KR20190008686A - Method for designing a dental surgical guide, apparatus, and recording medium thereof - Google Patents

Abstract

The present invention relates to a method for designing a dental surgical guide, an apparatus for the same and a recording medium recording the same. According to a method for designing a dental surgical guide, a panorama image is generated with using a gingival plane and a dental arch line generated from a mouth scan image by reconstructing a CT image. Also, the gingival plane is utilized in implant placement simulation and surgical guide design. Therefore, the panorama image is more accurately generated and efficiency of a digital design process of the surgical guide can be increased. The method for designing a dental surgical guide comprises the steps of: obtaining the CT image of a patient and the mouth scan image; designating one or more dots in the mouth scan image; generating the gingival plane touching at least one part of the plane to an edge of the gingival upper part in the mouth scan image based on the dot; generating the dental arch line in the mouth scan image; matching the mouth scan image with the CT image; and generating the panorama image.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for designing a dental surge guide, a device for the same, and a recording medium for recording the same.

The present invention relates to a method for designing a dental surgeon guide, an apparatus therefor, and a recording medium on which the dental surge guide is designed. More particularly, the present invention relates to a method for digital designing a surge guide for guiding an implant procedure, And a recording medium.

Implant procedures for replacing teeth involve a process of forming a hole into which a fixture is inserted by exposing a alveolar bone by cutting a gingiva and using a drill thereon. A surge guide is used as an auxiliary tool for guiding the position of the hole formed in the alveolar bone and the direction of the fixture when the perforating operation for forming the hole is performed.

1 is a view showing a schematic structure of a surge guide.

1, the surge guide includes a guide hole 1a into which a drill is inserted when forming a hole in the alveolar bone, a drill guide 1b guiding the position of the drill, and a guide support (1c). Here, the guide support may be formed so as to cover the entire teeth, but may be partially formed so as to cover only the peripheral teeth and peripheral gingival surfaces positioned close to the subject teeth depending on the number and location of the teeth to be implanted.

The surge guide is designed on a software program and output to a 3D printer or the like according to the design result. The digital design of the Surgical Guide differs slightly from program to program, but usually goes through data dictionary preparation, implant planning, and surge-guided design steps.

Here, a panoramic image is used when performing implant planning to determine a placement position and a direction of an implant object including a crown, an abutment, and a fixture. According to the prior art, From the data, the user determines the axial image to be used for generating the panoramic image, and the panoramic image is generated based on the dental arch defined in the corresponding axial sectional image.

As described above, according to the conventional art, a panoramic image is generated based solely on CT data. However, most of the implant treatment patients have experience of prosthetic treatment. Therefore, there are many difficulties in defining the accurate dental arch line because the CT data of the patient includes many artifacts due to the prosthesis. Therefore, many errors are generated in the panoramic image generated according to the conventional technique, which affects the entire design process, and the design accuracy of the surge arrester is lowered, which ultimately hinders the satisfaction of the implant procedure.

The present invention has been made in order to solve the problems of the prior art in which the design accuracy of the surge guide is degraded and the satisfaction of the implant procedure is impaired by performing the implant planning based on the panoramic image generated based on the CT data, It is an object of the present invention to provide a method for designing a dental surge guide capable of improving design efficiency throughout the process of designing a surge guide, an apparatus therefor, and a recording medium for recording the same. do.

According to an aspect of the present invention, there is provided a method for designing a dental surge guide for digitally designing a dental surgeon guide on a computer, the method comprising: acquiring a CT image and an oral scan image of a patient; Defining at least one point in the oral scan image; Creating a gingival plane in the mouth scan image based on the defined point, wherein at least a portion of the plane abuts an upper border of the gingiva; Generating a dental arch line on the oral scan image; Matching the oral scan image with the CT image; And a panoramic image based on the gingival plane in the CT image corresponding to the gingival plane of the oral scan image derived by the matching and the dental arch line in the CT image corresponding to the dental arch line of the oral scan image And a step of generating the data.

The step of defining at least one point in the oral scan image may be performed by inputting through the user interface unit or automatically recognizing the point according to a predetermined reference.

In addition, the step of creating the gingival plane may be such that at least a portion of the gingival plane abuts the upper border of the gingiva proximate to the lost tooth corresponding to the implant target.

In addition, the upper boundary of the gingivalus to which at least a part of the gingival plane contacts can be applied to the boundary between the free gingiva and the tooth or the border of the gingiva.

The method of designing a dental surgeon guide may further include generating a crown in a region where teeth have been lost in the oral scan image or the CT image, and the crown may be generated to be positioned on the dental arch line have.

At this time, in the step of creating the crown, the crown may be formed such that the lower portion of the crown does not exceed the predetermined standard of the gingival plane.

In addition, the dental surgeon guide designing method provides implant placement simulation for determining the position, size, and angle of an implant object based on at least one image of the oral scan image, the panoramic image, and the CT image step; And designing a surge guide based on a result of the implant placement simulation.

Here, designing the surgeal guide may include determining the thickness of the support of the surgeal guide for covering the gingiva of a patient based on the position of the gingival plane.

According to another aspect of the present invention, there is provided an apparatus for designing a dental surge guiding guide for performing a computer-aided design of a dental surgical guide, comprising: at least one A gingival plane generating unit for generating a gingival plane at least a part of the plane of the oral scan image in contact with an upper boundary of the gingiva; A dental arch generation unit for generating a dental arch line on the oral scan image; An image matching unit for matching the oral scan image with the CT image of the patient; And a gingival plane in the CT image corresponding to the gingival plane of the oral scan image derived by matching through the image matching unit and a dental arch line in the CT image corresponding to the dental arch line of the oral scan image, And a panorama image generating unit for generating a panorama image.

In addition, the dental surgeon guide designing apparatus includes a simulation providing unit for providing an implant placement simulation for determining a position, a size, and an angle of an implant object; And a guide designing unit for designing a surge guide based on a result of the implant placement simulation by the simulation providing unit.

As described above, according to the present invention, an accurate panoramic image can be generated using a dental arch line defined on the basis of the complete shape of an entire tooth in an oral scan image, and through the implant planning and surge guide The accuracy of the design can be improved.

In addition, according to the present invention, the efficiency of the entire design process can be improved by utilizing panorama image generation, implant planning, and surge guide design based on the plane defined in the oral scan image.

1 shows a schematic structure of a surge guide;
FIG. 2 is a block diagram showing the construction of a dental surge guiding device according to an embodiment of the present invention; FIG.
3 is a reference view for explaining a gingival plane according to an embodiment of the present invention;
FIG. 4 is an example of a screen showing an oral scan image in which a gingival plane and a dental arch line are generated according to an embodiment of the present invention; FIG.
5 is a flowchart of a dental surge guiding method according to an embodiment of the present invention;
6 is an example of a screen showing surgical information created in the dental surgeon guide designing process according to the embodiment of the present invention; And
7 is an example of a screen for defining a region of a surge guide in a dental surgeon guide designing process according to an embodiment of the present invention.

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

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

The apparatus for designing a dental surge guiding guide according to the present invention performs a computer-aided virtual design of a surge guide, which is an auxiliary device for guiding a drilling position, a drilling depth, and a fixation direction of a drill in an alveolar bone drilling operation for an implant procedure, In addition to the surge guide design itself, it provides the entire process necessary for surge guidance design, including image generation and processing, and implant planning, used in surge guide design.

2 is a block diagram showing the construction of a dental surge guiding device according to an embodiment of the present invention. 2, an apparatus 100 for designing a dental surgeon guide according to an embodiment of the present invention includes a user interface unit 10, a gingival plane generating unit 20, a dental arch generating unit 30, A panorama image generating unit 50, a simulation providing unit 60, and a guide designing unit 70.

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

The gingival plane generating unit 20 generates a gingival plane based on at least one point defined in the oral scan image in which the patient's mouth is scanned. For reference, the oral scan image can be obtained by scanning through an oral scanner (Model Scanner) or the like.

The gingival plane is the plane corresponding to the gingival upper border, at least a portion of the gingival plane being in contact with the upper gingival margin.

3 is a reference view for explaining a gingival plane according to an embodiment of the present invention.

Referring to FIG. 3, the marginal gingiva 301 is a collar-shaped ginge surrounding the tooth region of the tooth, and the gingiva 303 is a triangular shape between teeth of the glass gingiva It means a pyramidal gingival filling the space (Embrasure).

Here, the upper boundary of the gingival to which at least a part of the gingival plane contacts can be the boundary b1 of the tooth and the free gingiva or the boundary b2 of the gingival sulcus.

On the other hand, it is obvious that the gingival plane does not exist on one plane because its height differs for each position of the gingiva. Therefore, the gingival plane does not need to touch the upper boundary of all the gingiva, have. At this time, the gingival plane can be generated so as to contact the upper boundary of the gingival adjacent to the implanted tooth to be implanted. By creating this way, the gingival plane can be usefully used for later implant planning or for designing a surge guide.

At least one or more points may be directly input by the user through the user interface unit 10, or may be defined by automatically recognizing the position according to a preset reference. Although the number of defined points is not particularly limited, it is preferable to input three points to create one plane.

When less than three points are input, a plane including the input point is generated. The specific inclination of the plane can be determined by applying statistical data or reference data on the position and angle of the gingiva. In addition, when more than three points are defined, there may not be a plane including all the points. In this case, one plane may be determined by interpolation based on the positions of the points so as to approach the defined points as much as possible . To this end, the gingival plane generating unit 20 may store reference data or an interpolation algorithm for generating a gingival plane.

The dental arch generation unit 30 generates a dental arch line on the oral scan image. The dental arch line is a curve drawn by a dentition and can be generated based on a point inputted by the user through the user interface unit 10 or a point recognized through image processing. For example, the dental arch generation unit 30 can recognize the anterior teeth, the peak of the canine, the peak of the buccal cusp of the molar, and the like, thereby generating the dental arch line.

FIG. 4 shows an example of a screen displaying an oral scan image in which a gingival plane and a dental arch line are generated according to an embodiment of the present invention.

The area A of the screen is the mandible scan image in which the gingival plane (GP) is overlapped with the dental arch line (DL), and the area B is the mandible scan image according to the various angles. (P1, P2, P3).

Referring to FIG. 4, it can be seen that the gingival plane is formed to include three points P1, P2, and P3, and that P1, P2, and P3 are located on the upper boundary of the gingiva, respectively.

4 shows an example in which the gingival plane is brought into contact with the teat gum. However, it is needless to say that the gingival plane may be generated so as to contact the boundary between the tooth and the free gingiva, as described above.

If the point for creating the gingival plane is present on or near the upper border of the gingiva, its position is not particularly limited, but in order for the gingival plane to reflect the full gingival border as shown in Fig. 4, .

4 shows an example in which the dental arch line is generated using three points as the point P4 between the transpositions and the point P5 and P6 between the molars, And may be manually or automatically determined to the appropriate position and number so that the dental arch line is formed close to the patient's dental arch.

The dental arch generation unit 30 may arrange a control point (CP) on the generated dental arch line as shown in FIG. 4 to allow the user to adjust the shape and length of the dental arch line.

The image matching unit 40 matches the oral scan image and the CT image. For reference, the CT image can be obtained by photographing through various CT apparatuses including a CBCT (Cone Beam Computed Tomography) apparatus.

The image matching unit 40 receives a feature point serving as a reference for image matching from the user through the user interface unit 10 or receives an image of a subject in which brightness values of the pixels are changed by an edge at which the brightness value suddenly changes in one direction, It is possible to automatically recognize points that are reference points for image matching, such as corners, in which a value changes, and match two images. Matching can be performed by various matching algorithms based on image features and is not limited to a specific method.

The panoramic image generation unit 50 reconstructs the CT image to generate a panoramic image. For reference, panoramic images are widely used for dental diagnosis in order to observe the condition of whole teeth. Various techniques for generating tooth panoramic images from CT images are introduced.

When a panoramic image is reconstructed by reconstructing a CT image, an axial section and a dental arch line to generate the panoramic image are required. The panoramic image generation unit 50 generates a panoramic image based on the gingival plane in the CT image corresponding to the gingival plane generated in the oral scan image and the dental arch line in the CT image corresponding to the dental arch line generated in the oral scan image . Here, the gingival plane and dental arch line in the CT image corresponding to the gingival plane and dental arch line generated from the oral scan image can be easily derived based on the image registration result.

The panoramic image generation unit 50 applies various projection techniques for reconstructing a three-dimensional CT image to generate a two-dimensional panoramic image, thereby generating a panoramic image, which is a plane image of a CT image corresponding to the gingival plane of the oral scan image, It is possible to generate a panoramic image based on a curve corresponding to the dental arch line of FIG.

According to this, as in the prior art, there is no inconvenience of selecting and selecting the axial end face for generating the panoramic image from the CT image, so that the convenience of the user is greatly improved, and soft tissues such as gingiva are clearly displayed, It is possible to generate clearer and more clear panoramic images by using the gingival plane and dental arch line defined in the oral scan image in which no artifact due to the artifact is present. Since the panoramic image is utilized also in the subsequent implant placement simulation, it is important that the panorama image is directly related to the accuracy of the implant treatment planning.

The simulation data providing unit 60 calculates the size of the implant object based on the reconstructed image of the CT image including the oral scan image, the CT image, the image obtained by matching the two images, and the panorama image and the Multi Planar Reformation (MPR) , Position, angle, and so on. For reference, an implant object includes fixtures, crowns, abutments, and the like as objects constituting an implant.

The simulation providing unit 60 arranges the implant object on the image and changes the position, size, angle, and the like of the object corresponding to the user input through the user interface unit 10. [ At this time, since the oral scan image and the CT image are matched and the coordinate system is shared with each other, if the simulation is performed on one of the oral scan image and the CT image, the simulation result may be reflected on the other image.

The simulation providing unit 60 may arrange the implant object in the tooth loss region detected through image recognition or the like. At this time, the simulation providing unit 60 may set the distance between the adjacent tooth and the fixture, the distance between the adjacent fixtures, And information for selecting an implant object, and can store the reference information or statistical information that has been verified and entered by the user in a recommended procedure guide information commonly used in the industry or from a user, and can be disposed at an appropriate position based on the information.

In this way, the simulation providing unit 60 can provide various functions for simulating the placement of the implant object. Hereinafter, for simplicity of explanation, the elements differentiating from the conventional simulation program will be described.

The simulator 60 generates a crown in a region where a tooth is missing in an oral scan image or a CT image, and generates a crown to be positioned on the dental arch line defined in the oral scan image. For example, the simulator 60 may position the crown so that the center of the crown passes through the dental arch line.

In addition, the simulator 60 generates the lower portion of the crown so that the gingival plane does not exceed the predetermined reference. The crown is actually located above the gingiva because it can not penetrate much of the gingival area. As described above, the simulator 70 uses the gingival plane to determine the maximum range in which the lower portion of the crown can be positioned, thereby enabling the user to perform a correction operation in comparison with the prior art in which the user roughly determines the position of the gingiva and arranges the crown And the position of the crown can be determined more accurately.

Simulation tool 60 provides placement simulation of other implant objects to determine the length, size, location, etc. of fixtures, abutments, etc., based on the location of the deployed crown. The fixture and abutment are automatically arranged corresponding to the position of the crown, and the user can modify the length, size, position, etc. of the implant object through the user interface unit 10.

The guide designing section 70 designs the surge guide based on the simulation results of the implant placement according to the simulation providing section 60. The guide design part 70 includes a guide hole in which a drill for perforating the alveolar bone is inserted corresponding to the position of the fixture, a drill guide for guiding the position of the drill in the form of a column including a guide hole therein, And a guide support supporting a supporting member.

On the other hand, the thickness of the guide support is important in implant surgery. For example, if the support is too thin, there is a risk that the guide can move when the drill is driven because the surgeon guide is not fixed to the patient's mouth. Patients may have pain during the procedure. Therefore, it is necessary to appropriately determine the thickness of the guide support.

The guide design part 70 determines the thickness of the guide support based on the position of the gingival plane generated through the gingival plane generating part 20 in designing the guide support. According to this, a surge guide customized to the patient's mouth can be designed compared to the prior art in which the user arbitrarily determines the thickness of the guide support.

FIG. 5 is a flowchart illustrating a method for designing a dental surgeon guide according to an embodiment of the present invention, and FIGS. 6 and 7 are reference views for explaining a method for designing a dental surgeon guide. Hereinafter, the organic operation of the above-described dental surge guiding apparatus 100 will be described with reference to FIGS. 5 to 7. FIG.

Referring to FIG. 5, it is assumed that the dental surgeon guide designing apparatus 100 acquires a CT image and an oral scan image of a patient requiring an implant operation through a CT apparatus or an oral scanner (S10). In addition, the image preprocessing process such as processing the noise or correcting the tilt in the CT image and the oral scan image can be performed, and the pre-determined information required before designing the surge guide including the patient's personal information For example, a kit type, a fixture type, a guide hole type, a sleeve type, and the like to be used for implant treatment may be preceded.

6 shows an example of a screen on which created surgical information is displayed, as described above.

Then, a gingival plane and a dental arch line are generated in the oral scan image (S20).

The gingival plane generating unit 20 can generate a gingival plane in which at least a part of the plane is in contact with a part of the upper boundary of the ginges based on the point input through the user interface unit 10, Shape or the like to recognize the points on the upper boundary of the gingiva and automatically generate the gingival plane.

On the other hand, considering that the gingival plane is utilized in the simulation for implant planning and the design of the surge guide, it is desirable that the gingival plane is created so as to contact the boundary of the gingival adjacent to the missing tooth, which is the target of the implant. To this end, the gingival plane generating unit 20 recognizes the area in which the tooth has been lost, displays a guide box for guiding an area to be filled with a point around the area, and can guide the user to enter a point around the tooth loss area There will be. In addition, even when three or more points are input and interpolation is required, the weights at the time of interpolation can be applied differently depending on the proximity to the tooth loss region.

Like the gingival plane, the dental arch generation unit 30 can generate a dental arch line on the basis of a point input by the user through the user interface unit 10 or a point recognized through image processing.

After the gingival plane and the dental arch line are generated in the oral scan image, the oral scan image and the CT image are matched through the image matching unit 40 (S30).

The matching of the oral scan image and the CT image can be performed by various matching algorithms based on the characteristics of the image. At this time, the minutiae serving as the reference of matching can be determined by user input through the user interface unit 10, The positions corresponding to each other in the two images can be automatically extracted. In this case, the points used in generating the gingival plane as the feature point may be used. For this purpose, the image matching unit 40 can provide the user with the points used in generating the gingival plane in the oral scan image. According to this, since the number of feature points to be input by the user is reduced, the convenience is increased.

When the matching is completed, the plane and line in the CT image corresponding to the gingival plane and the dental arch line generated in the oral scan image can be grasped through the image matching result. The panoramic image generation unit 50 generates a panoramic image based on the gingival plane in the CT image corresponding to the gingival plane of the oral scan image and the dental arch line in the CT image corresponding to the dental arch line of the oral scan image (S40).

Then, implant placement simulation is performed to determine the position, size, and angle of the implant object constituting the implant such as crowns, fixtures, and abutments through the simulation providing unit 60 (S50). The simulation can be performed on the basis of the oral scan image, the CT image including the reconstructed image, the panoramic image, and the matching image.

In the simulation process, the simulator 60 may generate a crown on the generated dental arch line so that the lower portion of the crown does not fall below a predetermined reference.

Further, when the position of the crown is corrected to be below the gingival plane beyond the predetermined reference value through the user interface unit 10, the simulation providing unit 60 provides the user with an alarm message to perform a more successful implant planning You will be able to plan.

Following the crown, the implant simulation of other implant objects such as fixtures and abutments is completed, and then a surge guide is designed based on the simulation results (S60). At this time, the guide design part 70 determines the thickness of the support for covering the gingiva of the patient based on the position of the gingival plane.

FIG. 7 shows an example of a screen provided in the process of designing a surge guide, which shows a screen for defining an area of a surge guide.

Referring to FIG. 7, the area R of the surgeon guide is a region in which the surgeon guide is mounted on the patient's mouth in the form of covering the gingiva, and is a region marked with green.

The area R of the surge guide can be confirmed from the side through the images 701 and 703 displayed on the right side in Fig. As shown in the two images 701 and 703, the thickness of the area R of the surgeal guide corresponding to the extent of covering the gingiva can be set corresponding to the position of the gingival plane GP generated in the oral scan image .

7 shows an example in which the thickness of the area R of the surgeal guide is set to coincide with the position of the gingival plane GP. However, in order to further cover the gingival by a predetermined distance from the position of the gingival plane GP Or may be created at a position further up the tooth than the gingival plane GP.

In this way, although the thickness of the area R of the surge guide is generated based on the position of the gingival plane GP, the thickness of the specific support can be determined differently from the position of the gingival plane GP depending on the user or the device setting. Needless to say, the user can adjust the area R of the sagittal guide, which is automatically and primarily set based on the position of the gingival plane GP and the dental arch shape. On the other hand, when the adjustment is made, the position of the gingival plane on the image for the surgeal guide design is displayed to be referred to by the user. When the user adjusts the thickness of the support to be spaced from the gingival plane by a predetermined distance, You can do it.

On the other hand, each of the above-described steps may be modified, added, or changed in order as necessary.

For example, in the flow chart of FIG. 5, it is described that the implant placement simulation is performed after the image registration. However, the position and size of the crown are set in the oral scan image, and then the image registration is performed to simulate other implant objects such as fixtures As shown in FIG. In this way, implant placement simulation can be performed separately before or after image matching for each implant object, and simulation for all implant objects does not necessarily have to be performed continuously.

According to the related art, it is difficult to precisely draw a dental arch line for generating a panoramic image and setting a crown position due to artifacts caused by a prosthesis by generating a panoramic image based solely on a CT image, There is a problem that the user has to search for each one.

However, according to the apparatus and method for designing a dental surgeon guide according to the present invention, it is possible to effectively solve the problems of the prior art by generating a panoramic image based on the dental arch line and the gingival plane generated in the oral scan image, Can be used not only for panoramic image generation but also for implant placement simulations and surge guide design, thereby ensuring accuracy and efficiency throughout the design process.

Meanwhile, the method for designing a dental surge arrester guide according to the present invention may be embodied as a program that can be executed by a computer, and may be implemented as a variety of recording media such as a magnetic storage medium, an optical reading medium, and a digital storage medium.

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

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

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

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

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

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

10: user interface unit 20: gingival plane generating unit
30: Dental arch generation unit 40: Image registration unit
50: Panorama image generating unit 60: Simulation providing unit
70: guide design section

Claims (11)

A method of designing a dental surgeon guide for digitally designing a dental surgeon guide on a computer,
Obtaining a CT image and an oral scan image of a patient;
Defining at least one point in the oral scan image;
Creating a gingival plane in the mouth scan image based on the defined point, wherein at least a portion of the plane abuts an upper border of the gingiva;
Generating a dental arch line on the oral scan image;
Matching the oral scan image with the CT image; And
A panoramic image is generated based on a gingival plane in the CT image corresponding to the gingival plane of the oral scan image derived by the matching and a dental arch line in the CT image corresponding to a dental arch line of the oral scan image The method comprising the steps < RTI ID = 0.0 > of: < / RTI >
The method according to claim 1,
Wherein defining at least one or more points in the oral scan image comprises:
Characterized in that the method is performed by inputting via a user interface unit or by automatically recognizing the point according to a pre-established criterion.
The method according to claim 1,
Wherein creating the gingival plane comprises:
Wherein at least a portion of the gingival plane is created to abut an upper border of a gingivalent tooth proximate to an implanted tooth corresponding to an implant target.
The method according to claim 1,
Wherein the upper boundary of the gingiva to which at least a portion of the gingival plane abuts is a boundary of the free gingiva and the tooth or a boundary of the teat gingiva.
The method according to claim 1,
Further comprising the step of creating a crown in a region where teeth have been lost in the oral scan image or the CT image,
Wherein the crown is created to lie on the dental arch line.
6. The method of claim 5,
Wherein the crown is created such that the lower portion of the crown does not exceed the predetermined gauge plane of the gingival plane in the step of creating the crown.
The method according to claim 1,
Providing an implant placement simulation for determining the position, size, and angle of an implant object based on at least one image of the oral scan image, the panoramic image, and the CT image; And
Further comprising: designing a surge guide based on a result of the implant placement simulation.
8. The method of claim 7,
The step of designing the surge guide includes:
And determining the thickness of the support of the surgeal guide for covering the patient ' s gingiva based on the position of the gingival plane.
A computer-executable recording medium on which a program for executing the method for designing a dental surge linear guide according to any one of claims 1 to 8 is recorded.
A dental surge guiding device for performing computer aided design of a dental surge guide, comprising:
A gingival plane generating unit for generating a gingival plane at least a part of the plane of which contacts the upper boundary of the gingule based on at least one point defined in the patient's oral scan image;
A dental arch generation unit for generating a dental arch line on the oral scan image;
An image matching unit for matching the oral scan image with the CT image of the patient; And
A gingival plane in the CT image corresponding to the gingival plane of the oral scan image derived by matching through the image matching unit and a dental arch line in the CT image corresponding to the dental arch line of the oral scan image And a panoramic image generation unit for generating a panoramic image.
11. The method of claim 10,
A simulator providing implant placement simulation for determining the position, size, and angle of the implant object; And
Further comprising a guide designing unit for designing a surge guide on the basis of a result of the implant placement simulation by the simulation providing unit.

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