CN115919486A - Method for simplifying visual orthodontic treatment target - Google Patents

Abstract

The invention discloses a method for simplifying a visual orthodontic treatment target, which sequentially comprises the following steps: acquiring a lateral skull film, importing the lateral skull film into image processing software, preprocessing the lateral film to adjust the image position and calibrate scales, drawing an occlusion plane and a selected reference line and carrying out corresponding measurement, determining the vertical and sagittal positions of incisors, determining the transverse target position of the incisors, simply arranging the teeth, and determining whether the transverse adjustment is needed or not, a tooth extraction scheme and an anchorage design according to the tooth arrangement result. The method is based on the thought and the steps for realizing the simplified orthodontic visual treatment target (VTO) by the patient side film and the photo, the consideration of the soft tissue side appearance and the tooth movement limit is taken into the VTO design system for the first time, the steps are simple, the arrangement is clear, the operation time is short, and the method is particularly suitable for scenes such as orthodontic teaching, doctor scheme designation, doctor-patient communication and the like.

Description

Method for simplifying visual orthodontic treatment target

Technical Field

The invention belongs to the technical field of orthodontic treatment, and particularly relates to a method for simplifying a visual positive treatment target.

Background

Malocclusion is one of the three major oral diseases identified by the World Health Organization (WHO). Wherein, the convex malocclusion taking 'mouth convex' as the chief complaint is the most common type of dentognathic and maxillofacial deformity in clinic, and the incidence rate accounts for more than 49 percent of orthodontic patients. The personalized orthodontic treatment regimen and the ultimate treatment effect depend on the initial three-dimensional position and movement limits of the patient's teeth in the jaw, as well as the relationship of the amount of tooth movement to soft tissue changes. A set of visual treatment target making system and tooth arrangement scheme can provide important assistance for an orthodontist to make a correction target and determine a correction means.

The traditional Visual Treatment Objective (VTO) prediction VTO refers to predicting and simulating orthodontic treatment results by methods such as cephalometric measurement and model analysis according to initial dentognathic and maxillofacial conditions of a patient. Since 1957, different scholars proposed different VTO methods, of which the Ricketts VTO method is currently more common. The method comprises the steps of firstly positioning the lower incisor, positioning the incisor margin position of the lower incisor 1mm in front of an AP line, and then determining the positions of the upper incisor and the rear incisor according to the position of the lower incisor. And simultaneously, the growth and development are brought into consideration.

The traditional diagnostic tooth arrangement method needs to take a mold and cast a plaster model, and comprises the following steps: 1. preliminarily determining whether the arch of the dental arch needs to be extracted, the number of teeth to be extracted and the tooth positions according to model measurement, diagnosis design and prediction of a visual therapeutic target (VTO) of an X-ray positioning side film; 2. separating the dentition to be rearranged; 3. 2 self-made fine ligature wires with the diameter of 0.2mm are twisted into twisted wires to replace a fretsaw, and each gypsum tooth saw which needs to be rearranged is broken off after the gypsum tooth saw is arranged below an adjacent point, so that the adjacent of the gypsum teeth is not damaged as much as possible; 4. and (4) trimming the shapes of the sawn gypsum teeth and the roots, and rearranging the gypsum teeth on the model according to an ideal arch. According to VTO prediction and model measurement, the position of the upper incisor and the interval between the upper cuspids are firstly determined, and then other teeth are arranged. The plaster teeth are required to be closely contacted with each other, and the inclination, height, arch form and relationship between the upper and lower jaw arches of the plaster teeth are required to be arranged in order.

Along with the rapid development of computer technology, the digital VTO and digital VTO technology is bred, and the changes of dentition and occlusion, tooth and jaw bone, lip position and craniofacial relationship in the maltreatment are simulated. At present, a full-mouth correction system comprising an invisible correction technology and a digital lip-tongue side correction technology can realize VTO of final correction results of dentition and occlusion through digital tooth arrangement and simulated tooth crown movement.

The traditional VTO needs a large amount of paper-pen tracing and manual measurement and calculation in drawing, the procedure is complex, the technical sensitivity is high, the operation time is long, only part of orthodontics specialists are applied to complex cases, orthodontics students and doctors are difficult to master, the popularization is not strong, the traditional VTO is mostly predicted in a lateral cranial plate, namely the sagittal direction, and most of the traditional VTO is represented by the central incisors and the first molar, the diagnostic tooth arrangement in other directions is not brought into a VTO system, the moving target positions of the teeth except the central incisors and the first molar are not reflected, specific tooth extraction schemes and anchorage design references cannot be provided, meanwhile, the traditional VTO result is poor in vividness and is not easy to understand by patients.

The traditional diagnostic tooth arrangement experiment needs to manufacture a corresponding model, cut dentition and the like, has complicated steps, cannot accurately arrange teeth according to a VTO target position, needs a corresponding oral cavity scanning instrument or model scanning instrument on the basis of a digital impression because a digital VTO and a digital tooth arrangement are mostly established, has higher economic cost barrier, and does not have the conditional routine digital VTO and tooth arrangement in the treatment design of the existing non-invisible and personalized labial and lingual patients.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a method for simplifying a visual orthodontic treatment target, simplify operation steps and operation time and reduce the economic cost of doctors and patients.

The invention is realized by the following technical scheme:

a method of simplifying visualization of orthodontic treatment goals, comprising the steps of:

1) Shooting a lateral skull film, or intercepting the lateral skull film by CBCT, and introducing the lateral skull film into image processing software, such as PowerPoint, keynote, geometric drawing board and other software;

2) Side piece pretreatment: adjusting the lateral slices by rotating, zooming and the like according to the selected reference plane and the reference line requirement, for example, adjusting the picture by taking the orbital-ear plane, the anterior skull base plane and the true horizontal plane as horizontal reference lines; the method comprises the following steps of calibrating scales according to scales carried by side films acquired after CT three-dimensional reconstruction software such as a scale/Dolphin and the like is processed when the side films are shot: the ruler on the original side position piece can be directly used as a measuring ruler by copying and cutting, or the side position piece is zoomed according to a certain proportion, the distance measured in the subsequent step is converted according to the corresponding proportion of the length of the line segment and the scale of the ruler, if the software functional condition allows, the actual distance of the ruler can be defined, and then the subsequent measurement is directly carried out;

3) Adjusting and covering the upper incisor picture and the lower incisor picture according to the size of the same-name teeth on the lateral slice, or selecting software capable of identifying the upper incisor form and the lower incisor form to automatically perform matting processing so as to realize tooth movement;

4) Drawing an occlusion plane, determining a reference line required by the treatment target positions of the upper incisor and the lower incisor and carrying out corresponding required measurement. Depending on the orthodontic concept, the reference Line and the corresponding reference plane of the present step can be determined by the user, for example, the aesthetic plane proposed by Ricketts — E Line, GVL Line (Glabella Vertical Line) proposed by Andrews, TVL Line (subnasale Vertical Line) proposed by arnet, S Line proposed by Steiner, T Line proposed by Schwarz, H Line proposed by Holdaway, zero meridian, etc. The related occlusion plane can determine and select a functional jaw plane or an anatomical jaw plane according to the selected system;

for example, an aesthetic plane E line is selected, and after the lateral plate is processed with the orbital-ear plane horizontal reference line in 2), the functional jaw plane is drawn in the step; then drawing an E line and respectively measuring the distance from the upper lip and the lower lip to the E line, and recording the distance as dUE and dLE;

5) Determining the vertical position of incisors;

6) Determining the sagittal position of the incisors;

7) Determining the transverse (near-far-middle direction) target position of the incisors according to the upper and lower middle lines;

8) Determining an incisor treatment target position;

9) And (4) simply arranging teeth, and determining a tooth extraction scheme and an anchorage design according to a tooth arrangement result.

Further, the vertical position of the incisors in the step 5) comprises the vertical position of an upper incisor and the vertical position of a lower incisor, the vertical position of the upper incisor is that the upper incisor cutting end is positioned 2-4mm below the lower edge of the upper lip, the vertical position of the lower incisor is based on the normal jaw covering, and the upper incisor cutting end is positioned at 1/3 of the lower incisor crown.

Further, if the upper incisor is actually moved vertically more than 4mm, the target position is adjusted to 4mm to depress or elongate the anterior limit.

Further, the specific steps of determining the sagittal position of the incisor in the step 6) are as follows:

a) According to the distance from the lower lip to the line E, determining the sagittal position of the upper incisor by calculating the proportional relation between the adduction of the lip and the adduction of the upper incisor, and setting an ideal upper incisor sagittal position;

b) Simulating upper incisors, adjusting the positions of the upper incisors according to the occlusion plane in parallel, adjusting torque, standing tooth roots between alveolar bones, avoiding the tooth roots from breaking through the rear boundary of a palatine side bone plate so as to be in line with the health of the root bones, paying attention to incisal guidance inclination, judging whether the moving target position of the upper incisors exceeds the moving limit of the teeth or not, and properly compromising the sagittal target position if the simulated upper incisors cannot meet the conditions;

c) Simulating lower incisors: adjusting the position of the lower incisor to form normal coverage, standing the tooth root at the center of the lower alveolar bone, judging whether the tooth movement limit is exceeded, and if the condition cannot be met, again compromising the target positions of the upper incisor and the lower incisor.

Further, the step 7) of determining the lateral target position of the incisors is to determine the upper and lower median lines according to clinical examination and clinical data, and further determine the lateral movement of the upper and lower incisors.

Further, the clinical examination is a frontal smile image, model or CBCT of the patient in combination with clinical data.

Further, the step 8) of determining the incisor treatment target position comprises the following steps: determining the final target position of the upper incisor and recording the sagittal, vertical and transverse movement amounts; and determining the final target position of the lower incisor and recording the sagittal, vertical and transverse movement amounts.

Further, the step 9) of simply arranging teeth specifically comprises the following steps:

a) Opening the picture of the upper occlusal surface and the lower occlusal surface of the patient, adjusting the mirror image of the picture to meet the intraoral condition if necessary, and transferring a ruler;

b) Scale transfer: the scale transfer is carried out by adopting the method one or the method two,

the first method specifically comprises the following steps: measuring the length of upper and lower first molar teeth on the side position piece by using a scale, transferring the scale into a mouth image photo, or directly transferring first molar teeth data provided by the model, and respectively adjusting the scale corresponding to the length of the first molar teeth so as to enable the upper and lower occlusion images to share the scale;

the second method specifically comprises the following steps: respectively transferring the upper occlusion image and the lower occlusion image to a lateral plate, adjusting the direction of the picture, and corresponding the lateral plate and the incisors, the first molars, the second molars and other like teeth on the occlusion image one by one to adjust the size of the occlusion image so that the occlusion image shares a lateral plate scale;

c) The tooth picture material is overlapped on the processed upper and lower occlusion pictures, the upper and lower jaw teeth are based on the overlapping of the width of the marginal ridge, the transparency of the tooth material can be adjusted if necessary to ensure that the step is more efficient, or the software which can identify the tooth form is selected to automatically perform the matting processing on each tooth to realize the tooth movement is used for processing the step;

d) Simulating tooth arrangement by upper and lower incisors: moving the incisors to the simulated target position according to the upper and lower incisor disordering direction and the transverse target position;

e) Establishing a target position personalized arch: drawing up and down occlusal lines similar to the initial arch, and selecting corresponding standardized arch materials according to the initial arch shape, such as a pointed circle, an oval circle and a square circle, for further adjustment; determining the personalized arch of the lower jaw target position according to the position of the lower jaw teeth and the shape of the alveolar bone, and determining the personalized arch of the upper jaw target position according to the occlusal line by the upper jaw to enable the upper jaw to be matched with the lower jaw;

f) Simulating tooth arrangement by other teeth: taking alveolar bone as a reference for other teeth, taking arch shapes of upper and lower jaw teeth as a basis of a target position, namely, a connecting line of cheek tips of lower jaw is positioned on an elliptic line as much as possible, a connecting line of a central fossa of upper jaw is positioned on the elliptic line, and tooth arrangement is moved according to a marginal ridge connecting line.

g) The lateral and sagittal movement distances of the upper and lower first molars were recorded.

Compared with the prior art, the invention has the following beneficial effects:

1) The method of the invention uses lateral soft tissue as a guide to set the upper and lower anterior tooth malformation orientation target positions, meets the requirement of the current patient on the face type during treatment, simultaneously considers the root health and the tooth movement limit, and meets the healthy orthodontic guide;

2) The method firstly combines the lateral slice disorientation VTO and the occlusion image simulated tooth arrangement to simulate the VTO in the three-dimensional direction. Meanwhile, after the tooth arrangement is simulated, the visual guidance effect on the judgment of tooth extraction scheme selection and anchorage control is achieved;

3) The method has the advantages of simple steps, clear arrangement and short operation time, and is particularly suitable for scenes such as orthodontic teaching, doctor scheme formulation, doctor-patient communication and the like;

4) The method relates to software such as a skull side film, an oral external oral internal photo, powerPoint and the like with tools as the most common bases, and compared with digital VTO and digital tooth arrangement, the method has extremely low economic cost for doctors and patients and strong popularization.

Drawings

FIG. 1 is a lateral cranium view adjusted with the orbital-ear plane as the horizontal reference line;

FIG. 2 is a side view of the upper and lower incisor pictures after the material is adjusted and covered according to the size of the side piece;

FIG. 3 is a functional jaw plane and line E drawn on the side slice;

FIG. 4 is a vertical positioning view of incisors;

FIG. 5 is a sagittal ideal position determination view of an upper incisor;

6-7 are diagrams of the upper incisor actual target position determination process;

FIG. 8 is a view showing the actual target site determination of the simulated upper and lower incisors;

FIG. 9 is a first method of adjusting the shared scale for the top and bottom occlusion images;

FIGS. 10-12 illustrate a second method for adjusting the shared scale of the upper and lower snap images;

FIGS. 13-14 are schematic views of overlapping dental image material with the upper and lower occlusal images;

FIG. 15 is a view of simulating upper and lower incisor target site tooth arrangement on the upper and lower occlusal images;

fig. 16 is a personalized arch for mapping the bite line to simulate the target position of the upper and lower jaws;

figure 17 is a final occlusion portrait ranking.

Detailed Description

The invention is further described below in conjunction with the drawings of the specification in order to better understand the technical solution.

The invention uses the object as orthodontist or medical student or orthodontics beginner, the analysis object is orthodontics occultation therapy patient, and the upper lip shortening patient or the patient with abnormal width is the analysis object to be eliminated.

The invention discloses a method for simplifying visual orthodontic treatment targets, which is realized by the following steps:

the method comprises the following steps: taking a lateral skull film, or obtaining the lateral skull film after the CBCT is processed by three-dimensional software, guiding the lateral skull film into image processing software, taking Keynote software as an example, taking a orbital-ear plane as a horizontal reference line to adjust an image, and calibrating the adjusted lateral skull film according to a scale which is carried by the lateral skull film and is obtained after the CT software such as a graduated scale/Dolphin and the like is subjected to three-dimensional reconstruction during shooting, wherein the scale is shown in figure 1.

Step two: the upper and lower incisor picture materials are adjusted and covered according to the size of the lateral slice, as shown in fig. 2.

Step three: drawing a functional jaw plane on the lateral skull slice in the second step, then drawing an E line, measuring the distance from the upper lip and the lower lip to the E line, marking as dUE and dLE, copying and cutting the scale on the lateral skull slice as a measuring scale, and converting the length of the line segment and the scale of the scale, as shown in FIG. 3.

Step four: the vertical position of the incisors is determined such that the incisor cut end is located 2-4mm below the lower edge of the upper lip, and if the actual movement vertical direction exceeds 4mm, the anterior limit is depressed/extended to adjust the target position to 4mm, the vertical position of the lower incisors is based on the normal overbite, and the incisor cut end is located at 1/3 of the undercut crown as shown in fig. 4.

Step five: determining the sagittal position of the incisor, determining the sagittal position of the upper incisor by calculating the proportional relation between the labial adduction and the upper incisor adduction according to the distance from the lower lip to the E line, and setting an ideal upper incisor sagittal position, wherein the reference standard is different according to the difference of the race, the lip thickness and the like, and the relation of the incisor adduction and the lower lip adduction is 1. Normally the lower lip is located slightly posterior to line E, and as shown in figure 5 the patient's lower lip is 11mm from line E, so approximately 12mm of upper anterior adduction is required to reduce coverage.

Step six: simulating upper incisors, adjusting the positions of the upper incisors according to the occlusal plane in parallel, adjusting torque, and erecting tooth roots between alveolar bones, as shown in fig. 6, avoiding the tooth roots from breaking through the back boundary of a palatal side bone plate so as to meet the health of the root bones, paying attention to the incisal guidance slope, and judging whether the moving target position of the upper incisors exceeds the tooth moving boundary, if the simulated upper incisors can not meet the conditions, properly compromising the sagittal target position, as shown in fig. 7. Simulating the lower incisors, adjusting the positions of the lower incisors to form normal coverage, standing the root at the center of the lower alveolar bone, judging whether the tooth movement limit is exceeded, and if the conditions cannot be met, re-compromising the target positions of the upper and lower incisors, wherein the upper anterior teeth are adducted by 9mm and the lower anterior teeth are adducted by 5mm as shown in fig. 8.

Step seven: determining the lateral target position of incisors, and determining the lateral movement of upper and lower incisors according to clinical examination and clinical data.

Step eight: determining the target position of incisor treatment, respectively determining the final target positions of upper incisor and lower incisor, and recording the sagittal, vertical and transverse movement.

Step nine: simply arrange teeth, open patient's upper and lower occlusal surface photo, adjust the picture mirror image and make it accord with the intraoral condition, carry out the scale and shift, adopt method one or method two to carry out the scale and shift: the first method specifically comprises the following steps: measuring the lengths of the upper and lower first molars by using a ruler on the side position sheet, transferring the ruler into a mouth image photo, or directly transferring first molars data provided by a model, and respectively adjusting the ruler corresponding to the lengths of the first molars to enable the upper and lower occlusal images to share the ruler, as shown in fig. 9;

the second method specifically comprises the following steps: respectively transferring the upper occlusion image and the lower occlusion image to a lateral plate, adjusting the direction of the picture, and corresponding the incisors, the first molars and the second molars on the lateral plate and the occlusion image to one-to-one correspondence to adjust the size of the occlusion image so that the occlusion images share a lateral plate ruler, as shown in fig. 10-12;

overlapping the dental picture material on the original picture, the upper and lower teeth being subject to the overlapping of the width of the marginal ridge, as shown in fig. 13, the transparency of the original material is adjusted to 60% in this example to facilitate the overlapping and the subsequent steps, as shown in fig. 14; simulating tooth arrangement by upper and lower incisors: moving the incisors to the simulated target position in the lateral direction and the direction of the upper and lower incisor deformities, as shown in fig. 15; and (3) establishing a target position personalized arch: drawing up and down occlusal lines similar to the initial arch, determining the personalized arch of the lower jaw target position according to the positions of the lower jaw teeth and the shapes of alveolar bones, and determining the personalized arch of the upper jaw target position according to the occlusal lines by the upper jaw to enable the upper jaw target position to be matched with the lower jaw, as shown in fig. 16; simulating tooth arrangement by other teeth: taking the alveolar bone as a reference for the rest teeth, and taking the arch shape of the upper and lower teeth as a basis, namely, the buccal cusp connecting line of the lower jaw is positioned on the elliptic line as far as possible, the central fossa of the upper jaw is positioned on the elliptic line, and the teeth are arranged according to the homeopathic movement of the marginal crest connecting line, as shown in fig. 17, and the transverse and sagittal movement distances of the first molar of the upper and lower jaws are recorded.

Step ten: determining a tooth extraction scheme according to a simulated tooth arrangement result and a correction principle, determining whether transverse disorder and treatment schemes (such as maxillary arch expansion, tooth compensation treatment and the like) exist according to the horizontal moving distance of the initial molar and the target molar, and determining corresponding anchorage requirements and control schemes according to the sagittal moving distance of the initial molar and the target molar.

According to the invention, the upper and lower anterior tooth target positions are established according to different orthodontic concepts and reference lines, and the side slices in the step 1) can be adjusted, and the reference line (E in the example of the scheme) in the step 1) can be replaced by other reference lines and corresponding reference planes, such as a GVL line proposed by Andrews, a TVL natural head plumb line proposed by Arnett, an S line proposed by Steiner, a T line proposed by Schwarz, an H line proposed by Holdaway, a zero meridian and the like. The occlusal plane involved can be determined and selected from a functional jaw plane or an anatomical jaw plane according to the selected system.

The corresponding proportion relation between the change of the lateral soft tissue and the anterior tooth can be updated according to the data such as the race, the sample size, the research quality and the like.

The software related by the invention can be replaced by other picture processing tools with corresponding functions, such as a geometric drawing board, automatic matting software and the like.

The simulation tooth arrangement related by the invention can be directly carried out on corresponding digital tooth arrangement software if conditions exist, and the thinking is basically consistent.

Claims (10)

1. A method for simplifying visualization of orthodontic treatment goals, the method comprising the steps of:

1) Shooting a lateral skull film, or intercepting the lateral skull film by CBCT (cone beam computed tomography), and introducing the lateral skull film into image processing software;

2) Side piece pretreatment: adjusting the side film by rotating, zooming and the like according to the selected reference plane and the reference line; calibrating the scales according to the scales carried by the side film obtained after the side film is processed by the scale-carrying/three-dimensional reconstruction software;

3) Adjusting and covering the upper incisor picture and the lower incisor picture according to the size of the same-name teeth on the lateral sheet, or selecting software capable of identifying the upper incisor form and the lower incisor form to automatically perform sectional drawing processing so as to realize tooth movement;

4) Drawing an occlusion plane, determining a reference line required by the upper incisor treatment target position and the lower incisor treatment target position, and performing corresponding required measurement;

5) Determining the vertical position of incisors;

6) Determining the sagittal position of the incisors;

7) Determining the horizontal direction of the incisors, namely the target position in the mesial-distal direction according to the upper and lower middle lines;

8) Determining an incisor treatment target position;

9) And (4) simply arranging teeth, and determining a tooth extraction scheme and an anchorage design according to a tooth arrangement result.

2. The method for simplifying the visualization of the orthodontic treatment target according to claim 1, wherein the calibration of the scale in the step 2) is performed by copying and cutting the scale on the lateral site directly as a measuring scale or scaling the lateral site at a certain ratio, and the distance measured in the subsequent step is converted by the corresponding ratio of the length of the line segment to the scale.

3. The method of claim 1, wherein the reference lines and corresponding reference planes in step 4) are user-defined and include but are not limited to aesthetic planes E lines proposed by Ricketts, GVL lines proposed by Andrews, TVL lines proposed by Arnett, S lines proposed by Steiner, T lines proposed by Schwarz, H lines proposed by Holdaway, zero meridian lines, and wherein the occlusal planes may be selected to be functional or anatomical jaw planes according to the selected system.

4. The method for simplifying visualization of orthodontic treatment objects of claim 1 wherein the vertical incisor positions in step 5) include an upper incisor position and a lower incisor position, the upper incisor position being with the upper incisor tip positioned 2-4mm below the inferior border of the upper lip, the lower incisor position being with respect to the normal overbite, and the upper incisor tip positioned 1/3 of the lower crown.

5. A method for simplifying the visualization of the orthodontic treatment target of claim 3 wherein if the upper incisor is actually moved vertically more than 4mm, the target position is adjusted to 4mm to depress or elongate the anterior limit.

6. A method for simplifying visualization of orthodontic treatment objectives according to claim 1, wherein the step of determining the sagittal location of the incisors in step 6) comprises the specific steps of:

a) Setting an ideal upper incisor vector position according to the selected reference line and the standard;

b) Simulating upper incisors, adjusting the positions of the upper incisors according to the occlusion plane in parallel, adjusting torque, standing tooth roots between alveolar bones, avoiding the tooth roots from breaking through the rear boundary of a palatine side bone plate so as to be in line with the health of the root bones, paying attention to incisal guidance inclination, judging whether the moving target position of the upper incisors exceeds the moving limit of the teeth or not, and properly compromising the sagittal target position if the simulated upper incisors cannot meet the conditions;

c) Simulating lower incisors: and adjusting the position of the lower incisor to form normal coverage, standing the tooth root in the center of the lower alveolar bone, judging whether the tooth movement limit is exceeded, and if the condition cannot be met, re-compromising the target positions of the upper incisor and the lower incisor.

7. The method for simplifying visualization of orthodontic treatment target according to claim 1, wherein the determination of the lateral target site of the incisors in step 7) is further characterized by determining the lateral movement of the upper and lower central incisors by determining the upper and lower central lines according to clinical examination and clinical data.

8. A method for simplifying the visualization of orthodontic treatment goals of claim 7, wherein the clinical examination in combination with the clinical data is a frontal smile image, a model or CBCT of the patient.

9. The method for simplifying visualization of orthodontic treatment target according to claim 1, wherein the determining of the incisor treatment target site in the step 8) comprises: determining the final target position of the upper incisor and recording the sagittal, vertical and transverse movement amounts; and determining the final target position of the lower incisor, and recording the sagittal, vertical and transverse movement amounts.

10. The method for simplifying visualization of orthodontic treatment objects of claim 1, wherein the step 9) of simply arranging teeth comprises the specific steps of:

a) Opening the picture of the upper occlusal surface and the lower occlusal surface of the patient, adjusting the mirror image of the picture to meet the intraoral condition if necessary, and transferring a ruler;

b) Scale transfer: the scale transfer is carried out by adopting the method one or the method two,

the first method specifically comprises the following steps: measuring the lengths of upper and lower first molars by using a ruler on the side position sheet, transferring the ruler into a mouth image photo, or directly providing first molars data by the model for transferring, and respectively adjusting the ruler corresponding to the lengths of the first molars to enable the upper and lower occlusal images to share the ruler;

the second method specifically comprises the following steps: respectively transferring the upper occlusion image and the lower occlusion image to a lateral plate, adjusting the direction of the picture, and corresponding the incisors, the first molars and the second molars on the lateral plate and the occlusion image to one-to-one correspondence to adjust the size of the occlusion image so that the occlusion images share a lateral plate scale;

c) Overlapping the tooth picture material on the upper and lower occlusion pictures processed in the previous step, wherein the upper and lower jaw teeth are subject to edge ridge width overlapping, or automatically performing matting processing on each tooth by selecting recognizable tooth forms to realize the software processing of tooth movement;

d) Simulating tooth arrangement by upper and lower incisors: moving the incisors to the simulated target position according to the upper and lower incisor disordering direction and the transverse target position;

e) And (3) establishing a target position personalized arch: drawing up and down occlusal lines similar to the initial arch, determining the personalized arch of the lower jaw target position according to the positions of lower jaw teeth and the shape of alveolar bones, and determining the personalized arch of the upper jaw target position according to the occlusal lines by the upper jaw to enable the upper jaw target position to be matched with the lower jaw;

f) Simulating tooth arrangement by other teeth: taking alveolar bone as a reference for other teeth, taking arch shapes of upper and lower jaw teeth as a basis of a target position, namely, a connecting line of cheek tips of lower jaw is positioned on an elliptic line as much as possible, a connecting line of a central fossa of upper jaw is positioned on the elliptic line, and arranging teeth according to a marginal ridge connecting line;

g) The lateral and sagittal movement distances of the upper and lower first molars were recorded.

Images