Computer-aided design program for transparent orthodontic appliances

Abstract

The present invention is characterized by including the steps of: (S01) generating and saving a plurality of images of teeth, in which sequential movement is set for each orthodontic stage, using a computer; (S02) displaying any one of the plurality of images of teeth; (S03) setting a reference line in the lateral direction of each tooth in the image of teeth displayed in step S02 to determine the overall shape of the transparent orthodontic appliance, and displaying the reference line; (S04) setting an incision line in the image of teeth displayed in step S02, the incision line being spaced a certain distance from the reference line in the gingival direction and corresponding to the end of the orthodontic appliance, and displaying the incision line; and (S05) displaying a first treatment image in which the transparent orthodontic appliance covering the upper and lower teeth is semi-transparently placed over the upper and lower teeth according to the incision line set in step S04.

Description

Technical Field

[0001] The present invention relates to a transparent orthodontic device used for dental correction, and to a method and program for designing a transparent orthodontic device using a computer. Specifically, it relates to a program for designing a transparent orthodontic device optimized for teeth to be corrected by scanning a patient's oral structure using a 3D scanner, generating and storing information on a treatment image, and simultaneously displaying the stored tooth image and the transparent orthodontic device to be designed. The manufacturing process of a transparent orthodontic device directly manufactured by a 3D printer can be divided into a movement setting stage (setup stage) for moving (or / and rotating) the teeth to be corrected to a target point where the teeth are desired to be moved, and a stage for designing a transparent orthodontic device according to each setting stage. The present invention relates to a program for designing a transparent orthodontic device according to each movement setting stage of the teeth to be corrected.

Background Art

[0002] The method for manufacturing a conventional dental orthodontic device is carried out as follows. First, after the operator grasps the oral structure of the patient, a dental model having the same shape as the shape of the teeth is created. The dental model of the patient is generally created using plaster or the like after taking a mold of the patient's oral structure. For the plaster dental model thus created, a sheet-like polyol material is thermocompression-bonded in the vertical direction using a molding machine to manufacture a transparent orthodontic device suitable for the patient, which is a conventional general technique. Such a manufacturing method requires manual work by the cooperation of a doctor and a dental technician and is carried out by a skilled dental technician, so it requires a lot of time and labor, and as a result, there is a problem of increasing the manufacturing cost of the orthodontic device. On the other hand, in recent years, a method has become widely used that utilizes 3D scanners to scan a patient's oral structure, save the information, and create a dental model based on that saved information. This method is more advanced than the conventional method of directly taking impressions of the teeth to create a dental model in order to understand the patient's tooth structure. In other words, dental clinics send 3D scan data of the patient's tooth structure to a dental laboratory, which then creates a dental model based on the received information and fabricates the clear orthodontic appliance by pressing it into place. All of the methods described above involve first creating a dental model and then manufacturing the orthodontic appliance based on it. These methods differ from the present invention, which does not require a dental model because it utilizes a 3D printer to directly output the orthodontic appliance. This invention relates to a program for designing transparent orthodontic devices that are directly manufactured using a 3D printer. [Overview of the project] [Problems that the invention aims to solve]

[0003] The computer-based transparent orthodontic appliance design program according to the present invention aims to significantly reduce the time and effort required for manufacturing orthodontic appliances and dramatically lower the cost of orthodontic appliances by enabling the direct output of orthodontic appliances using a 3D printer without the need to create separate tooth models. Furthermore, the computer-based transparent orthodontic appliance design program according to the present invention aims to simplify the manufacturing process of orthodontic appliances by enabling direct manufacturing at dental clinics without the need for the complex process of collaboration between dental clinics and dental laboratories. In addition, the computer-based transparent orthodontic appliance design program according to the present invention aims to improve the fit and usefulness of transparent orthodontic appliances using 3D printers by providing the shape, thickness, and internal spacing of the transparent orthodontic appliance to ensure optimal orthodontic force at each setup stage of the transparent orthodontic appliance. Finally, the computer-based transparent orthodontic appliance design program according to the present invention aims to enable more precise and easier manufacturing of transparent orthodontic appliances by overlaying an image of the transparent orthodontic appliance onto an image of the patient's dentition (hereinafter referred to as "dentition") corresponding to each step of the tooth movement setting (Set-up) stage. [Means for solving the problem]

[0004] The present invention was devised to solve the above-mentioned technical problems, and the means for solving the problems include the following steps. The process involves generating and saving multiple images of the dental arch in which the teeth to be corrected are sequentially moved according to each orthodontic stage (S01), and displaying an arbitrary dental arch image from among the multiple images (S02). In the S02 step, a lateral reference line is set for each tooth in the displayed dental arch image, and this reference line is displayed (S03) in order to determine the overall shape of the clear orthodontic appliance. It is formed at a position a certain distance away from the reference line in the direction of the gums, and in the S02 step, an incision line corresponding to the end of the transparent orthodontic appliance is set in the displayed dental arch image and displayed (S04). Step S05: Display a video of the first treatment, in which a transparent orthodontic appliance, covering the upper and lower dentition arches, is placed over the dentition in a semi-transparent state, based on the incision lines set in step S04. In the first treatment video, the process of inputting the overall spacing value between the dentition and the clear orthodontic appliance (S06) In step S06, the interval values ​​entered are reflected, and a new secondary treatment image is displayed (S07). Step (S08): Select the teeth to be corrected in the dental arch, and for the portion of the clear orthodontic appliance that contacts the selected teeth, adjust the distance between the tooth and the inner surface of the clear orthodontic appliance to a value smaller than the distance value entered in step S06. In step S08, the corrected interval values ​​are reflected, and a new third-stage treatment image is displayed (S09). Step (S10) to input the overall thickness value of the clear orthodontic appliance. In step S10, the thickness value entered is reflected, and a new fourth-stage treatment image is displayed (S11). In the dental arch, teeth to be corrected are selected, and the portion of the clear orthodontic appliance that contacts the selected teeth is modified to a value greater than the thickness value in step S10 (S12). In step S12, the corrected thickness value is reflected, and a new fifth-stage treatment image is displayed (S13). Step (S14) to save the fifth treatment video generated in step S13. [Effects of the Invention]

[0005] A computer-aided transparent orthodontic appliance design program significantly reduces the time and effort required for orthodontic appliance production by directly outputting the appliance with a 3D printer without the need to create a separate tooth model, dramatically improving production efficiency and enhancing the economical value of the product. Furthermore, the computer-aided transparent orthodontic appliance design program according to the present invention significantly reduces the need for cooperation between dental clinics and dental laboratories, simplifying the orthodontic appliance production process by enabling direct production at dental clinics. Moreover, the computer-aided transparent orthodontic appliance design program according to the present invention allows users to easily design an optimal transparent orthodontic appliance suitable for the teeth being treated, as it allows users to change the shape of the transparent orthodontic appliance while viewing a composite treatment image in which the dentition and the transparent orthodontic appliance overlap at each stage of tooth movement setting (setup), and to visually confirm the modified treatment image in real time. The computer-aided transparent orthodontic appliance design program according to the present invention improves the fit and usefulness of 3D-printed transparent orthodontic appliances by presenting the shape, thickness, and the inner surface spacing between the teeth and the transparent orthodontic appliance to ensure optimal orthodontic force at each setting stage. [Brief explanation of the drawing]

[0006] [Figure 1] Figure 1 shows the design procedure for a transparent orthodontic appliance according to the present invention. [Figure 2] Figure 2 shows the design procedure for the attachment according to the present invention. [Figure 3] Figure 3 shows the change in orthodontic force over time according to the thickness of the clear orthodontic appliance. [Figure 4] Figure 4 shows a transparent orthodontic device according to the present invention, with a button-shaped attachment. [Figure 5] Figure 5 shows a transparent orthodontic device according to the present invention, in which a hook-shaped attachment is formed. [Figure 6] Figure 6 shows an embodiment of the transparent orthodontic device according to the present invention. [Figure 7]Figure 7 shows another embodiment of the transparent orthodontic device according to the present invention. [Modes for carrying out the invention]

[0007] The present invention includes the following steps. The process involves generating and saving multiple dental arch videos in which the teeth to be corrected are sequentially moved according to each orthodontic stage (S01), displaying an arbitrary dental arch video from among the multiple dental arch videos (S02), setting a lateral reference line for each tooth in the dental arch video displayed in step S02 to determine the overall shape of the transparent orthodontic appliance, and displaying it (S03), setting a cutting line that is formed at a predetermined distance away from the reference line in the gingival direction and corresponds to the end of the orthodontic appliance in the dental arch video displayed in step S02, and displaying it (S04), displaying a first treatment video in which a transparent orthodontic appliance enclosing the upper and lower dental arches is placed over the dental arch in a semi-transparent state based on the cutting line set in step S04 (S05), inputting the overall spacing value between the dental arch and the transparent orthodontic appliance in the first treatment video (S06), and S06 The process includes the steps of: (S07) the input interval values ​​are reflected and a new second treatment video is displayed; (S08) the selection of teeth to be straightened from the dentition and the adjustment of the interval between the teeth and the inner surface of the clear orthodontic appliance for the portion of the clear orthodontic appliance that contacts the selected teeth to a value smaller than the interval values ​​input in step S06; (S09) the adjustment of the interval values ​​adjusted in step S08 and a new third treatment video is displayed; (S10) the input of the overall thickness value of the clear orthodontic appliance; (S11) the adjustment of the thickness value input in step S10 and a new fourth treatment video is displayed; (S12) the selection of teeth to be straightened from the dentition and the adjustment of the thickness value for the portion of the clear orthodontic appliance that contacts the selected teeth to a value larger than the thickness value in step S10; and (S13) the adjustment of the thickness values ​​adjusted in step S12 and a new fifth treatment video is displayed.

[0008] A preferred embodiment of the present invention will be described in detail below with reference to the attached drawings. The advantages and features of the present invention, as well as methods for achieving them, will become clearer with reference to the embodiments described below in detail with accompanying drawings. However, the present invention is not limited to the embodiments described below and can be implemented in a variety of different forms, and these embodiments are provided to complete the disclosure of the present invention and to fully convey the scope of the invention to those who have ordinary skill in the art to which the invention pertains. Accordingly, the scope of the present invention is defined by the claims. The present invention relates to a program for designing a clear orthodontic device using a computer. The computer, as defined herein, includes various devices for performing calculations and providing results to the user, and comprises an input processing unit, a calculation unit and an output unit, and the like. In this specification, "treatment image" refers to multidimensional images, such as two-dimensional or three-dimensional images, showing the overall arrangement of teeth, and includes all images acquired by medical image processing methods using tomography. For example, this includes various types of images, such as CT (computed tomography) images, nuclear magnetic resonance computed tomography (NMR(CT)) images, positron emission tomography (PET) images, CBCT (cone-beam CT) images, and oral scanners. Furthermore, "treatment image" includes not only the original images but also two-dimensional or three-dimensional images modified by various additional reconstruction techniques. In this specification, "tooth to be treated" refers to teeth that are not in the correct position or are abnormally rotated, and for which movement of position and / or rotation of the tooth is required through orthodontics. In this specification, "lingual surface" refers to the surface of a tooth that contacts the tongue, "labial surface" refers to the surface of a tooth that contacts the lip, "buccal surface" refers to the surface of a tooth that contacts the inner surface of the cheek, "occlusal surface" refers to the upper surface of a molar or other tooth that directly bites food, and "incisive surface" refers to the obliquely inclined inner surface (the side that has the function of cutting food) of a tooth that does not have an occlusal surface (for example, anterior teeth). On the other hand, "bulge" refers to the part of the side of a tooth where the lateral width of the tooth is the greatest.

[0009] The embodiments of the present invention will be described in detail below with reference to the attached drawings. Stage S01 is the stage in which images of the dentition are generated and saved, with sequentially set movement settings for each orthodontic stage. Tooth orthodontics is carried out gradually over a long period of time through processes such as movement, rotation, embedding, and protrusion. As the teeth are gradually straightened during the orthodontic period, the clear orthodontic appliances also need to be continuously replaced and fitted in accordance with this process. In other words, tooth orthodontics is carried out in dozens of stages, and an appropriate orthodontic appliance is required for each stage. For example, if tooth orthodontics is set to 20 stages, the orthodontic target value for each stage will be set by the practitioner over the course of time, for each of the 20 stages. Ultimately, 20 images of the dentition corresponding to the 20 stages will be generated. The 3D scanner scans and saves the patient's images of the dentition, and these saved images are sent to a computer and displayed. Within the displayed images of the dentition, the practitioner generates images of the dentition corresponding to the orthodontic target for each stage. This process is called setup (Set-Up) in this invention. In other words, setup (Set-Up) refers to setting the state of the dentition after orthodontic treatment is completed for each stage. In short, stage S01 is the stage in which dozens of dental arch images are generated and saved according to the practitioner's setup, and stage S02 is the stage in which any one image is selected from the dozens of saved dental arch images and displayed. Stage S03 is the stage in which a reference line is set laterally for each tooth to determine the overall shape of the clear orthodontic appliance, and then displayed. Here, the reference line can be generated, connected, extended, interrupted, and adjusted according to the tooth. The reference line can be said to be a line that sets which part of the tooth the clear orthodontic appliance of the present invention will cover. Depending on the part of the tooth to be orthodontized where the orthodontic force is applied, the reference line may be the tip of the tooth, the connecting line of the tooth's ridge (the point where the circumference of the tooth is largest), or the boundary line with the gums. FIG. 6 shows an embodiment of a transparent orthodontic device according to the present invention, and FIG. 7 shows another embodiment of the transparent orthodontic device according to the present invention. For example, for teeth that do not require correction, the tip of the tooth may be set as the reference line, or the reference line may be set to be generated only partially, so that the transparent orthodontic device may be partially omitted for that tooth. In FIG. 6, when there is no need for correction in the innermost tooth portions on the left and right of the dental arch, it shows that the orthodontic device for the corresponding portion is omitted. In FIG. 7, when there is no need for an orthodontic device on the upper part of the teeth in the entire dental arch, it shows that the orthodontic device for that portion is omitted.

[0010] Also, when the cusp of the tooth to be corrected is set as the reference line, by setting different interval values, thickness values, etc. for the upper and lower portions based on the reference line, the correction amount required for each tooth can be satisfied. Furthermore, when a reference line that divides the left and right of the tooth to be corrected is generated, it is also possible to set different interval values, thickness values, etc. for the left and right portions based on the reference line to satisfy the correction amount required for each tooth. The S04 step is the step of forming a cutting line. The cutting line is set on the monitor and is used to form the end (edge) of the transparent orthodontic device. The cutting line is formed at a certain distance from the reference line in the direction of the tooth root. For example, it can be set with various values such as 1 mm, 2 mm, 5 mm, etc. The position of this cutting line is determined by comprehensively considering factors such as the magnitude of the correction force required for the corresponding tooth and the comfort of wearing the transparent orthodontic device. The S05 step is the step of displaying a first treatment image in which a transparent orthodontic device that entirely covers the teeth is worn for the tooth row image displayed on the display. Here, the semi-transparent transparent orthodontic device that covers the tooth row is displayed in a form that covers the upper tooth row and the lower tooth row according to the cutting line set in the S04 step. This display method can display the upper and lower tooth rows simultaneously or separately. The first treatment image shows the state where the transparent orthodontic device is worn on the teeth (the state where the image of the transparent orthodontic device overlaps with the image of the teeth), and corresponds to the initial stage screen for the design of the transparent orthodontic device. Stage S06 is the stage where the spacing values ​​between the teeth and the clear orthodontic appliance are entered in the first treatment video, and stage S07 is the stage where the entered spacing values ​​are reflected and a new second treatment video is displayed. The spacing between the teeth and the clear orthodontic appliance directly affects the orthodontic force on the teeth. If the spacing value is too small (there is almost no space between the teeth and the orthodontic appliance), the teeth may not fit properly, and it may cause severe pain to the patient during the orthodontic process. Conversely, if the spacing is too large (the gap between the teeth and the orthodontic appliance widens), the appliance may fit easily, but the problem of reduced orthodontic force occurs. Stage S06 is the stage where the overall spacing values ​​between the teeth and the clear orthodontic appliance are set, taking into consideration the overall fit and orthodontic force of the clear orthodontic appliance, and corresponds to the process in which the clear orthodontic appliance is first designed.

[0011] Stage S08 is the stage in which the spacing value between the tooth and the inner surface of the clear orthodontic appliance is newly modified and entered to a smaller value in order to apply the optimal orthodontic force and direction of force to the tooth to be straightened. Stage S09 is the stage in which the spacing value entered in Stage S08 is reflected and a new third-stage treatment image is displayed. The contact points between the clear orthodontic appliance and the teeth being treated need to be narrower than other parts. This is to ensure the appliance is more closely fitted to the teeth and to apply corrective force. Spacing values ​​can be entered by clicking a menu button on the screen, by opening a separate window (pop-up) to enter values, or by dragging the clear orthodontic appliance on the screen with the mouse. Once the spacing values ​​between the teeth and the clear orthodontic appliance are entered, a third-stage treatment image is immediately displayed on the screen based on the input, allowing the practitioner to instantly and visually confirm whether the spacing between each tooth and the clear orthodontic appliance is set correctly. If there are any errors, corrections can be made in real time by immediately re-entering the spacing values. Tooth correction is performed by its movement and / or rotation, intrusion and / or extrusion. For example, for a tooth to be corrected that requires rotational correction, a moment must be applied to the tooth to rotate it to the target angle. To apply a rotational moment to the tooth to be corrected, a force is required for the left and right teeth to push against each other in the directions of each lingual surface and labial surface (or buccal surface: inside of the cheek). To exert this correction force, it is necessary to further reduce the set interval value (S201) or increase the set thickness (S202) in the direction of extruding the tooth. Eventually, to extrude the tooth, a separate corrected input of an interval value smaller than the overall interval value at that part is required. Therefore, the S201 step and the S202 step correspond to the process of making the interval value or thickness value smaller or larger than the set value in the direction of extruding the tooth, particularly in the teeth where rotational correction is required. The S301 step and the S302 step are the design steps of the clear aligner for teeth that particularly require extrusion correction.

[0012] When extrusion correction is particularly required among the teeth to be corrected, it is necessary to apply an extrusion force to the teeth. To apply such an extrusion force to the teeth, it is necessary to further reduce the interval value by a predetermined length in the direction of the tooth root based on the cusp baseline of the tooth. In this case, with the cusp baseline as the branching point, it is desirable that the interval value in the direction of the tooth root is 0.1 mm to 0.5 mm smaller than the interval value in the direction of the tooth end. If the difference is more than this interval value, a predetermined extrusion force cannot be obtained. Conversely, if it is set below this interval value, serious problems will occur in the wearability (ease of wearing) of the device. Such an extrusion correction method cannot be expected in a conventional clear aligner using a sheet crimping method (in the case of the crimping method, undercuts occur at the connection between the tooth and the tooth root), which can be said to be a unique effect of the present invention. Step S10 is the step where you input the overall thickness of the clear orthodontic appliance. In step S11, the thickness value entered in step S10 is reflected and a new fourth treatment image is displayed. This is the process of inputting and displaying the overall thickness of the clear orthodontic appliance while visually confirming its appropriateness in real time in order to determine its overall thickness. Stage S12 is the stage where the thickness value of the part of the clear orthodontic appliance that contacts the teeth to be corrected is individually corrected and entered, and stage S13 is the stage where the thickness value entered in stage S12 is reflected and a new fifth-stage treatment image is displayed. In order to compress the teeth to be corrected and cause a change in tooth position (or tooth rotation), the thickness of the clear orthodontic appliance must be above a certain level. If the thickness of the clear orthodontic appliance is not above a certain level, the desired orthodontic effect cannot be achieved. However, if the thickness of the clear orthodontic appliance is made excessively large just to ensure orthodontic force, the wearing comfort will be greatly worsened and will not only cause discomfort to the patient, but it will also become impossible to obtain any further additional orthodontic force once the thickness exceeds a certain level. The orthodontic method using clear orthodontic appliances is a method in which the teeth are corrected little by little, and when their position or rotation reaches the target value, the clear orthodontic appliance for the next stage is replaced and fitted, and the orthodontic treatment for the next stage is performed with the newly replaced clear orthodontic appliance. Therefore, the clear orthodontic appliance needs to be replaced at regular intervals for each stage.

[0013] Figure 3 shows the time-dependent change in orthodontic force according to the thickness of the clear orthodontic appliance. The minimum thickness of a clear orthodontic appliance (the part that contacts the tooth being corrected) that maintains orthodontic force over the typical 7 to 14-day replacement cycle is 0.3 mm. Studies have shown that when the thickness exceeds 1 mm, patients experience considerable discomfort, and the appliance does not actually exert any further orthodontic force. Therefore, it is desirable that the thickness of the part of the clear orthodontic appliance that contacts the tooth being corrected be at least 0.3 mm and not exceed 1 mm, with a thickness of 0.3 mm to 0.7 mm being even more desirable. On the other hand, as already explained, if extrusion correction is necessary, it can be done by adjusting the spacing values. It is also possible to introduce positive force to teeth targeted for extrusion correction by setting the thickness to be further increased by a predetermined length in the gingival direction using a reference line based on the flavor portion of the tooth. For example, the thickness can be increased by 1 mm to 2 mm in the gingival direction, using the flavor portion reference line as a branching point. In this way, a difference in orthodontic force is created between the upper and lower teeth with respect to the reference line, positive force is introduced to the teeth, and the transparent orthodontic device according to the present invention will have an extrusion correction effect. The method for inputting the thickness is the same as the method for inputting the spacing values, and can be done by menu settings or another pop-up window (pop-up), and this has already been explained, so the input method will be omitted below. Stage S13 is the stage in which the fifth treatment image generated in the above-mentioned stage S12 is saved, and in stage S14, the saved fifth treatment image and the sixth treatment image saved in S105 are sent to the patient's terminal. The patient can check in advance the clear orthodontic appliance they will be wearing in 2D or 3D images through their terminal (which may require a specific app to be installed beforehand). The fifth treatment image, saved in stage S14, may be a two-dimensional image such as a cross-section, or it may be a three-dimensional image. These images are sent to 3D printers and used in the fabrication of transparent orthodontic appliances.

[0014] On the other hand, some patients may have severe malocclusion, and in such cases, it may be necessary to secure additional orthodontic force in addition to securing it by adjusting the spacing and thickness of the clear orthodontic appliance. Stage S101 is the stage where one selects whether or not to add button-shaped attachments that are attached to the inner surface of the clear orthodontic appliance that comes into contact with the teeth being treated. As shown in Figure 4, the button-shaped attachments are protrusions formed on the inner surface of the clear orthodontic appliance, exerting stronger orthodontic force on the teeth being treated for more effective correction. When additional orthodontic force is required in addition to the normal orthodontic force, selecting button-shaped attachments allows for the design of a clear orthodontic appliance with stronger orthodontic force. Figure 4 shows a clear orthodontic appliance in which attachments are installed to induce rotational correction of the teeth by applying a rotational moment to the teeth being treated. The attachments are installed on the inner surface of the clear orthodontic appliance and on the opposite side to apply a rotational moment to the teeth. The position of these attachments can be designed in various ways depending on the environment of the teeth being treated, other than as shown in Figure 4, and Figure 4 is merely one embodiment of the present invention. Stage S102 is the stage where you choose whether or not to add hook-shaped attachments that will be attached to the outside of the clear orthodontic appliance that comes into contact with the teeth being straightened. When additional orthodontic force is needed on the teeth being treated, in addition to the normal orthodontic force, hook-type attachments that are attached to the outside of the clear orthodontic appliance may be used, as shown in Figure 5. Unlike the button-type attachments mentioned earlier, hook-type attachments are formed on the outside of the clear orthodontic appliance. Of course, it may be possible to use both types of attachments in combination in some cases. Stage S103 is the stage in which the shape, size, and mounting position of the button-type and hook-type accessories selected in stages S101 and S102 are set, and stage S104 is the final modified stage 6th order This is the stage where the treatment image is displayed. For example, the shape of the button-shaped attachment can be changed to various shapes such as circular, square, or rhombus, and its size (cross-sectional area) can also be freely changed according to the environment of the tooth to be orthodontized. All such modifications are within the technical scope of the present invention. In the S103 stage, if the use of a button-shaped attachment and / or a hook-shaped attachment has been decided, the size (degree of protrusion, surface area, etc.) and position are determined. Once this process is complete, 6th orderThe treatment image is completed and saved. It will be obvious to those skilled in the art that the button-type and hook-type attachments described herein can be modified in various ways in terms of type and shape. It is also perfectly possible to design the system by creating a separate folder listing button-type and hook-type attachments of various shapes and sizes, and then opening that folder as needed and overlaying it on the display screen. Therefore, such modifications are merely variations of the present invention and do not deviate from the technical essence of the present invention; they are naturally included within the scope of the rights of the present invention.

[0015] A program based on the present invention is a computer program (also called a program, software, software application, or code) that includes machine instructions for a programmable processor and can be implemented using a high-level process and / or object-oriented programming language and / or assembly / machine language. Each step described in this application can be executed in parallel, sequentially, or in a different order. There are no particular limitations as long as the results intended by the technology disclosed in this application are achieved. The specific embodiments described above do not limit the scope of protection of this application. A person of ordinary skill in the art can make various modifications, combinations, subcombinations and substitutions based on design requirements and other factors. Any modifications, equivalent substitutions, or improvements made within the scope of the ideas and principles of this application are all within the scope of protection of this application.

Claims

1. Step (S01): Generate and save multiple dental arch images in which the teeth to be straightened are sequentially moved and set for each orthodontic stage; Step (S02): Display any one dental arch image from the multiple dental arch images; Step (S03): In the dental arch image displayed in step S02, set a lateral reference line for each tooth in order to determine the overall shape of the transparent orthodontic appliance, and display this line; Step (S04): Set a cutting line that is formed at a certain distance in the gum direction from the reference line, and in the dental arch image displayed in step S02, set a cutting line corresponding to the end of the orthodontic appliance, and display this line; Step (S05): Display a first treatment image showing the transparent orthodontic appliance, which encloses the upper and lower dental arches according to the cutting line set in step S04, semi-transparently placed over the upper and lower dental arches; Step (S06): Inputting the overall spacing value between the dentition and the clear orthodontic appliance in the first treatment image; Step (S07): Reflecting the spacing value input in step S06 and displaying a new second treatment image; Step (S08): Selecting teeth to be straightened in the upper and lower dentition, and correcting the spacing value between the teeth and the inner surface of the clear orthodontic appliance for the portion of the clear orthodontic appliance that contacts the selected teeth to a spacing value smaller than the spacing value input in step S06; Step (S09): Reflecting the spacing value corrected in step S08 and displaying a new third treatment image; Step (S10): Inputting the overall thickness value of the clear orthodontic appliance; Step (S11): Reflecting the thickness value input in step S10 and displaying a new fourth treatment image; A program for designing a transparent orthodontic appliance using a computer stored on media, characterized in that it performs the following steps: selecting teeth to be corrected in the upper and lower dentition, and modifying the thickness value of the portion of the transparent orthodontic appliance that contacts the selected teeth to a value greater than the thickness value in step S10 (S12); displaying a new fifth treatment image that reflects the thickness value modified in step S09 (S13); and saving the fifth treatment image generated in step S13 (S14).

2. Perform all steps from S01 to S014 as described in Section 1 above. The step (S101) involves choosing whether or not to add button-shaped attachments to the inside of the clear orthodontic appliance that comes into contact with the teeth being straightened; The step of choosing whether or not to add a hook-shaped attachment to the outside of the clear orthodontic appliance that comes into contact with the teeth being straightened (S102); If it is selected to add a button-shaped or hook-shaped attachment in steps S101 and S102, step S103 is to set the shape, size and mounting position of the selected button-shaped and hook-shaped attachments; Stage (S104) where the sixth treatment video, modified according to stage S103, is displayed; The stage in which the 6th treatment video generated in stage S104 is saved (S105); A program for designing transparent orthodontic appliances using a computer, characterized by being stored on media, to perform these tasks.

3. Those described in paragraph 1 or 2, The aforementioned reference line is, In the case of the upper jaw teeth, It is formed at one of the following locations: the lower end of the tooth, the point where the tooth bulges, or the boundary between the tooth and the gum. In the case of the mandibular dentition, It is characterized by being formed at one of the following locations: the upper end of the tooth, the point where the tooth bulges, or the boundary between the tooth and the gum. A program that uses computers to design transparent orthodontic appliances.

4. In claim 3, The transparent orthodontic device is characterized in that the portion that comes into contact with the tooth to be orthodontized, which requires rotational correction, includes a step (S201) to further reduce the spacing value set in the direction of pushing the tooth, or a step (S202) to further increase the set thickness value. A program that uses a computer to design transparent orthodontic appliances.

5. In claim 3, Regarding a portion of the orthodontic appliance that comes into contact with a tooth requiring extrusion, A step (S301) to further reduce the spacing value for a portion corresponding to a maximum length of 2 mm in the gingival direction from the reference line corresponding to the tooth protrusion; and The method further includes a step (S302) of displaying the interval value corrected in step S201, A program that uses a computer to design transparent orthodontic appliances.

6. In claim 4, The aforementioned S12 step is, The input thickness value is determined within the range of 0.3 mm to 0.7 mm. Characterized by being stored on media, A program that uses a computer to design transparent orthodontic appliances.

7. In claim 5, The aforementioned S12 step is, The input thickness value is determined within the range of 0.3 mm to 0.7 mm. A program that uses a computer to design transparent orthodontic appliances.

8. In claim 6 or claim 7, The process further includes the step (S15) of transmitting the fifth and sixth treatment videos saved in steps S14 and S105 to the patient's terminal. A program that uses a computer to design transparent orthodontic appliances.

Images