KR20220056759A - Data processing method and data processing apparatus - Google Patents

Abstract

The present invention relates to a data processing method and a data processing apparatus. A data processing method according to the present invention includes the steps of: generating a first arch line based on dental data; creating a second arch line different from the first arch line from the first arch line; and moving a target tooth among the dental data toward the second arch line according to the input signal of a user.

Description

Data processing method and data processing apparatus

The present invention relates to a data processing method and an apparatus using the same, and more particularly, to a method and apparatus for processing dental data to correspond to a change in a predetermined condition.

In the orthodontic plan, conventionally, a plaster model is obtained by taking impressions of the patient's oral cavity, and then a prosthetic treatment product is manufactured to match the plaster model and provided to the patient. Errors occurring in the production of plaster models made it difficult to provide precise prosthetic treatment to patients, and methods of acquiring oral information as data have been continuously researched and developed to solve these problems.

With the development of 3D scanning technology, it has become possible to acquire 3D surface model data by scanning the inside of the oral cavity including the patient's teeth, gingiva, and arch. Through the obtained 3D surface model data, the therapist was able to virtually perform various active activities such as application of prosthetic treatment, simulation of orthodontic planning, determination of carious teeth, and determination of occlusion.

On the other hand, the 3D surface model data needs to revise the treatment plan already presented in establishing a treatment plan based on the obtained data. At this time, a method of establishing an individualized treatment plan that meets the needs of a user and/or a patient by changing an archline generated based on dental data among the acquired data is being studied.

KR 10-2161438 B1

SUMMARY OF THE INVENTION It is an object of the present invention to provide a data processing method for aligning dental data using a second archline having a shape different from that of a pre-generated first archline, and an apparatus using the same.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A data processing method according to the present invention for achieving the above object includes generating a first archline based on dental data, and generating a second archline different from the first archline from the first archline. and moving the target tooth to be moved among the tooth data toward the second arch line according to the user's input signal.

In addition, the first archline may be a spline curve in contact with the contours of a plurality of teeth constituting the tooth data.

In addition, the first arch line may include at least one of an arch line center point formed between center values and at least two flow points formed on both sides of the arch line center point.

In addition, the second arch line may be generated by at least one of parallel movement of the first arch line by the center point of the arch line and shape deformation by the pour point.

Also, the shape deformation may be at least one of a change in a width of the first arch line according to a plane movement of the pour point and a change in a smile line of the first arch line according to a normal direction movement of the plane of the pour point.

In addition, the moving may include moving the target tooth to be moved among the tooth data in at least one of a buccal direction and a mesial direction determined from the tooth data.

In addition, a direction toward the first arch line may be the same as a direction toward the second arch line, or a direction toward the first arch line may be the same as a direction toward the second arch line. there is.

In addition, the moving may include generating at least one virtual line connecting the target tooth to be moved among the tooth data and the second arch line, by the at least one virtual line, the target tooth and determining the shortest distance between the second arch line and the tooth data moving step of moving the target tooth in a direction toward the second arch line.

In addition, the generating of the virtual line may include generating a virtual circle using the target value and at least one adjacent tooth adjacent to the target value, and a central virtual line connecting the center of the circle and the center point of the target value. Including, it is possible to generate at least one buccal-direction virtual line parallel to the central virtual line.

Also, the adjacent value may include a first adjacent tooth formed on one side based on the target value, and a second adjacent tooth formed on the other side based on the target value.

In addition, the generating of the virtual line includes generating a virtual circle using the target tooth, a main adjacent tooth adjacent to the target tooth, and a sub-adjacent tooth adjacent to the main adjacent tooth and spaced apart from the target tooth, At least one buccal-direction virtual line parallel to the central virtual line may be generated including a central virtual line connecting the center of the circle and the center point of the target tooth.

In addition, the generating of the virtual line may include forming a virtual circle by using the target tooth, an adjacent tooth adjacent to the target tooth, and a virtual adjacent tooth adjacent to the target tooth and formed symmetrically with the adjacent tooth based on the target value. It is possible to generate at least one buccal direction virtual line parallel to the central virtual line, including a central virtual line connecting the center of the circle and the center point of the target tooth.

In addition, the determining of the shortest distance may include determining a virtual line having a shortest distance connecting the contour of the target tooth and the second arch line among the generated virtual lines.

In addition, in the step of moving the tooth data, the target value may be moved in parallel in the buccal direction along the virtual line where the target value is determined.

In addition, in the step of moving the tooth data, the target teeth move in parallel in the male direction perpendicular to the buccal direction, and the buccal direction parallel movement may be sequentially performed with the longitudinal parallel movement.

Also, the moving may be sequentially performed according to a distance from a center point of an arch line formed between center values of the second arch line to each tooth data.

In addition, at least some of the teeth included in the tooth data may have different buccal directions and different longitudinal directions.

On the other hand, the data processing apparatus according to the present invention includes a data storage unit in which archline data and tooth data are stored, a control unit that loads and processes data stored in the data storage unit, and displays the processing process or processing result of the control unit and a display unit, wherein the processing may be to rearrange the tooth data according to a second archline different from the pre-stored first archline.

In addition, the controller may include an arch line generator generating the second arch line, a target tooth to be moved among the tooth data, and the second arch to rearrange the tooth data in the second arch line. A virtual figure generating unit generating at least one virtual line connecting lines, a distance calculating unit determining the shortest distance between the target value and the second arch line by the at least one virtual line, and the target value It may include a data adjusting unit for moving in the direction toward the second arch line.

In addition, the virtual figure generating unit generates a virtual circle using the target value and at least one adjacent value adjacent to the target value, and includes a central virtual line connecting the center of the circle and the center point of the target value At least one imaginary line in a buccal direction parallel to the central imaginary line may be generated.

The distance calculator may determine a virtual line having a shortest distance from the central virtual line and at least one buccal direction virtual line parallel to the central virtual line to the contour of the target tooth and the second arch line.

Also, the data adjusting unit may move in parallel in the buccal direction along the virtual line on which the target value is determined.

In addition, the data adjusting unit, the target value may be moved in parallel in a mesial direction orthogonal to the term “buckle”, and the parallel movement in the buccal direction may be sequentially performed with the parallel movement in the mesial direction.

In addition, the data adjusting unit moves the target tooth to be moved among the tooth data in a buccal direction toward the second arch line, and the buccal direction of the target tooth toward the first arch line is the second of the target tooth. It may be the same as the direction of the buccal toward the arch line.

In addition, the data adjusting unit may be configured to move the target tooth in a male direction orthogonal to the buccal direction, and the target tooth's magnetic direction toward the first arch line is the target tooth toward the second arch line. may be the same as

In addition, the first arch line includes at least one of an arch line center point formed between center values and at least two flow points formed on both sides of the arch line center point, and the second arch line is the first arch line is generated by at least one of parallel movement by the center point of the arch line or shape deformation by the pour point of A curve can be created as a second archline.

Also, the shape deformation may be at least one of a change in a width of the first arch line according to a plane movement of the pour point and a change in a smile line of the first arch line according to a normal movement of the one side of the pour point.

According to the present invention, since a second archline having a shape different from the pre-generated first archline is generated and tooth data is rearranged, there is an advantage in that a customized treatment plan can be obtained.

In addition, when the tooth data is rearranged with respect to the second arch line, since the tooth data is moved in parallel in the buccal direction and the mechanical direction, there is an advantage in that the data processing operation is easy.

In addition, since each tooth has a different buccal direction and a different longitudinal direction for each tooth, there is an advantage in that the tooth data is precisely rearranged according to the curve of the second arch line.

1 is a schematic flowchart of a data processing method according to the present invention.
2 to 10 are diagrams for explaining in detail a process in which the data processing method according to the present invention is performed.
11 is a schematic flowchart for explaining an exemplary process of moving tooth data in the data processing method according to the present invention.
12 is a view for explaining the movement of the tooth data in the buccal direction toward the second arch line.
13 is a diagram for explaining that the tooth data moves in the radial direction toward the second arch line.
14 is a diagram after data processing is completed according to the data processing method according to the present invention.
15 is a configuration schematic diagram of a data processing apparatus for performing a data processing method according to the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

1 is a schematic flowchart of a data processing method according to the present invention, FIG. 2 is a diagram showing pre-generated tooth data and a first arch line, and FIG. 3 is a diagram in which a second arch line different from the first arch line is generated It is also

The data processing method according to the present invention includes the steps of generating a first archline based on dental data (S110), generating a second archline different from the first archline from the first archline (S120), and a user It may include a step (S130) of moving the target tooth to be moved among the tooth data toward the second arch line according to the input signal of

1 to 3 , before the data processing method according to the present invention is applied, oral data including tooth data may be pre-generated to have a first arch line ( S110 ). In this case, the dental data may be obtained using X-ray, computed tomography (CT), magnetic resonance imaging (MRI), or the like. Also, the tooth data may be obtained through a 3D scanner. The 3D scanner may include a table type scanner and a handheld type scanner. The table-type scanner may scan the plaster cast, and the handheld scanner may scan at least one of the plaster cast and the patient's actual oral cavity.

As shown in FIG. 2 , the first archline 100 may be a spline curve in contact with the contours of the plurality of teeth 301 , 302 , 303 , 307 , and 308 constituting the tooth data 300 . The first arch line 100 may be formed through interpolation to have a configuration in contact with the surfaces of all formed teeth. In more detail, the first arch line 100 in contact with the contours of each of the plurality of teeth 301, 302, 303, 307, 308 corresponds to a new arch line (second arch line) generated after the teeth are formed. It can represent the shape in which the teeth are arranged before being moved and rearranged.

As a drawing for explaining the present invention, data of a group of teeth formed in the maxilla or mandible is displayed. Also, this figure has 14 teeth. However, the present invention is not necessarily limited to the number and shape of these teeth, and it should be understood as an exemplary description for smoothly explaining the present invention. Hereinafter, tooth 1 301, tooth 2 302, tooth 3 303, tooth 7 (307 or centroid), tooth 8 (308 or center) with respect to the shown teeth for convenience of explanation. teeth), and each tooth may be referred to as a target tooth or an adjacent tooth (first adjacent tooth or second adjacent tooth, major adjacent tooth or minor adjacent tooth) depending on the situation.

The first arch line 100 may include an arch line center point 101 formed between the center values 307 and 308 , and a middle line 102 in contact with the arch line center point 101 . The arch line center point 101 may be defined in a portion corresponding to the center of the center values 307 and 308 in the first arch line 100 , and when the arch line center point 101 is selected and dragged to another location, the entire arch is arched. Lines can be translated. When the entire arch line moves in parallel through the middle line 102 , the second arch line 200 may be generated at the position in which the arch line is moved in parallel ( S120 ). If the arch line is moved in parallel, the teeth can be rearranged by moving the entire teeth forward, backward, left and right, and this makes it possible to balance teeth and face when facial data is matched with oral data. For example, when the teeth are formed low with respect to the face data, the arch line can be adjusted so that the teeth are formed in a balanced overall by moving the middle line 102 upward. In addition, when the teeth are formed by being biased to one side with respect to the face data, the arch line can be adjusted so that the teeth are formed in a balanced manner as a whole by moving the middle line 102 to the other side opposite to the one side. In addition, when the teeth are formed to be inclined, the angle of the arch line may be adjusted so that the teeth as a whole are formed in a balanced manner.

At least two pour points 103 and 104 formed on both sides of the central point 101 of the arch line may be included on the first arch line 100 . As shown in the drawing, pour points 103 and 104 may be formed at both ends of the first arch line 100, but they are not necessarily formed at this position, and one arch line may have only two pour points. Nor can it be That is, on the first arch line 100, both sides of the center point 101 of the arch line may be formed anywhere within the curve constituting the first arch line 100, and the number of pour points depends on the allowable range of system resources, necessary It can be adjusted according to the number of reference points.

Referring to FIG. 3 , the first arch line 100 and the second arch line 200 are illustrated. The second archline 200 is substantially a new archline created by deformation of the first archline 100 , and the data processing method according to the present invention rearranges the dental data with respect to the second archline 200 . will do The second arch line 200 may have a relatively wide curved shape compared to the first arch line 100 by extending the pour points 103 and 104 of the first arch line 200 in the width direction. . However, the present invention is not necessarily limited thereto, and if necessary, the second arch line 200 may reduce the pour points 103 and 104 of the first arch line 100 in the width direction to be relatively larger than the first arch line 100 . It may have a narrow curved shape. The second arch line 200 may also include an arch line center point 201 formed between the center values 307 and 308 , and a middle line 202 in contact with the arch line center point 201 . As described above, the second arch line 200 may be formed in a shape in which the width of the first arch line 100 is changed by plane movement of the pour points 103 and 104 of the first arch line 200 .

Meanwhile, as shown in FIG. 3 , the second arch line 200 may be generated by deforming the first arch line 100 in a plan view when the tooth is viewed from the upper side, but is not limited thereto. That is, the second arch line 200 may be generated in a three-dimensional space in which oral data is displayed in three dimensions. In this case, the second arch line 200 may be generated by moving the first arch line 100 in parallel on a plane in a three-dimensional space, or may be generated by adjusting the pour points 103 and 104 in the width direction. Alternatively, the second arch line 200 is formed so that the pour points 103 and 104 of the first arch line 100 are adjusted in a normal direction perpendicular to the ground in the drawing so that the dental data as a whole is inclined in a normal direction perpendicular to the ground. may be obtained, and the smile line may be changed accordingly.

The second archline 200 may be generated by at least one of translational movement by the center point 101 of the archline of the first archline 100 and shape deformation by the pour points 103 and 104 . That is, the second arch line 200 may be generated by moving the first arch line 100 in parallel or deforming the shape. As described above, the pour points 103 and 104 are only two points mentioned for convenience of description, but a larger number of pour points may be included in the archline (the first archline or the second archline).

Hereinafter, the step ( S130 ) of moving the target tooth toward the second arch line will be described in detail.

2 to 10 are diagrams for explaining in detail a process in which the data processing method according to the present invention is performed.

The moving step (S130) includes generating (S131) at least one virtual line connecting the target tooth to be moved and the second arch line among the dental data, and by using the at least one virtual line, the target It may include a step of determining the shortest distance between the tooth and the second arch line (S132), and a tooth data movement step of moving the target tooth toward the second arch line (S133).

Before describing the step (S131) of generating the virtual line, a method of determining a center point for each tooth constituting the tooth data will be described.

Referring to FIG. 4 , a central point may be detected with respect to an arbitrary tooth 400 . For example, it is possible to surround the outline 410 of an arbitrary tooth 400 with a boundary box 420 in the form of a rectangular box, and find a center point 410C for the corresponding tooth 400 . The central point 410C is formed by mesh points in a triangular shape with respect to the teeth, and can be found by analyzing these mesh points. In addition, when the tooth 400 fills most of the boundary box 420, the x-axis boundary values (xmin, xmax) and the y-axis boundary values (ymin, ymax) of the boundary box 420 are obtained, and the boundary box 420 is obtained. ) may be regarded as the center point 410C of the tooth 400 . A virtual line may be generated through the center point 410C of the tooth 400 obtained in this way. The concept of such a boundary box 420 can be extended to the concept of a boundary cube in three dimensions, and by projecting the center of the boundary cube to the surface, the coordinates of the center point for each plane are obtained. can

5 to 7 , in the step of generating a virtual line ( S131 ), a virtual circle is created using a target tooth and at least one adjacent tooth adjacent to the target tooth, and the center C of the circle and the target tooth are At least one imaginary line in a buccal direction parallel to the central imaginary line may be generated including the central imaginary line connecting the central points. At this time, the buccal-direction virtual line is generated assuming that the respective center points of the tooth data are arranged on the same plane. It can have a buccal direction.

A step of generating an imaginary line using the first to third teeth 301 to 303 will be described. Exemplarily, when the second tooth 302 is the target tooth to be moved, the step of generating a virtual line ( S131 ) includes the second tooth 302 as the target tooth, and at least one adjacent tooth 1 adjacent to the target tooth. A virtual circle having a center C may be created using the No. tooth 301 or the No. 3 tooth 303 . At this time, the method of generating the virtual circle may be to obtain a circle in which the center points 302C and 301C, or 302C and 303C of each tooth are located on the circumference. In practice, since three points on the circumference must be located in order to obtain a circle having one radius of curvature, the center point 302C of the target tooth number 2 and the center point 301C of the adjacent tooth number 1 to create a virtual circle. and the center point 303C of tooth 3 may be used as a reference point.

A step ( S131 ) of generating a virtual line will be described with reference to FIG. 6 . As described above, when a virtual circle having a center (C) is generated, a central virtual line connecting the center (C) of the circle and the center point of the target tooth (ie, 302C, the center point of the second tooth) may be generated. . In addition, at least one imaginary line in a buccal direction parallel to the central imaginary line may be additionally generated. As shown in FIG. 6 , since the imaginary line passing through the center point 302C of the second tooth, which is the target tooth, is L4, L4 may act as the central imaginary line. Meanwhile, the plurality of virtual lines L1 , L2 , L3 , L5 , L6 , and L7 parallel to the central virtual line may connect the target tooth and the second arch line 200 while having the same direction as L4 . At least two virtual lines may be generated including the central virtual line, and the number of generated virtual lines may be adjusted as necessary. The greater the number of virtual lines to be generated, the more the precision of dental data processing can be improved.

Referring to FIG. 7 , in the step of determining the shortest distance ( S132 ), a virtual line having the shortest distance connecting the contour of the target tooth and the second arch line through the generated virtual lines may be determined. At this time, it is noted that the interval distance d4 of the central virtual line L4 passing through the center point 302C of the second tooth, which is the target tooth, is longer than the interval distance d5 of the adjacent virtual line L5. That is, an imaginary line passing through the center point of the tooth may not always reach the second arch line 200 by the shortest distance than other imaginary lines. Accordingly, as shown in FIG. 7 , the virtual line L5 may be determined as the virtual line having the shortest distance.

Therefore, it is possible to select a path through which the tooth can move in the shortest distance by generating at least two virtual lines including the central virtual line, which saves system resources and the second arch line ( 200) has the advantage of preventing overlapping.

Referring to FIGS. 7 and 8 , the tooth data movement step ( S133 ) may cause the target tooth to move in parallel in the buccal direction along the determined virtual line. On the other hand, the buccal direction may be interpreted as a 'ball direction' in a dictionary meaning, but the buccal direction in the present invention may mean a direction in which a virtual line is formed. That is, the buccal direction is a direction in which the virtual line extending from the center (C) of the virtual circle to the center of the target tooth is directed. When the target tooth moves in parallel in the buccal direction, the contour point P2 of the target tooth, which is the second tooth 302, is parallel to the second arch line 200 toward the second arch line 200 so that it coincides with the point P1 of the second arch line 200. movement is performed.

Meanwhile, in the moving step ( S130 ), the target tooth to be moved among the dental data may be moved in at least one of the buckling direction and the mechanical direction determined from the tooth data. In this case, since the buccal direction is determined from the relationship between the center of the target tooth and the adjacent teeth, the direction of the buccal toward the first arch line of the target tooth may be the same as the direction of the buccal toward the second arch line of the target tooth. That is, since the direction in which the target tooth moves is constant regardless of the shape of the arch line, the movement of the target tooth does not involve rotation of the tooth, and it is possible to obtain a faster and more stable treatment model.

Meanwhile, the positions of the contour point P2 of the target tooth and the point P1 of the second arch line 200 may be changed according to the changed arch line determined according to the user's input signal. This is because the direction of the buccal in which the target tooth moves is always the same regardless of the arch line being changed. In addition, depending on the shape of the changed arch line, a different virtual line forming the shortest distance between the target tooth to be moved and the changed arch line may be selected differently, and even if the same virtual line is selected, the contour of the target tooth is the arch line before the change It may not be tangent to the same point (so-called marker) as . Accordingly, the target tooth may not rotate according to the change of the arch line, and the target tooth does not necessarily match a specific point of the arch line. Accordingly, it is possible to obtain a treatment model that has a faster calculation speed and is more stable than a method in which the target value is matched with a specific point of the arch line.

In addition, since the data processing method according to the present invention does not substantially overlap the dental data on the second archline 200, there is an advantage in providing a more improved treatment model to the user.

Hereinafter, a step of generating a virtual line according to another embodiment will be described.

Referring to FIG. 9 , since adjacent teeth are not formed on both sides of the first tooth 301 corresponding to a molar, it is difficult to form a virtual circle. In this case, the step of generating the virtual line ( S131 ) is a method of generating a virtual circle using a target tooth, a main adjacent tooth adjacent to the target tooth, and a sub-adjacent tooth formed to be spaced apart from the target tooth when adjacent to the main adjacent tooth. this can be used That is, the first tooth 301 has only the second tooth 302 as an adjacent tooth, but the second tooth 302 is regarded as the main adjacent tooth and the third tooth 303 is regarded as the minor adjacent tooth, and each central point 301C, 302C. 303C) can be created in the circumference of the virtual circle. Therefore, a central virtual line can be generated so that the center 301C of the target tooth 301 is connected from the center C of the virtual circle, and at least one buccal direction virtual line parallel to the central virtual line is added. can be created with Hereinafter, the step of determining the shortest distance (S132) and the step of moving the tooth data (S133) may be performed in the same manner as described above.

In addition, another method of forming a virtual circle with respect to the first tooth 301 corresponding to the molar when the target tooth is the first tooth 301 with reference to FIG. 10 is presented. In the step of generating the virtual line ( S131 ), a virtual circle may be generated using the target tooth, the adjacent tooth adjacent to the target tooth, and the virtual adjacent tooth adjacent to the target tooth and formed symmetrically with the adjacent tooth based on the target value. That is, the first tooth 301 has only the second tooth 302 as an adjacent tooth, but the second tooth 302 is a virtual adjacent tooth 302' at a symmetrical position with respect to the first tooth 301. can create Accordingly, in this case, the center point 302'C of the virtual adjacent tooth 302', the center point 301C of the first tooth 301 as the target tooth, and the center point 302C of the adjacent tooth 2 302 through You can create an imaginary circle. Accordingly, a central imaginary line can be generated so that the center 301C of the target tooth 301 is connected from the center C' of the imaginary circle, and at least one buccal-direction imaginary line parallel to the central imaginary line can be generated. You can create more. Hereinafter, the step of determining the shortest distance (S132) and the step of moving the tooth data (S133) may be performed in the same manner as described above.

Although the above description describes the case where the target tooth corresponds to a molar, it is not necessarily limited thereto, and it is analyzed that there is no tooth in the corresponding area in consideration of the part where tooth extraction occurred and the part where tooth extraction is scheduled during orthodontic treatment. The same can be applied when it should be.

11 is a schematic flowchart for explaining an exemplary process of moving tooth data in the data processing method according to the present invention.

The teeth moved in the buccal direction may overlap or be spaced apart from each other according to the width of the second arch line. However, for the purpose of orthodontic treatment, all teeth must be arranged neatly without overlapping or spaced apart. Accordingly, the teeth moved in the buccal direction may be moved in parallel in a direction different from the buccal direction so that the respective teeth are in contact with each other. More specifically, referring to FIG. 11 , the tooth data movement step ( S133 ) may cause the target tooth to move in parallel in the mesial direction orthogonal to the buckcal direction. The mesial direction may mean a central direction in a dictionary meaning, but in the present specification, it may be interpreted as a direction orthogonal to the buccal direction defined for the target tooth. On the other hand, the parallel movement in the male direction may be sequentially performed following the parallel movement in the buccal direction of the tooth data. By performing parallel movement in the buccal direction first and then performing parallel movement in the male direction, after positioning the tooth data close to the second arch line 200, it is possible to perform parallel movement in the male direction. This process saves system resources and has the advantage of obtaining a more stable treatment model.

As described above, in the moving step (S130), the target tooth to be moved among the dental data may be moved in at least one of the buccal direction and the mechanical direction determined from the dental data. In this case, since the mesial direction is formed to be perpendicular to the buccal direction, the mesial direction toward the first arch line of the target tooth may be the same as that toward the second arch line of the target tooth. More specifically, the magnetic direction of the target tooth is constant regardless of the shape of the arch line. Accordingly, since the target tooth does not rotate when the target tooth is moved in the buccal direction and the male direction, rapid calculation is possible, and a stable treatment model can be obtained.

In addition, in the conventionally disclosed technology in which rearrangement is performed to make a marker on a tooth and to be in contact with an arch line at which a corresponding marker point is generated, a fixed point of the tooth data has no choice but to move in contact with the arch line. In contrast, the data processing method according to the present invention does not require a separate marker for the tooth data, and according to the creation of the arch line, a suitable part of the contour of the tooth can be brought into contact with the arch line, which has the advantage of a higher degree of freedom. .

Meanwhile, at least some of the teeth included in the tooth data may have different buccal directions and different longitudinal directions. According to the change of the second arch line 200 , the buccal direction and the mesial direction may be formed differently in correspondence to the positions where each tooth of the tooth data is disposed, which means that the tooth data is more precisely fitted to the arch line. ) has the advantage that it can be

FIG. 12 is a diagram for explaining movement of tooth data in the buccal direction toward the second arch line, and FIG. 13 is a diagram illustrating movement of tooth data in the longitudinal direction toward the second arch line.

Referring to FIG. 12 , when the tooth data is moved in parallel in the buccal direction toward the second arch line, spacing between the respective teeth may occur. Although not shown in FIG. 12 , when the width of the second arch line is narrower than the width of the first arch line, if the tooth data is moved in parallel toward the second arch line in the buccal direction, overlap between the teeth may occur. Also, referring to FIG. 13 , when the tooth data is moved in the longitudinal direction toward the second arch line, deviation points Pa and Pb may occur without circumscribing the second arch line. That is, the tooth data may deviate from the second arch line according to the movement in the radial direction. Therefore, the tooth data moving step can perform two or more times of parallel movement in the buccal direction and parallel movement in the mechanical direction with respect to the tooth data. For example, the primary dental data movement in the buccal direction (S1331) may be performed and the primary dental data movement in the longitudinal direction (S1332) may be performed. Subsequently, the secondary tooth data movement in the buccal direction (S1333) may be performed, and the secondary dental data movement in the longitudinal direction (S1334) may be performed. However, this is an example, and one time parallel movement in the buccal direction and parallel movement in the male direction may be performed. In addition, three or more times of parallel movement in the buccal direction and parallel movement in the mechanical direction may be performed. By performing one or more movement of the tooth data in the buccal direction and the movement of the tooth data in the longitudinal direction, the respective teeth may be arranged neatly so as not to be spaced apart or overlap each other without departing from the second arch line.

Meanwhile, in the above-described moving step ( S130 ), from the center point 201 of the arch line formed between the center values of the second arch line 200 (eg, the 7th tooth and the 8th tooth) to each tooth data. may be sequentially performed according to the distance of . For example, it is assumed that teeth 1 to 14 exist as tooth data, and an arch line center point 201 is formed between teeth 7 and 8. At this time, since the distance from the central point 201 of the arch line to the central values (the 7th tooth and the 8th tooth) is the closest, the step S130 of processing data for the central value may be performed preferentially. Thereafter, the data processing step (S130) may be performed with respect to the tooth data disposed further outside the center value. As described above, by sequentially processing data according to the location of the tooth data ( S130 ), the tooth data may be rearranged to be collected at the center point 201 of the arch line. Therefore, it is possible to obtain a stable treatment model by rearranging the dental data toward the center of the oral cavity.

14 is a diagram after data processing is completed according to the data processing method according to the present invention. By using the data processing method according to the present invention, tooth data can be rearranged only by translation without rotation, so that the calculation speed is improved and a precise treatment model can be obtained.

Meanwhile, the rearrangement of the tooth data may be performed after the second archline is finally changed. More specifically, in the generating of the second archline, a curve finally determined by changing the center point or flow point of the first archline may be generated as the second archline. In general, the user completes the second archline by changing the center point or pour point of the first archline several times. Realigning the teeth whenever the center point or pour point is changed wastes computational resources and may confuse the user. Accordingly, a separate icon is provided on the user interface (UI) and the above-described moving method is performed according to a user's input signal, so that the entire tooth can be rearranged by moving in parallel toward the second arch line.

Hereinafter, a data processing apparatus performing the data processing method according to the present invention will be described. In describing the data processing apparatus, content overlapping with the above will be briefly mentioned or omitted.

15 is a configuration schematic diagram of a data processing apparatus for performing a data processing method according to the present invention.

Referring to FIG. 15 , the data processing apparatus for performing the data processing method according to the present invention may include a data storage unit 700 , a control unit 800 , and a display unit 900 .

The data storage unit 700 stores objects on which the operation of the control unit 800 is performed, and includes the above-described arch line information (first arch line and second arch line), tooth data information (position, color, and location of tooth data). tooth center point, etc.). Meanwhile, newly generated data after the operation of the control unit 800 is performed may also be stored in the data storage unit 700 .

Meanwhile, the control unit 800 may load and process data stored in the data storage unit 700 . More specifically, the loading and processing of the data may be rearranging the dental data according to a second archline different from the pre-stored first archline.

Hereinafter, a detailed configuration of the control unit 800 will be described.

The controller 800 may include an archline generator 810 that generates a second archline different from the first archline. The second archline may be created substantially by adjusting at least one of an archline center point of the first archline or a pour point formed on either side of the archline center point. More specifically, the second archline may be generated by at least one of translation by the center point of the archline of the first archline or shape deformation by the pour point. In this case, the shape deformation may be a change in the width of the first arch line as the pour point moves in a plane, or a change in the smile line of the first arch line as the pour point moves in a normal direction of the plane. According to the generated second archline, the tooth data may be adjusted to match the second archline.

On the other hand, the parallel movement of the first arch line by the center point of the arch line or the shape deformation by the pour point may be performed multiple times in order to provide a treatment model suitable for the user. Accordingly, the archline generator 810 may generate a curve finally generated by the parallel movement of the first archline by the center point of the archline or the shape transformation by the pour point as the second archline. Dental data to be described later may be rearranged by the generated second archline.

Meanwhile, in order to rearrange the tooth data in the generated second arch line, the controller 800 is a virtual figure generating at least one virtual line connecting the target tooth to be moved and the second arch line among the tooth data. A generator 820 may be included. Here, the virtual figure may mean a figure that is not actually displayed in the form of a model on the tooth data. More specifically, the virtual figure may be a virtual line connecting the target tooth and the second arch line, or a virtual circle used as a reference to generate the virtual line.

In order to generate a virtual line, the virtual figure generating unit 820 is a virtual circle having a circumference including the center points by using the center points of the target value to be moved and at least one adjacent tooth adjacent to the target value. to acquire Preferably, there may be at least two adjacent teeth. The virtual shape generating unit 820 may generate a central virtual line formed in the buckal direction by connecting the center of the circle and the center of the target tooth. Also, the virtual figure generating unit 820 may additionally generate at least one virtual line in the buccal direction parallel to the central virtual line. There may be at least two generated virtual lines including the central virtual line and the virtual line in the buccal direction parallel to the central virtual line. The process of acquiring the virtual circle and the process of generating the virtual line are the same as described above in the data processing method according to the present invention.

Meanwhile, the controller 800 may include a distance calculator 830 that determines the shortest distance between the target value and the second arch line by at least one virtual line. In more detail, the distance calculating unit 830 may determine a virtual line having the shortest distance from the central virtual line and at least one buccal direction virtual line parallel to the central virtual line to the contour of the target tooth and the second arch line. . That is, from the plurality of imaginary lines, an imaginary line having the shortest interval among distances between points of the second arch line through which each imaginary line passes and points of the tooth contour is determined as the imaginary line for tooth movement.

Also, the control unit 800 may include a data adjusting unit 840 for moving the target value toward the second arch line. The data adjusting unit 840 moves the target value in parallel in the buccal direction along the virtual line determined by the distance calculating unit 830 . Accordingly, the target tooth is rearranged so as to be in contact with the second arch line, and the user may obtain a customized treatment model.

Meanwhile, the data adjusting unit 840 may cause the target value to move in parallel in the male direction orthogonal to the Buccal direction. By moving the target tooth moved only in the buccal direction in parallel in the male direction, the tooth spacing may be formed to be adjacent along the arch line without being spaced apart. The data adjusting unit 840 may sequentially perform the parallel movement in the buccal direction and the parallel movement in the mechanical direction, and through such parallel movement, the teeth included in the tooth data may be precisely rearranged without rotation. The contents described in the data processing apparatus according to the present invention, such as movement of the target tooth, are the same as described above in the data processing method according to the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

S110: Creating a first arch line S120: Creating a second arch line
S130: moving step S131: virtual line creation step
S132: Shortest distance determination step S133: Tooth data movement step
100: first arch line 101: arch line center point
102: middle line 103, 104: pour point
200: second arch line 201: arch line center point
202: middle line 203, 204: pour point
301: tooth 1 302: tooth 2
303: tooth 3 307: tooth 7
308: 8 tooth 400: random tooth
410: contour 410C: center point
420: boundary box L1, L2, L3, L4, L5, L6, L7: imaginary line
C, C': center of circle P1: point of arch line
P2: contour point of target tooth Pa, Pb: departure point
700: data storage unit 800: control unit
810: arch line generating unit 820: virtual shape generating unit
830: distance calculating unit 840: data adjusting unit
900: display unit

Claims (27)

generating a first archline based on the tooth data;
generating, from the first archline, a second archline different from the first archline; and
and moving the target tooth to be moved among the tooth data toward the second arch line according to a user's input signal. According to claim 1,
The first arch line is a data processing method, characterized in that the spline curve in contact with the contours of the plurality of teeth constituting the tooth data. According to claim 1,
The data processing method according to claim 1, wherein the first arch line includes at least one of an arch line center point formed between center values and at least two flow points formed on both sides of the arch line center point. 4. The method of claim 3,
The data processing method according to claim 1, wherein the second archline is generated by at least one of parallel movement of the first archline by the center point of the archline and shape deformation by the pour point. 5. The method of claim 4,
The shape deformation is at least one of a change in the width of the first arch line according to the plane movement of the pour point and a change in the smile line of the first arch line according to the normal direction movement of the plane of the pour point. processing method. According to claim 1,
The moving step is
A data processing method characterized in that the target tooth to be moved among the tooth data is moved in at least one of a buccal direction and a mesial direction determined from the tooth data. 7. The method of claim 6,
The direction of the bucket toward the first arch line is the same as the direction of the bucket toward the second arch line, or
The data processing method according to claim 1 , wherein the radial direction toward the first arch line is the same as that toward the second arch line. According to claim 1,
The moving may include: generating at least one virtual line passing through a target tooth to be moved among the tooth data and the second arch line;
determining a shortest distance between the target tooth and the second arch line by the at least one virtual line; and
and a tooth data moving step of moving the target tooth in the direction toward the second arch line. 9. The method of claim 8,
The step of generating the virtual line comprises:
At least one parallel to the central imaginary line, including a central imaginary line connecting the center of the circle and the center point of the target tooth, and generating a virtual circle using the target tooth and at least one adjacent tooth adjacent to the target tooth A data processing method, characterized in that generating a buccal-direction virtual line of 10. The method of claim 9,
The adjacent values are,
A data processing method comprising: a first adjacent tooth formed on one side based on the target value; and a second adjacent tooth formed on the other side based on the target value. 9. The method of claim 8,
The step of generating the virtual line comprises:
An imaginary circle is created using the target tooth, a major adjacent tooth adjacent to the target tooth, and a secondary adjacent tooth adjacent to the major adjacent tooth and spaced apart from the target tooth, and connecting the center of the circle and the center point of the target tooth Data processing method, characterized in that generating at least one buccal direction imaginary line parallel to the central imaginary line, including the central imaginary line. 9. The method of claim 8,
The step of generating the virtual line comprises:
A virtual circle is generated using the target tooth, an adjacent tooth adjacent to the target tooth, and a virtual adjacent tooth adjacent to the target tooth and formed symmetrically with the adjacent tooth based on the target value, and the center of the circle and the target tooth A data processing method comprising generating at least one imaginary line in the buccal direction parallel to the central imaginary line including a central imaginary line connecting the central points. 13. The method according to any one of claims 9 to 12,
The step of determining the shortest distance is
The data processing method of claim 1, wherein the virtual line having the shortest distance connecting the contour of the target tooth and the second arch line is determined from among the generated virtual lines. 14. The method of claim 13,
The tooth data movement step is a data processing method, characterized in that parallel movement in the direction of the buccal along the virtual line on which the target value is determined. 15. The method of claim 14,
In the step of moving the tooth data, the target tooth is moved in parallel in the mechanical direction orthogonal to the buccal direction,
The data processing method, characterized in that the parallel movement in the buccal direction is sequentially performed with the parallel movement in the male direction. 16. The method according to any one of claims 14 to 15,
The moving step is performed sequentially according to the distance from the center point of the arch line formed between the center values of the second arch line to each tooth data. 16. The method of claim 15,
The data processing method, characterized in that at least some of the teeth included in the tooth data have different buccal and mechanical directions. a data storage unit for storing archline data and tooth data;
a control unit for loading and processing data stored in the data storage unit; and
and a display unit for displaying the processing process or processing result of the control unit;
The data processing apparatus according to claim 1, wherein the processing rearranges the tooth data according to a second archline different from the pre-stored first archline. 19. The method of claim 18,
The control unit is
an arch line generator generating the second arch line;
a virtual shape generating unit for generating at least one virtual line connecting a target tooth to be moved among the tooth data and the second arch line in order to rearrange the tooth data on the second arch line;
a distance calculator configured to determine a shortest distance between the target value and the second arch line by the at least one virtual line; and
and a data adjusting unit for moving the target value toward the second arch line. 20. The method of claim 19,
The virtual figure generating unit generates a virtual circle using the target value and at least one adjacent tooth adjacent to the target value, and includes a central virtual line connecting the center of the circle and the center point of the target value to the center A data processing apparatus, characterized in that generating at least one imaginary line in a buccal direction parallel to the imaginary line. 21. The method of claim 20,
The distance calculator,
and determining an imaginary line having the shortest distance from the central imaginary line and at least one buccal-direction imaginary line parallel to the central imaginary line to the contour of the target tooth and the second arch line. 22. The method of claim 21,
The data processing apparatus according to claim 1, wherein the data adjusting unit moves in parallel in the buccal direction along the virtual line on which the target value is determined. 23. The method of claim 22,
The data adjusting unit, the target value moves in parallel in the mesial direction orthogonal to the term “‡”,
The data difference device, characterized in that the parallel movement in the buccal direction is sequentially performed with the parallel movement in the male direction. 23. The method of claim 22,
The data adjustment unit,
The target tooth to be moved among the tooth data is moved in the buccal direction toward the second arch line, and the buccal direction of the target tooth toward the first arch line is the buccal direction of the target tooth toward the second arch line and Data processing device characterized in that the same. 25. The method of claim 24,
The data adjustment unit,
Data characterized in that the target tooth is moved in a radial direction orthogonal to the buccal direction, and the male direction of the target tooth toward the first arch line is the same as that of the target tooth toward the second arch line. processing unit. 20. The method of claim 19,
The first arch line includes at least one of an arch line center point formed between center values and at least two flow points formed on both sides of the arch line center point,
The second arch line is generated by at least one of parallel movement of the first arch line by the center point of the arch line or shape deformation by the pour point,
The data processing apparatus according to claim 1, wherein the arch line generator generates a curve finally generated by parallel movement of the center point of the arch line or shape deformation by the pour point as a second arch line. 27. The method of claim 26,
The shape deformation is at least one of a change in the width of the first arch line according to the plane movement of the pour point and a change in the smile line of the first arch line according to the normal direction movement of the plane of the pour point. processing unit.

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