Orthodontic positioning facebow, position measurement and position prediction methods for maxillary incisors

Abstract

This invention discloses an orthodontic positioning facebow for maxillary incisors, along with methods for position measurement and prediction. The orthodontic positioning facebow includes a facebow body, an external auditory canal support, a nose bridge, a measuring rod, and a band. The facebow width adjustment knob is movably connected to the first end of an L-shaped support, causing the first end of the L-shaped support to move in opposite directions or away from each other when the facebow width adjustment knob is rotated. The measuring rod includes a measuring rod height adjustment bracket, an incisor positioning measuring ruler, and a glabella positioning measuring ruler. The incisor positioning measuring ruler is used to measure the position of the patient's maxillary incisors; the glabella positioning measuring ruler is used to measure the depth of the patient's soft tissue glabella. The measurement and prediction of the maxillary incisors are achieved using the positioning facebow. This invention applies the facebow to the measurement of the maxillary incisor position during orthodontic treatment, assisting orthodontists in monitoring the position of the maxillary incisors during treatment, avoiding the need for X-ray imaging, and offering simple clinical operation and good repeatability.

Description

Technical Field

[0001] This invention relates to the field of orthodontics in oral medicine, and more particularly to an orthodontic positioning facebow for maxillary incisors, a method for measuring and predicting their position. Background Technology

[0002] Currently, orthodontic treatment often requires extensive movement of the anterior teeth to improve the function and aesthetics of the patient's stomatognathic system. This is especially true for patients with maxillary protrusion, who often require extraction to retract the maxillary incisors and reduce facial protrusion. Therefore, many scholars have proposed aesthetic-oriented orthodontic treatment, considering the position of the maxillary incisors as a crucial factor influencing a patient's facial profile and smile aesthetics.

[0003] For patients undergoing orthodontic treatment involving tooth extraction, after determining the target position of the maxillary incisors before treatment, orthodontists can design different anchorage methods to retract the maxillary incisors. However, due to significant individual differences among patients and varying biomechanical responses to orthodontic forces, the actual retraction of the maxillary anterior teeth during treatment is often difficult to predict, and there is a lack of simple and convenient methods for monitoring the position of the maxillary anterior teeth clinically. Therefore, in many clinical cases, the position of the maxillary incisors after treatment is not the target position set before treatment, actually manifesting as insufficient or excessive retraction. Insufficient retraction results in poor facial profile improvement. Excessive retraction may be accompanied by complications such as alveolar bone loss and root resorption. In recent years, with the widespread use of implant anchorage, excessive retraction of the anterior teeth has become increasingly common, seriously affecting the dental and periodontal health of patients.

[0004] Achieving the target position of the maxillary incisors while avoiding insufficient or excessive retraction is a current clinical challenge in orthodontic extraction treatment. The difficulty in monitoring the position of the maxillary incisors during orthodontic treatment stems from the lack of a reference plane for evaluation. When the extraction space narrows, it's impossible to visually determine whether the anterior teeth shift backward or the posterior teeth shift forward. Currently, the only method to analyze the retraction of the anterior teeth is to take X-rays (lateral cephalometric radiographs or large-field cone-beam CT scans) during orthodontic treatment and then overlay and measure the pre-treatment and intra-treatment X-rays using software. However, due to ethical and health considerations to protect patients from additional X-ray radiation doses, X-rays cannot be required during orthodontic treatment to evaluate the position of the maxillary anterior teeth. Furthermore, this approach is cumbersome in clinical application, cannot be performed chairside, and cannot be adjusted in a timely manner based on examination results. Currently, the adjustment of the position of the maxillary anterior teeth during orthodontic treatment mainly relies on the clinical experience of orthodontists. There is a lack of objective indicators to guide the treatment process, and there is a lack of orthodontic examination devices and methods that are simple to operate clinically and can monitor or predict the position of the maxillary incisors at any time.

[0005] If the position of the maxillary incisors can be monitored throughout orthodontic treatment, and the anterior teeth are retracted according to the pre-set target position, ideal treatment results can be achieved. Therefore, monitoring the position of the maxillary incisors throughout orthodontic treatment is key to obtaining ideal results. Summary of the Invention

[0006] To address the problem that existing technologies for measuring the position of maxillary incisors rely on facial images and X-ray films, lacking a simple clinical operating orthodontic examination device that can monitor or predict the position of maxillary incisors at any time, this invention discloses an orthodontic positioning facebow for maxillary incisors, a method for measuring and predicting the position of maxillary incisors. The orthodontic positioning facebow can be operated clinically chairside and can monitor the position of maxillary incisors at any time, effectively simplifying the process of orthodontists determining the position of maxillary incisors in clinical practice. It has the advantages of simple clinical application, accurate measurement, and good repeatability.

[0007] This invention discloses an orthodontic positioning facebow for maxillary incisors, comprising a facebow body, an external auditory canal support, a nose bridge, a measuring rod, and a strip-shaped part;

[0008] The face bow body includes two L-shaped brackets, a face bow center adjustment bracket, and a face bow width adjustment knob;

[0009] The first ends of the two L-shaped brackets are respectively connected to the face bow center adjustment frame;

[0010] The second ends of the two L-shaped supports are respectively connected to the strip-shaped portion;

[0011] The face bow width adjustment knob is movably connected to the first end of the two L-shaped brackets, so that when the face bow width adjustment knob is rotated, the first ends of the two L-shaped brackets move towards or away from each other in the length direction of the face bow center adjustment frame.

[0012] The first end of the external auditory canal support is connected to the second end of the L-shaped bracket, and the second end of the external auditory canal support is placed in the patient's external auditory canal.

[0013] The nose bridge is installed on the patient-facing side of the face arch center adjustment frame;

[0014] The measuring rod includes a measuring rod height adjustment bracket, an incisor positioning measuring ruler, and an eyebrow point positioning measuring ruler; the measuring rod height adjustment bracket is installed on the face bow center adjustment bracket; the incisor positioning measuring ruler is movably installed at the lower end of the measuring rod height adjustment bracket, and the eyebrow point positioning measuring ruler is movably installed at the upper end of the measuring rod height adjustment bracket;

[0015] The incisor positioning measuring ruler is used to measure the position of the patient's maxillary incisors;

[0016] The eyebrow positioning measuring ruler is used to measure the depth of the patient's soft tissue eyebrow point.

[0017] The orthodontic positioning facebow for the maxillary incisors, the facebow center adjustment frame, includes a first groove structure with a hollow interior; the short sides of the two L-shaped supports both pass through the first groove structure;

[0018] The short sides of the two L-shaped supports are respectively provided with strip-shaped holes; the inner walls of the strip-shaped holes are provided with evenly distributed tooth-like structures; of the two strip-shaped holes, the upper inner wall of one strip-shaped hole is provided with a tooth-like structure, and the lower inner wall of the other strip-shaped hole is provided with a tooth-like structure.

[0019] The face bow width adjustment knob passes through the first slide groove structure and extends into the interior of the first slide groove structure, and engages with the toothed structures of the two L-shaped brackets respectively.

[0020] The external auditory canal support includes an external auditory canal support ball, an external auditory canal support ball height adjustment knob, an external auditory canal support ball depth adjustment knob, an external auditory canal support ball height adjustment bracket, and an external auditory canal support ball depth adjustment bracket;

[0021] The external auditory canal support ball is mounted on the external auditory canal support ball depth adjustment bracket;

[0022] The external auditory canal support ball height adjustment bracket includes a fixed part and a movable part; the fixed part is installed at the second end of the L-shaped bracket; the fixed part is a hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part.

[0023] The external auditory canal support ball height adjustment knob passes through the side wall of the external auditory canal support ball height adjustment bracket fixing part and extends into the interior of the slide rail structure, and is movably connected with the external auditory canal support ball height adjustment bracket moving part, so that when the external auditory canal support ball height adjustment knob is rotated, the external auditory canal support ball height adjustment bracket moving part moves along the slide rail structure of the external auditory canal support ball height adjustment bracket fixing part;

[0024] The external auditory canal support ball depth adjustment bracket includes a fixed part and a movable part; the fixed part is installed at the lower end of the movable part; the fixed part is a hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part.

[0025] The external auditory canal support ball depth adjustment knob passes through the side wall of the external auditory canal support ball depth adjustment bracket fixing part and extends into the interior of the slide rail structure, and is movably connected with the external auditory canal support ball depth adjustment bracket moving part, so that when the external auditory canal support ball depth adjustment knob is rotated, the external auditory canal support ball depth adjustment bracket moving part moves along the slide rail structure of the external auditory canal support ball depth adjustment bracket fixing part.

[0026] The measuring rod also includes a measuring rod height adjustment knob, an eyebrow point positioning measuring ruler depth adjustment knob and an eyebrow point positioning measuring ruler depth adjustment bracket, an incisor positioning measuring ruler height adjustment knob, an incisor positioning measuring ruler height adjustment bracket, an incisor positioning measuring ruler position adjustment knob and an incisor positioning measuring ruler position adjustment bracket.

[0027] The face bow center adjustment frame also includes a hollow second slide groove structure; the measuring rod height adjustment bracket extends into and passes through the second slide groove structure;

[0028] The measuring rod height adjustment knob passes through the side wall of the second slide groove structure and extends into the interior of the second slide groove structure, and is movably connected to the measuring rod height adjustment bracket, so that when the measuring rod height adjustment knob is rotated, the measuring rod height adjustment bracket moves along the second slide groove structure;

[0029] The eyebrow point positioning measuring ruler depth adjustment bracket is fixedly installed on the upper end of the measuring rod height adjustment bracket;

[0030] The depth adjustment bracket of the eyebrow point positioning measuring ruler is a hollow slide rail structure, and the eyebrow point positioning measuring ruler is a rod-shaped structure that extends into and passes through the slide rail structure.

[0031] The depth adjustment knob of the eyebrow point positioning measuring ruler passes through the side wall of the eyebrow point positioning measuring ruler depth adjustment bracket and extends into the interior of the slide rail structure, and is movably connected with the eyebrow point positioning measuring ruler, so that when the eyebrow point positioning measuring ruler depth adjustment knob is rotated, the eyebrow point positioning measuring ruler moves along the slide rail structure of the eyebrow point positioning measuring ruler depth adjustment bracket.

[0032] The incisor positioning measuring ruler height adjustment bracket includes a hollow first slide rail structure, and the lower end of the measuring rod height adjustment bracket extends into and passes through the first slide rail structure.

[0033] The height adjustment knob of the incisor positioning measuring ruler passes through the side wall of the height adjustment bracket of the incisor positioning measuring ruler and extends into the interior of the first slide rail structure, and is movably connected with the height adjustment bracket of the measuring rod, so that when the height adjustment knob of the incisor positioning measuring ruler is rotated, the height adjustment bracket of the incisor positioning measuring ruler moves along the height adjustment bracket of the measuring rod.

[0034] The incisor positioning measuring ruler height adjustment bracket includes a hollow second slide rail structure. The incisor positioning measuring ruler position adjustment bracket extends into and through the second slide rail structure. The incisor positioning measuring ruler position adjustment knob passes through the side wall of the incisor positioning measuring ruler height adjustment bracket and extends into the interior of the second slide rail structure, and is movably connected to the incisor positioning measuring ruler position adjustment bracket, so that when the incisor positioning measuring ruler position adjustment knob is rotated, the incisor positioning measuring ruler position adjustment bracket moves along the second slide rail structure.

[0035] The orthodontic positioning facebow for the maxillary incisors also includes a micro-switch module, a single-point laser height measurement module, and a signal processing and display module. The micro-switch module is installed at the contact points between the nasal tray and the external auditory canal support ball and the patient. The micro-switch module is used to acquire and detect the pressure between the nasal tray and the external auditory canal support ball and the patient's skin. When the pressure exceeds a threshold, the micro-switch module issues an alarm signal.

[0036] The single-point laser height measurement module is installed at the second end of the long side and the second end of the short side of the two L-shaped brackets. The number of single-point laser height measurement modules is at least three. The measuring direction of the single-point laser height measurement module is perpendicular to the plane where the L-shaped brackets are located. All single-point laser height measurement modules are installed at the same height of the orthodontic positioning surface bow.

[0037] The single-point laser height measurement module is used to measure the height at its installation point, obtain the height value, and send the height value to the signal processing and display module; the single-point laser height measurement module includes a single-point laser ranging submodule and a wireless communication submodule; the single-point laser ranging submodule is used to measure the distance from it to the ground, obtain the height value, and send the height value to the wireless communication submodule;

[0038] The wireless communication submodule is used to wirelessly transmit the received altitude value to the signal processing and display module;

[0039] The signal processing and display module is used to process the received height value to obtain the positioning surface bow plane vector; using the difference between the positioning surface bow plane vector and the true horizontal plane vector, a position correction value is obtained; using the position correction value, the measured position of the maxillary incisors is corrected to obtain the final position of the maxillary incisors.

[0040] This invention discloses a method for measuring maxillary incisors, which is implemented using the orthodontic positioning facebow for maxillary incisors, including:

[0041] S1, using the orthodontic positioning facebow of the maxillary incisor, determine the reference plane and position correction value;

[0042] S2. Using the incisor positioning measuring ruler and the glabella positioning measuring ruler, the position of the maxillary incisors is measured. The measured position of the maxillary incisors is corrected using the signal processing and display module to obtain the final position of the user's maxillary incisors.

[0043] Step S1 includes:

[0044] S11, Place the stabilizing pad above and behind the user's earlobe;

[0045] S12, adjust the height adjustment knob and depth adjustment knob of the external auditory canal support ball so that the external auditory canal support ball is located next to the user's external auditory canal;

[0046] S13, adjust the face bow width adjustment knob to allow the external auditory canal support ball to enter the cochlea on both sides of the user's ears, and at the same time make the stabilizing pad close to the scalp above and behind the user's auricle. When the micro-switch module issues an alarm signal, stop adjusting the face bow width adjustment knob.

[0047] S14, by adjusting the nose pad height adjustment knob and the nose pad depth adjustment knob, the nose pad body is positioned above the user's nose bridge, and the face arch is parallel to the ground. When the micro switch module issues an alarm signal, the adjustment of the nose pad depth adjustment knob is stopped.

[0048] S15, adjust the length of the neck strap and head strap so that the orthodontic positioning facebow of the maxillary incisor is fixed to the user's head;

[0049] S16, with the plane containing the face bow as the reference plane;

[0050] S17 uses a single-point laser height measurement module to measure the height at its installation point and obtain the height value;

[0051] S18, the signal processing and display module processes all the measured height values ​​to obtain the position correction value.

[0052] Step S2 includes:

[0053] S21, adjust the measuring rod height adjustment knob and the eyebrow point positioning measuring ruler depth adjustment knob to align the eyebrow point positioning measuring ruler with and contact the user's eyebrow point;

[0054] S22, using the eyebrow point positioning measuring ruler, measures the depth information of the user's soft tissue eyebrow point on the reference plane;

[0055] S23, expose the user's maxillary incisors; adjust the height adjustment knob and position adjustment knob of the incisor positioning measuring ruler so that the incisor positioning measuring ruler is aligned with the user's maxillary incisors;

[0056] S24, Adjust the incisor positioning measuring ruler depth adjustment knob to make the incisor positioning measuring ruler contact the position to be measured in the user's maxillary incisor;

[0057] S25, using the incisor positioning measuring ruler, measures the depth information of the user's maxillary incisor at the position to be measured on the reference plane;

[0058] S26. Using the depth information of the user's maxillary incisor at the position to be measured and the depth information of the user's soft tissue glabella, the first position of the user's maxillary incisor is obtained.

[0059] S27, the user's first position of maxillary incisors is input into the signal processing and display module. The signal processing and display module uses the position correction value to correct the first position of the user's maxillary incisors to obtain the final position of the user's maxillary incisors.

[0060] This invention discloses a method for predicting the position of the maxillary incisors during orthodontic treatment. The method utilizes the measurement method for the position of the maxillary incisors during orthodontic treatment to measure the user's maxillary incisor position information, including:

[0061] S101, at regular intervals, measure the position information of the user's maxillary incisors; use all the user's maxillary incisor position information to construct a position information sequence;

[0062] S102, Initialize the location prediction model;

[0063] S103, using the location information sequence, solve for the parameters of the location prediction model to obtain the optimal parameters of the location prediction model;

[0064] S104. Using the optimal parameters of the location prediction model, update the location prediction model to obtain the updated location prediction model.

[0065] S105. Using the updated position prediction model, the position information sequence is processed to obtain the position of the maxillary incisors at future times.

[0066] The method for predicting the position of the maxillary incisors in orthodontic treatment, wherein S103 includes:

[0067] S1031, calculate the cross-correlation function of the position sequence, perform Fourier transform on the cross-correlation function, and obtain the power spectrum of the position sequence;

[0068] S1032, using the power spectrum of the location sequence, construct the modified Yule-Walker equation for the location prediction model;

[0069] S1033, using the singular value decomposition method, solve the modified Yule-Walker equation to obtain an estimate of the order of the denominator polynomial;

[0070] S1034, Discretize the cross-correlation function to obtain the cross-correlation matrix; use the cross-correlation matrix as the augmented matrix; use the augmented matrix to establish the estimation error equation of the denominator polynomial parameters; with the goal of minimizing the estimation error of the denominator polynomial parameters, use the overall least squares method to solve the estimation error equation of the denominator polynomial parameters to obtain the estimated values ​​of the denominator polynomial parameters.

[0071] S1035, Using the singular value decomposition method, the cross-correlation matrix is ​​processed to obtain an estimate of the order of the numerator polynomial;

[0072] S1036. Using the cross-correlation matrix and the power spectrum of the position sequence, construct a nonlinear equation system for the molecular polynomial parameters; solve the nonlinear equation system to obtain the estimated values ​​of the molecular polynomial parameters.

[0073] S1037 uses the estimated values ​​of the denominator polynomial order, denominator polynomial parameters, numerator polynomial order, and numerator polynomial parameters as the optimal parameters for the location prediction model.

[0074] The beneficial effects of this invention are as follows:

[0075] 1. In view of the lack of a reference plane for evaluating the position of maxillary incisors in clinical practice, this invention is the first to apply the facebow to the measurement of the position of maxillary incisors during orthodontic treatment, avoiding the need for patients to take X-rays, with simple clinical operation, good repeatability, and reducing the need for orthodontists to use additional software for measurement and analysis.

[0076] 2. In view of the fact that the vertical line passing through the glabella is the ideal anterior boundary of the maxillary central incisor in the sagittal direction under the natural head position of the general population, this invention adds a glabella positioning measuring ruler to the orthodontic positioning facebow of the maxillary incisor. By comparing and analyzing the sagittal relationship between the maxillary incisor and the glabella under the natural head position of the patient, the position of the maxillary incisor is monitored when the anterior teeth are retracted during orthodontic treatment. Ideally, the measurement distance of the glabella should be the measurement distance of the maxillary incisor.

[0077] 3. The maxillary incisor positioning facebow disclosed in this invention can measure the clinical crown center point of the maxillary incisor, and can be used to formulate orthodontic treatment plans and determine the ideal position of the maxillary incisor. Measuring the distance change at the incisal edge point of the maxillary incisor during orthodontic treatment can reflect the anterior tooth retraction.

[0078] 4. This invention can predict the future position of a patient's maxillary incisors, improving the targeting and effectiveness of orthodontic treatment. Attached Figure Description

[0079] Figure 1 This is a schematic diagram of the orthodontic positioning facebow for maxillary incisors disclosed in this invention;

[0080] Figure 2 This is a side view of the orthodontic positioning facebow for the maxillary incisors disclosed in this invention;

[0081] Figure 3 This is a frontal view of the orthodontic positioning facebow for the maxillary incisors disclosed in this invention;

[0082] Figure 4 This is a 45-degree side view of the orthodontic positioning facebow for the maxillary incisors disclosed in this invention;

[0083] Figure 5 A schematic diagram showing that the short sides of the two L-shaped supports are provided with strip-shaped holes.

[0084] In the diagram, 1 is the facebone center adjustment frame, 2 is the facebone width adjustment knob, 3 is the facebone body, 4 is the external auditory canal support ball, 5 is the external auditory canal support ball height adjustment knob, 6 is the external auditory canal support ball depth adjustment knob, 7 is the nose pad body, 8 is the nose pad height adjustment knob, 9 is the nose pad depth adjustment knob, 10 is the measuring rod height adjustment bracket, 11 is the measuring rod height adjustment knob, 12 is the eyebrow point positioning measuring ruler, 13 is the eyebrow point positioning measuring ruler depth adjustment knob, 14 is the incisor positioning measuring ruler, 15 is the incisor positioning measuring ruler height adjustment knob, 16 is the incisor positioning measuring ruler position adjustment knob, 17 is the incisor positioning measuring ruler depth adjustment knob, 18 is the stabilizing pad, 19 is the neck strap, 20 is the neck strap buckle, 21 is the head strap, 22 is the head strap adjustment buckle, 101 is a schematic diagram of the short side of the first L-shaped bracket, and 102 is a schematic diagram of the short side of the second L-shaped bracket. Detailed Implementation

[0085] To better understand the content of this invention, two embodiments are provided here.

[0086] Figure 1 This is a schematic diagram of the orthodontic positioning facebow for maxillary incisors disclosed in this invention; Figure 2 This is a side view of the orthodontic positioning facebow for the maxillary incisors disclosed in this invention; Figure 3 This is a frontal view of the orthodontic positioning facebow for the maxillary incisors disclosed in this invention; Figure 4 This is a 45-degree side view of the orthodontic positioning facebow for the maxillary incisors disclosed in this invention.

[0087] Example 1:

[0088] This embodiment discloses an orthodontic positioning facebow for maxillary incisors, including a facebow body 3, an external auditory canal support, a nose bridge, a measuring rod, and a strip;

[0089] The face bow body 3 includes two L-shaped brackets, a face bow center adjustment bracket 1, and a face bow width adjustment knob 2;

[0090] The first ends of the two L-shaped brackets are respectively connected to the face bow center adjustment bracket 1;

[0091] The second ends of the two L-shaped supports are respectively connected to the strip-shaped portion;

[0092] The face bow width adjustment knob 2 is movably connected to the first end of the two L-shaped brackets, so that when the face bow width adjustment knob 2 is rotated, the first ends of the two L-shaped brackets move towards each other or away from each other in the length direction of the face bow center adjustment frame.

[0093] The first end of the external auditory canal support is connected to the second end of the L-shaped bracket, and the second end of the external auditory canal support is placed in the user's external auditory canal.

[0094] The nose bridge is installed on the user-facing side of the facebow center adjustment frame 1;

[0095] The measuring rod includes a measuring rod height adjustment bracket 10, an incisor positioning measuring ruler 14, and an eyebrow point positioning measuring ruler 12; the measuring rod height adjustment bracket 10 is installed on the face bow center adjustment bracket 1; the incisor positioning measuring ruler 14 is movably installed at the lower end of the measuring rod height adjustment bracket 10, and the eyebrow point positioning measuring ruler 12 is movably installed at the upper end of the measuring rod height adjustment bracket 10.

[0096] The incisor positioning measuring ruler 14 is used to measure the position of the user's maxillary incisors.

[0097] The eyebrow positioning measuring ruler 12 is used to measure the depth of the user's soft tissue eyebrow point.

[0098] The external auditory canal support is used to support the orthodontic positioning facebow of the maxillary incisors on the user's external auditory canal. The external auditory canal support ball 4 is installed on the user-proximity side of the movable part of the external auditory canal support ball depth adjustment bracket. The nasal bridge is used to support the orthodontic positioning facebow of the maxillary incisors on the user's soft tissue nasal root point;

[0099] The face bow center adjustment frame 1 includes a hollow first slide groove structure; the short sides of the two L-shaped supports both pass through the first slide groove structure.

[0100] The short sides of the two L-shaped supports are respectively provided with strip-shaped holes; the inner walls of the strip-shaped holes are provided with evenly distributed tooth-like structures; of the two strip-shaped holes, the upper inner wall of one strip-shaped hole is provided with a tooth-like structure, and the lower inner wall of the other strip-shaped hole is provided with a tooth-like structure. Figure 5 This is a schematic diagram of the strip-shaped holes on the short sides of the two L-shaped supports of the present invention. 101 is a schematic diagram of the short side of the first L-shaped support, and 102 is a schematic diagram of the short side of the second L-shaped support.

[0101] The face bow width adjustment knob passes through the first slide groove structure and extends into the interior of the first slide groove structure, and engages with the toothed structures of the two L-shaped brackets respectively.

[0102] Specifically, the face bow width adjustment knob 2 includes a knob body and a long shaft, which are fixedly connected. The knob body is located outside the slide groove structure of the face bow center adjustment frame 1, and the long shaft passes through the slide grooves of the short sides of the two L-shaped brackets. The outer surface of the long shaft is provided with a toothed structure that meshes with the inner surface of the slide groove.

[0103] When the knob body of the face bow width adjustment knob 2 is rotated, the short sides of the two L-shaped brackets move in the opposite direction to the face bow center adjustment bracket 1.

[0104] The face bow width adjustment knob 2 is used to adjust the width of the face bow body so that the width of the face bow body matches the width of the user's face.

[0105] Optionally, the face bow width adjustment knob 2 includes a knob body and a long shaft portion, which are fixedly connected. The knob body is located outside the sliding groove structure of the face bow center adjustment frame 1. The long shaft portion has two hollow cylindrical holes in the part that extends into the sliding groove structure. The axial direction of the two hollow cylindrical holes is consistent with the axial direction of the short side of the two L-shaped brackets. The inner surfaces of the two cylindrical holes are respectively provided with threaded structures with opposite rotation directions.

[0106] The short sides of both L-shaped supports pass through the corresponding cylindrical holes; the short sides of the two L-shaped supports, the portions corresponding to the cylindrical holes, are configured as cylindrical structures.

[0107] On the cylindrical structures of the short sides of the two L-shaped brackets, on the outer surfaces that contact the inner surfaces of the cylindrical holes, there are two threaded structures with opposite rotation directions, that is, the threaded structures on the short sides of the two L-shaped brackets rotate in opposite directions; when the knob body of the face bow width adjustment knob 2 rotates, the short sides of the two L-shaped brackets move in opposite directions relative to the face bow center adjustment frame 1.

[0108] The face bow width adjustment knob 2 is used to adjust the width of the face bow body so that the width of the face bow body matches the width of the user's face.

[0109] The short side of the L-shaped bracket refers to the side of the L-shaped bracket that is closer to the user's nose bridge; the long side of the L-shaped bracket refers to the side of the L-shaped bracket that is closer to the user's cheek.

[0110] The external auditory canal support includes an external auditory canal support ball 4, an external auditory canal support ball height adjustment knob 5, an external auditory canal support ball depth adjustment knob 6, an external auditory canal support ball height adjustment bracket, and an external auditory canal support ball depth adjustment bracket.

[0111] The external auditory canal support ball 4 is mounted on the external auditory canal support ball depth adjustment bracket.

[0112] Specifically, the external auditory canal support ball is installed at the end of the external auditory canal support ball depth adjustment bracket that faces the user.

[0113] The external auditory canal support ball height adjustment bracket includes a fixed part and a movable part; the fixed part of the external auditory canal support ball height adjustment bracket is installed at the second end of the L-shaped bracket; the fixed part of the external auditory canal support ball height adjustment bracket is an internally hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part.

[0114] The external auditory canal support ball height adjustment knob passes through the side wall of the fixed part of the external auditory canal support ball height adjustment bracket and extends into the interior of the slide rail structure, and is movably connected with the moving part, so that when the external auditory canal support ball height adjustment knob 5 is rotated, the moving part of the external auditory canal support ball height adjustment bracket moves along the slide rail structure of the fixed part.

[0115] The external auditory canal support ball depth adjustment bracket includes a fixed part and a movable part; the fixed part of the external auditory canal support ball depth adjustment bracket is installed at the lower end of the movable part of the external auditory canal support ball height adjustment bracket; the fixed part of the external auditory canal support ball depth adjustment bracket is an internally hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part.

[0116] The external auditory canal support ball depth adjustment knob passes through the side wall of the fixed part of the external auditory canal support ball depth adjustment bracket and extends into the interior of the slide rail structure. It is movably connected with the moving part of the external auditory canal support ball depth adjustment bracket, so that when the external auditory canal support ball depth adjustment knob 6 is rotated, the moving part of the external auditory canal support ball depth adjustment bracket moves along the slide rail structure of the fixed part.

[0117] The external auditory canal support ball height adjustment knob 5 is used to adjust the height of the external auditory canal support ball so that the height of the external auditory canal support ball matches the height of the user's external auditory canal.

[0118] The external auditory canal support ball depth adjustment knob 6 is used to adjust the depth of the external auditory canal support ball entering the user's external auditory canal, so that the external auditory canal support ball enters the user's cochlea.

[0119] The external auditory canal support ball depth adjustment knob 6 is movably connected to the moving part of the external auditory canal support ball depth adjustment bracket, and the movable connection can be made using a threaded structure or a toothed structure.

[0120] The movable part of the external auditory canal support ball depth adjustment bracket and the external auditory canal support ball depth adjustment knob 6 are connected by a threaded structure, including:

[0121] The external auditory canal support ball depth adjustment knob 6 includes a knob body and a long shaft.

[0122] The knob body is located outside the groove structure of the fixing part of the external auditory canal support ball depth adjustment bracket; the long shaft part has a cylindrical hole in the part that extends into the groove structure; the axis of the cylindrical hole is consistent with the axis of the moving part; the inner surface of the cylindrical hole is provided with a thread structure.

[0123] The rod-shaped structure of the moving part passes through the cylindrical hole, and the part of the rod-shaped structure that passes through the cylindrical hole is cylindrical; the outer surface of the rod-shaped structure that contacts the inner surface of the cylindrical hole is provided with a corresponding thread structure.

[0124] The movable part of the external auditory canal support bulb depth adjustment bracket and the external auditory canal support bulb depth adjustment knob 6 are connected by a toothed structure, including:

[0125] The movable part of the external auditory canal support bulb depth adjustment bracket is provided with a strip-shaped hole, and the inner surface of the strip-shaped hole is provided with a uniformly distributed tooth-like structure.

[0126] The external auditory canal support ball depth adjustment knob 6 includes a knob body and a long shaft portion, the long shaft portion extending into the strip-shaped hole of the moving part of the external auditory canal support ball depth adjustment bracket; on the outer surface of the long shaft portion that contacts the inner surface of the strip-shaped hole, a transmission gear that meshes with a toothed structure is provided.

[0127] The external auditory canal support ball depth adjustment knob 6 and the movable part of the external auditory canal support ball depth adjustment bracket can also be fixedly connected, including:

[0128] The first end of the movable part is fixedly connected to the external auditory canal support ball depth adjustment knob 6, and the second end of the movable part passes through and extends to the outside of the slide rail structure of the fixed part. By rotating the external auditory canal support ball depth adjustment knob 6, the movable part moves along the slide rail structure of the fixed part.

[0129] The external auditory canal support ball height adjustment knob 5 is movably connected to the moving part of the external auditory canal support ball height adjustment bracket, and the movable connection can be made using a threaded structure or a toothed structure.

[0130] The movable part of the external auditory canal support ball height adjustment bracket and the external auditory canal support ball height adjustment knob 5 are connected by a threaded structure, including:

[0131] The external auditory canal support ball height adjustment knob 5 includes a knob body and a long shaft.

[0132] The knob body is located outside the sliding groove structure of the fixing part of the external auditory canal support ball height adjustment bracket; the long shaft part has a cylindrical hole in the part that extends into the sliding groove structure; the axis of the cylindrical hole is consistent with the axis of the moving part; the inner surface of the cylindrical hole is provided with a thread structure.

[0133] The rod-shaped structure of the moving part passes through the cylindrical hole, and the part of the rod-shaped structure that passes through the cylindrical hole is cylindrical; the outer surface of the rod-shaped structure that contacts the inner surface of the cylindrical hole is provided with a corresponding thread structure.

[0134] The movable part of the external auditory canal support bulb height adjustment bracket and the external auditory canal support bulb height adjustment knob 5 are connected by a toothed structure, including:

[0135] The movable part of the external auditory canal support bulb height adjustment bracket is provided with a strip-shaped hole, and the inner surface of the strip-shaped hole is provided with a uniformly distributed tooth-like structure.

[0136] The external auditory canal support ball height adjustment knob 5 includes a knob body and a long shaft portion, the long shaft portion extending into the strip-shaped hole of the moving part of the external auditory canal support ball height adjustment bracket; on the outer surface of the long shaft portion that contacts the inner surface of the strip-shaped hole, a transmission gear that meshes with a toothed structure is provided.

[0137] The nose pad includes a nose pad body 7, a nose pad height adjustment knob 8, a nose pad depth adjustment knob 9, a nose pad depth adjustment bracket, and a nose pad height adjustment bracket.

[0138] The nose pad support 7 is installed on the side of the nose pad depth adjustment bracket closest to the user.

[0139] The nose pad height adjustment bracket includes a fixed part and a movable part; the fixed part of the nose pad height adjustment bracket is installed at the middle position of the face bow center adjustment frame 1 facing the user; the fixed part of the nose pad height adjustment bracket is an internally hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part.

[0140] The nose pad height adjustment knob passes through the side wall of the nose pad height adjustment bracket fixing part and extends into the interior of the slide rail structure, and is movably connected with the moving part, so that when the nose pad height adjustment knob 8 is rotated, the moving part of the nose pad height adjustment bracket moves along the slide rail structure of the fixing part.

[0141] The nose pad depth adjustment bracket includes a fixed part and a movable part; the fixed part of the nose pad depth adjustment bracket is installed at the lower end of the movable part of the nose pad height adjustment bracket; the fixed part of the nose pad depth adjustment bracket is an internally hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part.

[0142] The nose pad depth adjustment knob 9 passes through the side wall of the nose pad depth adjustment bracket fixing part and extends into the interior of the slide rail structure, and is movably connected with the moving part of the nose pad depth adjustment bracket, so that when the nose pad depth adjustment knob 9 is rotated, the moving part of the nose pad depth adjustment bracket moves along the slide rail structure of the fixing part.

[0143] The nose pad 7 has a structure that matches the bridge of the nose, with its protrusion pointing towards the user's nose bridge; the nose pad is spherical; the nose pad is made of flexible material, including sponge material. The nose pad height adjustment knob 8 and the nose pad height adjustment bracket are used to adjust the height of the nose pad, and the nose pad depth adjustment knob 9 and the nose pad depth adjustment bracket are used to adjust the nose pad in the user's sagittal direction.

[0144] The nose pad depth adjustment knob 9 is movably connected to the moving part of the nose pad depth adjustment bracket, and the movable connection can be made using a threaded structure or a toothed structure.

[0145] The moving part of the nose pad depth adjustment bracket and the nose pad depth adjustment knob 9 are connected by a threaded structure, including:

[0146] The nose pad depth adjustment knob 9 includes a knob body and a long shaft.

[0147] The knob body is located outside the sliding groove structure of the fixing part of the nose pad depth adjustment bracket; the long shaft part has a cylindrical hole in the part that extends into the sliding groove structure; the axis of the cylindrical hole is consistent with the axis of the moving part; the inner surface of the cylindrical hole is provided with a threaded structure.

[0148] The rod-shaped structure of the moving part passes through the cylindrical hole, and the part of the rod-shaped structure that passes through the cylindrical hole is cylindrical; the outer surface of the rod-shaped structure that contacts the inner surface of the cylindrical hole is provided with a corresponding thread structure.

[0149] The moving part of the nose pad depth adjustment bracket and the nose pad depth adjustment knob 9 are connected by a toothed structure, including:

[0150] The moving part of the nose pad depth adjustment bracket is provided with a strip-shaped hole, and the inner surface of the strip-shaped hole is provided with a uniformly distributed tooth-like structure.

[0151] The nose pad depth adjustment knob 9 includes a knob body and a long shaft. The long shaft extends into the strip hole of the moving part of the nose pad depth adjustment bracket. A transmission gear that meshes with a toothed structure is provided on the outer surface of the long shaft that contacts the inner surface of the strip hole.

[0152] The nose pad height adjustment knob 8 is movably connected to the moving part of the nose pad height adjustment bracket, and the movable connection can be made using a threaded structure or a toothed structure.

[0153] The moving part of the nose pad height adjustment bracket and the nose pad height adjustment knob 8 are connected by a threaded structure, including:

[0154] The nose bridge height adjustment knob 8 includes a knob body and a long shaft.

[0155] The knob body is located outside the sliding groove structure of the fixing part of the nose pad height adjustment bracket; the long shaft part has a cylindrical hole in the part that extends into the sliding groove structure; the axis of the cylindrical hole is consistent with the axis of the moving part; the inner surface of the cylindrical hole is provided with a threaded structure.

[0156] The rod-shaped structure of the moving part passes through the cylindrical hole, and the part of the rod-shaped structure that passes through the cylindrical hole is cylindrical; the outer surface of the rod-shaped structure that contacts the inner surface of the cylindrical hole is provided with a corresponding thread structure.

[0157] The movable part of the nose pad height adjustment bracket and the nose pad height adjustment knob 8 are connected by a toothed structure, including:

[0158] The moving part of the nose bridge height adjustment bracket is provided with a strip of holes, and the inner surface of the strip of holes is provided with a uniformly distributed tooth-like structure.

[0159] The nose pad height adjustment knob 8 includes a knob body and a long shaft, which extends into the strip hole of the moving part of the nose pad height adjustment bracket; a transmission gear that meshes with a toothed structure is provided on the outer surface of the long shaft that contacts the inner surface of the strip hole.

[0160] The measuring rod also includes a measuring rod height adjustment knob 11;

[0161] The face bow center adjustment frame 1 also includes a hollow second slide groove structure; the measuring rod height adjustment bracket 10 extends into and passes through the second slide groove structure.

[0162] The measuring rod height adjustment knob passes through the side wall of the second slide groove structure and extends into the interior of the second slide groove structure, and is movably connected to the measuring rod height adjustment bracket 10, so that when the measuring rod height adjustment knob 11 is rotated, the measuring rod height adjustment bracket 10 moves along the second slide groove structure.

[0163] The measuring rod also includes a depth adjustment knob 13 for the eyebrow point positioning measuring ruler and a depth adjustment bracket for the eyebrow point positioning measuring ruler.

[0164] The eyebrow point positioning measuring ruler depth adjustment bracket is fixedly installed on the upper end of the measuring rod height adjustment bracket 10;

[0165] The depth adjustment bracket of the eyebrow point positioning measuring ruler is a hollow slide rail structure, and the eyebrow point positioning measuring ruler is a rod-shaped structure that extends into and passes through the slide rail structure.

[0166] The depth adjustment knob of the eyebrow point positioning measuring ruler passes through the side wall of the eyebrow point positioning measuring ruler depth adjustment bracket and extends into the interior of the slide rail structure, and is movably connected with the eyebrow point positioning measuring ruler, so that when the eyebrow point positioning measuring ruler depth adjustment knob 13 is rotated, the eyebrow point positioning measuring ruler moves along the slide rail structure of the eyebrow point positioning measuring ruler depth adjustment bracket.

[0167] Specifically, the eyebrow point positioning measuring ruler 12 moves along the user's sagittal direction. Both the eyebrow point positioning measuring ruler 12 and the incisor positioning measuring ruler 14 have measuring scales marked on their surfaces. Both the eyebrow point positioning measuring ruler 12 and the incisor positioning measuring ruler 14 point towards the user.

[0168] The measuring rod also includes a height adjustment knob 15 for the incisor positioning measuring ruler, a height adjustment bracket for the incisor positioning measuring ruler, a position adjustment knob 16 for the incisor positioning measuring ruler, and a position adjustment bracket for the incisor positioning measuring ruler.

[0169] Incisor positioning measuring ruler height adjustment knob 15, incisor positioning measuring ruler height adjustment bracket

[0170] The incisor positioning measuring ruler height adjustment bracket includes a hollow first slide rail structure, and the lower end of the measuring rod height adjustment bracket 10 extends into and passes through the first slide rail structure;

[0171] The height adjustment knob of the incisor positioning measuring ruler passes through the side wall of the height adjustment bracket of the incisor positioning measuring ruler and extends into the interior of the first slide rail structure, and is movably connected to the height adjustment bracket of the measuring rod 10, so that when the height adjustment knob of the incisor positioning measuring ruler is rotated, the height adjustment bracket of the incisor positioning measuring ruler moves along the height adjustment bracket of the measuring rod 10.

[0172] The incisor positioning measuring ruler height adjustment bracket includes a hollow second slide rail structure. The incisor positioning measuring ruler position adjustment bracket extends into and through the second slide rail structure. The incisor positioning measuring ruler position adjustment knob passes through the side wall of the incisor positioning measuring ruler height adjustment bracket and extends into the interior of the second slide rail structure, and is movably connected to the incisor positioning measuring ruler position adjustment bracket, so that when the incisor positioning measuring ruler position adjustment knob is rotated, the incisor positioning measuring ruler position adjustment bracket moves along the second slide rail structure.

[0173] The incisor positioning measuring ruler height adjustment knob is movably connected to the measuring rod height adjustment bracket 10; the incisor positioning measuring ruler position adjustment knob 16 is movably connected to the incisor positioning measuring ruler position adjustment bracket; the measuring rod height adjustment knob 11 is movably connected to the measuring rod height adjustment bracket; the eyebrow point positioning measuring ruler depth adjustment knob 13 is movably connected to the eyebrow point positioning measuring ruler; and the incisor positioning measuring ruler depth adjustment knob 17 is movably connected to the incisor positioning measuring ruler. All of these connections can be made using a threaded or toothed structure, similar to the connection between the nose pad adjustment knob and the adjustment bracket.

[0174] The measuring rod also includes an incisor positioning measuring ruler depth adjustment knob 17; the incisor positioning measuring ruler depth adjustment knob 17 includes a left incisor positioning measuring ruler depth adjustment knob and a right incisor positioning measuring ruler depth adjustment knob; the incisor positioning measuring ruler 14 includes a left incisor positioning measuring ruler and a right incisor positioning measuring ruler;

[0175] The incisor positioning measuring ruler position adjustment bracket is provided with a left slide groove and a right slide groove at both ends; the left incisor positioning measuring ruler and the right incisor positioning measuring ruler extend into and pass through the left slide groove and the right slide groove respectively, and point towards the user side;

[0176] The depth adjustment knobs of the left and right incisor positioning measuring rulers partially pass through the side wall of the incisor positioning measuring ruler position adjustment bracket and extend into the left and right slide grooves respectively. They are movably connected to the left and right incisor positioning measuring rulers, so that when the depth adjustment knob of the left or right incisor positioning measuring ruler is rotated, the corresponding left or right incisor positioning measuring ruler moves along the left or right slide groove respectively.

[0177] The measuring rod height adjustment knob 11 is used to adjust the height of the measuring rod so that the interbrow point positioning measuring ruler 12 is at the same height as the user's soft tissue interbrow point, assisting the interbrow point positioning measuring ruler 12 in completing the measurement. The interbrow point positioning measuring ruler depth adjustment knob 13 is used to move the interbrow point positioning measuring ruler 12 in the user's sagittal direction so that the interbrow point positioning measuring ruler 12 contacts the soft tissue interbrow point, assisting 12 in completing the measurement. The height of the interbrow point positioning measuring ruler is adjusted using the measuring rod height adjustment knob, and the depth of the interbrow point positioning measuring ruler is adjusted using the interbrow point positioning measuring ruler depth adjustment knob, so that the interbrow point positioning measuring ruler contacts the user's interbrow point, completing the measurement of the user's soft tissue interbrow point depth. The left incisor positioning measuring ruler is used to measure the position of the left maxillary central incisor; the right incisor positioning measuring ruler is used to measure the position of the right maxillary central incisor.

[0178] The incisor positioning measuring ruler position adjustment knob is used to adjust the lateral position of the incisor positioning measuring ruler so that the left incisor positioning measuring ruler contacts the left maxillary central incisor, or the right incisor positioning measuring ruler contacts the right maxillary central incisor.

[0179] In cases of crowding and misalignment of the maxillary incisors, the position of the maxillary incisors cannot be clearly determined due to the two-dimensional overlap of cephalometric radiographs and lateral smiling images. The orthodontic positioning facebow of the present invention includes incisor positioning measuring rulers on both sides, which can be adjusted in three dimensions for precise positioning and measurement of the clinical crown center point, incisal edge point, and gingival edge point of any maxillary central incisor (left maxillary central incisor and right maxillary central incisor).

[0180] The incisor positioning measuring ruler height adjustment knob is used to adjust the height of the incisor positioning measuring ruler so that the height of the left incisor positioning measuring ruler matches the height of the left maxillary central incisor, or the height of the right incisor positioning measuring ruler matches the height of the right maxillary central incisor.

[0181] The incisor positioning measuring ruler depth adjustment knob is used to adjust the incisor positioning measuring ruler in the user's sagittal direction so that the incisor positioning measuring ruler contacts the maxillary central incisor.

[0182] The orthodontic positioning facebow for the maxillary incisors further includes a stabilizing pad 18; the stabilizing pad 18 includes a rigid disc and a cushioning soft body; the cushioning soft body is disposed on the side of the rigid disc adjacent to the user; the rigid disc is mounted on the second end of the L-shaped bracket. The cushioning soft body may be made of sponge.

[0183] The strip-shaped structure includes a headband 21 and a neckband 19; a rigid disc has a protrusion on the side away from the user; several neckband buckles 20 are provided at both ends of the neckband 19; the neckband buckles 20 are fastened to the protrusion. Both ends of the headband 21 are connected to the rigid disc. The neckband buckles 20 are used to adjust the length of the neckband 19 worn by the user.

[0184] The neck strap 19 is used to make stable contact with the user's neck during the process of the user wearing the orthodontic positioning facebow for the maxillary incisors, so that the orthodontic positioning facebow for the maxillary incisors is stably worn on the user's head.

[0185] The headband 21 is used to make stable contact with the user's head during the process of the user wearing the orthodontic positioning facebow for the maxillary incisors, so that the orthodontic positioning facebow for the maxillary incisors is stably worn on the user's head.

[0186] Headband adjustment buckles 22 are provided at both ends of the headband 21; the headband adjustment buckles 22 are mounted on the rigid disc of the stabilizing pad 18 via a shaft structure. The headband adjustment buckles 22 are used to adjust the length of the headband 21 in contact with the user's head according to the user's head size.

[0187] To address the issue of poor facebow stability, this invention adds a stabilizing pad, an adjustable neck strap, and an adjustable head strap to the orthodontic positioning facebow for the maxillary incisors, thereby increasing the stability of the facebow.

[0188] The orthodontic positioning facebow for the maxillary incisors also includes a microswitch module, a single-point laser height measurement module, and a signal processing and display module. The microswitch module is installed at the contact points between the nasal tray and the external auditory canal support ball and the user's skin. The microswitch module acquires and detects the pressure between the nasal tray / support ball and the user's skin. When the pressure exceeds a threshold, the microswitch module emits an alarm signal. The alarm signal is either a light or sound signal, emitted by the microswitch module via a light-emitting diode or a buzzer. The microswitch module can send an overpressure signal to the signal processing and display module. The microswitch module can be implemented using a surface-mount microswitch or a thin-film microswitch. When the microswitch module needs to communicate with the signal processing and display module, it also includes a Bluetooth module.

[0189] The single-point laser height measurement module is installed at the second end of the long side and the second end of the short side of the two L-shaped brackets. The number of single-point laser height measurement modules is at least three. The measuring direction of the single-point laser height measurement module is perpendicular to the plane where the L-shaped brackets are located. All single-point laser height measurement modules are installed at the same height of the orthodontic positioning surface bow.

[0190] The single-point laser height measurement module is used to measure the height at its installation point, obtain the height value, and send the height value to the signal processing and display module; the single-point laser height measurement module includes a single-point laser ranging submodule and a wireless communication submodule; the single-point laser ranging submodule is used to measure the distance from it to the ground, obtain the height value, and send the height value to the wireless communication submodule;

[0191] The wireless communication submodule is used to wirelessly transmit the received altitude value to the signal processing and display module;

[0192] The signal processing and display module is used to process the received height value to obtain the positioning surface bow plane vector; using the difference between the positioning surface bow plane vector and the true horizontal plane vector, a position correction value is obtained; using the position correction value, the measured position of the maxillary incisors is corrected to obtain the final position of the maxillary incisors.

[0193] The signal processing and display module's processing steps include:

[0194] Three values ​​h1, h2, and h3 are selected from the received height values ​​and used to construct the positioning surface bow plane vector (h1, h2, h3); the actual horizontal plane vector is denoted as (1, 1, 1), and the cosine of the angle between the actual horizontal plane vector and the positioning surface bow plane vector, cosα, is used as the position correction value; the formula for calculating the cosine of the angle is:

[0195]

[0196] The final position of the maxillary incisors is obtained by dividing the measured position by the position correction value.

[0197] This invention discloses a method for measuring the position of the maxillary incisors in orthodontic treatment, which is achieved using an orthodontic positioning facebow for the maxillary incisors, including:

[0198] S1 positions the user in a natural head position;

[0199] Have the user sit upright and place a mirror at a certain distance in front of the user; make the user look at themselves in the mirror with both eyes level, ensuring that the user's eye openings are on the same horizontal plane, thus putting the user in a natural head position;

[0200] Specifically, a mirror is fixed on the wall, 2 meters away from the user. The user is instructed to sit up straight and relax, with their back not touching the chair, their feet naturally apart, and their head repeatedly tilted up and down several times to relax their neck muscles. The user is instructed to look straight into their own eyes in the mirror, ensuring that both eye openings are at the same level and that the user is in a natural head position.

[0201] S2, determine the reference plane for the orthodontic positioning facebow for the user to wear the maxillary incisors;

[0202] Step S2 specifically includes:

[0203] S21, place the stabilizing pad behind and above the user's earlobe; adjust the external auditory canal support ball height adjustment knob and the external auditory canal support ball depth adjustment knob so that the external auditory canal support ball is located next to the user's external auditory canal.

[0204] S22, adjust the face bow width adjustment knob to allow the external auditory canal support ball to enter the cochlea on both sides of the user's ears, while simultaneously ensuring the stabilizing pad is in close contact with the scalp above and behind the user's auricle; specifically, gently insert the external auditory canal support ball into the cochlea on both sides of the user's ears without excessively compressing the cochlea, and gently ensure the stabilizing pad is in close contact with the scalp above and behind the user's auricle.

[0205] S23, by adjusting the nose pad height adjustment knob and the nose pad depth adjustment knob, the nose pad body is positioned above the user's nose bridge, while the face arch is parallel to the ground; specifically, the nose pad body is gently pressed against the user's nose bridge.

[0206] S24, Adjust the length of the neck strap and head strap to stably fix the orthodontic positioning facebow of the maxillary incisor to the user's head, and the facebow body forms a stable reference plane parallel to the ground under the natural head position.

[0207] S25, with the plane containing the face bow as the reference plane.

[0208] S3. On the reference plane, the position of the maxillary incisors is measured using the incisor positioning measuring ruler and the glabella positioning measuring ruler.

[0209] S31, adjust the measuring rod height adjustment knob and the eyebrow point positioning measuring ruler depth adjustment knob to align the eyebrow point positioning measuring ruler with and contact the user's eyebrow point;

[0210] S32 uses a glabella positioning measuring ruler to measure the depth information of the user's soft tissue glabella on a reference plane;

[0211] Specifically, after the user's face is stabilized, adjust the height of the measuring rod and the depth of the eyebrow point positioning measuring ruler so that the eyebrow point positioning measuring ruler is aligned with the user's eyebrow point, tighten it to fix it, and take the reading.

[0212] S33, expose the user's maxillary incisors; adjust the height adjustment knob and position adjustment knob of the incisor positioning measuring ruler so that the incisor positioning measuring ruler is aligned with the user's maxillary incisors;

[0213] S34, Adjust the incisor positioning measuring ruler depth adjustment knob to make the incisor positioning measuring ruler contact the position to be measured in the user's maxillary incisor;

[0214] The measurement locations of the user's maxillary incisors include the clinical crown center point, incisal edge point, or gingival margin point of the user's maxillary incisors.

[0215] S35, using an incisor positioning measuring ruler, measures the depth information of the user's maxillary incisor at the position to be measured on a reference plane;

[0216] S36. Using the depth information of the user's maxillary incisor at the position to be measured and the depth information of the user's soft tissue glabella, the first position of the user's maxillary incisor is obtained.

[0217] The position of the user's maxillary incisors includes the clinical crown center point, incisal edge point, or gingival edge point of the user's maxillary incisors, and their sagittal distance relative to the user's glabella on the reference plane.

[0218] Step S3 specifically includes instructing the user to smile, exposing the maxillary incisors. Adjusting the height and depth of the maxillary incisor positioning measuring rod, aligning it with the target maxillary central incisor (left or right maxillary central incisor) at its position (clinical crown center point, incisal edge point, or gingival margin point), tightening it, and taking the reading. Comparing the position of the maxillary incisors in a natural head position with the distance from the glabella to the measuring rod, the position of the maxillary incisors is determined.

[0219] Example 2:

[0220] This embodiment discloses a method for measuring the position of the maxillary incisors in orthodontic treatment, which is implemented using the orthodontic positioning facebow for the maxillary incisors described in Embodiment 1, including:

[0221] S1, determine the reference plane for the user to wear the orthodontic positioning facebow for the maxillary incisors; obtain the position correction value using the signal processing display module and the single-point laser height measurement module;

[0222] Step S1 includes:

[0223] S11, place the stabilizing pad behind and above the user's auricle; adjust the external auditory canal support ball height adjustment knob and the external auditory canal support ball depth adjustment knob so that the external auditory canal support ball is located next to the user's external auditory canal.

[0224] S12, adjust the face bow width adjustment knob to allow the external auditory canal support ball to enter the cochlea on both sides of the user's ears, and at the same time make the stabilizing pad close to the scalp above and behind the user's auricle; when the micro switch module issues an alarm signal, stop adjusting the face bow width adjustment knob.

[0225] Specifically, the external auditory canal support ball is gently inserted into the cochlea on both sides of the user's ear, without excessively compressing the cochlea, and the stabilizing pad is gently pressed against the scalp above and behind the user's auricle.

[0226] S13, by adjusting the nose pad height adjustment knob and the nose pad depth adjustment knob, the nose pad body is positioned above the user's nose bridge, while the face arch is parallel to the ground; when the micro switch module issues an alarm signal, the adjustment of the nose pad depth adjustment knob is stopped.

[0227] Specifically, gently press the nose pad against the user's nose bridge.

[0228] S14, Adjust the length of the neck strap and head strap to stably fix the orthodontic positioning facebow of the maxillary incisor to the user's head, and the facebow body forms a stable reference plane parallel to the ground under the natural head position.

[0229] S15, with the plane containing the face bow as the reference plane.

[0230] S16. The height at the installation point is measured using a single-point laser height measurement module to obtain the height value; the signal processing and display module processes all the measured height values ​​to obtain the position correction value.

[0231] S2, on the reference plane, the position of the maxillary incisors is measured using an incisor positioning measuring ruler and an interorbital point positioning measuring ruler; the measured position of the maxillary incisors is corrected using a signal processing and display module to obtain the final position of the user's maxillary incisors.

[0232] S21, adjust the measuring rod height adjustment knob and the eyebrow point positioning measuring ruler depth adjustment knob to align the eyebrow point positioning measuring ruler with and contact the user's eyebrow point;

[0233] S22, using the eyebrow point positioning measuring ruler, measures the depth information of the user's soft tissue eyebrow point on the reference plane;

[0234] Specifically, after the user's face is stabilized, adjust the height of the measuring rod and the depth of the eyebrow point positioning measuring ruler so that the eyebrow point positioning measuring ruler is aligned with the user's eyebrow point, tighten it to fix it, and take the reading.

[0235] S23, expose the user's maxillary incisors; adjust the height adjustment knob and position adjustment knob of the incisor positioning measuring ruler so that the incisor positioning measuring ruler is aligned with the user's maxillary incisors;

[0236] S24, Adjust the incisor positioning measuring ruler depth adjustment knob to make the incisor positioning measuring ruler contact the position to be measured in the user's maxillary incisor;

[0237] The measurement locations of the user's maxillary incisors include the clinical crown center point, incisal edge point, or gingival margin point of the user's maxillary incisors.

[0238] S25, using the incisor positioning measuring ruler, measures the depth information of the user's maxillary incisor at the position to be measured on the reference plane;

[0239] S26. Using the depth information of the user's maxillary incisor at the position to be measured and the depth information of the user's soft tissue glabella, the first position of the user's maxillary incisor is obtained.

[0240] S27, the user's first position of maxillary incisors is input into the signal processing and display module. The signal processing and display module uses the position correction value to correct the first position of the user's maxillary incisors to obtain the final position of the user's maxillary incisors.

[0241] The position of the user's maxillary incisors includes the clinical crown center point, incisal edge point, or gingival edge point of the user's maxillary incisors, and their sagittal distance relative to the user's glabella on the reference plane.

[0242] Step S2 specifically includes instructing the user to smile, exposing the maxillary incisors. Adjusting the height and depth of the maxillary incisor positioning measuring rod, aligning it with the target maxillary central incisor (left or right maxillary central incisor) at its position (clinical crown center point, incisal edge point, or gingival margin point), tightening it, and taking the reading. Comparing the position of the maxillary incisors in a natural head position with the distance from the glabella to the measuring rod, the position of the maxillary incisors is determined.

[0243] For patients undergoing orthodontic treatment involving tooth extraction, after determining the target position of the maxillary incisors before treatment, orthodontists can design different anchorage methods to retract the maxillary incisors. However, due to significant individual differences among patients and varying biomechanical responses to orthodontic forces, the actual retraction of the maxillary anterior teeth during treatment often varies considerably from patient to patient. Using the same method to adjust the orthodontic correction will inevitably produce different treatment results for different patients. If, during treatment, the orthodontic correction can be adjusted accordingly based on measurements of the patient's maxillary incisor position, the orthodontic treatment outcome for different patients can be effectively improved.

[0244] Statistically, the measurement sequence of the maxillary incisor positions follows a stationary random process; the only difference between users is the parameter of this stationary random process. A stationary random process can be generated using a white noise-driven linear time-invariant system, which can be described by a linear difference equation. Here, a linear difference equation is used to predict the future position information of the user's maxillary incisors. First, the parameters of the prediction model are calculated using historical measurement data of each user's maxillary incisor positions; then, the prediction model is established using these parameters.

[0245] This invention discloses a method for predicting the position of the maxillary incisors in orthodontic treatment. It utilizes the orthodontic positioning facebow for the maxillary incisors described in Example 1 and data obtained using the aforementioned measurement method, including:

[0246] S101, at regular intervals, measure the position information of the user's maxillary incisors; use all the user's maxillary incisor position information to construct a position information sequence;

[0247] S102, Initialize the location prediction model;

[0248] S103, using the location information sequence, solve for the parameters of the location prediction model to obtain the optimal parameters of the location prediction model;

[0249] S104. Using the optimal parameters of the location prediction model, update the location prediction model to obtain the updated location prediction model.

[0250] S105. Using the updated position prediction model, the position information sequence is processed to obtain the position of the maxillary incisors at future times.

[0251] The measurement of the user's maxillary incisor position can be achieved using the same method used for measuring the maxillary incisor position in orthodontic treatment.

[0252] The location prediction model is expressed as follows:

[0253] H(n) = B(n) / A(n),

[0254] Where B(n) = 1 + b1n -1 +…+b q n -q B(n) is the numerator polynomial, and A(n) = 1 + a1n -1 +…+a p n -p A(n) is the denominator polynomial, where n is the input data of the location prediction model, [b1, b2, ..., bn]. q [a1, a2, ..., a] represents the parameters of the numerator polynomial, q represents the order of the numerator polynomial, and [a1, a2, ..., a] represents the order of the numerator polynomial. p [] represents the parameter of the denominator polynomial, and p represents the order of the denominator polynomial. b1 represents the first-order parameter of the numerator polynomial, b2 represents the second-order parameter of the numerator polynomial, and so on. q Let a1 be the q-th order parameter of the numerator polynomial, a2 be the 2-th order parameter of the denominator polynomial, and so on. p is the p-th order parameter of the denominator polynomial.

[0255] S103 includes:

[0256] S1031, calculate the cross-correlation function of the position sequence, perform Fourier transform on the cross-correlation function, and obtain the power spectrum of the position sequence;

[0257] S1032, using the power spectrum of the location sequence, construct the modified Yule-Walker equation for the location prediction model;

[0258] S1033, using the singular value decomposition method, solve the modified Yule-Walker equation to obtain an estimate of the order of the denominator polynomial;

[0259] S1034, Discretize the cross-correlation function to obtain the cross-correlation matrix; use the cross-correlation matrix as the augmented matrix; use the augmented matrix to establish the estimation error equation of the denominator polynomial parameters; with the goal of minimizing the estimation error of the denominator polynomial parameters, use the overall least squares method to solve the estimation error equation of the denominator polynomial parameters to obtain the estimated values ​​of the denominator polynomial parameters.

[0260] S1035, Using the singular value decomposition method, the cross-correlation matrix is ​​processed to obtain an estimate of the order of the numerator polynomial;

[0261] S1036. Using the cross-correlation matrix and the power spectrum of the position sequence, construct a nonlinear equation system for the molecular polynomial parameters; solve the nonlinear equation system to obtain the estimated values ​​of the molecular polynomial parameters.

[0262] S1037, the estimated values ​​of the denominator polynomial order, denominator polynomial parameters, numerator polynomial order, and numerator polynomial parameters are used as the optimal parameters of the location prediction model;

[0263] In step S1036, an intermediate equation for constructing the Kaveh spectral estimation subprocess can be used to construct a nonlinear equation system for the molecular polynomial parameters; the Newton-Raphson algorithm can be used to solve the nonlinear equation system.

[0264] Step S105 includes:

[0265] White noise is input into the updated position prediction model to obtain the output power spectrum; an inverse Fourier transform is performed on the output power spectrum to obtain the prediction information sequence; using the position information sequence, the predicted position information for future time moments is extracted from the prediction information sequence, and the predicted position information for future time moments is used as the position of the maxillary incisors for future time moments.

[0266] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An orthodontic positioning facebow for maxillary incisors, characterized in that, Includes the face bow body, external auditory canal support, nose bridge, measuring rod, and band; The face bow body includes two L-shaped brackets, a face bow center adjustment bracket, and a face bow width adjustment knob; The first ends of the two L-shaped brackets are respectively connected to the face bow center adjustment frame; The second ends of the two L-shaped supports are respectively connected to the strip-shaped portion; The face bow width adjustment knob is movably connected to the first end of the two L-shaped brackets, so that when the face bow width adjustment knob is rotated, the first ends of the two L-shaped brackets move towards or away from each other in the length direction of the face bow center adjustment frame. The first end of the external auditory canal support is connected to the second end of the L-shaped bracket, and the second end of the external auditory canal support is placed in the user's external auditory canal. The nose bridge is installed on the user-facing side of the face bow center adjustment frame; The measuring rod includes a measuring rod height adjustment bracket, an incisor positioning measuring ruler, and an eyebrow point positioning measuring ruler; the measuring rod height adjustment bracket is installed on the face bow center adjustment bracket; the incisor positioning measuring ruler is movably installed at the lower end of the measuring rod height adjustment bracket, and the eyebrow point positioning measuring ruler is movably installed at the upper end of the measuring rod height adjustment bracket; The incisor positioning measuring ruler is used to measure the position of the user's maxillary incisors; The eyebrow positioning measuring ruler is used to measure the depth of the user's soft tissue eyebrow point; The orthodontic positioning facebow for the maxillary incisors also includes a stabilizing pad; the stabilizing pad includes a rigid disc and a cushioning soft body; the cushioning soft body is located on the side of the rigid disc adjacent to the user; the rigid disc is mounted on the second end of the L-shaped bracket; the cushioning soft body is made of sponge soft body.

2. The orthodontic positioning facebow for maxillary incisors as described in claim 1, characterized in that, The face bow center adjustment frame includes a hollow first slide groove structure; the short sides of the two L-shaped brackets both pass through the first slide groove structure; The short sides of the two L-shaped supports are respectively provided with strip-shaped holes; the inner walls of the strip-shaped holes are provided with evenly distributed tooth-like structures; of the two strip-shaped holes, the upper inner wall of one strip-shaped hole is provided with a tooth-like structure, and the lower inner wall of the other strip-shaped hole is provided with a tooth-like structure. The face bow width adjustment knob passes through the first slide groove structure and extends into the interior of the first slide groove structure, and engages with the toothed structures of the two L-shaped brackets respectively.

3. The orthodontic positioning facebow for the maxillary incisors as described in claim 1, characterized in that, The external auditory canal support includes an external auditory canal support ball, an external auditory canal support ball height adjustment knob, an external auditory canal support ball depth adjustment knob, an external auditory canal support ball height adjustment bracket, and an external auditory canal support ball depth adjustment bracket; The external auditory canal support ball is mounted on the external auditory canal support ball depth adjustment bracket; The external auditory canal support ball height adjustment bracket includes a fixed part and a movable part; the fixed part is installed at the second end of the L-shaped bracket; the fixed part is a hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part. The external auditory canal support ball height adjustment knob passes through the side wall of the external auditory canal support ball height adjustment bracket fixing part and extends into the interior of the slide rail structure, and is movably connected with the external auditory canal support ball height adjustment bracket moving part, so that when the external auditory canal support ball height adjustment knob is rotated, the external auditory canal support ball height adjustment bracket moving part moves along the slide rail structure of the external auditory canal support ball height adjustment bracket fixing part; The external auditory canal support ball depth adjustment bracket includes a fixed part and a movable part; the fixed part is installed at the lower end of the movable part; the fixed part is a hollow slide rail structure, and the movable part is a rod-shaped structure that extends into and passes through the slide rail structure of the fixed part. The external auditory canal support ball depth adjustment knob passes through the side wall of the external auditory canal support ball depth adjustment bracket fixing part and extends into the interior of the slide rail structure, and is movably connected with the external auditory canal support ball depth adjustment bracket moving part, so that when the external auditory canal support ball depth adjustment knob is rotated, the external auditory canal support ball depth adjustment bracket moving part moves along the slide rail structure of the external auditory canal support ball depth adjustment bracket fixing part.

4. The orthodontic positioning facebow for the maxillary incisors as described in claim 1, characterized in that, The measuring rod also includes a measuring rod height adjustment knob, an eyebrow point positioning measuring ruler depth adjustment knob and an eyebrow point positioning measuring ruler depth adjustment bracket, an incisor positioning measuring ruler height adjustment knob, an incisor positioning measuring ruler height adjustment bracket, an incisor positioning measuring ruler position adjustment knob and an incisor positioning measuring ruler position adjustment bracket. The face bow center adjustment frame also includes a hollow second slide groove structure; the measuring rod height adjustment bracket extends into and passes through the second slide groove structure; The measuring rod height adjustment knob passes through the side wall of the second slide groove structure and extends into the interior of the second slide groove structure, and is movably connected to the measuring rod height adjustment bracket, so that when the measuring rod height adjustment knob is rotated, the measuring rod height adjustment bracket moves along the second slide groove structure; The eyebrow point positioning measuring ruler depth adjustment bracket is fixedly installed on the upper end of the measuring rod height adjustment bracket; The depth adjustment bracket of the eyebrow point positioning measuring ruler is a hollow slide rail structure, and the eyebrow point positioning measuring ruler is a rod-shaped structure that extends into and passes through the slide rail structure. The depth adjustment knob of the eyebrow point positioning measuring ruler passes through the side wall of the eyebrow point positioning measuring ruler depth adjustment bracket and extends into the interior of the slide rail structure, and is movably connected with the eyebrow point positioning measuring ruler, so that when the eyebrow point positioning measuring ruler depth adjustment knob is rotated, the eyebrow point positioning measuring ruler moves along the slide rail structure of the eyebrow point positioning measuring ruler depth adjustment bracket. The incisor positioning measuring ruler height adjustment bracket includes a hollow first slide rail structure, and the lower end of the measuring rod height adjustment bracket extends into and passes through the first slide rail structure. The height adjustment knob of the incisor positioning measuring ruler passes through the side wall of the height adjustment bracket of the incisor positioning measuring ruler and extends into the interior of the first slide rail structure, and is movably connected with the height adjustment bracket of the measuring rod, so that when the height adjustment knob of the incisor positioning measuring ruler is rotated, the height adjustment bracket of the incisor positioning measuring ruler moves along the height adjustment bracket of the measuring rod. The incisor positioning measuring ruler height adjustment bracket includes a hollow second slide rail structure. The incisor positioning measuring ruler position adjustment bracket extends into and through the second slide rail structure. The incisor positioning measuring ruler position adjustment knob passes through the side wall of the incisor positioning measuring ruler height adjustment bracket and extends into the interior of the second slide rail structure, and is movably connected to the incisor positioning measuring ruler position adjustment bracket, so that when the incisor positioning measuring ruler position adjustment knob is rotated, the incisor positioning measuring ruler position adjustment bracket moves along the second slide rail structure.

5. The orthodontic positioning facebow for the maxillary incisors as described in claim 1, characterized in that, The orthodontic positioning facebow for the maxillary incisors also includes a micro-switch module, a single-point laser height measurement module, and a signal processing and display module. The micro-switch module is installed at the contact points between the nasal tray and the external auditory canal support ball and the user. The micro-switch module is used to acquire and detect the pressure between the nasal tray and the external auditory canal support ball and the user's skin. When the pressure exceeds a threshold, the micro-switch module issues an alarm signal. The single-point laser height measurement module is installed at the second end of the long side and the second end of the short side of the two L-shaped brackets. The number of single-point laser height measurement modules is at least three. The measuring direction of the single-point laser height measurement module is perpendicular to the plane where the L-shaped brackets are located. All single-point laser height measurement modules are installed at the same height of the orthodontic positioning surface bow. The single-point laser height measurement module is used to measure the height at its installation point, obtain the height value, and send the height value to the signal processing and display module; the single-point laser height measurement module includes a single-point laser ranging submodule and a wireless communication submodule; the single-point laser ranging submodule is used to measure the distance from it to the ground, obtain the height value, and send the height value to the wireless communication submodule; The wireless communication submodule is used to wirelessly transmit the received altitude value to the signal processing and display module; The signal processing and display module is used to process the received height value to obtain the positioning surface bow plane vector; using the difference between the positioning surface bow plane vector and the true horizontal plane vector, a position correction value is obtained; using the position correction value, the measured position of the maxillary incisors is corrected to obtain the final position of the maxillary incisors.

6. A method for measuring maxillary incisors, characterized in that, This is achieved using the orthodontic positioning facebow for the maxillary incisors as described in claim 5, comprising: S1, using the orthodontic positioning facebow of the maxillary incisor, determine the reference plane and position correction value; S2. Using the incisor positioning measuring ruler and the glabella positioning measuring ruler, the position of the maxillary incisors is measured. The measured position of the maxillary incisors is corrected using the signal processing and display module to obtain the final position of the user's maxillary incisors.

7. The method for measuring maxillary incisors as described in claim 6, characterized in that, Step S1 includes: S11, Place the stabilizing pad above and behind the user's earlobe; S12, adjust the height adjustment knob and depth adjustment knob of the external auditory canal support ball so that the external auditory canal support ball is located next to the user's external auditory canal; S13, adjust the face bow width adjustment knob to allow the external auditory canal support ball to enter the cochlea on both sides of the user's ears, and at the same time make the stabilizing pad close to the scalp above and behind the user's auricle. When the micro-switch module issues an alarm signal, stop adjusting the face bow width adjustment knob. S14, by adjusting the nose pad height adjustment knob and the nose pad depth adjustment knob, the nose pad body is positioned above the user's nose bridge, and the face arch is parallel to the ground. When the micro switch module issues an alarm signal, the adjustment of the nose pad depth adjustment knob is stopped. S15, adjust the length of the neck strap and head strap so that the orthodontic positioning facebow of the maxillary incisor is fixed to the user's head; S16, with the plane containing the face bow as the reference plane; S17 uses a single-point laser height measurement module to measure the height at its installation point and obtain the height value; S18, the signal processing and display module processes all the measured height values ​​to obtain the position correction value.

8. The method for measuring maxillary incisors as described in claim 6, characterized in that, Step S2 includes: S21, adjust the measuring rod height adjustment knob and the eyebrow point positioning measuring ruler depth adjustment knob to align the eyebrow point positioning measuring ruler with and contact the user's eyebrow point; S22, using the eyebrow point positioning measuring ruler, measures the depth information of the user's soft tissue eyebrow point on the reference plane; S23, expose the user's maxillary incisors; adjust the height adjustment knob and position adjustment knob of the incisor positioning measuring ruler so that the incisor positioning measuring ruler is aligned with the user's maxillary incisors; S24, Adjust the incisor positioning measuring ruler depth adjustment knob to make the incisor positioning measuring ruler contact the position to be measured in the user's maxillary incisor; S25, using the incisor positioning measuring ruler, measures the depth information of the user's maxillary incisor at the position to be measured on the reference plane; S26. Using the depth information of the user's maxillary incisor at the position to be measured and the depth information of the user's soft tissue glabella, the first position of the user's maxillary incisor is obtained. S27, the user's first position of maxillary incisors is input into the signal processing and display module. The signal processing and display module uses the position correction value to correct the first position of the user's maxillary incisors to obtain the final position of the user's maxillary incisors.

9. A method for predicting the position of the maxillary incisors in orthodontic treatment, characterized in that, The method for measuring the position of the maxillary incisors during orthodontic treatment according to any one of claims 7 to 8 is used to obtain the user's maxillary incisor position information, including: S101, At regular intervals, measure the position information of the user's maxillary incisors; use all the user's maxillary incisor position information to construct a position information sequence; S102, Initialize the location prediction model; S103, using the location information sequence, solve for the parameters of the location prediction model to obtain the optimal parameters of the location prediction model; S104. Using the optimal parameters of the location prediction model, update the location prediction model to obtain the updated location prediction model. S105. Using the updated position prediction model, the position information sequence is processed to obtain the position of the maxillary incisors at future times.

10. The method for predicting the position of the maxillary incisors in orthodontic treatment as described in claim 9, characterized in that, S103 includes: S1031, calculate the cross-correlation function of the position sequence, perform Fourier transform on the cross-correlation function, and obtain the power spectrum of the position sequence; S1032, using the power spectrum of the location sequence, construct the modified Yule-Walker equation for the location prediction model; S1033, using the singular value decomposition method, solve the modified Yule-Walker equation to obtain an estimate of the order of the denominator polynomial; S1034, Discretize the cross-correlation function to obtain the cross-correlation matrix; use the cross-correlation matrix as the augmented matrix; use the augmented matrix to establish the estimation error equation of the denominator polynomial parameters; with the goal of minimizing the estimation error of the denominator polynomial parameters, use the overall least squares method to solve the estimation error equation of the denominator polynomial parameters to obtain the estimated values ​​of the denominator polynomial parameters. S1035, Using the singular value decomposition method, the cross-correlation matrix is ​​processed to obtain an estimate of the order of the numerator polynomial; S1036. Using the cross-correlation matrix and the power spectrum of the position sequence, construct a nonlinear equation system for the molecular polynomial parameters; solve the nonlinear equation system to obtain the estimated values ​​of the molecular polynomial parameters. S1037 uses the estimated values ​​of the denominator polynomial order, denominator polynomial parameters, numerator polynomial order, and numerator polynomial parameters as the optimal parameters for the location prediction model.

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