the crown position of the mandibular central incisor corresponding to the visualization mark, a vertical coverage distance of the crown of the mandibular central incisor relative to the crown of the maxillary central incisor in the lateral skull film is generated; when the coverage distance exceeds a preset range, the position of the visualization mark is repeatedly adjusted and the coverage distance is updated until the updated coverage distance is within the preset range.

[0105] Specifically, for the predetermined orthodontic goal that the sagittal spacing between the crowns of the upper and lower central incisors is within a preset range, the relative positions of the visual marker and the cephalogram are adjusted accordingly, which may be:

[0106] like Figure 4b As shown, the crown position of the central incisor is indicated in the visual mark. By adjusting the crown position of the mandibular central incisor (C) corresponding to the visual mark, the sagittal spacing of the crown of the mandibular central incisor (C) relative to the crown of the maxillary central incisor (B) in the lateral cephalogram is changed to be within the preset spacing range. For example, the mandibular central incisor can be dragged to translate upward in the sagittal direction of its crown, or rotated around its root position, or both operations can be performed simultaneously. After each adjustment is completed, the operating software will generate the sagittal spacing between the crown of the mandibular central incisor corresponding to the visual mark after this adjustment and the crown of the maxillary central incisor in the lateral cephalogram. The spacing must meet the preset distance requirement before the adjusted visual mark can be determined to meet the predetermined orthodontic goal.

[0107] After the sagittal spacing between the crown of the mandibular central incisor corresponding to the visual mark after this adjustment and the crown of the maxillary central incisor in the lateral cephalogram is generated, the spacing can be verified, that is, it is determined whether the spacing exceeds the preset spacing range. If it exceeds, the position of the visual mark is adjusted again and the above spacing is updated until the updated spacing is within the preset spacing range. The number of times of adjusting the position of the visual mark and verifying the spacing can be multiple times until the spacing is within the preset spacing range.

[0108] Specifically, for the predetermined orthodontic goal that the vertical coverage distance of the crowns of the upper and lower central incisors is within a preset range, the relative positions of the visual marker and the cephalogram are adjusted accordingly, which can be:

[0109] like Figure 4bAs shown, the crown position of the central incisor is indicated in the visual mark. By adjusting the crown position of the mandibular central incisor (C) corresponding to the visual mark, the vertical coverage distance of the crown of the mandibular central incisor (C) relative to the crown of the maxillary central incisor (B) in the lateral cephalogram is changed to be within the preset distance range. For example, the mandibular central incisor can be dragged to translate upward in the sagittal direction of its crown, or rotated around its root position, or both operations can be performed simultaneously. After each adjustment is completed, the operating software will generate the vertical coverage distance between the crown of the mandibular central incisor corresponding to the visual mark after this adjustment and the crown of the maxillary central incisor in the lateral cephalogram. This distance must meet the preset distance requirement before the adjusted visual mark can be determined to meet the predetermined orthodontic goal.

[0110] After the vertical coverage distance between the crown of the mandibular central incisor corresponding to the visual mark after this adjustment and the crown of the maxillary central incisor in the lateral cephalogram is generated, the coverage distance can be verified, that is, to determine whether the coverage distance exceeds the preset coverage distance range. If exceeded, the position of the visual mark is adjusted again and the above-mentioned coverage distance is updated until the updated coverage distance is within the preset coverage distance range. The number of times of adjusting the position of the visual mark and verifying the coverage distance can be multiple times until the coverage distance is within the preset coverage distance range.

[0111] Sub-step 1033: confirming the target position of the central incisor according to the adjusted visual marker.

[0112] In this embodiment, by adjusting the crown position of the mandibular central incisor corresponding to the visual marker, the sagittal distance of the crown of the mandibular central incisor relative to the crown of the maxillary central incisor in the lateral skull film, and / or the vertical coverage distance are within the respective preset ranges; thereby achieving the predetermined orthodontic goals of the sagittal distance between the crowns of the central incisors of the upper and lower jaws and the vertical coverage distance.

[0113] In some embodiments, the predetermined orthodontic goal may include: the long axis of the central incisor is aligned with the direction of the orthodontic reference line.

[0114] Correspondingly, such as Figure 5a As shown, the above step 103 may include the following sub-steps:

[0115] Sub-step 1034: after each adjustment of the position of the visualization mark, an orthodontic reference line is generated based on the visualization mark and the forehead center point on the lateral skull film.

[0116] Among them, the definition and acquisition process of the orthodontic reference line in this embodiment can refer to the contents in the aforementioned embodiments and will not be repeated here.

[0117] Specifically, Figure 5b As shown, the visual mark includes the position of the key point used to form the orthodontic reference line, such as the position of the anterior end point (a2) of the coronal face of the central incisor (B). By adjusting the position of the central incisor corresponding to the visual mark, the position of the key point used to form the orthodontic reference line and the position of the long axis (L3) of the central incisor will be adjusted, so that the straight line passing through the key point and the forehead center point on the lateral skull film, i.e., the orthodontic reference line (L1), is as consistent as possible with the long axis (L3) of the central incisor. For example, the maxillary central incisor can be dragged to translate in the sagittal direction of its crown, or rotate around its root position, or both operations can be performed simultaneously; after each adjustment is completed, the operating software will generate the angle difference between the orthodontic reference line corresponding to the visual mark after this adjustment and the long axis of the central incisor. The larger the angle difference, the less consistent the direction of the corresponding orthodontic reference line is with the long axis of the central incisor. Conversely, the smaller the angle difference, the more consistent the direction of the corresponding orthodontic reference line is with the long axis of the central incisor.

[0118] Sub-step 1037: When the angle difference between the orthodontic reference line and the long axis of the central incisor exceeds a preset range, repeatedly adjusting the position of the visual marker and updating the orthodontic reference line until the updated angle difference is within the preset range.

[0119] Specifically, after the angle difference between the orthodontic reference line formed after the adjusted visual mark and the long axis of the central incisor is generated, the angle difference can be verified, that is, to determine whether the angle difference exceeds the preset angle difference range. If exceeded, the position of the visual mark is adjusted again and the orthodontic reference line is updated until the angle difference between the updated orthodontic reference line and the long axis of the central incisor is within the preset angle difference range. The number of times the position of the visual mark is adjusted and the angle difference is verified can be multiple times until the angle difference is within the preset angle difference range, and the angle difference range can be set within ±7 degrees.

[0120] Sub-step 1033: confirming the target position of the central incisor according to the adjusted visual marker.

[0121] In this embodiment, the visual mark is adjusted to drive the adjustment of the corresponding orthodontic reference line so that the angle difference between the orthodontic reference line and the long axis of the central incisor is within a preset range; thereby achieving the predetermined orthodontic goal between the orthodontic reference line and the long axis of the central incisor.

[0122] In some embodiments, the predetermined orthodontic goal may include: the mandibular central incisor is located sagittally posterior to the maxillary central incisor.

[0123] Correspondingly, such as Figure 6a As shown, the above step 103 may include the following sub-steps:

[0124] Sub-step 1038: After each adjustment of the mandibular central incisor position corresponding to the visualization mark, a sagittal position relationship between the mandibular central incisor corresponding to the visualization mark and the maxillary central incisor in the lateral cephalogram is generated.

[0125] Specifically, please refer to Figure 4b , the visual mark includes an indication of the sagittal upward position of the central incisor, and by adjusting the position of the mandibular central incisor corresponding to the visual mark, the sagittal positional relationship between the mandibular central incisor (C) and the maxillary central incisor (B) in the lateral cephalogram is changed to present a preset positional relationship, such as dragging the mandibular central incisor to translate in the sagittal upward direction of its crown, or rotating around its root position, or performing both operations simultaneously; after each adjustment, the operating software will generate the sagittal anterior-posterior positional relationship of the mandibular central incisor corresponding to the adjusted visual mark relative to the maxillary central incisor on the lateral cephalogram. This positional relationship needs to satisfy that the mandibular central incisor corresponding to the visual mark is located behind the maxillary central incisor in the sagittal direction in the lateral cephalogram before the adjusted visual mark can be determined to meet the predetermined orthodontic goal.

[0126] Sub-step 1039: When the mandibular central incisor corresponding to the visualization mark is located sagittally forward of the maxillary central incisor in the lateral skull film, repeatedly adjust the position of the visualization mark and update the positional relationship until the updated positional relationship satisfies that the mandibular central incisor corresponding to the visualization mark is located sagittally backward of the maxillary central incisor in the lateral skull film.

[0127] Specifically, after the sagittal position relationship between the mandibular central incisor corresponding to the visual mark after this adjustment and the maxillary central incisor in the lateral cephalogram is generated, the position relationship can be verified, that is, to determine whether the position relationship is that the mandibular central incisor corresponding to the visual mark is located sagittally forward of the maxillary central incisor in the lateral cephalogram; if it is sagittally forward, the position of the visual mark is adjusted again and the above position relationship is updated until the updated position relationship is that the mandibular central incisor corresponding to the visual mark is located sagittally backward of the maxillary central incisor in the lateral cephalogram. The number of times the position of the visual mark is adjusted and the position relationship is verified can be multiple times until the position relationship satisfies that the mandibular central incisor corresponding to the visual mark is located sagittally backward of the maxillary central incisor in the lateral cephalogram.

[0128] Sub-step 1033: confirming the target position of the central incisor according to the adjusted visual marker.

[0129] In this embodiment, the position of the mandibular central incisor corresponding to the visual marker is adjusted so that it is located sagittally posterior to the maxillary central incisor in the lateral skull film; thereby, the sagittal upward position relationship between the mandibular central incisor and the maxillary central incisor meets the predetermined orthodontic goal.

[0130] In some embodiments, the predetermined orthodontic goal may also include: user-defined adjustment information associated with appearance.

[0131] In addition to the adjustment angle of medical orthodontics, users can also customize some adjustment information related to appearance according to the patient's aesthetic expectations. These adjustment information clearly define the adjustment requirements of the user's desired adjustment visualization mark. In this embodiment, these user-defined adjustment information related to appearance can also be used as the predetermined orthodontic goal to be achieved by adjusting the visualization mark. In this embodiment, there is no limitation on the user-defined adjustment information. For example, the adjustment information associated with appearance may include: the sagittal position relationship information of the coronal plane between specific teeth, the position relationship information between a single tooth and the jawbone where the tooth is located, the position relationship information between the coronal plane of the tooth and the inner side of the lip, etc.

[0132] In some embodiments, the characteristic elements of the cephalogram may include a jaw plane line, and the characteristic elements on the digital orthodontic ruler may also include a jaw plane line. Accordingly, the above step 103 may specifically include: adjusting the relative position of the visualization mark and the cephalogram with the jaw plane line in the cephalogram aligned with the jaw plane line on the digital orthodontic ruler as a restriction.

[0133] Specifically, after the visual mark is initially formed based on the digital orthodontic ruler, the alignment operation between the characteristic elements on the digital orthodontic ruler and the characteristic elements on the lateral skull film has just been completed, and the alignment result also includes the alignment of the jaw plane line in the lateral skull film with the jaw plane line on the digital orthodontic ruler. Based on this, when the position of the visual mark is subsequently adjusted relative to the lateral skull film, the state of the jaw plane line in the lateral skull film and the jaw plane line on the digital orthodontic ruler being aligned can be maintained. In other words, the jaw plane line formed on the digital orthodontic ruler based on the adjusted central incisor position is still aligned with the jaw plane line of the central incisor in the lateral skull film.

[0134] In this embodiment, during the process of adjusting the position of the visual marker, the adjustment is performed with the jaw plane line in the lateral skull film aligned with the jaw plane line on the digital orthodontic ruler as the constraint; thereby achieving the constraint requirement that the jaw plane line does not change significantly before and after the adjustment.

[0135] In the following embodiments, the specific process of adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film in the above step 102 so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; obtaining the area where the central incisor is located on the lateral skull film, and forming a visual mark indicating the target position of the central incisor will be described in detail.

[0136] In some embodiments, since the central incisor includes a central incisor belonging to the maxilla and a central incisor belonging to the mandible, the above step 102 may include:

[0137] Adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler belonging to the maxilla are aligned with the characteristic elements in the lateral skull film; acquiring the area where the central incisor belonging to the maxilla on the lateral skull film is located to form a first visual mark indicating the target position of the central incisor belonging to the maxilla; and,

[0138] Adjust the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler belonging to the mandible are aligned with the characteristic elements in the lateral skull film; obtain the area where the central incisor belonging to the mandible on the lateral skull film is located, and form a second visual mark indicating the target position of the central incisor belonging to the mandible.

[0139] Specifically, when aligning the characteristic elements on the digital orthodontic ruler with the characteristic elements in the lateral skull radiograph, the alignment operation can be performed on the characteristic elements belonging to the upper jaw and the characteristic elements belonging to the lower jaw respectively. Figure 1c In the figure, a schematic diagram is shown after the alignment of the maxillary central incisor position on the digital orthodontic ruler and the mandibular central incisor position in the lateral cephalogram.

[0140] In one example, when it is necessary to simultaneously form the above-mentioned first visual identifier and the second visual identifier, the first visual identifier indicating the target position of the central incisor belonging to the maxilla can be formed first, and then the second visual identifier indicating the target position of the central incisor belonging to the mandible can be formed. That is, after completing the alignment of the characteristic elements belonging to the maxilla and forming the first visual identifier indicating the target position of the central incisor belonging to the maxilla, the alignment of the characteristic elements belonging to the mandible is completed, and the second visual identifier indicating the target position of the central incisor belonging to the mandible is formed. In this way, the central incisor of the mandible is located sagittally forward of the central incisor of the maxilla in the determined target positions of the central incisors of the maxilla, thereby avoiding the occurrence of crossbite.

[0141] In some embodiments, in adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film, some operation links may also be performed concomitantly.

[0142] In one example, during the adjustment process, the updated position of the characteristic elements on the digital orthodontic ruler after adjustment can be identified, and when the coordinate position of the updated position is less than a preset distance from the characteristic elements pre-marked in the lateral skull film, the characteristic elements on the digital orthodontic ruler are automatically adsorbed and aligned with the characteristic elements pre-marked in the lateral skull film.

[0143] The characteristic elements on the digital orthodontic ruler and the characteristic elements in the lateral cephalogram include but are not limited to the root point and the cusp point respectively.

[0144] During the adjustment process, the position of the characteristic elements on the digital orthodontic ruler is continuously updated and gradually approaches the position of the corresponding characteristic elements in the lateral skull film to be aligned. In order to achieve rapid alignment, the coordinate positions of these characteristic elements can be marked in advance in the lateral skull film. When the coordinate positions of the characteristic elements on the digital orthodontic ruler and the characteristic elements pre-marked in the lateral skull film are adjusted to be less than a preset distance, the operating software can control the characteristic elements on the digital orthodontic ruler to automatically adsorb to the coordinate positions of the characteristic elements pre-marked in the lateral skull film, so as to achieve rapid alignment of the coordinate positions of the characteristic elements of the two. For example, this automatic adsorption method can achieve rapid alignment of the root points and cusp points on the digital orthodontic ruler with the root points and cusp points in the lateral skull film.

[0145] In one example, the specific operation of adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film may include:

[0146] The digital orthodontic ruler is scaled, translated and rotated to align the roots and cusps of the central incisor on the digital orthodontic ruler in the same jaw position with the roots and cusps of the central incisor in the lateral cephalogram, and to align the jaw plane line on the digital orthodontic ruler in the same jaw with the jaw plane line in the lateral cephalogram.

[0147] In this embodiment, in the process of adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film, when the coordinate position of the characteristic elements on the digital orthodontic ruler and the characteristic elements pre-marked in the lateral skull film is less than the preset distance, the characteristic elements on the digital orthodontic ruler and the characteristic elements on the lateral skull film can be quickly aligned by using the control method of automatic adsorption of the characteristic elements. In addition, the alignment is achieved by scaling, translating and rotating the digital orthodontic ruler, which makes the operation more flexible and improves the operation efficiency.

[0148] In the following embodiments, a preprocessing operation is performed on the lateral skull film before loading the lateral skull film to be measured.

[0149] In some embodiments, before loading the cephalometric film to be measured, the following steps may also be included:

[0150] Determine the position of the central incisor on the original lateral skull film and the position of the jaw plane line of the jaw where the central incisor is located, and mark the characteristic elements indicating the position of the central incisor and the characteristic elements indicating the position of the jaw plane line of the jaw where the central incisor is located on the original lateral skull film to form a lateral skull film to be measured.

[0151] Specifically, the original lateral skull film obtained from the original channel does not mark the position of the characteristic elements that need to be processed in this application. Therefore, it is necessary to perform relevant preprocessing on the original lateral skull film, that is, by performing image recognition and other processing on the elemental lateral skull film, the position of the central incisor on the original lateral skull film and the position of the jaw plane line of the jaw where the central incisor is located are determined, and the characteristic elements indicating the position of the central incisor and the characteristic elements indicating the position of the jaw plane line of the jaw where the central incisor is located are marked on the original lateral skull film to form the lateral skull film to be measured.

[0152] In one example, the process of determining the position of the jaw plane line of the central incisor on the original cephalogram may include:

[0153] Determine the position of the first molar on the original lateral skull film, and use the straight line formed by the occlusal surfaces of the central incisor and the first molar on the original lateral skull film as the jaw plane line position of the jaw where the central incisor is located.

[0154] Specifically, the positions of the first molar and the central incisor in the original lateral skull film can be determined by first performing image recognition on the original lateral skull film, and then the straight line formed by the occlusal surfaces of the central incisor and the first molar on the original lateral skull film on the lateral skull film can be determined as the jaw plane line position of the jaw where the central incisor is located.

[0155] In this embodiment, the lateral cephalogram to be loaded is formed by pre-marking the central incisor position on the original lateral cephalogram and the jaw plane line position of the jaw where the central incisor is located as characteristic elements. Therefore, after the lateral cephalogram is loaded, the position and size of the digital orthodontic ruler relative to the lateral cephalogram can be quickly adjusted to align the characteristic elements on the digital orthodontic ruler with the characteristic elements in the lateral cephalogram.

[0156] Through the method steps in the above embodiment, the visual mark is adjusted, and the final result of the central incisor target position is determined after meeting various predetermined orthodontic goals. Figure 6b shown.

[0157] Through the method steps in the above embodiment, the visual mark is adjusted, and the final central incisor target position (maxillary central incisor target position B and mandibular central incisor target position C) is determined after meeting various predetermined orthodontic goals. Figure 6b shown.

[0158] In another embodiment, based on the dental measurement method in any of the above embodiments, this embodiment also provides a method for tooth arrangement, comprising: using the dental measurement method as described in any of the above embodiments to measure the target position of the central incisor on the lateral skull film to be arranged, and arranging the teeth based on the target position of the central incisor.

[0159] Another embodiment of the present invention relates to an electronic device, such as Figure 7 As shown, it includes at least one processor 702; and a memory 701 that is communicatively connected to the at least one processor 702; wherein the memory 701 stores instructions that can be executed by the at least one processor 702, and the instructions are executed by the at least one processor 702 so that the at least one processor 702 can execute any of the above method embodiments.

[0160] The memory 701 and the processor 702 are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors 702 and the memory 701 together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor 702 is transmitted on a wireless medium via an antenna, and further, the antenna also receives data and transmits the data to the processor 702.

[0161] The processor 702 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 701 can be used to store data used by the processor 702 when performing operations.

[0162] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

[0163] The above-mentioned product can execute the method provided in the implementation mode of this application, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not fully described in this implementation mode, please refer to the method provided in the implementation mode of this application.

[0164] The embodiments of the present application relate to a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the above method embodiments are implemented.

[0165] That is, those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0166] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A dental measurement method, characterized in that: include: Load the cephalogram and digital orthodontic ruler to be measured; Adjust the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; obtain the area where the central incisor is located on the lateral skull film to form a visual mark indicating the target position of the central incisor; wherein the characteristic elements include characteristic elements indicating the position of the central incisor and characteristic elements indicating the position of the jaw plane line; The relative position of the visualization mark and the lateral skull film is adjusted so that the adjusted visualization mark meets the predetermined orthodontic goal, and the target position of the central incisor is confirmed according to the adjusted visualization mark.

2. The dental measurement method according to claim 1, characterized in that: The predetermined orthodontic goal includes: the root of the central incisor is located in the middle of the jawbone of the jaw; The adjusting the relative position of the visual marker and the cephalographic film so that the adjusted visual marker meets the predetermined orthodontic goal includes: After each adjustment of the root position of the central incisor corresponding to the visual marker, a position error between the root position and the center point of the jawbone of the jaw to which the central incisor belongs on the lateral cephalogram is generated; When the position error exceeds a preset range, the position of the visual marker is repeatedly adjusted and the position error is updated until the updated position error is within the preset range.

3. The dental measurement method according to claim 1, characterized in that: The predetermined orthodontic goals include: the orthodontic reference line is consistent with the vertical direction of the skull; The adjusting the relative position of the visual marker and the cephalographic film so that the adjusted visual marker meets the predetermined orthodontic goal includes: After each adjustment of the position of the visualization mark, an orthodontic reference line is generated based on the visualization mark and the forehead center point on the lateral skull film; When the angle difference between the orthodontic reference line and the vertical direction of the skull exceeds a preset range, the position of the visual marker is repeatedly adjusted and the orthodontic reference line is updated until the angle difference between the updated orthodontic reference line and the vertical direction of the skull is within a preset range.

4. The dental measurement method according to claim 3, characterized in that: The visual marker includes a root contour of a central incisor, and the adjusting the relative position of the visual marker and the cephalographic film includes: The root of the central incisor in the visualization mark and the root position in the lateral skull film are kept relatively unchanged, and the relative position of the visualization mark and the lateral skull film is adjusted by rotation.

5. The dental measurement method according to claim 3, characterized in that: The visual marker includes the coronal contour of the central incisor, and the process of obtaining the orthodontic reference line includes: A straight line passing through the anterior endpoint of the coronal face of the central incisor in the visual mark and the center point of the forehead on the lateral skull film is used as the orthodontic reference line.

6. The dental measurement method according to claim 3, characterized in that: The method further comprises: After the orthodontic reference line is generated based on the visual mark and the forehead center point on the lateral skull film, the orthodontic reference line, the skull vertical direction, and the angle difference between the orthodontic reference line and the skull vertical direction are displayed.

7. The dental measurement method according to claim 1, characterized in that: The predetermined orthodontic goals include: the spacing of the crowns of the upper and lower central incisors in the sagittal direction, and / or the coverage distance in the vertical direction are within respective preset ranges; The adjusting the relative position of the visual marker and the cephalographic film so that the adjusted visual marker meets the predetermined orthodontic goal includes: After each adjustment of the crown position of the mandibular central incisor corresponding to the visual marker, a sagittal spacing of the crown of the mandibular central incisor relative to the crown of the maxillary central incisor in the lateral skull film is generated; when the spacing exceeds a preset range, the position of the visual marker is repeatedly adjusted and the spacing is updated until the updated spacing is within the preset range; and / or, After each adjustment of the crown position of the mandibular central incisor corresponding to the visualization mark, a vertical coverage distance of the crown of the mandibular central incisor relative to the crown of the maxillary central incisor in the lateral cephalogram is generated; When the coverage distance exceeds a preset range, the position of the visual marker is repeatedly adjusted and the coverage distance is updated until the updated coverage distance is within the preset range.

8. The dental measurement method according to claim 1, characterized in that: The predetermined orthodontic goals include: the long axis of the central incisor is consistent with the direction of the orthodontic reference line; The adjusting the relative position of the visual marker and the cephalographic film so that the adjusted visual marker meets the predetermined orthodontic goal includes: After each adjustment of the position of the visualization mark, an orthodontic reference line is generated based on the visualization mark and the forehead center point on the lateral skull film; When the angle difference between the orthodontic reference line and the long axis of the central incisor exceeds a preset range, the position of the visual marker is repeatedly adjusted and the orthodontic reference line is updated until the updated angle difference is within the preset range.

9. The dental measurement method according to claim 1, characterized in that: The predetermined orthodontic goal includes: the mandibular central incisor is located sagittally posterior to the maxillary central incisor; The adjusting the relative position of the visual marker and the cephalographic film so that the adjusted visual marker meets the predetermined orthodontic goal includes: After each adjustment of the mandibular central incisor position corresponding to the visualization mark, a sagittal position relationship between the mandibular central incisor corresponding to the visualization mark and the maxillary central incisor in the lateral cephalogram is generated; When the mandibular central incisor corresponding to the visualization mark is located sagittally forward of the maxillary central incisor in the lateral skull film, the position of the visualization mark is repeatedly adjusted and the positional relationship is updated until the updated positional relationship satisfies the condition that the mandibular central incisor corresponding to the visualization mark is located sagittally backward of the maxillary central incisor in the lateral skull film.

10. The dental measurement method according to claim 1, characterized in that: The predetermined orthodontic target also includes user-defined adjustment information associated with appearance.

11. The dental measurement method according to claim 1, characterized in that: In adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film, the method further includes: During the adjustment process, the updated position of the characteristic elements on the digital orthodontic ruler after adjustment is identified, and when the coordinate position of the updated position is less than a preset distance from the characteristic elements pre-marked in the lateral skull film, the characteristic elements on the digital orthodontic ruler are automatically adsorbed and aligned with the characteristic elements pre-marked in the lateral skull film.

12. The dental measurement method according to claim 11, characterized in that: The characteristic elements on the digital orthodontic ruler and the characteristic elements in the cephalogram include root points and cusp points respectively.

13. The dental measurement method according to claim 12, characterized in that: The step of adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film comprises: The digital orthodontic ruler is scaled, translated and rotated to align the roots and cusps of the central incisor on the digital orthodontic ruler in the same jaw position with the roots and cusps of the central incisor in the lateral skull film, and to align the jaw plane line on the digital orthodontic ruler in the same jaw with the jaw plane line in the lateral skull film.

14. The dental measurement method according to claim 1, characterized in that: The characteristic elements of the lateral skull film include the jaw plane line, the characteristic elements on the digital orthodontic ruler include the jaw plane line, and the adjusting the relative position of the visual mark and the lateral skull film includes: The relative position of the visualization mark and the lateral skull film is adjusted with the jaw plane line in the lateral skull film aligned with the jaw plane line on the digital orthodontic ruler as a restriction.

15. The dental measurement method according to claim 1, characterized in that: The step of adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler are aligned with the characteristic elements in the lateral skull film; and obtaining the area where the central incisor is located on the lateral skull film to form a visual mark indicating the target position of the central incisor, comprises: Adjusting the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler belonging to the maxilla are aligned with the characteristic elements in the lateral skull film; acquiring the area where the central incisor belonging to the maxilla on the lateral skull film is located to form a first visual mark indicating the target position of the central incisor belonging to the maxilla; and, Adjust the position and size of the digital orthodontic ruler relative to the lateral skull film so that the characteristic elements on the digital orthodontic ruler belonging to the mandible are aligned with the characteristic elements in the lateral skull film; obtain the area where the central incisor belonging to the mandible on the lateral skull film is located, and form a second visual mark indicating the target position of the central incisor belonging to the mandible.

16. The dental measurement method according to claim 15, characterized in that: The method further comprises: When the first visualization mark and the second visualization mark need to be formed simultaneously, the first visualization mark indicating the target position of the central incisor belonging to the maxilla is formed first, and then the second visualization mark indicating the target position of the central incisor belonging to the mandible is formed.

17. The dental measurement method according to claim 1, characterized in that: Before loading the lateral skull film to be measured, the method further comprises: Determine the position of the central incisor on the original lateral skull film and the position of the jaw plane line of the jaw where the central incisor is located, and mark the characteristic elements indicating the position of the central incisor and the characteristic elements indicating the position of the jaw plane line of the jaw where the central incisor is located on the original lateral skull film to form the lateral skull film to be measured.

18. The dental measurement method according to claim 17, characterized in that: Determining the jaw plane line position of the jaw where the central incisor is located on the original lateral skull film includes: Determine the position of the first molar on the original lateral skull film, and use the straight line formed by the occlusal surfaces of the central incisor and the first molar on the original lateral skull film as the jaw plane line position of the jaw where the central incisor is located.

19. The dental measurement method according to claim 1, characterized in that: The characteristic elements may be expressed in the form of at least one of a point, a line, and a graphic.

20. A method for arranging teeth, characterized in that: include: The dental measurement method according to any one of claims 1 to 19 is used to measure the target position of the central incisor on the lateral skull radiograph of the teeth to be arranged, and the teeth are arranged based on the target position of the central incisor.

21. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the dental measurement method according to any one of claims 1 to 19, or the teeth arrangement method according to claim 20.

22. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the dental measurement method according to any one of claims 1 to 19 is implemented, or the teeth arrangement method according to claim 20 is implemented.

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