KR20190077849A - Method for generating tooth arrangement data used for designing clear aligner, apparatus, and recording medium thereof - Google Patents

Abstract

The present invention relates to a method for generating tooth arrangement data for a transparent brace design, a device therefor, and a recording medium for recording the same. According to the method for generating tooth arrangement data, a function of generating an intermediate tooth model predicted in an orthodontic process between an initial tooth model before an orthodontic treatment and a final tooth model after the orthodontic treatment, and automatically updating other intermediate tooth models by reflecting correction content of the intermediate tooth model, is provided. Therefore, when a set of teeth arrangement data for a transparent brace design is constructed, an operation of a user is minimized, thereby greatly increasing user convenience and effectively reducing time required for a design process. In addition, the deviation between users can be reduced, and the accuracy of data is improved, thereby ultimately greatly improving the satisfaction of a patient with a transparent brace.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of generating tooth alignment data for a transparent calibrator, an apparatus therefor, and a recording medium on which the tooth alignment data is recorded.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique of generating tooth array data, and more particularly, to a method for automatically generating tooth array data by calibration step applied to a transparent calibrator design, an apparatus therefor, and a recording medium storing the same.

Transparent correction is a procedure to calibrate the teeth using a transparent resin frame. It is aesthetically superior to conventional teeth correction, which is made by attaching metal to teeth, and can be removed and removed. And the use thereof is gradually increasing.

In order to produce a transparent straightener, first, a tooth array data set is generated by stepwise dividing a tooth movement path continuously moving from an initial tooth position of a patient to a final tooth position through a dental CAD software (Dental CAD Software) A plurality of transparent calibrators to be overlaid on the tooth array of each step are designed based on the tooth array data set. Based on the above design file, the transparent calibrator is fabricated by vacuum forming and 3D printing. The patient can calibrate the teeth by periodically replacing the transparent calibrator with the corresponding calibration steps.

Thus, since a transparent calibrator is fabricated on the basis of a set of tooth array data in stages, it is important to accurately predict the tooth movement path in the calibration process and construct a data set for a successful tooth calibration.

In the conventional dental CAD software, a function of automatically generating an intermediate level tooth array between the initial tooth alignment data before calibration and the final tooth alignment data after calibration is provided, but it is impossible to modify the intermediate level tooth alignment In actuality, the user manually creates a plurality of intermediate-level tooth array data, and the automatic generation function has a very low practical utilization.

The manual generation of a plurality of intermediate-stage tooth arrays is not only cumbersome and time-consuming because each of the teeth is segmented and the divided teeth are rearranged one by one. In addition, when one intermediate-stage tooth arrangement is modified, it also affects continuous tooth movements with other stages, and therefore, it is accompanied by correction of other intermediate-stage tooth arrays reflecting the correction contents, . In addition, there is a problem that a large variation occurs depending on the user depending on experience or ability.

Accordingly, there is a need for a method that can accurately reflect the movement of the teeth while minimizing the user's work in constructing a step-by-step tooth array data set for the design of a transparent calibrator.

The present invention has been proposed in order to solve the problems of the related art that the tooth arrangement data for the transparent calibrator design is manually generated by the user and is very troublesome and takes a lot of time. The present invention also provides a method of generating tooth array data that can accurately reflect a tooth movement process, an apparatus therefor, and a recording medium on which the same is recorded.

A method of generating tooth array data for a computer design of a transparent calibrator according to an embodiment of the present invention includes: generating an initial model corresponding to a tooth array before calibration; Generating a final model corresponding to a target tooth arrangement after calibration; Generating a plurality of intermediate models corresponding to a tooth arrangement predicted in a time-series manner in a calibration process based on the initial model and the final model; Modifying at least one intermediate model of the plurality of intermediate models corresponding to input through the user interface unit; And updating the intermediate model between the reference model and the modification model based on the reference model set in the models and the modification model being the modified intermediate model.

Here, the reference model may include a first reference model located at a stage prior to the correction model and a second reference model located at a subsequent stage in the calibration process.

Meanwhile, the reference model may be input through the user interface unit or may be set according to a predetermined criterion.

As an example, the reference model may be set to include the initial model or the final model.

Calculating an intermediate model range that requires updating based on the corrected tooth number, tooth movement amount, and rotation angle by comparing the correction model before and after modification; And setting the reference model corresponding to the calculated intermediate model range.

The updating of the intermediate model may update the intermediate model by performing interpolation based on a difference between the tooth arrangement between the reference model and the correction model.

The step of updating the intermediate model may further include the step of comparing a difference in tooth movement amount between the reference model and the correction model with a predetermined reference movement amount to add a new intermediate model between the reference model and the correction model, And increasing or decreasing the number of the intermediate models by excluding the intermediate models.

According to another aspect of the present invention, there is provided an apparatus for generating tooth array data for generating tooth array data for a computer design of a transparent calibrator, comprising: an initial model generation unit for generating an initial model corresponding to a tooth array before calibration; A final model generation unit for generating a final model corresponding to the target tooth arrangement after calibration; An intermediate model generation unit for generating a plurality of intermediate models corresponding to the tooth arrangement predicted in a time-series manner in the calibration process based on the initial model and the final model; An intermediate model modifying unit for modifying at least one intermediate model among the plurality of intermediate models in response to input through a user interface unit; And an intermediate model updating unit for updating the intermediate model between the reference model and the correction model based on the reference model set and the modified intermediate model, among the models.

At this time, the intermediate model generation unit may generate the plurality of intermediate models by interpolating based on the difference between the tooth position and the angle in the initial model and the final model.

On the other hand, when the first intermediate model is corrected by the intermediate model correcting unit and the second intermediate model is located after the first intermediate model on the calibration process, the intermediate model updating unit updates the first intermediate model Wherein the first intermediate model and the modified second intermediate model are located between a first reference model and a modified first intermediate model located at a previous stage and between the modified first intermediate model and the modified second intermediate model, The intermediate model between the second reference model located at a later stage than the correction model.

If the second modification is performed by the intermediate model correcting unit after the first update by the intermediate model updating unit in response to the first modification by the intermediate model correcting unit, In performing the second update, the reference model may be set to include the intermediate model in which the first modification is performed.

As described above, according to the present invention, since the task of the user is minimized in constructing the tooth array data set for the design of the transparent calibrator, the convenience of the user is greatly increased and the time required for the design process can be effectively shortened.

In addition, according to the present invention, it is possible to reduce the deviation between users by reflecting accurate tooth movement in the calibration process, and ultimately improve the satisfaction of the transparent correction patient.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an apparatus for generating tooth arrangement data for a computer design of a transparent corrector according to an embodiment of the present invention; FIG.
FIG. 2 is a flowchart illustrating a method of generating tooth arrangement data for a computer design of a transparent corrector according to an embodiment of the present invention; FIG.
FIG. 3 shows an example of the generated initial model and final model; FIG.
Figure 4 is an example of the generated intermediate model;
5 is a reference diagram for explaining an example of an update process of an intermediate model; And
6 is a reference diagram for explaining another example of the updating process of the intermediate model.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings and the inventor is not limited to the concept of terminology for describing his or her invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

The apparatus for generating tooth array data according to the present invention is a pre-stage for real production of a transparent calibrator mounted in a patient's mouth through Vacuum Forming and 3D printing or the like, And generates a tooth array data set.

1 is a block diagram of an apparatus for generating tooth arrangement data according to an embodiment of the present invention. 1, an apparatus 100 for generating tooth arrangement data according to an embodiment of the present invention includes a user interface unit 10, an initial model generation unit 20, a final model generation unit 30, an intermediate model generation unit 40, an intermediate model correcting unit 50, and an intermediate model updating unit 60.

The user interface unit 10 receives necessary information from a user and displays information. The user interface unit 10 includes input means for inputting information such as a mouse, a keyboard, a button, and a keypad, an input menu and a processing result, Display means for displaying the input / output information, a touch screen for providing input / output through a single device, and the like.

The initial model generation unit 20 generates an initial model corresponding to the initial tooth arrangement of the patient before the transparent corrective treatment. The initial model generation unit 20 can generate a three-dimensional initial model in which the patient's tooth arrangement is displayed based on the oral scan data of the patient or the data of the patient's oral impression body scanned by the model scanner.

The final model generating unit 30 generates a final model corresponding to the target tooth arrangement after the transparent corrective treatment. The target tooth arrangement can generate a three-dimensional final model in which the individual teeth are independently separated through the division process for the initial model, and the positions of the separated individual teeth are changed so that the aligned target tooth array is displayed side by side.

The intermediate model generation unit 40 generates a plurality of intermediate models corresponding to the tooth arrangement predicted in the transparent correction process based on the generated initial model and the final model. As described above, the intermediate model is a model corresponding to a tooth arrangement which gradually changes in the course of the transparent correction from the initial tooth arrangement before calibration to the final tooth arrangement after calibration, and the movable range of the tooth movement during a predetermined period A plurality of time series are generated.

The intermediate model generation unit 40 applies an interpolation algorithm based on the difference in distance, angle difference, and direction according to the position of each tooth between the initial model and the final model, The intermediate models can be generated gradually. The amount of tooth movement at each step at the time of interpolation may be determined by user setting or by a preset reference.

At this time, it is possible to generate an intermediate model reflecting not only the difference between the initial model and the final model but also other factors to be considered in the calibration. For example, the recommended amount of tooth movement may be different depending on the age of the patient, so that even if the total amount of tooth movement during the correction period is the same, the number of intermediate models may vary according to age. Since the order in which they are moved, that is, the path of change, is different, the intermediate model can be generated differently depending on the tooth arrangement. As described above, the intermediate model generation unit 40 generates intermediate model generation rules (hereinafter, referred to as " intermediate model generation rules ") according to various factors that affect the tooth movement amount, movement direction, and movement order at the time of correction such as an expected correction period, patient age, Rule), and generates an intermediate model through interpolation considering the stored rules, the quantitative difference between the initial model and the final model.

The intermediate model correcting unit 50 corrects the intermediate model generated by the intermediate model generating unit 40 in response to the user input through the user interface unit 10. [ At this time, modification of several intermediate models may be performed simultaneously among a plurality of intermediate models. The user can modify the intermediate model by changing the position or angle of the divided teeth in the intermediate model.

Thus, if the intermediate model is modified according to the user input, the linear continuity between the intermediate models generated primarily by the intermediate model generation unit 40 according to the interpolation can be disconnected. For example, a calibrator is manufactured so that the teeth move from 0.15 mm to as much as 0.5 mm at each step in the transparent orthodontic treatment slightly different from user to user. Thus, even when the intermediate model is generated, If the model is modified in the middle, the relationship between the intermediate stages is broken. Therefore, the models before and after the corresponding intermediate model that has been modified corresponding to the modification of the intermediate model also need to be changed consecutively.

Accordingly, the intermediate model updating unit 60 updates the remaining intermediate models except for the initial model, the final model, and the intermediate model modified by the intermediate model correcting unit 50 (hereinafter referred to as a correction model). At this time, the update is basically performed for an intermediate model between the reference model and the correction model set among the models.

The reference model is a reference model for determining the range of the intermediate model that needs to be updated due to modification by the intermediate model correcting unit 50. The reference model includes a first reference model located before the correction model in the calibration process, And may include a second reference model.

On the other hand, an intermediate model between the reference model and the correction model is defined as a reference model that is used as a starting point in the calibration process from the initial model to a final model, or as a final point when the correction model is used as an end point And the intermediate model is located between the start point and the end point in time.

The reference model is automatically set so that the initial model and the final model are included when the intermediate model correction unit 50 corrects the model, and the reference model is updated so that all the intermediate models except for the correction model, However, the user may directly determine the reference model through the user interface 10. Through this, the user will be able to purposely exclude a model which he thinks is substantially unnecessary of the intermediate models.

Alternatively, the intermediate model update unit 60 may calculate an intermediate model range that needs to be substantially updated in accordance with a specific modification such as a corrected tooth number, a tooth movement amount, and a rotation angle, and selectively update only the intermediate model, An appropriate reference model may be set. For example, the intermediate model updating unit 60 applies a verification rule for determining whether a tooth alignment change between successive intermediate steps satisfies a predetermined relationship, and performs update if the continuity of the intermediate steps is satisfied after the modification It may not.

On the other hand, the update of the intermediate model by the intermediate model update unit 60 not only changes the tooth arrangement of the update target intermediate model but also inserts a new intermediate model or deletes a part of the intermediate model to increase or decrease the number of intermediate models .

As described above, the intermediate model update unit 60 updates the difference between the tooth arrangement between the reference model and the modified model modified according to the intermediate model correction unit 50, that is, the difference in distance, angle difference, The tooth arrangement of the intermediate model to be updated can be changed by performing the interpolation considering the order of tooth movement by the correction step. In addition, when the difference in tooth movement amount between the reference model and the correction model is larger than a preset reference movement amount and it is determined that calibration is difficult with the current step number, a new intermediate model can be inserted to increase the number of intermediate models. On the contrary, It is possible to reduce the number of intermediate models by deleting a part of the intermediate model when the correction effect can be sufficiently obtained even with a small number of correction steps.

2 is a flowchart illustrating a method of generating tooth arrangement data for a computer design of a transparent corrector according to an embodiment of the present invention. Hereinafter, with reference to FIG. 2, the organic operation of the above-described tooth arrangement data generating apparatus 100 will be described.

In order to design a computer of the transparent correction device, an initial model in which the tooth arrangement of the patient is displayed before the correction is created through the initial model generation unit 20 (S10). The initial model can be generated using data scanned with an oral scanner or scanned with an impression material obtained using an impression material.

Then, a final model in which the target tooth arrangement after the transparent corrective treatment is displayed is generated through the final model generating unit 30 (S20). The final model can be created by dividing each tooth in the initial model and changing the position, angle, etc. of individual teeth that have been divided.

For this, the final model generation unit 30 applies the segmentation algorithm to separately provide each tooth separately, and the user can generate the final model by moving the divided teeth through the user interface unit 10. [ Alternatively, the final model generation unit 30 may automatically generate a final model based on the stored tooth placement algorithm. For example, the centers of the teeth may be recognized for each individual tooth of the initial model, and the teeth may be rearranged such that the centers form a predetermined arch shape. As such, it is of course possible to reflect the patient's specific requirements regarding the anatomical characteristics of the patient, such as the oral cavity size of the patient, the size and shape of the individual teeth, and the type of correction during automatic rearrangement by the algorithm.

FIG. 3 shows an example of an initial model and a final model generated by the above-described method. Referring to FIG. 3, in the initial model (A), teeth alignment is not correct as before correction. In the final model (C) It shows the sorted status.

As described above, the tooth movement is progressively performed step by step in order to reach the final model from the initial model through the transparent correction. The intermediate model generation unit 40 generates the intermediate model from the initial tooth arrangement before calibration to the final tooth arrangement after calibration Intermediate models corresponding to the tooth arrangement in which the teeth are thermally changed in the course of the process are generated (S30). Intermediate model is based on interpolation algorithm based on distance difference, angle difference, direction difference according to position of each tooth between initial model and final model, tooth movement amount during correction such as correction period, patient age, sex, And the intermediate model generation rules according to various factors influencing the moving direction and the moving order.

4 shows an example of seven intermediate models B1 to B7 generated between the initial model A and the final model C, as an example of the generated intermediate model. For reference, the number of intermediate models may vary depending on user setting, total tooth movement, and the like.

Thus, if an intermediate model is automatically generated, a correction operation by the user can be accompanied. The intermediate model generation unit 40 may display the models generated from the first model to the final model as a series of continuous moving images so that the user can easily recognize the necessity of the correction work. The user can review the generated intermediate model and modify the intermediate model by changing the position or angle of the divided teeth of the intermediate model through the user interface unit 10 (S40). At this time, the modification may be performed for only one intermediate model, but the modification may be performed for several intermediate models. For reference, modification is not possible for the first model, and if the final model is modified, the intermediate model generation process should be re-performed.

As described above, when the intermediate model is modified, the intermediate model updating unit 60 sets a reference model that is a reference of the starting point or the ending point of the intermediate model to be updated among the remaining models except for the correction model (S50). The reference model may be set by user input through the user interface unit 10, or may be automatically set according to a preset reference.

The intermediate model update unit 60 may, for example, simply use the initial model and the final model as reference models. Alternatively, by comparing the correction model before and after the correction model, the specific modification such as the corrected tooth number, the tooth movement amount, and the rotation angle can be grasped, and the intermediate model range that needs to be substantially updated An appropriate reference model may be set so that only the corresponding intermediate model is selectively updated. If the relationship with the successive intermediate steps is maintained after the modification, the update may not be performed.

In this manner, when the reference model is set, the intermediate model updating unit 60 updates the intermediate models between the reference model and the correction model (S60). According to this, the reference model, the first model, the final model, and the modification model are excluded from updating.

5 is a reference diagram for explaining the updating process of the above-described intermediate model.

Referring to FIG. 5, it is assumed that the intermediate model B3 among the first model (A), the intermediate models (B1 to B7) and the final model (C) generated first is modified.

Since the time series continuity between the intermediate models is changed in accordance with the modification of the intermediate model B3, the intermediate model updating unit 60 updates the set of the first reference model set in the previous stage of B3 modified in the calibration process And updates the intermediate model between B3 and the first and second reference models starting from the second reference model.

Here, the first reference model may be automatically set to the first model (A) and the second reference model may be automatically set to the final model (C), but there may be a model that the user intends to exclude from the update. 10), or a model to be excluded from the update may be input and a reference model may be set so that the above model is excluded from the update target. According to this, the candidates of the first reference model may be A, B1, and B2, and the candidates of the second reference model may be B4, B5, B6, B7,

If the first reference model is the initial model A and the final model C is set as the second reference model, the models B1 and B2 and the correction model B3 between the initial model A and the correction model B3, B5, B6, B7, which are models between the final model (C) and the final model (C).

Similar to the case of generating the intermediate model, the update is based on the interpolation algorithm based on the teeth of the tooth arrangement between the reference model and the correction model, that is, the distance difference, the angle difference and the direction difference according to the tooth position, Direction, and order of movement, or by increasing or decreasing the number of intermediate models. For reference, when B2 is set as the first reference model and B4 is set as the second reference model, the tooth alignment is not changed for the existing intermediate model, and a new intermediate model step may be inserted according to the situation.

On the other hand, in the example described above, modification is made to only one intermediate model B3, but modifications can be made to other intermediate models.

6 is a reference diagram for explaining another example of the updating process of the intermediate model. For reference, it is assumed that the reference model is set to the initial model (A) and the final model (C) when the correction is made to B3 and B5 in FIG.

Thus, when the correction is made to B3 and B5, the remaining intermediate models B1, B2, B4 and B6 except for the initial model A, the final model C and the modified correction models B3 and B5, , B7 need to be updated. At this time, the first interpolation is performed to update B1 and B2 based on the difference between the first model (A) and the first correction model (B3), which are the reference models, and the first correction model B3 and the second correction model B5 ) To perform a second interpolation to update B4. Further, the third interpolation is performed based on the difference between the second correction model B5 and the final model C, which is another reference model, to update B6 and B7.

When a modification is made to the first intermediate model and the second intermediate model located at a later stage than the first intermediate model in the calibration process as in the above example, Between the first intermediate model, intermediate models between the modified first intermediate model and the modified second intermediate model and between the modified second intermediate model and a second reference model located after the second intermediate model are updated do. Likewise, when three or more intermediate models are modified, the correction model is excluded from the update, and the intermediate model between the reference model and the correction model and between the correction model and the correction model is updated.

On the other hand, when a second update is further made after the first update to the intermediate model is performed in response to the first modification, a first modification is made to the reference model at the time of performing the second update corresponding to the second modification The intermediate model can be set as the reference model.

For example, when the modification to B5 is performed after the modification to B3 is first performed and the update to the intermediate model is further performed, when the intermediate model is updated again to reflect the modification corresponding to B5, B3 is set as the reference model , Intermediate models B4 and B5 between the reference model B3 and the modification model B5 and the final model C between the reference model B5 and the reference model B5 except for the intermediate models B3 and B3, So that the update can be performed only for the intermediate models B6 and B7. However, according to the user setting, the intermediate models in the pre-modified B3 and B3 steps may be included in the update target.

Thus, when the update operation of the intermediate model is completed, thereafter, a task of designing a transparent calibrator to be superimposed on the teeth array of the stepwise model based on the intermediate model follows.

As described above, according to the apparatus 100 for generating tooth arrangement data and the method of the present invention, unlike the prior art in which a user has to manually create an intermediate model by moving a divided tooth, By automatically performing the update from the generation to the modification, the convenience of the user is significantly increased and the time required for the design process can be shortened effectively. In addition, since the data set is generated reflecting the exact tooth movement pattern calculated by the verified algorithm rather than the user's experience or feeling, the deviation between the users can be reduced and the accuracy of the data can be greatly improved.

The method of generating tooth arrangement data according to the present invention may be embodied as a program that can be executed by a computer and may be embodied as various recording media such as a magnetic storage medium, an optical reading medium, and a digital storage medium.

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or combinations thereof. Implementations may be implemented in a computer program product, such as an information carrier, e.g., a machine readable storage device, such as a computer readable storage medium, for example, for processing by a data processing apparatus, May be embodied as a computer program recorded on a device (computer readable medium). A computer program, such as the computer program (s) described above, may be written in any form of programming language, including compiled or interpreted languages, and may be stored as a stand-alone program or in a module, component, subroutine, As other units suitable for use in the present invention. A computer program may be deployed to be processed on one computer or multiple computers at one site or distributed across multiple sites and interconnected by a communications network.

Processors suitable for processing a computer program include, by way of example, both general purpose and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The elements of a computer may include at least one processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer may include one or more mass storage devices for storing data, such as magnetic, magneto-optical disks, or optical disks, or may receive data from them, transmit data to them, . ≪ / RTI > Information carriers suitable for embodying computer program instructions and data include, for example, semiconductor memory devices, for example, magnetic media such as hard disks, floppy disks and magnetic tape, compact disk read only memory A magneto-optical medium such as a floppy disk, an optical disk such as a DVD (Digital Video Disk), a ROM (Read Only Memory), a RAM , Random Access Memory), a flash memory, an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and the like. The processor and memory may be supplemented or included by special purpose logic circuitry.

In addition, the computer-readable medium can be any available media that can be accessed by a computer, and can include both computer storage media and transmission media.

While the specification contains a number of specific implementation details, it should be understood that they are not to be construed as limitations on the scope of any invention or claim, but rather on the description of features that may be specific to a particular embodiment of a particular invention Should be understood. Certain features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although the features may operate in a particular combination and may be initially described as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, Or a variant of a subcombination.

Likewise, although the operations are depicted in the drawings in a particular order, it should be understood that such operations must be performed in that particular order or sequential order shown to achieve the desired result, or that all illustrated operations should be performed. In certain cases, multitasking and parallel processing may be advantageous. Also, the separation of the various device components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and devices will generally be integrated together into a single software product or packaged into multiple software products It should be understood.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: user interface unit 20: initial model generation unit
30: final model generation unit 40: intermediate model generation unit
50: intermediate model correction unit 60: intermediate model update unit

Claims (12)

A method of generating tooth array data for a computer design of a transparent correction device,
Generating an initial model corresponding to the tooth arrangement before calibration;
Generating a final model corresponding to a target tooth arrangement after calibration;
Generating a plurality of intermediate models corresponding to a tooth arrangement predicted in a time-series manner in a calibration process based on the initial model and the final model;
Modifying at least one intermediate model of the plurality of intermediate models corresponding to input through the user interface unit; And
Updating the intermediate model between the reference model and the correction model based on a reference model set among the models and a correction model being the modified intermediate model.
The method according to claim 1,
Wherein the reference model includes a first reference model located at a stage prior to the correction model and a second reference model positioned at a subsequent stage in the calibration process.
The method according to claim 1,
Wherein the reference model is input through the user interface unit or is set according to a predetermined criterion.
The method according to claim 1,
Wherein the reference model comprises the initial model or the final model.
The method according to claim 1,
Calculating an intermediate model range that needs to be updated based on the corrected tooth number, tooth movement amount, and rotation angle by comparing before and after modification of the correction model; And
And setting the reference model in correspondence with the calculated intermediate model range.
The method according to claim 1,
Wherein updating the intermediate model comprises:
Wherein the interpolation is performed based on the difference between the reference model and the correction model to update the intermediate model.
The method according to claim 1,
Wherein updating the intermediate model comprises:
Comparing a difference between tooth movement amounts between the reference model and the correction model with a predetermined reference movement amount to add a new intermediate model between the reference model and the correction model or to remove the existing intermediate model, And increasing or decreasing the tooth alignment data.
A computer-readable recording medium having recorded thereon a program for executing the method of generating teeth arrangement data according to any one of claims 1 to 7.
An apparatus for generating tooth array data for generating tooth array data for a computer design of a transparent calibrator,
An initial model generation unit for generating an initial model corresponding to the tooth arrangement before calibration;
A final model generation unit for generating a final model corresponding to the target tooth arrangement after calibration;
An intermediate model generation unit for generating a plurality of intermediate models corresponding to the tooth arrangement predicted in a time-series manner in the calibration process based on the initial model and the final model;
An intermediate model modifying unit for modifying at least one intermediate model among the plurality of intermediate models in response to input through a user interface unit; And
And an intermediate model updating unit for updating the intermediate model between the reference model and the correction model based on the reference model set and the modified intermediate model.
10. The method of claim 9,
The intermediate model generation unit generates,
Wherein the plurality of intermediate models are generated by interpolation based on differences between tooth positions and angles in the initial model and the final model.
10. The method of claim 9,
When the first intermediate model is corrected by the intermediate model correcting unit and the second intermediate model is located after the first intermediate model on the calibration process, the intermediate model updating unit updates the first intermediate model Wherein the first intermediate model and the modified second intermediate model are located between the modified first intermediate model and the modified first intermediate model, between the modified first intermediate model and the modified second intermediate model, And updates the intermediate model between second reference models located at a later stage.
10. The method of claim 9,
When the second modification is performed by the intermediate model correcting unit after the first update by the intermediate model updating unit in response to the first modification by the intermediate model correcting unit, 2 < / RTI > update, the reference model includes an intermediate model in which the first modification is performed.

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