Automatic detection device and detection and evaluation method for maxillofacial appearance

Abstract

The invention belongs to the technical field of oral and maxillofacial orthodontics, and relates to a maxillofacial profile automatic detection device and a detection and evaluation method.The maxillofacial profile automatic detection device comprises a fixing head sleeve, a first ruler, a second ruler and a controller, the fixing head sleeve is annular, the first ruler is slidably connected with the outer ring of the fixing head sleeve, and the second ruler is connected with the first ruler through a second sliding block; the second sliding block is slidably connected with a first ruler in the vertical direction, a second ruler rotating shaft is connected with the second sliding block, and the first ruler and the second ruler are each provided with a graduated scale. The first vernier and the second vernier can slide in a reciprocating mode in the length direction of the first ruler and the length direction of the second ruler respectively. The first vernier and the second vernier are respectively provided with a counter for metering the sliding distance; according to the invention, accurate measurement, digital acquisition and storage of the dental and maxillofacial data of the person to be detected are realized through the dental and maxillofacial detection terminal, and the diagnosis efficiency and accuracy of orthodontic doctors are improved.

Description

Technical Field

[0001] This invention belongs to the field of oral and maxillofacial orthodontics and orthognathic technology, specifically relating to an automatic detection device and detection and evaluation method for maxillofacial shape. Background Technology

[0002] Orthognathic surgery is a comprehensive treatment method that aims to improve facial appearance, restore normal occlusal function, and enhance overall oral health by adjusting the positional relationship between teeth and jawbones. It primarily targets complex dentofacial deformities caused by abnormal jawbone development, with main objectives including improving facial appearance, optimizing chewing function, and promoting oral health. Orthognathic surgery is mainly used for severe skeletal malocclusions, such as underbite, protruding teeth, micrognathia, open bite, and asymmetric jaw, where simple orthodontic treatment alone is insufficient to achieve the desired results.

[0003] However, in the current field of maxillofacial orthodontics, there are no precise instruments for measuring the amount and angle of dentofacial deviation. Doctors primarily assess facial contours through visual evaluation, photographic measurement, and on-site ruler measurement, which cannot achieve precise detection and evaluation. Some doctors use pre- and post-operative photograph comparisons to assess or demonstrate post-operative results to patients. While this may appear to show some treatment effect, precise instrumental evaluation is still necessary to determine whether the optimal standard has been achieved.

[0004] Therefore, there is a need for a device or method that can accurately measure the dental and facial data of patients undergoing oral examination to solve the above-mentioned technical problems. Summary of the Invention

[0005] The present invention provides the following technical solution: an automatic detection device for jaw and facial shape, comprising: a fixed headgear, a first ruler, a second ruler, and a controller. The fixed headgear is an annular shape with adjustable head circumference and tightness. The first ruler is vertically set and slidably connected to the outer ring of the fixed headgear. The sliding direction of the first ruler is horizontal. A first locking device is provided at the point where the first ruler is slidably connected to the fixed headgear.

[0006] The second scale is connected to the first scale via a second slider. The second slider slides vertically to connect to the first scale. The second scale's pivot is connected to the second slider. A second locking device is provided at the second slider. The first and second scales are respectively provided with scales arranged along the length direction.

[0007] The first scale and the second scale are respectively equipped with a first vernier and a second vernier, which can slide back and forth along the length direction of the first scale and the length direction of the second scale, respectively; the first vernier and the second vernier are respectively equipped with counters to measure the sliding distance; the controller is electrically connected to the first vernier and the second vernier.

[0008] Preferably, the first and second verniers are respectively equipped with a colored laser indicator and a micro display, the micro display being used to display the moving distance of the vernier.

[0009] Preferably, the counters on the first and second verniers are micro-gear pedometers.

[0010] Preferably, the first scale is equipped with a verticality adjustment device, the second scale is equipped with a level; the second slider is equipped with a rotation angle counter for measuring the rotation angle of the second scale relative to the horizontal plane, the rotation angle counter is electrically connected to the controller, and the rotation angle counter is equipped with a rotation angle micro display.

[0011] Preferably, the first scale is slidably connected to the outer ring of the fixed headgear via a first slider. The first slider is a horizontally arranged triangle, with two corners of the first slider sliding in contact with the fixed headgear, and the third triangle of the first slider is connected to the first scale.

[0012] This invention also discloses an automatic detection and evaluation method for maxillofacial shape. This method uses the aforementioned automatic detection device for maxillofacial shape and includes the following steps:

[0013] Step S1: Place the fixing headgear on the forehead of the person to be tested along the horizontal plane, so that the first ruler is vertical and located on the side of the face of the person to be tested, and then tighten the fixing headgear and the first ruler.

[0014] Step S2: Collect the maxillofacial data of the subject to be tested. The maxillofacial data includes: distance a1 from the hairline to the glabella, distance a2 from the glabella to the subnasal point, distance a3 from the subnasal point to the submental point, offset b of the chin point relative to the midline, frontal inclination of the occlusal plane, and lateral inclination of the occlusal plane.

[0015] Step S3: Maxillofacial profile assessment, which includes: assessment of vertical trisection of the frontal view, assessment of the offset of the chin point relative to the midline of the face, assessment of the inclination of the occlusal plane, and assessment of the achievement of maxillofacial growth targets.

[0016] Step S4: Maxillofacial treatment assessment, which includes: frontal vertical trisection treatment assessment, chin point relative midline offset treatment assessment, occlusal plane inclination treatment assessment, and maxillofacial shape target achievement treatment assessment.

[0017] Preferably, in step 3, the evaluation of the frontal vertical trisection is as follows:

[0018] Frontal vertical trisection quantization value:

[0019]

[0020] Frontal vertical trisection evaluation value:

[0021] Where A represents the reference standard for the frontal vertical trisection data, and a0 represents the evaluation value of the frontal vertical trisection.

[0022] The offset of the chin point relative to the midline of the plane is evaluated as follows:

[0023] Where B represents the reference standard for the offset of the chin point from the midline of the plane, and b0 represents the evaluation value of the offset of the chin point relative to the midline of the plane.

[0024] The occlusal plane inclination was assessed as follows:

[0025]

[0026] Where C and D represent the reference standards for the frontal and lateral inclination of the occlusal plane, respectively, and e0 represents the evaluation value of the occlusal plane inclination.

[0027] The assessment of maxillofacial growth achievement is as follows:

[0028] Quantitative assessment values ​​of maxillofacial standard attainment for the test subject:

[0029] f0=α×a0+β×b0+γ×e0

[0030] Maxillofacial assessment results of the examinee:

[0031] Wherein, F represents the reference standard for the maxillofacial assessment value of the subject, f0 represents the quantitative assessment value of the subject's maxillofacial compliance; α represents the assessment coefficient of the vertical trisection data of the frontal profile, β represents the assessment coefficient of the offset between the chin point and the midline of the face, and γ represents the assessment coefficient of the occlusal plane inclination.

[0032] The evaluation result is f=1, indicating that the evaluation meets the standard; f=0, indicating that the evaluation does not meet the standard.

[0033] Preferably, in step 4, the frontal vertical trisection treatment assessment is as follows:

[0034]

[0035] Among them, a start a end These represent the initial and final values ​​of the frontal vertical trisection quantification during the treatment assessment period, respectively, and a. process Indicates the assessment value of the treatment period in the frontal vertical trisection, a pro-res This indicates the results of the treatment period assessment for a frontal vertical trisection.

[0036] Treatment period assessment results a pro-res =1, assessment results meet the standard or assessment results indicate normal treatment, a pro-res =0, the assessment result is not up to standard or the assessment result indicates abnormal treatment progress.

[0037] The treatment assessment of the chin point relative to the midline offset is as follows:

[0038]

[0039] Among them, b start b end These represent the initial and final values ​​of the chin point's offset from the midline of the face during the treatment assessment period, respectively. process This indicates the treatment period assessment value of the chin point's relative midline offset, b. pro-res This indicates the assessment results of the chin point's offset from the midline of the face during the treatment period.

[0040] Treatment period assessment results b pro-res =1, the evaluation result meets the standard, b pro-res =0, the evaluation result is not up to standard.

[0041] The treatment assessment for occlusal plane tilt is as follows:

[0042]

[0043] Among them, c start c end These represent the initial and final values ​​of the occlusal plane inclination during the treatment assessment period, respectively, and d. start d end These represent the initial and final values ​​of the lateral inclination of the occlusal plane, respectively, and e. start e end These represent the initial and final values ​​of the occlusal plane inclination assessment, respectively, and e. process This indicates the treatment period assessment value of the chin point's relative midline offset, e. pro-res This indicates the results of the treatment assessment of the occlusal plane tilt.

[0044] Treatment period assessment results e pro-res =1, the evaluation result meets the standard, e pro-res =0, the evaluation result is not up to standard.

[0045] The assessment for achieving the treatment goals for maxillofacial contour is as follows:

[0046]

[0047] Where α represents the evaluation coefficient for the vertical trisection of the frontal view, β represents the evaluation coefficient for the offset between the chin point and the midline of the face, γ represents the evaluation coefficient for the occlusal plane inclination, and f process This indicates the quantitative assessment value of the patient's maxillofacial target achievement during the treatment period, f pro-res This indicates the results of the maxillofacial target achievement assessment for the patient during the treatment period.

[0048] The beneficial effects of this invention are:

[0049] 1. This invention enables accurate measurement of dental and facial data of patients undergoing oral examination.

[0050] 2. This invention enables the automatic digital acquisition and storage of dental and facial data of patients undergoing oral examination.

[0051] 3. This invention can realize the automatic assessment of the growth of the teeth and jaws of the patient and the accurate assessment of the treatment effect of the teeth and jaws.

[0052] 4. This invention enables precise measurement, digital acquisition, and storage of dental and facial data of patients through a dental and maxillofacial examination terminal, improving the efficiency and accuracy of auxiliary examinations for orthodontists. Through automatic assessment of the dental and maxillofacial appearance of patients and precise evaluation of treatment effects, it enhances the efficiency and accuracy of evaluating treatment outcomes. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of an embodiment of the automatic detection device and detection and evaluation method for maxillofacial shape according to the present invention;

[0054] Figure 2 This is a schematic diagram illustrating the measurement of frontal vertical trisection data using a dental and facial detection terminal according to the present invention;

[0055] Figure 3 This is a schematic diagram illustrating the measurement of the offset between the chin point and the midline of the face using a dental and facial detection terminal according to the present invention.

[0056] Figure 4 This is a schematic diagram illustrating the measurement of the frontal tilt of the occlusal plane using a dental and facial detection terminal according to the present invention.

[0057] Figure 5 This is a schematic diagram illustrating the measurement of the lateral inclination of the occlusal plane using a dental and facial detection terminal according to the present invention.

[0058] Figure 6 This is a top view of the automatic jaw and facial contour detection device of the present invention;

[0059] Figure 7 For the present invention Figure 6 A magnified view of a portion of the image from direction A.

[0060] In the figure, 1. Fixed headgear; 2. First scale; 3. Second scale; 4. Controller; 5. Colored laser indicator; 6. Micro display; 21. First slider; 22. First vernier; 23. First locking device; 31. Second slider; 32. Second vernier; 33. Rotation angle counter; 34. Rotation angle micro display. Detailed Implementation

[0061] The related technologies of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0062] like Figures 1-7 As shown, the automatic dental and facial detection instrument of this embodiment includes a dental and facial detection terminal and an analysis and evaluation system.

[0063] The dental and maxillofacial examination terminal includes a fixed headgear 1, a first scale 2 connected to the fixed headgear 1, a second scale 3 connected to the first scale 2, and a wireless controller 4.

[0064] The fixed headgear 1 is connected to the first ruler 2 via a connector. The connection between the first ruler 2 and the fixed headgear 1 is that it can be translated, rotated freely in multiple directions, and has a locking function.

[0065] The connector includes: a damped spherical connector at one end, which connects to the fixed headgear 1 and can rotate with multiple degrees of freedom, facilitating adjustment of the spatial position of the dental and facial examination terminal; and a translational sleeve connector at the other end, which connects to the first scale 2, enabling the first scale 2 to translate within the sleeve.

[0066] The first scale 2 includes: graduations on one side, with the smallest graduation being 1 millimeter. The first scale 2 is equipped with a level indicator perpendicular to the scale surface.

[0067] The first scale 2 is equipped with a detachable floating colored laser indicator 5 perpendicular to the long side of the first scale 2. The indicator is equipped with a micro gear pedometer to collect the translation distance of the laser indicator. The indicator is equipped with a micro display 6 to display the translation distance. The displayed number can be reset to zero.

[0068] The second scale 3 is connected to the first scale 2 via a connector. The connection between the second scale 3 and the first scale 2 is that it can be translated, rotated 180 degrees in a plane, easily disassembled, and has a locking function.

[0069] The connector includes: a sleeve connector with damped ends, connected to the first scale 2 and the second scale 3 respectively; a micro-gear pedometer is installed inside the sleeve connector to collect the translational distance of the second scale 3 relative to the first scale 2; and a damped circular gear connector in the middle of the connector to collect the rotational angles at both ends of the connector (i.e., the second scale 3 relative to the first scale 2). A micro-display 6 is located on the outside of the sleeve, displaying the translational distance and rotational angle of the corresponding scale; the displayed value can be reset to zero.

[0070] The second scale 3 includes: a horizontal display parallel to the scale surface, with a scale 0 at the center of the scale, and scales increasing towards both ends, with a minimum scale of 1 mm; and a detachable floating colored laser indicator 5 perpendicular to the long side of the second scale 3, with a micro-gear pedometer inside the indicator to collect the translation distance of the laser indicator, and a micro-display 6 to display the translation distance, the displayed number of which can be reset to zero.

[0071] The wireless controller 4 mainly includes function buttons for confirming the vertical trisection data of the frontal view, confirming the offset data between the chin point and the midline of the face, confirming the frontal tilt data of the occlusal plane, confirming the lateral tilt data of the occlusal plane, laser indicator switch, and one-key zeroing of connector data. The controller mainly includes function buttons for confirming data acquisition, zeroing acquired data, and switching the laser indicator on and off.

[0072] The analysis and evaluation system can be deployed on computers or mobile devices, and mainly includes functions such as user management, patient management, maxillofacial data acquisition, maxillofacial shape assessment, and maxillofacial treatment assessment. User management mainly includes user registration, user login, and password modification functions. Patient management mainly includes functions such as adding, deleting, modifying, and querying patient accounts.

[0073] (I) Maxillofacial data acquisition function mainly collects maxillofacial data information and acquisition time. Maxillofacial data information includes, but is not limited to, frontal vertical trisection data (distance a1 from hairline to glabella, distance a2 from glabella to subnasal point, distance a3 from subnasal point to subchinal point), chin point offset relative to midline b, frontal inclination of occlusal plane c, lateral inclination of occlusal plane d, etc.

[0074] (ii) Maxillofacial shape assessment function, which mainly assesses the current maxillofacial shape, including four aspects: vertical trisection assessment of frontal shape, assessment of the offset of the chin point relative to the midline of the face, assessment of the inclination of the occlusal plane, and assessment of the achievement of maxillofacial growth standards.

[0075] 1. Frontal vertical trisection assessment mainly involves normalizing and quantifying the frontal vertical trisection data (distance a1 from the hairline to the glabella, distance a2 from the glabella to the subnasal point, and distance a3 from the subnasal point to the subchinal point). Based on the reference standard (0-A) for frontal vertical trisection data of the subjects of the corresponding gender and age, the frontal vertical trisection assessment value a0 is calculated to obtain the frontal vertical trisection assessment conclusion. The specific algorithm is as follows:

[0076] Frontal vertical trisection quantization value:

[0077]

[0078] Frontal vertical trisection evaluation value:

[0079]

[0080] 2. The assessment of the chin point's offset relative to the plane midline mainly involves calculating the chin point's offset relative to the plane midline, b, based on the offset b between the chin point and the plane midline, combined with the reference standard for chin point offset relative to the plane midline (0~B). This assessment determines whether the chin point's offset relative to the plane midline is within the normal range. The specific algorithm is as follows:

[0081] Chin point offset relative to the midline of the plane:

[0082]

[0083] 3. Occlusal plane inclination assessment mainly involves calculating the occlusal plane inclination value e0 based on the frontal inclination (c), lateral inclination (d), and reference standards for frontal and lateral inclination (0-D), to determine if the occlusal plane inclination is within the normal range. The specific algorithm is as follows:

[0084] Assessment value of occlusal plane inclination:

[0085]

[0086] 4. The assessment of maxillofacial conformation compliance mainly involves assigning weighting coefficients to the following data: vertical trisection assessment value a0 for the frontal view, offset of the chin point relative to the midline assessment value b0, and occlusal plane inclination assessment value e0. These coefficients are: α for the vertical trisection data of the frontal view, β for the offset of the chin point relative to the midline assessment value, and γ for the occlusal plane inclination assessment value. The quantitative assessment value f0 for the subject's maxillofacial conformation compliance is then calculated based on this coefficient. Combined with the subject's maxillofacial assessment value reference standard (0–F), the compliance of the maxillofacial conformation is evaluated. The specific algorithm is as follows:

[0087] Quantitative assessment values ​​of maxillofacial standard attainment for the test subject:

[0088] f0=α×a0+β×b0+γ×e0

[0089] Maxillofacial assessment results of the examinee:

[0090] The evaluation result is f=1, indicating that the evaluation meets the standard; f=0, indicating that the evaluation does not meet the standard.

[0091] (III) Maxillofacial treatment assessment function, which mainly assesses the trend of changes in maxillofacial shape over a period of treatment, including four aspects: frontal vertical trisection treatment assessment, chin point relative midline offset treatment assessment, occlusal plane inclination treatment assessment, and maxillofacial shape target achievement treatment assessment.

[0092] 1. Frontal vertical trisection treatment assessment is an evaluation of the treatment progress based on frontal vertical trisection data over a specific treatment period. It is based on the initial value 'a' of the frontal vertical trisection quantification during the treatment assessment period.start Final value a end Calculate the treatment period assessment value a for the frontal vertical trisection. process The results of the frontal vertical trisection treatment period assessment were obtained. pro-res .

[0093]

[0094] Treatment period assessment results a pro-res =1, assessment results meet the standard or assessment results indicate normal treatment, a pro-res =0, the assessment result is not up to standard or the assessment result indicates abnormal treatment progress.

[0095] 2. Chin point relative midline offset treatment assessment is an evaluation of the treatment progress of chin point relative midline offset over a period of time. It is based on the initial value b of the chin point relative midline offset during the treatment assessment period. start Final value b end Calculate the chin point offset relative to the midline of the face, and evaluate the treatment period value b. process The results of the treatment period assessment of the chin point's relative midline offset were obtained. pro-res .

[0096]

[0097] Treatment period assessment results b pro-res =1, the evaluation result meets the standard, b pro-res =0, the evaluation result is not up to standard.

[0098] 3. Occlusal plane tilt treatment assessment is an evaluation of the progress of occlusal plane tilt treatment over a period of time. It is based on the initial value c of the occlusal plane tilt during the assessment period. start Final value c end Initial value of d of the lateral inclination of the occlusal plane start Final value d end Initial value e of occlusal plane inclination assessment start Final value e end Calculate the chin point offset relative to the midline of the face, and evaluate the treatment period value e. process The results of the treatment period assessment of occlusal plane tilt were obtained. pro-res .

[0099]

[0100] Treatment period assessment results e pro-res =1, the evaluation result meets the standard, e pro-res =0, the evaluation result is not up to standard.

[0101] 4. Maxillofacial contour achievement assessment is an evaluation of the progress of maxillofacial contour achievement treatment over a period of time. It is based on the assessment value 'a' of the frontal vertical trisection treatment appliance. process Evaluation results a pro-res The evaluation value of the chin point offset relative to the midline of the plane, b. process Evaluation results b pro-res Assessment value of occlusal plane inclination e process Evaluation results e pro-res Combining the evaluation coefficients α (vertical trisection of the frontal profile), β (offset between the chin and midline), and γ (occlusal plane inclination), the quantitative assessment value f of maxillofacial target achievement during the treatment period for the subject was calculated. process The results of the maxillofacial target achievement assessment during the treatment period of the subject were obtained. pro-res .

[0102]

[0103] The usage method mainly involves the following steps:

[0104] 1. Registration and login of the user's account

[0105] 2. Measure the vertical trisection data of the front view.

[0106] ① Initialize and set up the dental and maxillofacial examination terminal. This mainly includes putting on the head cover for the subject according to the standard head-side wearing position; straightening the subject's head position; setting and locking the first scale 2 and the second scale 3;

[0107] ② Turn on the colored laser pointer 5, align the laser with the hairline of the person being tested, and reset the translation distance display to zero;

[0108] ③ Move the colored laser pointer 5 downwards so that the laser passes through the eyebrow point, and click the vertical trisection data confirmation button on the front of the wired controller to complete the first data measurement and save.

[0109] ④ Move the colored laser pointer 5 downwards so that the laser passes through the nose point, and click the vertical trisection data confirmation button on the front of the wired controller to complete the second data measurement and save.

[0110] ⑤ Move the colored laser pointer 5 downwards so that the laser passes through the chin point, and click the vertical trisection data confirmation button on the front of the wired controller to complete the third data measurement and save.

[0111] 3. Measure the offset between the chin point and the midline of the face.

[0112] ① Initialize and set up the dental and maxillofacial examination terminal. This mainly includes putting on the headgear according to the standard for wearing the head in the lateral position; straightening the head position of the subject; setting the first scale 2 to be perpendicular to the ground and locking it; setting the second scale 3 to be perpendicular to the first scale 2 and locking it.

[0113] ② Turn on the colored laser pointer 5 on the second scale 3, align the laser with the midline of the subject's face, and reset the translation distance display to zero; ③ Move the colored laser pointer 5 so that the laser aligns with the subject's chin, and click the confirmation button for the offset between the chin and the midline of the face on the wired controller to complete the data measurement and save.

[0114] 3. Measure the inclination of the occlusal plane on the front.

[0115] ① Initialize and set up the dental and maxillofacial examination terminal. This mainly includes putting on the headgear according to the standard for wearing the head in the lateral position; straightening the head position of the subject; setting the first scale 2 to be perpendicular to the ground and locking it; setting the second scale 3 to be perpendicular to the first scale 2;

[0116] ② Move the second scale 3 horizontally and adjust its angle appropriately so that it coincides with the line connecting the lower edge of the eye sockets. Return the display data of the second vernier 32 to zero.

[0117] ③ Install the occlusal plane plate on the mouth of the person to be tested, lower the second ruler 3 horizontally, and adjust the angle of the second ruler 3 appropriately so that the second ruler 3 coincides with the front of the occlusal plane plate. Click the confirmation button for the front tilt of the occlusal plane on the wired controller to complete the data measurement and save.

[0118] 4. Measure the lateral inclination of the occlusal plane.

[0119] ① Initialize and set up the dental and maxillofacial examination terminal. This mainly includes putting on the headgear according to the standard head-on wearing position for the subject; straightening the subject's head position; setting the first scale 2 to be perpendicular to the ground and locking it; setting the second scale 3 to be perpendicular to the first scale 2.

[0120] ② Move the second scale 3 horizontally and adjust its angle appropriately so that it coincides with the line connecting the lower edge of the eye socket and the upper edge of the external auditory canal. Set the display data of the second vernier 32 to zero.

[0121] ③ Install the occlusal plane plate on the mouth of the person to be tested, move the second ruler 3 downwards, and adjust the angle of the second ruler 3 appropriately so that the second ruler 3 coincides with the side of the occlusal plane plate. Click the confirmation button for the occlusal plane side inclination of the wired controller to complete the data measurement and save.

[0122] 5. Maxillofacial growth assessment. Assess the patient's dental and maxillofacial data to determine if they meet the required standards.

[0123] The maxillofacial examination was performed on a patient using a maxillofacial contour examination instrument and the initial maxillofacial examination data table for the patient is shown in Table 1 below:

[0124] Table 1. Initial maxillofacial examination data of a patient to be tested.

[0125] The maxillofacial profile of a patient was analyzed and evaluated using a maxillofacial contour detection and analysis system. The initial maxillofacial assessment results for the patient are shown in Table 2 below.

[0126]

[0127] Table 2. Initial maxillofacial examination and evaluation results of a patient.

[0128] 6. Maxillofacial treatment assessment. Analyze the trends in changes in the patient's dental and maxillofacial data.

[0129] A maxillofacial examination was performed on a patient after a period of maxillofacial treatment using a maxillofacial contour examination instrument and terminal. The resulting maxillofacial examination data table for the patient's follow-up visit is shown in Table 3 below:

[0130]

[0131] Table 3. Maxillofacial Examination Data of a Patient During Follow-up Visit

[0132] The maxillofacial profile of a subject was analyzed and evaluated using a maxillofacial contour assessment system. The results of the follow-up maxillofacial assessment for this subject are as follows:

[0133] As shown in Table 4:

[0134]

[0135] Table 4. Evaluation results of maxillofacial examination at a follow-up visit for a certain examinee.

[0136] The maxillofacial shape analysis and evaluation system was used to analyze and evaluate the trend of maxillofacial shape changes in a patient during the treatment period. The evaluation results of the patient's follow-up maxillofacial treatment are shown in Table 5 below:

[0137]

[0138] Table 5. Evaluation Results of Maxillofacial Treatment at Follow-up Visits for a Certain Patient

[0139] In summary, this invention enables precise measurement, digital acquisition, and storage of dental and facial data of patients through a dental and maxillofacial detection terminal, thereby improving the diagnostic efficiency and accuracy of orthodontists. Through automatic analysis and precise evaluation of the dental and maxillofacial data, the treatment outcomes for patients with dental and maxillofacial conditions are enhanced.

[0140] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An automatic detection device for maxillofacial shape, characterized in that, include: The fixed headgear (1), the first ruler (2), the second ruler (3), and the controller (4) are arranged in a ring shape with adjustable head circumference and tightness. The first ruler (2) is set vertically and is slidably connected to the outer ring of the fixed headgear (1). The sliding direction of the first ruler (2) is horizontal. A first locking device (23) is provided at the point where the first ruler (2) is slidably connected to the fixed headgear (1). The second scale (3) is connected to the first scale (2) via the second slider (31). The second slider (31) is slidably connected to the first scale (2) in the vertical direction. The second scale (3) is connected to the second slider (31) by a rotating shaft. A second locking device is provided at the second slider (31). The first scale (2) and the second scale (3) are respectively provided with scales arranged along the length direction; The first scale (2) and the second scale (3) are respectively provided with a first vernier (22) and a second vernier (32), and the first vernier (22) and the second vernier (32) can slide back and forth along the length direction of the first scale (2) and the length direction of the second scale (3), respectively; the first vernier (22) and the second vernier (32) are respectively provided with counters to measure the sliding distance; The controller (4) is electrically connected to the first vernier (22) and the second vernier (32) respectively.

2. The automatic detection device for maxillofacial shape according to claim 1, characterized in that, The first vernier (22) and the second vernier (32) are respectively equipped with a colored laser indicator (5) and a micro display (6), and the micro display (6) is used to display the moving distance of the vernier.

3. The automatic detection device for maxillofacial shape according to claim 1, characterized in that, The counters on the first vernier (22) and the second vernier (32) are micro gear pedometers.

4. The automatic detection device for maxillofacial shape according to claim 1, characterized in that, The first scale (2) is equipped with a verticality adjustment device, and the second scale (3) is equipped with a level; the second slider (31) is equipped with a rotation angle counter (33) for measuring the rotation angle of the second scale (3) relative to the horizontal plane, the rotation angle counter (33) is electrically connected to the controller (4), and the rotation angle counter (33) is equipped with a rotation angle micro display (34).

5. The automatic detection device for maxillofacial shape according to claim 1, characterized in that, The first scale (2) is slidably connected to the outer ring of the fixed headgear (1) via the first slider (21). The first slider (21) is a horizontally set triangle. The two corners of the first slider (21) slide to contact the fixed headgear (1) respectively. The first triangle of the first slider (21) is connected to the first scale (2).

6. An automatic detection and evaluation method for maxillofacial shape, characterized in that, The detection and evaluation method employs any one of the automatic maxillofacial shape detection devices according to claims 1 to 5, and the detection and evaluation method includes the following steps: Step S1: Place the fixed headgear (1) on the forehead of the person to be tested along the horizontal plane, so that the first ruler (2) is vertical and located on the side of the face of the person to be tested, and then tighten the fixed headgear (1) and the first ruler (2). Step S2: Collect the maxillofacial data information of the subject to be tested. The maxillofacial data information includes: distance a1 from the hairline to the glabella, distance a2 from the glabella to the subnasal point, distance a3 from the subnasal point to the submental point, offset b of the chin point relative to the midline, frontal inclination of the occlusal plane, and lateral inclination of the occlusal plane. Step S3, maxillofacial shape assessment, which includes: assessment of vertical trisection of frontal view, assessment of the offset of the chin point relative to the midline of the face, assessment of the inclination of the occlusal plane, and assessment of the achievement of maxillofacial growth targets; Step S4, maxillofacial treatment assessment, which includes: frontal vertical trisection treatment assessment, chin point relative midline offset treatment assessment, occlusal plane inclination treatment assessment, and maxillofacial shape target achievement treatment assessment.

7. The automatic detection and evaluation method for maxillofacial shape according to claim 6, characterized in that, In step 3, the evaluation of the frontal vertical trisection is as follows: Frontal vertical trisection quantization value: Frontal vertical trisection evaluation value: Where A represents the reference standard for the frontal vertical trisection data, and a0 represents the evaluation value of the frontal vertical trisection. The offset of the chin point relative to the midline of the plane is evaluated as follows: Where B represents the reference standard for the offset of the chin point from the midline of the plane, and b0 represents the evaluation value of the offset of the chin point relative to the midline of the plane; The occlusal plane inclination was assessed as follows: Wherein, C and D represent the reference standards for the frontal inclination of the occlusal plane and the lateral inclination of the occlusal plane, respectively, and e0 represents the evaluation value of the occlusal plane inclination. The assessment of maxillofacial growth achievement is as follows: Quantitative assessment values ​​of maxillofacial standard attainment for the test subject: f0=α×a0+β×b0+γ×e0 Results of the maxillofacial assessment of the examinee: Wherein, F represents the reference standard for the maxillofacial assessment value of the subject, f0 represents the quantitative assessment value of the subject's maxillofacial achievement; α represents the assessment coefficient of the vertical trisection data of the frontal profile, β represents the assessment coefficient of the offset between the chin point and the midline of the face, and γ represents the assessment coefficient of the occlusal plane inclination. The evaluation result is f=1, indicating that the evaluation meets the standard; f=0, indicating that the evaluation does not meet the standard.

8. The automatic detection and evaluation method for maxillofacial shape according to claim 6, characterized in that, In step 4, the frontal vertical trisection treatment assessment is as follows: Among them, a start a end These represent the initial and final values ​​of the frontal vertical trisection quantification during the treatment assessment period, respectively, and a. process Indicates the assessment value of the treatment period in the frontal vertical trisection, a pro-res This indicates the results of the treatment period assessment for a frontal vertical trisection. Treatment period assessment results a pro-res =1, assessment results meet the standard or assessment results indicate normal treatment, a pro-res =0, the assessment result is unsatisfactory or the assessment result indicates abnormal treatment progress; The treatment assessment of the chin point's offset relative to the midline is as follows: Among them, b start b end These represent the initial and final values ​​of the chin point's offset from the midline of the face during the treatment assessment period, respectively. process This indicates the treatment period assessment value of the chin point's relative midline offset, b. pro-res This indicates the results of the treatment period assessment of the chin point's offset from the midline of the face; Treatment period assessment results b pro-res =1, the evaluation result meets the standard, b pro-res =0, the evaluation result does not meet the standard; The treatment assessment of the occlusal plane tilt was as follows: Among them, c start c end These represent the initial and final values ​​of the occlusal plane inclination during the treatment assessment period, respectively, and d. start d end These represent the initial and final values ​​of the lateral inclination of the occlusal plane, respectively, and e. start e end These represent the initial and final values ​​of the occlusal plane inclination assessment, respectively, and e. process This indicates the treatment period assessment value of the chin point's relative midline offset, e. pro-res This indicates the results of the treatment assessment of occlusal plane tilt. Treatment period assessment results e pro-res =1, the evaluation result meets the standard, e pro-res =0, the evaluation result does not meet the standard; The assessment for achieving the target maxillofacial contour treatment is as follows: Where α represents the evaluation coefficient for the vertical trisection of the frontal view, β represents the evaluation coefficient for the offset between the chin point and the midline of the face, γ represents the evaluation coefficient for the occlusal plane inclination, and f process This indicates the quantitative assessment value of the patient's maxillofacial target achievement during the treatment period, f pro-res This indicates the results of the maxillofacial target achievement assessment for the patient during the treatment period.

Images