WO2012087043A2 - Virtual surgical apparatus for dental treatment and method for manufacturing a wafer using same - Google Patents

Abstract

The present invention relates to a virtual surgical apparatus for dental treatment, a method for manufacturing a wafer using same and to a program storage device, in which a tracing line and control points are formed through the designation of a landmark for virtual overlapped data, and a virtual surgery for a skeleton for virtual surgery is conducted simultaneously with a paper surgery performed based on a user's adjustment to a control point so as to manufacture a wafer. The virtual surgery apparatus comprises: a tracing line unit which forms at least one skeleton for virtual surgery through the formation of tracing line based on the designation of a landmark for virtual overlapped data in which a two-dimensional tooth image and a three-dimensional tooth model are overlapped, and which generates a plurality of control points for controlling each skeleton for virtual surgery in accordance with a predetermined manner; and a virtual surgery unit which performs a virtual surgery for the skeleton for a virtual surgery simultaneously with the paper surgery performed through the adjustment of control points, by referring to the result of the paper surgery.

Description

Virtual surgery apparatus for dental treatment and wafer manufacturing method using the same

The present invention relates to a virtual surgical apparatus for dental treatment and a wafer manufacturing method using the same, and more particularly, to form a tracing line and a control point according to the designation of the landmark in the virtual overlapping data, A virtual surgical apparatus for manufacturing a wafer and a wafer manufacturing method using the same, and a virtual surgical method using the virtual surgical apparatus for manufacturing a wafer by performing a virtual surgery on a virtual surgical skeleton at the same time as the paper surgery according to the adjustment A program storage device for tangibly embodying a program of instructions readable by a computer and executable by the computer for executing the present invention.

In general, the teeth (齒 列) is made of a structure that can chew food while the upper and lower teeth are occluded according to the jaw joint movement. At this time, the teeth are uneven, so the upper and lower teeth occlusion is referred to as 'negative occlusion'.

Such malocclusion includes malocclusion due to dental denial, and skeletal malocclusion due to abnormal growth of the upper jaw (upper jaw) and lower jaw (low jaw).

However, in the case of skeletal malocclusion, dental correction is performed. In this case, the term "correction surgery" is a procedure for correcting skeletal abnormalities of teeth and face parts to create a functional and esthetic face. The orthodontic treatment is applied to the patient by making the orthodontic device between the upper model and the lower model modeled after the upper and lower teeth of the patient. At this time, the orthodontic device is manufactured according to the tooth arrangement in the state of the upper model and lower model imitating teeth.

However, if the orthodontic treatment is not successful, perform the 'correctional surgery'. Orthodontic surgery is difficult to fix some incision jaw bone (upper jaw or lower jaw bone) in the desired position, using the patient's dental gypsum model to predict and cut the operation after surgery to achieve the target position.

In conventional orthodontic surgery, a composite (i.e. resin) is filled between the upper and lower teeth spaces to form a mold ("wafer") having a tooth hoof like a mouthpiece. The wafer thus prepared is fixed to the teeth of the jaws that are not incision during surgery, and the teeth of the incision jawbone are aligned to secure the desired position. At this time, the wafer holding the position of the maxilla is called an 'intermediate wafer' and the wafer holding the position of the mandible is called a 'final wafer'.

This wafer is used as a model for remembering the position of the teeth during orthodontic surgery, and plays an important role in fixing the teeth of the jaws that are not incision during surgery and matching the teeth of the injured jawbone to find the desired position.

Conventionally, since the wafer is manufactured by hand using a plaster model to manufacture the wafer necessary for the corrective surgery, the manufacturing process is complicated and produced by the subjective judgment of a doctor, so there may be many errors in each process.

In addition, since the face beam, articulator and plaster model must be used, the manufacturing process is complicated and the manufacturing cost is high.

Therefore, there is a need for a wafer fabrication method that can provide high precision without relying on manual labor.

Therefore, an object of the present invention has been proposed to improve the problems of the prior art as described above, virtual dental treatment that can provide a high precision without resorting to manual work using a conventional face beam, articulator and plaster model, etc. It is to provide a surgical device and a method of manufacturing a wafer using the same.

Another object of the present invention is to provide a program storage device for tangibly embodying a program of instructions readable by a computer and executable by the computer to execute a virtual surgical method using the virtual surgical device for dental treatment. will be.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned above can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In order to achieve the above object, the present invention, as a virtual surgical device, at least one virtual surgical skeleton through a tracing line operation according to the landmark designation for the virtual overlap data superimposed two-dimensional teeth image and three-dimensional teeth model A tracing line unit for forming a plurality and generating a plurality of control points for controlling each of the virtual surgical skeletons according to a preset manner; And a virtual surgical unit for simultaneously performing virtual surgery on the virtual surgical skeleton as a result of paper surgery as the control point is adjusted.

The tracing line unit may designate a common landmark on the lateral virtual surgical skeleton and the front virtual surgical skeleton through a tracing line operation, and common land at the time of paper survival for the lateral virtual surgical skeleton and the front virtual surgical skeleton. In accordance with the change in the position of the mark, and further comprises a synchronization processing unit for maintaining and synchronizing the virtual surgical results according to the paper surgery to each other.

The present invention generates generated data for the intermediate wafer according to the results of the maxillary virtual surgery by the virtual surgery, and final wafer according to the results of the mandibular virtual surgery by the virtual surgery based on the maxillary virtual surgery It further includes a wafer data generation unit for generating the dragon generation data.

The present invention further includes a wafer fabrication unit for generating a physically refined intermediate wafer using the generated data for the intermediate wafer, and for generating a final wafer that is physically trimmed using the generated data for the final wafer. do.

The tracing line unit may display the plurality of control points after determining a location according to a preset method for each control point based on the landmark.

The plurality of control points is characterized in that the virtual surgical skeleton moving in accordance with the user operation is defined.

When the paper surgery by the user is performed, the virtual surgery unit distinguishes and displays in real time the tracing lines before and after the trial.

The virtual surgery unit is characterized in that the paper surgery for the virtual surgical skeleton as a value for the virtual surgery is input to a predetermined menu window.

The virtual surgical unit is characterized by superimposing and displaying the three-dimensional teeth model before and after the virtual surgery on the basis of the point of the same position on the two-dimensional teeth image of the virtual superimposition data before and after the virtual surgery.

The virtual overlapping data is generated by a virtual overlapping device, and the virtual overlapping device includes: a data loading unit for overlaying and loading the 3D tooth model according to a photographing direction of the 2D tooth image; A numerical measuring unit for measuring an inclination angle and a length by using reference points respectively selected by the user on the two-dimensional tooth image and the three-dimensional tooth model; And a virtual superimposition unit for adjusting the inclination angle of the three-dimensional teeth model according to the inclination angle of the two-dimensional teeth image and adjusting and overlapping the size and position of the two-dimensional teeth image according to the length of the three-dimensional radiographic image. It includes;

The virtual surgical skeleton is characterized in that any one of the maxilla, mandible, face contour and three-dimensional teeth model.

The landmark is characterized in that a number of feature points necessary for measurement, diagnosis and treatment planning for the two-dimensional teeth image for paper surgery.

On the other hand, the present invention provides a wafer manufacturing method, the overlapping step of forming a virtual overlapping data overlapping the two-dimensional teeth image and the three-dimensional teeth model; Forming at least one virtual surgical skeleton through a tracing line operation according to a landmark designation for the virtual overlapping data; Generating a plurality of control points for controlling each of the virtual surgical skeletons according to a preset method; An intermediate data generation step of generating generated data for an intermediate wafer as the virtual surgery is performed by paper surgery on the maxillary side of the virtual surgical skeleton; And a final data generation step of generating generated data for the final wafer as the virtual surgery is performed by the paper surgery on the lowermost side of the virtual surgical skeleton based on the virtual surgical result of the uppermost side of the virtual surgical skeleton. It includes;

The intermediate data generating step may include fabricating a physically polished intermediate wafer using the generated data for the intermediate wafer.

The final data generation step may include fabricating a final wafer that is physically trimmed using the final data generated for the final wafer.

The overlapping step may include a loading step of loading the three-dimensional teeth model according to the photographing direction of the two-dimensional teeth image; And adjusting and inclining angles, sizes, and positions of the two-dimensional teeth image and the three-dimensional teeth model by using reference points selected by the user on the two-dimensional teeth image and the three-dimensional teeth model, respectively. Superimposing step.

On the other hand, the present invention is a program storage device for tangibly embodying a program of instructions readable by a computer and executable by the computer to execute a virtual surgical method for dental treatment, the method is a two-dimensional dental image An overlapping step of forming virtual overlapping data in which the 3D tooth model is overlapped with each other; Forming at least one virtual surgical skeleton through a tracing line operation according to a landmark designation for the virtual overlapping data; Generating a plurality of control points for controlling each of the virtual surgical skeletons according to a preset method; And a process of simultaneously performing virtual surgery on the virtual surgical skeleton as a result of paper surgery as the control point is adjusted.

In addition, the present invention is a program storage device for tangibly embodying a program of instructions readable by a computer and executable by a computer to execute a wafer fabrication method, wherein the method comprises a two-dimensional tooth image and a three-dimensional image. An overlapping step of forming the virtual overlapping data in which the tooth model is overlapped; Forming at least one virtual surgical skeleton through a tracing line operation according to a landmark designation for the virtual overlapping data; Generating a plurality of control points for controlling each of the virtual surgical skeletons according to a preset method; An intermediate data generation step of generating generated data for an intermediate wafer as the virtual surgery is performed by paper surgery on the maxillary side of the virtual surgical skeleton; And a final data generation step of generating generated data for the final wafer as the virtual surgery is performed by the paper surgery on the lowermost side of the virtual surgical skeleton based on the virtual surgical result of the uppermost side of the virtual surgical skeleton. It is provided with a program storage device comprising a.

As described above, the present invention, when the surgical plan is established on the two-dimensional teeth image, the three-dimensional teeth model is also moved according to the surgical plan to determine the environment before and after the operation through the three-dimensional teeth model environment It has the effect of providing to the user.

In addition, according to the present invention, if the paper surgery on the tracing line generated along the two-dimensional teeth image is performed, the virtual surgery results for the three-dimensional teeth model can be executed simultaneously to check the results in real time.

In addition, the present invention has the effect of synchronizing the side virtual surgical skeleton and the front virtual surgical skeleton to keep the same when the virtual surgery on the front and the virtual surgery on the side of the patient's head on the same have.

In addition, the present invention has the effect of displaying the three-dimensional teeth model before the virtual surgery and the three-dimensional teeth model after the virtual surgery overlap each other.

1 is a block diagram of a virtual superposition device for dental treatment according to the present invention,

Figure 2 is a view showing a side image of the two-dimensional teeth image,

Figure 3 is a view showing a front image of the two-dimensional teeth image,

4 is a view showing the X-Y plane of the three-dimensional teeth model,

5 is a view showing the X-Z plane of the three-dimensional teeth model,

6 is a view showing the Y-Z plane of the three-dimensional teeth model,

7 is a view showing the loading state of the side image of the two-dimensional teeth image and the X-Y plane of the three-dimensional teeth model,

8 is a view showing a loading state of the front image of the two-dimensional teeth image and the Y-Z plane of the three-dimensional teeth model,

9 is a view showing a reference point selection in the side image of the two-dimensional teeth image,

10 is a view showing a reference point selection in the X-Y plane of the three-dimensional teeth model,

11 and 12 are views for a virtual overlap operation on the X-Y plane of the side image and the three-dimensional tooth model of the two-dimensional teeth image,

13 and 14 are diagrams for a virtual overlap operation on the Y-Z plane of the front image of the two-dimensional teeth image and the three-dimensional teeth model,

15 and 16 are views for the virtual overlap operation using the Y-axis rotation with respect to the Y-Z plane of the three-dimensional teeth model,

17 is a block diagram of a virtual surgical device of the present invention,

18 is a view showing a tracing line operation result;

19 and 20 are views for the virtual surgery by paper surgery,

21 is a diagram showing paper surgery by numerical input;

22 is a view of virtual overlapping data before and after virtual surgery,

FIG. 23 is a diagram showing a zero shift of virtual superimposition data before and after virtual surgery; FIG.

24 is a view showing the results of superimposition of the three-dimensional teeth model before and after virtual surgery,

25 illustrates the synchronization of virtual surgery for the side and front,

26 is a flow chart for a virtual surgical method for dental treatment according to the present invention,

27 is a flowchart illustrating a wafer manufacturing method according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a virtual superposition device for dental treatment according to the present invention.

The general mounting operation is called face bow transfer, which involves creating a plaster model that mimics the patient's teeth prior to surgery and then cuts the plaster model and places it on the articulator as needed. do. However, this overlapping work must be performed again in the above-described series of work if the fabrication work is performed incorrectly when performing the base work on the plaster model.

In contrast, the dental superimposition device (hereinafter, referred to as "virtual superimposition device", 100) according to the embodiment of the present invention shown in FIG. It provides a user interface environment that can perform a series of virtual overlapping work by reproducing the overlapping work for oral posture in a virtual space.

At this time, the virtual superimposition device 100 obtains a two-dimensional teeth image of the head of the patient and a three-dimensional teeth model of the upper and lower teeth of the patient, respectively, and then two-dimensional three-dimensional tooth model in the virtual space Overlaid on the tooth image to reproduce the superimposed state in the actual situation. That is, the virtual superposition apparatus 100 positions the two-dimensional teeth image on the lower layer, the three-dimensional teeth model on the upper layer, and overlays the corresponding ones.

Here, the two-dimensional teeth image means a radiographic image of the head of the patient taken through a dental X-ray or a computed tomography (CT) according to the cephalometrics (Fig. 2 and FIG. 3). At this time, the two-dimensional tooth image is a lateral cephalogram taken from the side of the patient's head in accordance with the direction of the imaging (lateral cephalogram, hereinafter referred to as "side image", 200a), the head of the head radiograph taken from the forward direction of the patient ( posteroanterior cephalogram, hereinafter referred to as "front image" (200b), and submental cephalogram (viewed as "top image") taken from the top of the patient's head.

The two-dimensional teeth image is transmitted to the subject by forming the X-rays through the object to form a film appears as the distance between the film and the subject is enlarged. That is, the two-dimensional teeth image may have some error compared to the actual size of the patient's head.

However, the two-dimensional tooth image can grasp the actual tooth structure of the patient by reflecting the actual facial skeletal structure of the patient's head as it is. In other words, in the present invention, instead of the process of checking the relative position of the patient's teeth and the skull through the face beam and the bite fork to check the actual patient's tooth structure, the teeth required for the virtual superposition through the two-dimensional tooth image Check the canting of. Here, the inclination angle of the tooth can be confirmed through the inclination of the occlusal surface, which is the tooth surface in contact with each other between the upper teeth and the lower teeth in the two-dimensional teeth image.

In addition, the 3D tooth model refers to 3D tooth shape data that implements a 3D tooth shape having a volume and texture similar to that of a real patient in a virtual space through rendering (see FIGS. 4 to 6). . In this case, the 3D dental model may acquire 3D tooth shape data through a 3D scanner of a plaster model that shapes the teeth of a patient, or may obtain 3D tooth shape data through a conventional dental computed tomography. Since the method of obtaining the 3D tooth model is easily understood by those skilled in the art, a detailed description thereof will be omitted.

The three-dimensional tooth model is modeling data of actual size corresponding to one-to-one (1: 1) of the patient's actual tooth, and the actual tooth of the patient is implemented in the virtual space as it is. However, the three-dimensional tooth model is the same as the actual size of the patient's actual tooth only does not reflect the angle of inclination of the tooth.

In this case, a coordinate system for quantification of measurement in a three-dimensional space is set in the three-dimensional dental model. That is, the XY plane 300a is anatomically a sagittal plane, determined by the midpalatal suture 301 and the junction of the incisive papilla and midpalatal suture 302 (FIG. 4). Reference). Here, the medial palatal suture 301 is an anatomical structure showing a central line that divides the left and right symmetry of the palate of the maxilla, and the PMRJ 302 is an incisive papilla 303 and the medial palatal suture 301. ) Is a protruding gum tissue on the left and right symmetric center line of the anterior palate. In addition, the X-Z plane 300b is anatomically determined as a frankfort horizontal plane, which is determined to be a plane perpendicular to the X-Y plane 300a including the PMRJ 302 (see FIG. 5). In addition, the Y-Z plane 300c is anatomically determined as a coronal plane, which is a plane perpendicular to the X-Y plane 300a and the X-Z plane 300b including the PMRJ 302 (see FIG. 6).

Specifically, the virtual superposition device 100 overlaps the two-dimensional teeth image and the three-dimensional teeth model as follows.

That is, the virtual superimposition apparatus 100 according to the occlusal inclination angle confirmed through the side image 200a of the two-dimensional teeth image, the inclination angle of the X axis in the XY plane 300a (ie, the sagittal plane) of the three-dimensional teeth model. After adjusting, the size and position of the side image 200a of the 2D dental image are adjusted to the size and position of the XY plane 300a of the 3D dental model. Similarly, the virtual superimposition apparatus 100 according to the occlusal inclination angle confirmed through the front image 200b of the two-dimensional teeth image, the inclination angle of the Z axis in the YZ plane 300c (ie, the coronal plane) of the three-dimensional teeth model. After adjusting, the size and position of the front image 200b of the 2D dental image are adjusted to the size and position of the YZ plane 300c of the 3D dental model. However, the virtual superimposition apparatus 100 corresponds to the superimposed image of the two-dimensional teeth image on the XZ plane 300b (that is, the Frankfort surface) of the three-dimensional teeth model and overlaps the above-described process. Instead of proceeding separately, the process of reflecting the degree of rotation is made by using the Y axis (that is, the midpoint of the two front teeth) as the rotation axis in the XY plane 300a of the 3D tooth model.

As shown in FIG. 1, the virtual overlapping apparatus 100 includes a data loading unit 110, a numerical measuring unit 120, a virtual overlapping unit 130, a user interface unit 140, and a storage unit 150. do.

The data loading unit 110 overlays the two-dimensional tooth image on the lower layer and the three-dimensional tooth model on the upper layer and displays the same through the user interface 140 (see FIGS. 7 and 8).

Specifically, the data loading unit 110 loads a two-dimensional dental image (ie, the side image 200a or the front image 200b) according to the user's photographing direction selection. In addition, the data loading unit 110 loads a three-dimensional teeth model (that is, XY plane 300a or YZ plane 300c), it is preferable to load corresponding to the shooting direction of the two-dimensional teeth image selected by the user. Do.

That is, the data loading unit 110 displays and loads the XY plane 300a of the 3D dental model when the side image 200a of the 2D dental image is loaded, and the front image 200b of the 2D dental image. If is loaded, the YZ plane (300c) of the three-dimensional teeth model is displayed by loading.

The numerical measurer 120 measures the inclination angle and the length between any two reference points with respect to the two-dimensional tooth image or the three-dimensional tooth model loaded by the data loading unit 110. That is, when two reference points are designated by the user in the 2D dental image or the 3D dental model, the numerical measurement unit 120 measures the inclination angle between the two reference points and the line segment length connecting the two reference points. . Here, the reference point is preferably selected for each of teeth 1 and 7 of the occlusal surface of the patient, but any two points may be selected when the angle of inclination of the patient's teeth can be reflected. However, for convenience of description, the present invention will be described for selecting a reference point in the occlusal surface (see FIGS. 9 and 10). 9 illustrates a case in which the user selects the first reference point 211 and the second reference point 212 as two reference points in the two-dimensional tooth image. In FIG. 10, the third reference point is referred to as two reference points in the three-dimensional tooth model. The case where the user selects the point 311 and the fourth reference point 312 is shown.

The virtual overlapping unit 130 overlaps the two-dimensional tooth image and the three-dimensional tooth model with respect to each axis constituting the three-dimensional space. Preferably, the virtual overlap unit 130 overlaps with each other based on the occlusal surface of the patient in the two-dimensional teeth image and the three-dimensional teeth model.

First, the virtual superimposition unit 130 overlays the XY plane 300a (sagittal plane) of the three-dimensional teeth model on the side image 200a of the two-dimensional teeth image by using the measurement result by the numerical measuring unit 120. To overlap. That is, the virtual superimposition unit 130 first adjusts the occlusal inclination angle in the three-dimensional teeth model based on the two-dimensional teeth image, and then adjusts the size and position of the occlusal surface in the two-dimensional teeth image based on the three-dimensional teeth model. Overlap.

Specifically, the virtual overlapping unit 130 overlaps the side image 200a of the 2D dental image and the X-Y plane 300a of the 3D dental model through a series of processes as follows.

The virtual superimposition unit 130 sets the occlusal inclination angle with respect to the XY plane 300a of the three-dimensional teeth model according to the occlusal inclination angle with respect to the side image 200a of the two-dimensional teeth image, thereby realizing the occlusal surface of the patient. The angle of inclination is reflected in the three-dimensional tooth model (see FIG. 11). This is to match the occlusal inclination angle with respect to the X-Y plane 300a of the three-dimensional teeth model to the occlusal inclination angle with respect to the side image 200a of the two-dimensional teeth image. Here, the occlusal inclination angle represents the degree of inclination with respect to the X axis.

To this end, the numerical measurement unit 120 measures the occlusal inclination angle using a line segment connecting two reference points specified by the user in the side image 200a of the two-dimensional tooth image. In addition, the numerical measurement unit 120 measures the occlusal inclination angle using a line segment connecting two reference points specified by the user in the X-Y plane 300a of the three-dimensional teeth model. In this case, the user designates the corresponding reference points at the same positions on the occlusal surface of the lateral plane 200a of the two-dimensional dental image and the XY plane 300a of the three-dimensional dental model. Select tooth 7 to determine the segment. The virtual superimposition unit 130 changes the occlusal inclination angle with respect to the X-Y plane 300a of the three-dimensional teeth model to the occlusal inclination angle with respect to the side image 200a of the two-dimensional teeth image. That is, the virtual superimposition unit 130 rotates the occlusal inclination angle with respect to the X-Y plane 300a of the three-dimensional teeth model according to the occlusal inclination angle with respect to the side image 200a of the two-dimensional teeth image. In other words, the virtual overlap 130 sets the occlusal inclination angle with respect to the X-Y plane 300a of the three-dimensional teeth model as the occlusal inclination angle of the actual patient.

Next, the virtual overlap unit 130 overlaps the size and position of the side image 200a of the 2D dental image according to the size and position of the XY plane 300a of the 3D tooth model (see FIG. 12). . This is to match the size and position of the side image 200a of the 2D dental image to the length and position of the X-Y plane 300a of the 3D dental model.

To this end, the numerical measurement unit 120 uses the line segment connecting two reference points specified by the user in the XY plane 300a of the three-dimensional teeth model to form an occlusal surface in the XY plane 300a of the three-dimensional teeth model. Measure the size and position through. In addition, the numerical measurement unit 120 uses a line segment connecting two reference points specified by the user in the side image 200a of the 2D dental image through the occlusal surface in the side image 200a of the 2D dental image. Measure the size and position. At this time, the user assigns the reference points to the same positions on the occlusal surface as described above. The virtual overlapping unit 130 overlaps the size and position of the 3D dental model with respect to the X-Y plane 300a according to the size and position of the side image 200a of the 2D dental image. At this time, the virtual superimposition unit 130 adjusts the length of the line segment in the two-dimensional teeth image according to the length of the line segment in the three-dimensional teeth model, to match the size of the XY plane 300a of the three-dimensional teeth model Adjust the size for the side image 200a. In this case, the occlusal surface of the 2D dental image and the occlusal surface of the 3D dental model do not coincide with each other but have the same inclination angle and size. Thereafter, the virtual superimposition unit 130 checks each center point of the line segment in the 2D tooth image and the line segment in the 3D tooth model, and the center of the line segment in the 2D tooth image as the line center of the 3D tooth model. Adjust the position. Thus, the occlusal surface of the two-dimensional dental image is located at the same point coinciding with the occlusal surface of the three-dimensional dental model.

Meanwhile, the virtual overlapping unit 130 performs the same series of overlapping operations on the YZ plane 300c (the coronal plane) of the 3D dental model with respect to the front image 200b of the 2D dental image as described above. (See FIGS. 13 and 14). At this time, the occlusal surface inclination angle represents the degree of inclination of the Z axis. A detailed description thereof will be omitted since it can be easily understood through the overlapping operation on the X-Y plane 300a (sagittal plane) of the 3D tooth model with respect to the side image 200a of the 2D tooth image.

However, the virtual overlapping unit 130 does not perform a series of overlapping operations as described above when the XZ plane 300b (Frankport surface) of the 3D dental model is overlapped with the top image of the 2D dental image. Instead, the Y-axis is rotated by the rotation axis with respect to the YZ plane 300c of the three-dimensional teeth model to adjust.

To this end, the virtual overlapping unit 130 sets the Y axis as the rotation axis in the Y-Z plane 300c of the 3D tooth model by the user. At this time, the user selects the center of the two foremost teeth 321 in the YZ plane 300c of the three-dimensional tooth model as the Y axis (see FIG. 15), and the Y axis is approximately the median palate suture 301 and PMRJ ( Perpendicular to the intersection of 302). Subsequently, when the position 323 where the outermost point 322 is to be moved by the user is selected by the user in the YZ plane 300c of the three-dimensional teeth model, the virtual overlap 130 may include the YZ plane ( 300c) rotates the Y axis to a position selected by the user with the rotation axis (see FIG. 16).

Meanwhile, the virtual superimposition unit 130 performs virtual superimposition on the two-dimensional tooth image and the three-dimensional tooth model, and then, as a part of the virtual treatment diagnosis, paper surgery, wafer fabrication, and orthodontics as a subsequent process. Provide the necessary user interface.

The user interface unit 140 provides a user with access to the virtual overlapping apparatus 100 for performing a series of virtual overlapping tasks. That is, the user interface unit 140 connects with various input devices (for example, a keyboard, a mouse, a touch pad, a pen mouse, etc.) to provide an input function for manipulating the virtual overlapping device 100, and the virtual overlapping device. It is connected to various output devices (e.g., monitor, printer, etc.) to provide an output function for displaying the processing result of the 100. For example, when a user inputs a predetermined task for virtual superposition using a keyboard or a mouse, the user may confirm that the result is output through the monitor.

The storage unit 150 stores patient personal information for each patient, a two-dimensional tooth image of the patient, and a three-dimensional tooth model. Here, the patient personal information includes a patient name, social security number, medical history, medical treatment schedule information, and the like. In this case, the 2D dental image and the 3D dental model may be directly obtained from a corresponding external device (ie, an X-ray device, a 3D scanner, etc.) directly connected to the virtual superimposition device 100, or may be obtained externally and then through wired or wireless communication. May be provided.

17 is a block diagram of a virtual surgery apparatus according to an embodiment of the present invention. 18 is a diagram illustrating a tracing line operation result. 19 and 20 are diagrams for virtual surgery by paper surgery, FIG. 21 is a diagram for paper surgery by numerical input, FIG. 22 is a diagram for virtual overlapping data before and after virtual surgery, and FIG. 23 is virtual It is a figure which shows the zero shift of the virtual superimposition data before and after surgery, FIG. 24 is a figure which shows the superimposition result of the 3D tooth model before and after the virtual surgery, and FIG. 25 is a figure which shows the synchronization of the virtual surgery with respect to the side and front.

Virtual surgery apparatus according to an embodiment of the present invention (hereinafter referred to as "virtual surgery apparatus", 400), the superimposed data for the two-dimensional teeth image and the three-dimensional teeth model through the above-described virtual superimposition device 100 (hereinafter 12 and 14), and then perform paper surgery on tracing lines generated along the two-dimensional teeth image, the three-dimensional teeth model. Simultaneous execution of the virtual surgery results for the results can be confirmed in real time. Here, the virtual superimposition data is preferably generated by the virtual superimposition apparatus 100 shown in FIG. 1, but is not generated in a limited manner.

In particular, when the surgical plan is established on the two-dimensional teeth image of the virtual overlapping data formed through the virtual overlap function, the virtual surgical device 400 moves along with the three-dimensional tooth model according to the corresponding surgical plan to display the results before and after the three-dimensional teeth. It provides the user with an environment to check and analyze through the model. In other words, the virtual surgical apparatus 400 provides an environment in which the 3D surgical results can be predicted through the 2D surgical plan.

On the other hand, in general, the two-dimensional teeth image is shown on the paper and paper surgery is performed, and the virtual surgery of the actually mounted gypsum model is confirmed according to the paper surgery results. That is, in this case, even if the surgical plan is established by using the 2D tooth image, since the actual 3D tooth model is not used, mounting work of the 3D tooth model is additionally required.

In this case, although the paper line is not actually performed by showing the tracing line on the paper, the term 'paper surgery' is used as it is for convenience of description because the virtual surgery apparatus 400 performs a series of processes corresponding to the actual paper surgery in the virtual space. I will use it. This series of paper surgery and virtual surgery is called STO (Surigal Treatment Object). In this case, the paper surgery is mainly performed on the side of the head of the patient, and may be performed on the front of the head of the patient in surgery to balance the left and right of the patient, if necessary.

As shown in FIG. 17, the virtual surgery apparatus 400 includes a tracing line unit 410, a virtual surgery unit 420, a synchronization processor 421, and a wafer data generator 430. The production unit 431 may further include.

Hereinafter, the tracing line unit 410 will be described with reference to FIG. 18.

The tracing line unit 410 performs a tracing line operation based on a landmark designated by a user with respect to the two-dimensional tooth image of the virtual overlapping data. Here, the term 'landmark (M)' refers to a number of feature points necessary for measuring, diagnosing, and establishing a treatment plan for a two-dimensional dental image for paper surgery. In FIG. 18, the landmark M is represented by a cross point (+).

These landmarks (M) are known through conventional head radiometric analysis, anterior nasal spine (ANS), posterior nasal spine (PNS), A point (Subspinale), B point (Supramentale), N (Nasion), Or (Orbitale), Por (Portion) and the like.

In particular, the tracing line unit 410 provides a plurality of landmarks M to the user in a list format so that the plurality of landmarks M can be designated in a predetermined order without omission. In this case, the tracing line unit 410 may perform a tracing line operation according to the landmark M by identifying a position (coordinate) and a type (name) for each landmark M on the two-dimensional tooth image.

Hereinafter, a process of performing the tracing line operation according to the landmark M designated by the user in the tracing line unit 410 will be described in detail.

First, the tracing line portion 410 is along the skeleton of the actual patient shown on the two-dimensional teeth image, the contour of the patient, the maxilla (upper jawbone) and the patient, which is commonly considered in the planning of measurement / diagnosis / surgery of paper surgery The mandible (mandibular bone) forms a 'virtual surgical skeleton' with tracing lines TL1 to TL3.

In this case, at least one landmark M is disposed along the tracing line of the virtual surgical skeleton. Here, the three-dimensional tooth model is already formed before the tracing line operation, but will be described collectively as a virtual surgical skeleton with a facial contour, maxilla and mandible for convenience.

In detail, the tracing line unit 410 automatically forms a 'face contour tracing line TL1' using a designated landmark M along the facial contour of the 2D dental image. However, the tracing line unit 410 has a designated landmark (M) along the contour of the maxilla and mandible of the two-dimensional teeth image by being connected to each other by the user 'the maxillary tracing line (TL2)' and 'mandibular tracing line (TL3) Form '.

As a result, the tracing line unit 410 distinguishes the face region for performing the virtual surgery as the face contour tracing line TL1 is formed, and forms the maxillary tracing line TL2 to form the maxillary region for the virtual surgery. The mandibular tracing line (TL3) is formed to distinguish the mandible region for proceeding the virtual surgery. Each of these independent areas represents an area that can be independently controlled by a control point to be described later.

Next, when all of the landmarks M are designated by the user, the tracing line unit 410 connects at least two landmarks M to analyze the condition of the patient and refer to the STO process. (RL) '. For example, the reference line RL connected to the tip of the nose and the chin is a ricketts line for objectively indicating the degree of protruding mouth and further indicating the degree of reference for corrective surgery, and preferably, the upper lip is 1 About ㎜ inward, the lower lip is in contact with the aesthetic gland and the degree of protrusion is confirmed.

In addition, when all of the landmarks M are designated by the user, the tracing line unit 410 controls points for performing paper surgery on the virtual surgical skeleton using at least one landmark M. ).

In this case, the tracing line unit 410 determines and displays the location according to a preset method for each control point based on the landmark M designated by the user. That is, the tracing line unit 410 has previously set which landmark M coordinate information is used for positioning each control point ⓐ to ⓜ, and accordingly all landmarks M are selected by the user. If) is specified, the location of each control point, that is, coordinate information, is determined using the coordinate information of the landmark M.

In one example, the coordinates a ₁ , b _{1 of} the first landmark M1 and the coordinates a ₂ , b ₂ of the second landmark M2 to determine the coordinates (x, y) of the control point ⓐ. It will be described assuming a case using. In this case, the tracing line unit 410 is a method for determining the position of the control point ⓐ, the control point at a point away from the midpoint of the first landmark (M1) and the second landmark (M2) by h relative to the y coordinate. Preset to arrange Accordingly, when all the landmarks M are designated by the user, the tracing line unit 410 determines the coordinates (x, y) of the control point ⓐ as shown in Equation 1.

Equation 1

Meanwhile, the tracing line unit 410 synchronizes the control points (ⓐ to ⓜ) with respect to each of the virtual surgical skeletons, thereby synchronizing with the movement of the control points (ⓐ to ⓜ) by the user during virtual surgery. The surgical skeleton can also be moved at the same time. In this case, the virtual surgical skeleton may be represented as a unit region cut for virtual surgery, and each unit region is synchronized with one control point (ⓐ to ⓜ) for paper surgery for virtual surgery. For example, the maxilla is cut into the front and rear portions to form two unit regions, and the control points correspond to each unit region.

In addition, each control point (ⓐ to ⓜ) is defined a virtual surgical skeleton that moves in accordance with the user operation.

Specifically, Table 1 shows the virtual surgical skeleton defined at the control points (ⓐ to ⓜ). Here, the case where six control points (ie, ⓐ to ⓕ) are arranged on the upper side and seven control points (ie, ⓖ to ⓜ) is arranged on the lower side is described, but the present invention is not limited thereto. The number, location and movement of the virtual surgical skeleton can be defined differently.

Table 1

	Control point	Definition of movement of virtual surgical skeleton
Maxillary side	Ⓐ	Maxillary bone
	Ⓑ	Maxilla 1st incision
	Ⓒ	Maxilla 2nd incision
	Ⓓ	3D tooth model upper teeth
	Ⓔ	3D tooth model upper back
	Ⓕ	Facial Contour (Upper Lip)
Mandibular	Ⓖ	Whole mandible
	Ⓗ	Mandibular first incision
	Ⓘ	Mandibular second incision
	Ⓙ	Mandibular third incision
	Ⓚ	3D teeth model lower teeth
	Ⓛ	3D teeth model lower back
	Ⓜ	Facial Contour (Lower Lips)

First, the definition of the control point (ie, ⓐ to ⓕ) of the maxillary side is briefly explained. The control point ⓐ is the maxillar maxillar first incisor, the maxillary second incision, and the upper teeth of the three-dimensional tooth model. Used to move parts together.

Control point ⓑ is used to move the maxillary first incision of the maxillar anterior, and control point ⓒ is used to move the maxillar second incision of the maxillar posterior.

The control point ⓓ is used to move the front part of the upper teeth using the first upper teeth of the 3D teeth model, and the control point ⓔ is used to move the back part of the upper teeth using the sixth upper teeth of the 3D teeth model. When used.

The control point ⓕ is used to change the upper lip in the outline of the face.

Here, the front teeth of the upper teeth of the three-dimensional teeth model represents the teeth 1 to 3, the rear teeth of the upper teeth represent the teeth 4 to 7 times. Preferably, the first incisor of the maxilla is the portion corresponding to the front of the upper teeth, and the second incision of the maxilla is the portion corresponding to the back of the upper teeth.

Next, the motion control of the maxillary control point (ie, ⓐ to ⓕ) will be briefly described. The control point ⓐ is the maxillary first incision, the maxillary second incision, and the three-dimensional, respectively, to which a separate control point is assigned. Control the tooth model to move simultaneously. That is, the control point ⓐ also controls the movement of the virtual surgical skeleton controlled by the control points ⓑ to ⓕ.

In addition, the control point ⓑ controls the upper incisor and the upper lip of the three-dimensional teeth model to move simultaneously with the first incision of the maxilla. That is, the control point ⓑ also controls the movement of the virtual surgical skeleton controlled by the control points ⓓ and ⓕ.

In addition, the control point ⓒ controls the upper jaw portion of the three-dimensional teeth model to move simultaneously with the second maxillary incision. That is, the control point ⓒ also controls the movement of the virtual surgical skeleton controlled by the control point ⓔ.

And, the control point ⓓ controls the movement of the upper teeth in the three-dimensional teeth model, the control point ⓔ controls the movement of the upper teeth in the three-dimensional teeth model, the control point ⓕ controls the movement for the upper lip.

On the other hand, briefly explaining the definition of the mandible control point (that is, ⓖ to ⓜ), the control point ⓖ is the mandible as a whole mandible (mandible first mandibular portion, mandibular second incision, third mandibular incision and It is used to move the lower teeth of the 3D tooth model together.

The control point ⓗ is used to move the first inferior mandibular incision showing the incision through anterior segmental osteotomy (ASO) for virtual surgery, and the control point ⓘ uses genoplasty for virtual surgery. It is used to move the mandibular second incision showing the anterior incision through the control point, and the control point ⓙ is used to move the mandibular third incision representing the incision center for virtual surgery.

The control point ⓚ is used to move the front of the lower teeth using the first lower teeth (lower 1) of the three-dimensional teeth model, and the control point ⓛ is used to move the back of the lower teeth using the sixth lower teeth (lower 6) of the three-dimensional teeth model. Used to move.

The control point ⓜ is used to change the lower lip in the outline of the face.

Next, briefly describe the movement control of the mandible control point (that is, ⓖ to ⓜ), the control point ⓖ is a mandibular first incision, mandibular second incision, mandibular bone, each of which is given a separate control point The third incision and the lower teeth of the 3D tooth model are controlled to move simultaneously. That is, the control point ⓖ also controls the movement of the virtual surgical skeleton controlled by the control points ⓗ to ⓜ.

In addition, the control point ⓗ is controlled to simultaneously move the lower teeth of the lower teeth of the three-dimensional teeth model, the lower lip together with the first mandibular incision. That is, the control point ⓗ also controls the movement of the virtual surgical skeleton controlled by the control points and ⓜ.

In addition, the control point 제어 controls the lower teeth of the three-dimensional teeth model to move simultaneously with the third mandibular incision. That is, the control point ⓙ also controls the movement of the virtual surgical skeleton controlled by the control point ⓛ.

And, the control point ⓘ controls the movement of the mandibular second incision, the control point ⓚ controls the movement of the lower teeth in the three-dimensional teeth model, the control point ⓛ controls the movement of the lower teeth in the three-dimensional teeth model , Control point ⓜ controls movement for the lower lip.

As such, the tracing line unit 410 presets a method for determining the respective control points ⓐ to ⓜ according to the predetermined landmark M, and thus all the landmarks M by the user. If is specified, each control point (ⓐ to ⓜ) is determined.

Hereinafter, the virtual surgical unit 420 will be described with reference to FIGS. 19 to 25.

After the tracing line operation is completed through the tracing line unit 410, the virtual surgical unit 420 simultaneously performs virtual surgery on the virtual surgical skeleton according to the paper surgery made by adjusting the control point. In particular, the virtual surgery unit 420, when the paper surgery for the two-dimensional maxilla and the mandible of the virtual surgical skeleton proceeds by the user, the virtual surgical operation results for the three-dimensional teeth model 401 of the virtual surgical skeleton in real time To reflect.

Specifically, the virtual surgical unit 420 performs a series of virtual surgery on the virtual surgical skeleton according to the movement of the virtual surgical skeleton defined in the control points shown in Table 1 above (see FIG. 19). In this case, the virtual surgery unit 420 distinguishes and displays in real time the tracing lines before and after the trial when paper surgery is performed by the user. In FIG. 19, the color of the tracing line (Before Line: BL) is displayed in red, and the color of the tracing line (After Line: AL) is displayed in white.

First, the virtual surgery unit 420 performs paper surgery and virtual surgery on the maxilla and the three-dimensional teeth model (upper part) according to the adjustment of the maxillary control point by the user. In this case, the virtual surgical unit 420 may generate generated data for the intermediate wafer as three-dimensional image data through the wafer data generator 430 to generate the intermediate wafer.

Thereafter, the virtual surgery unit 420 performs paper surgery and virtual surgery on the mandible and the 3D tooth model (lower part) according to the adjustment of the mandibular control point by the user based on the maxillary virtual surgery result. In this case, the virtual surgical unit 420 may generate the final wafer generated data as three-dimensional image data through the wafer data generator 430 to generate the final wafer.

As such, the virtual surgery unit 420 simultaneously performs virtual surgery on the three- dimensional teeth models 401a and 401b as the paper surgery by the user progresses (see FIG. 20). This allows for faster diagnosis, prediction, planning, and wafer fabrication of virtual surgery than paper surgery and virtual surgery. In particular, the virtual surgical unit 420 may generate data for wafer fabrication through the wafer data generator 430 immediately after the paper surgery by the user.

In addition, the virtual surgery unit 420 may perform paper surgery by adjusting a control point by a user, and perform paper surgery as a value for virtual surgery is input to a predetermined menu window 402. (See FIG. 21). FIG. 21 shows the result of the entire maxilla moving downward as 4.97 mm is input to the 'MAX6 (L)' menu 403 of the menu window 402.

In addition, the virtual surgery unit 420 may display the 3D tooth model before the virtual surgery and the 3D tooth model after the virtual surgery overlap each other. At this time, the virtual surgical unit 420 displays the three-dimensional teeth model before and after the virtual surgery on the basis of the points of the same position on the two-dimensional teeth image of the virtual superimposition data before and after the virtual surgery.

Specifically, the virtual surgery unit 420, if the same position (405a, 405b) is specified by the user on the two-dimensional teeth image of the virtual superimposition data (404a, 404b) before and after the virtual surgery, respectively, zero coordinates of the position (See FIGS. 22 and 23). This is to set the corresponding position as a reference point, and to equally match the reference points for each of the three-dimensional tooth models before and after the virtual surgery. Thereafter, the virtual surgical unit 420 displays an overlapping state by displaying each of the pre-virtual 3D tooth model 406a and the post-virtual 3D tooth model 406b on the same screen based on the corresponding reference point (FIG. 24). Reference).

As such, the virtual surgery unit 420 uses the virtual superimposition data to identify the reference point in the body that does not change position by surgery from the two-dimensional tooth image and sets it as a reference point, and then mutually overlaps the three-dimensional tooth model based on the reference point. Do this.

On the other hand, in the case of confirming the surgical result by superimposing the X-ray image taken before and after the operation, it is easy to check the reference point in the body does not change the position according to the operation, but the surgical results for the three-dimensional teeth model can not be confirmed. In addition, in the case of confirming the surgical results by superimposing the CT images taken before and after the surgery, the results before and after the operation of the three-dimensional teeth model, respectively, can be confirmed, but the hassle of having to take the CT image and usually the point inside the body Since it is set to, it is difficult to set a reference point for mutual overlap.

When the synchronization processor 421 needs to perform a virtual surgery on the front side as well as a virtual surgery on the side of the head of the patient, the side virtual surgery skeletons 407a and 408a and the front virtual surgery skeletons 407b and 408b. ) Are kept identical to each other and synchronized (see FIG. 25). To this end, the front virtual surgical skeleton (407b, 408b) is also formed by the tracing line operation by the tracing line unit 410 similar to the above-described side virtual surgical skeleton (407a, 408a). A detailed description thereof will be omitted since it can be easily understood through the tracing line operation of the lateral virtual surgical skeleton 407a and 408a by the tracing line unit 410.

At this time, common landmarks are assigned to the side and front virtual surgical skeletons 407a, 407b, 408a, and 408b through tracing line operations. In other words, these common landmarks represent points that exist at the same location when viewed from the side and front. For example, the first and sixth upper teeth of the three-dimensional teeth model may be marked with landmarks corresponding to the same position when viewed from the side and front, and likewise, the first and sixth lower teeth of the three-dimensional teeth model When viewed from the front, it may be displayed as a landmark corresponding to the same position.

Accordingly, when the page processing is performed on the side virtual surgical skeletons 407a and 408a, the synchronization processor 421 may change the position of the common landmark according to the position change of the common landmark. 407b, 408b). For example, the synchronization processor 421 may reflect the vertical position change with respect to the front virtual surgical skeleton 407b and 408b when the common landmark is changed up and down in the side virtual surgical skeleton 407a and 408a.

As a result, the synchronization processor 421 checks the lateral virtual surgical skeleton 407b and 408b even when the page surgery for the front virtual surgical skeleton 407b and 408b is not directly made by the user. The results of the page surge for 407a and 408a are reflected.

Similarly, when the page processing is performed on the front virtual surgical skeletons 407b and 408b, the synchronization processor 421 changes the position of the common landmark in accordance with the position change of the common landmark. And 408a).

That is, the synchronization processing unit 421 may check the synchronized surgical plan by reflecting the surgical results of the side and the front without having to establish a separate surgical plan for each of the side and the front.

After the maxillary virtual surgery is completed by the virtual surgery unit 420, the wafer data generator 430 generates generated data for the intermediate wafer at the request of the virtual surgery unit 420. In one example, the wafer data generator 430 generates the generated data for the intermediate wafer as follows. That is, the wafer data generation unit 430 sets a box area for manufacturing the wafer between the maxillary and the mandibular teeth in the 3D tooth model after the maxillary virtual surgery, and uses the data included in the box area to 3D high speed. Generated data for an intermediate wafer, which is a RP model (Rapid Prototyping model) by a layer forming method, is generated. In this case, the wafer data generation unit 430 may transmit the generated data for the intermediate wafer to the wafer fabrication unit 431 to fabricate the actual intermediate wafer.

In addition, after the mandible virtual surgery is completed by the virtual surgical unit 420, the wafer data generator 430 generates the final wafer generated data according to a request of the virtual surgical unit 420. Similarly, the wafer data generator 430 generates the final wafer generated data as follows. That is, the wafer data generation unit 430 sets a box area for manufacturing the wafer between the maxillary and the mandibular teeth in the 3D tooth model after the mandible virtual surgery, and uses the data included in the box area to 3D high speed. Generated data for the final wafer, which is an RP model by the additive molding method, is generated. In this case, the wafer data generation unit 430 may transmit the final wafer generation data to the wafer fabrication unit 431 to fabricate the actual final wafer.

The wafer fabrication unit 431 may be included as a component of the virtual surgical apparatus 400 or may be applied as a separate independent component. In this case, the wafer fabrication unit 431 has a 3D printer function such as a kind of 3D rapid prototyping system. At this time, the wafer fabrication unit 431, when the generated data for the intermediate wafer is transferred from the wafer data generator 430, the wafer fabricator 431 trims the intermediate wafer into a horseshoe shape, and then, from the wafer data generator 430, When the production data for the final wafer is delivered, the final wafer is polished into a horseshoe-shaped object.

26 is a flowchart illustrating a virtual surgical method for dental treatment according to the present invention.

First, the tracing line unit 410 performs a tracing line operation using a landmark designated by a user with respect to the virtual overlapping data (S501). As such, the tracing line unit 410 forms a virtual surgical skeleton through tracing line work. In this case, the tracing line unit 410 forms a control point using a landmark according to a preset method (S502).

Thereafter, the virtual surgical unit 420 simultaneously performs virtual surgery according to paper surgery performed by the user on the virtual surgical skeleton (S503). In particular, the virtual surgical unit 420 represents a virtual surgical result of a three-dimensional virtual surgical skeleton, that is, a three-dimensional dental model as a result of paper surgery on the two-dimensional virtual surgical skeleton.

27 is a flowchart illustrating a wafer manufacturing method according to the present invention.

The tracing line unit 410 forms control points for the maxillary virtual surgical skeleton and the mandibular virtual surgical skeleton through tracing line operations on the virtual overlapping data (S510). Detailed description thereof is as described above with reference to FIG. 17 and will be omitted.

Thereafter, the virtual surgical unit 420 shows a virtual surgical result as paper surgery is performed on the maxillary virtual surgical skeleton (S511). At this time, the wafer data generation unit 430 generates and stores the generated data for the intermediate wafer (S512). Thereafter, the wafer fabrication unit 431 actually fabricates the intermediate wafer using the generated data for the intermediate wafer (S513).

In addition, the virtual surgery unit 420 shows a virtual surgery result of paper surgery performed on the mandible virtual surgery skeleton based on the maxillary virtual surgery result (S514). At this time, the wafer data generator 430 generates and stores the final wafer generated data (S515). Thereafter, the wafer fabrication unit 431 actually manufactures the final wafer using the final wafer generated data (S516).

However, in the case of the intermediate wafer, the wafer fabrication unit 431 does not produce the intermediate wafer immediately after the generated data for the intermediate wafer is generated by the wafer data generation unit 430 (S505). In addition, the final wafer may be manufactured at the time of manufacture.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the spirit of the present invention. Various changes and modifications will be possible by those who have the same.

According to the present invention, a wafer may be manufactured by forming a tracing line and a control point according to a landmark designation in virtual overlapping data, and performing virtual surgery on a virtual surgical skeleton simultaneously with paper surgery according to adjustment of a control point by a user. The present invention relates to a virtual surgical device and wafer fabrication for dental treatment.

Claims (23)

1. As a virtual surgical device,

   At least one virtual surgical skeleton is formed through a tracing line operation according to a landmark designation for virtual overlapping data in which a 2D dental image and a 3D dental model are superimposed, and the virtual surgical skeleton is controlled according to a preset method. A tracing line portion for generating a plurality of control points for And

   A virtual surgery unit for performing virtual surgery on the virtual surgical skeleton as a result of paper surgery according to the adjustment of the control point;

   Dental surgery virtual surgical device comprising a.
2. The method of claim 1,

   The tracing line unit assigns a common landmark to the lateral virtual surgical skeleton and the front virtual surgical skeleton through a tracing line operation,

   The apparatus may further include a synchronization processor configured to maintain and synchronize the virtual surgical results according to the paper surgery according to the positional change of the common landmark in the paper surgery for the side virtual surgery skeleton and the front virtual surgery skeleton. Virtual surgical device for dental treatment.
3. The method of claim 1, wherein the generated data for the intermediate wafer is generated according to the maxillary virtual surgical result by the virtual surgical unit, and based on the maxillary virtual surgical result, The virtual surgical apparatus for dental treatment further comprising a wafer data generator for generating the final data generated for the wafer.
4. 4. The wafer fabrication apparatus of claim 3, wherein an intermediate wafer is generated using the generated data for the intermediate wafer, and a final wafer is used to generate the final wafer, which is trimmed using the generated data for the final wafer. The virtual surgical device for dental treatment further comprising.
5. The virtual surgical apparatus of claim 1, wherein the tracing line unit displays the plurality of control points after determining a location according to a preset method for each control point based on the landmark.
6. The virtual surgical apparatus of claim 5, wherein the plurality of control points are defined by a virtual surgical skeleton moving according to a user's manipulation.
7. The virtual surgery apparatus of claim 1, wherein the virtual surgery unit distinguishes and displays in real time the tracing lines before and after the trial when paper surgery is performed by a user.
8. The virtual surgery apparatus of claim 1, wherein the virtual surgery unit performs paper surgery on the virtual surgical skeleton as a value for virtual surgery is input to a predetermined menu window.
9. The dental treatment of claim 1, wherein the virtual surgery unit displays the three-dimensional dental models before and after the virtual surgery by overlapping and displaying the three-dimensional dental models before and after the virtual surgery on the two-dimensional teeth image of the virtual superimposition data before and after the virtual surgery. Virtual surgical device.
10. The method of claim 1,

    The virtual overlapping data is generated by a virtual overlapping device,

    The virtual overlap device,

    A data loading unit for overlaying and loading the 3D tooth model according to the photographing direction of the 2D tooth image;

    A numerical measuring unit for measuring an inclination angle and a length by using reference points respectively selected by the user on the two-dimensional tooth image and the three-dimensional tooth model; And

    A virtual superimposition unit for adjusting the inclination angle of the three-dimensional teeth model according to the inclination angle of the two-dimensional teeth image and adjusting and overlapping the size and position of the two-dimensional teeth image according to the length of the three-dimensional radiographic image;

    Dental surgery virtual surgical device comprising a.
11. The virtual surgical apparatus of claim 10, wherein the virtual surgical skeleton is any one of a maxilla, a mandible, a facial contour, and a three-dimensional tooth model.
12. The virtual surgical apparatus of claim 10, wherein the landmarks are a plurality of feature points necessary for measuring, diagnosing, and establishing a treatment plan for the two-dimensional dental image for paper surgery.
13. A program storage device for tangibly embodying a program of instructions readable by a computer and executable by a computer to execute a virtual surgical method for dental treatment, the method comprising:

    Forming virtual superimposition data in which the two-dimensional teeth image and the three-dimensional teeth model overlap;

    Forming at least one virtual surgical skeleton through a tracing line operation according to a landmark designation for the virtual overlapping data;

    Generating a plurality of control points for controlling each of the virtual surgical skeletons according to a preset manner; And

    Simultaneously performing virtual surgery on the virtual surgical skeleton as a result of paper surgery as the control point is adjusted;

    Program storage device comprising a.
14. The method of claim 13,

    Forming the virtual surgical skeleton, characterized in that for assigning a common landmark to the lateral virtual surgical skeleton and the front virtual surgical skeleton through the trekking line operation,

    Simultaneously performing the virtual surgery, the virtual surgical results according to the paper surgery to maintain the same according to the change in the position of the common landmark at the time of paper surgery for the side virtual surgical skeleton and the front virtual surgical skeleton Program storage device further comprising the step of synchronizing.
15. The program storage device of claim 13, wherein the generating of the plurality of control points comprises displaying the plurality of control points after determining a location according to a preset method for each control point based on the landmark.
16. The program storage device of claim 15, wherein the plurality of control points define a virtual surgical skeleton moving according to user manipulation.
17. The method of claim 13, wherein the step of simultaneously performing the virtual surgery, when the paper surgery by the user is performed, distinguishing and displaying the tracing line before and after the real-time virtual surgery method for dental treatment.
18. The program storage device of claim 13, wherein the simultaneously performing the virtual surgery comprises performing paper surgery on the skeleton for the virtual surgery as the numerical value for the virtual surgery is input to a predetermined menu window.
19. 15. The method of claim 13, wherein the step of simultaneously performing the virtual surgery, a program for superimposing the three-dimensional teeth model before and after the virtual surgery based on the point of the same position on the two-dimensional teeth image of the virtual superimposition data before and after the virtual surgery Storage.
20. The method of claim 13,

    Forming the virtual overlapping data,

    A loading step of loading the three-dimensional tooth model according to the photographing direction of the two-dimensional tooth image; And

    Virtual overlapping by adjusting the tilt angle, size and position of the two-dimensional dental image and the three-dimensional dental model by using reference points selected by the user on the two-dimensional dental image and the three-dimensional dental model, respectively. Program storage comprising the steps.
21. As a wafer manufacturing method,

    An overlapping step of forming virtual overlapping data in which the two-dimensional teeth image and the three-dimensional teeth model overlap;

    Forming at least one virtual surgical skeleton through a tracing line operation according to a landmark designation for the virtual overlapping data;

    Generating a plurality of control points for controlling each of the virtual surgical skeletons according to a preset method;

    An intermediate data generation step of generating generated data for an intermediate wafer as the virtual surgery is performed by paper surgery on the maxillary side of the virtual surgical skeleton; And

    A final data generation step of generating generated data for a final wafer as the virtual surgery is performed by paper surgery on the mandible side of the virtual surgery skeleton based on the virtual surgery result of the maxillary side of the virtual surgery skeleton;

    Wafer manufacturing method comprising a.
22. 22. The method of claim 21, wherein generating the intermediate data comprises fabricating a physically polished intermediate wafer using the generated data for the intermediate wafer.
23. 22. The method of claim 21, wherein the final data generation step comprises fabricating a final wafer that is physically trimmed using the final data generated for the final wafer.

Images