KR20200118327A - Method and apparatus for designing implant surgery guide using drilling simulation - Google Patents

Abstract

Provided are a method and an apparatus for designing an implant surgery guide using drilling simulation. According to an embodiment, the method for designing the implant surgery guide includes: determining a fixture placement position; generating a guide including a guide hole based on the determined fixture placement position; determining drilling guide information including a drilling sequence and a drilling direction of a drill to perform drilling according to the generated guide of the guide hole; and simulating the determined drilling guide information in the drilling sequence based on a drill image of an actual model.

Description

[Method and apparatus for designing implant surgery guide using drilling simulation}

The present invention relates to a medical image processing technology including a guide design technology for dental implant surgery.

In the process of designing a guide for dental implant surgery using a program, when the plan for the placement position of the implant structure including the fixture is completed, the guide shape is designed and created, and a guide hole based on the position of the fixture is formed in the created guide shape. Is created. In the case of implant surgery using a guide, a planned surgical result can be obtained only when drilling is performed using a drilling hole created in the guide. Therefore, when an anatomical structure such as the amount of opening of the patient is affected, unexpected problems occur and the guide cannot be used often.

According to an embodiment, a thread model image of a drill is provided so that the position and direction of drilling can be confirmed during 　 using a guide for implant surgery designed using a program, and through a drilling simulation using this, it will become a problem in the surgical process. We propose a guide design method and apparatus for implant surgery that enable surgical planning by referring to possible parts in advance.

A method of designing a guide for implant surgery according to an embodiment includes determining an placement position of a fixture, generating a guide including a guide hole based on the determined fixture placement position, and drilling according to the guide of the generated guide hole. Determining drilling guide information including the drilling sequence and direction of the drill, and simulating the determined drilling guide information together with a drill image of a real model according to the drilling sequence.

The steps of determining the drilling guide information include registering a drilling library in which the fixture and drilling sequence are matched, and when designing the guide for implant surgery, checking the fixture placement design information and loading the matching drilling sequence information from the drilling library. Can include.

The step of determining the drilling guide information includes calculating the bone density of the area where the fixture to be placed contacts the alveolar bone, and classifying the bone quality using the calculated bone density, and matching the classified bone quality and the drilling sequence and registering it in the drilling library. And, when designing the guide for implant surgery, it may include checking the bone quality of the patient and calling the matching drilling sequence information from the drilling library. In this case, the step of determining the drilling guide information may further include receiving a selection input of a bone quality state from a user.

The determining of the drilling guide information includes determining a reference axis for a fixture connecting the center point of the lowest point and the center point of the uppermost point of the fixture image disposed in the image data, and the center point and the uppermost point of the lowest point of the drill image to be placed in the image data. It may include determining a drill reference axis connecting the center point of the fixture, and determining a direction of the reference axis of the drill image to coincide with the reference axis of the fixture.

The simulation includes arranging a drill image having a drill reference axis whose direction is determined in the image data, and re-determining the direction of the drill reference axis along the reference axis of the changed fixture image when the fixture placement direction is changed, and the drill image having the re-determined drill axis. It may include relocating to the image data.

In the step of determining the drilling guide information, the top end of the guide hole is determined as the stop position of the drill so that the stopper of the drill abuts the top end of the guide hole, but the stopper of the drill is used as one reference axis, and the stopper reference axis and the top end of the guide hole are The drill stop position can be determined so that the drill is placed in a straight line.

The simulation includes displaying the determined drill stop position of the drill image in the image data, and redisplaying the drill stop position in the image data according to the position of the guide hole changed by the change of the guide hole position when the fixture is placed. It may include steps.

The step of simulating includes displaying a drill image of a real model in which a drill position and a drill direction are determined in image data, displaying drilling order images representing the drilling order together with the drill image, and selected from among the provided drilling order images. It may include displaying an image of a real model corresponding to the drilling sequence image.

The step of simulating includes displaying bone quality information for selecting a bone quality state, and when predetermined bone quality information is selected and input by a user, displaying a drilling sequence matching the selected bone quality state on the screen. I can.

The step of simulating may include displaying drilling sequence images representing the drilling sequence together with the drill image, and removing unnecessary drilling sequence images from the drilling sequence image by a user's manual selection input.

In the guide design apparatus for implant surgery according to another embodiment, a guide design including a guide hole is determined based on the determined fixture placement position, and a drilling sequence and direction of a drill drilling according to the guide of the generated guide hole After determining the drilling guide information including, the control unit that configures the screen to simulate the determined drilling guide information along with the drill image of the real model according to the drilling sequence, and the data including the drill image of the real model and drilling guide information are displayed in a simulation form It includes an output section.

The guide design device for implant surgery further includes a storage unit in which a drilling library matching the fixture and drilling sequence is stored, and the control unit checks the fixture placement design information when designing the guide for implant surgery and retrieves the matching drilling sequence information. You can call it from.

The guide design device for implant surgery further includes a storage unit for storing a drilling library matching the bone quality and the drilling sequence, and the control unit calculates the bone density of the area where the fixture to be placed contacts the alveolar bone, and uses the calculated bone density. When designing a guide for implant surgery, it is possible to check the bone quality of the patient and retrieve matching drilling sequence information from the drilling library.

The control unit determines the reference axis of the fixture connecting the center point of the lowermost point and the center point of the uppermost point of the fixture image disposed in the image data, and determines the reference axis of the drill connecting the center point of the lowermost point and the center point of the uppermost point of the drill image to be placed in the image data. And, it is possible to determine the direction of the reference axis of the drill image to coincide with the reference axis of the fixture.

The output unit arranges the drill image having the determined drill axis in the image data, re-determines the direction of the drill reference axis along the reference axis of the changed fixture image when the fixture placement direction is changed, and rearranges the drill image having the re-determined drill axis to the image data. can do.

The control unit determines the top end of the guide hole as the stop position of the drill so that the stopper of the drill abuts the top end of the guide hole, but the stopper of the drill is used as one reference axis, and the drill is placed in a straight line between the stopper reference axis and the top end of the guide hole. The drill stop position can be determined to be placed and displayed through the output unit.

The output unit may display the determined drill stop position of the drill image on the image data, and may redisplay the stop position of the drill in the image data according to the position of the guide hole changed by the change of the position of the guide hole when the position of the fixture is changed.

The output unit displays a drill image of a real model in which the drill position and drilling direction are determined in the image data, displays drilling order images indicating the drilling order along with the drill image, and the thread corresponding to the selected drilling order image among the provided drilling order images. The image of the model can be displayed.

The output unit displays bone quality information for selecting a bone quality state, and when predetermined bone quality information is selected and input by a user, the drilling sequence matching the selected bone quality state may be displayed on the screen.

The output unit may display drilling sequence images representing the drilling sequence together with the drill image, and may remove unnecessary drilling sequence images from the drilling sequence image by a user's manual selection input.

According to the method and apparatus for designing a guide for implant surgery using a drilling simulation according to an embodiment, the position of the guide hole generated according to the placement position of the implant structure in the process of designing a guide for dental implant surgery using a program and the actual drill A simulation using a real model is provided to prevent unexpected situations that may occur in the surgical process in advance and to establish a surgical plan. Accordingly, the user can check the location and direction to be drilled through the drilling simulation, and can establish a surgery plan by referring in advance to parts that may be problematic during the surgery.

1 is a view showing the configuration of a guide design device for implant surgery according to an embodiment of the present invention,
2 is a diagram showing a guide generation screen according to an embodiment of the present invention;
3 and 4 are views showing a drilling library according to a fixture according to various embodiments of the present invention;
5 is a view showing a simulation screen for confirming the drilling direction during drilling simulation according to an embodiment of the present invention;
6 is a view showing a simulation screen for confirming the stop position of the drill according to an embodiment of the present invention;
7 is a view showing a drilling simulation screen according to an embodiment of the present invention;
8 is a view showing the flow of a guide design method for implant surgery according to an embodiment of the present invention.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention belongs. It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

In describing embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted, and terms to be described later are in the embodiments of the present invention. These terms are defined in consideration of the function of the user and may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout this specification.

Combinations of each block in the attached block diagram and each step in the flowchart may be executed by computer program instructions (execution engines), and these computer program instructions are provided on a processor of a general purpose computer, special purpose computer or other programmable data processing device. As it may be mounted, its instructions executed by the processor of a computer or other programmable data processing device generate means for performing the functions described in each block of the block diagram or each step of the flowchart.

These computer program instructions may also be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing device to implement a function in a particular way, so that the computer usable or computer readable memory It is also possible to produce an article of manufacture containing instruction means for performing the functions described in each block of the block diagram or each step of the flow chart.

In addition, since computer program instructions can be mounted on a computer or other programmable data processing device, a series of operation steps are performed on a computer or other programmable data processing device to create a computer-executable process. It is also possible for the instructions to perform the data processing apparatus to provide steps for executing the functions described in each block of the block diagram and each step of the flowchart.

In addition, each block or each step may represent a module, segment, or part of code containing one or more executable instructions for executing specified logical functions, and in some alternative embodiments mentioned in the blocks or steps. It should be noted that it is also possible for functions to occur out of order. For example, two blocks or steps shown in succession may in fact be performed substantially simultaneously, and the blocks or steps may be performed in the reverse order of a corresponding function as necessary.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments of the present invention exemplified below may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Embodiments of the present invention are provided to more completely describe the present invention to those of ordinary skill in the art to which this invention pertains.

1 is a view showing the configuration of a guide design device for implant surgery according to an embodiment of the present invention.

The guide design device 1 for implant surgery is an electronic device capable of executing a medical image processing program such as a guide design program for dental implant surgery. Electronic devices include computers, notebook computers, laptop computers, tablet PCs, smartphones, mobile phones, personal media players (PMPs), personal digital assistants (PDAs), and the like. Medical image processing programs include scan programs, CAD programs, etc. in addition to guide design programs. In addition, it can be applied to programs for general medical image processing other than for dental implant surgery. Hereinafter, for convenience of explanation, a guide design program for dental implant surgery will be described as an example, but if image processing is possible, the same can be applied to other programs.

The image processing process using the program includes registration of surgical patients, acquisition of CT data and oral model data of the registered patient, registration of CT data and oral model data, generation of arch lines from the matched image data, and panoramic images using arch lines ( It consists of a process including creation of panoramic image), determining the position and size of the crown model from the patient's oral model data, positioning the implant structure including the fixture from the patient's CT data, designing the guide shape, and outputting the final guide. The present invention is configured to provide a drilling process in a simulation using a drill shape drilled in an actual surgery according to the position of the fixture in the above process.

Hereinafter, a configuration of a guide design device for implant surgery having the above-described characteristics will be described with reference to the configuration of FIG. 1.

Referring to FIG. 1, the guide design apparatus 1 for implant surgery according to an embodiment includes a data acquisition unit 10, a storage unit 12, a control unit 14, an input unit 16, and an output unit 18. Include.

The data acquisition unit 10 acquires basic image data of a patient. The basic image data includes X-ray data, CT data, and oral model data. The data acquisition unit 10 may execute basic image data in a program or load data stored in a web page and a server. CT data, oral model data, etc. may be required as basic data for implant placement.

Oral model data can be obtained by scanning a gypsum model created after the patient's mouth with a 3D scanner, or by scanning the inside of the patient's mouth using a 3D intra-oral scanner. have. CT data can be obtained by generating a patient's head tomography images using computed tomography (CT), segmenting the boundary of the tooth from each tomography image, and then combining them into one. The obtained oral model data and CT data may be stored in the storage unit 12.

The storage unit 12 stores information necessary for performing an operation of the guide design device 1 for implant surgery and information generated according to the operation, and provides information upon request of the control unit 14. For example, the storage unit 12 stores the implantation design information and surgery report generated by the control unit 14. The implantation design information includes information on an implantation position and orientation for an implant structure including a fixture, and information on a guide shape. The implantation design information can be used in the surgical guide during the surgical procedure. The surgical report includes basic patient information, surgically planned tooth number, surgical drilling kit information, implant structure and surgical guide information for each tooth number, captured image centered on the planned fixture, and drilling sequence. A drilling library is stored in the storage unit 12 according to an embodiment. The drilling library is stored by matching the drilling sequence according to the fixture. The drilling sequence can be changed depending on the bone quality.

The controller 14 generates placement design information including the placement position and direction of the virtual implant structure from the image data, and designs and provides a guide shape. In this case, the controller 14 may perform a simulation of placing a virtual implant structure object in the image data. The image data includes multidimensional images such as 2D and 3D showing the patient's tooth arrangement created for implant placement planning design. For example, various types of images are used, such as basic image data acquired through the data acquisition unit 10, panoramic image data, image data generated through reconstruction, and matching data obtained by matching a plurality of images. Can be.

After the implant placement plan is designed by the control unit 14, the 3D shape format data of the guide and the surgical report that can confirm the surgery plan of the guide are generated. The surgical report may be replaced with a surgical report or may further include a surgical report.

The controller 14 according to an embodiment generates a guide including a guide hole in image data. Next, after determining the drilling guide information including the drilling sequence and direction of the drill drilling according to the guide in the generated guide hole, the screen is configured to simulate the determined drilling guide information along with the drill image of the real model according to the drilling sequence. At this time, the output unit 18 displays data including a drill image of a real model and drilling guide information on the screen in a simulation form under the control of the control unit 14.

The control unit 14 according to an embodiment determines the drilling sequence. For example, when designing an implant surgical guide, fixture placement design information is checked and matching drilling sequence information is retrieved from the drilling library of the storage unit 12. As another example, the control unit 14 calculates the bone density of the area where the fixture to be placed contacts the alveolar bone, and classifies the bone quality using the calculated bone density. In addition, when designing a guide for implant surgery, the bone quality of the patient is checked, and matching drilling sequence information is retrieved from the drilling library of the storage unit 12. Bone quality can be classified into cartilage (soft bone), intermediate bone (normal bone) and tibia (hard bone).

The control unit 14 according to an embodiment determines the drilling direction for drilling simulation. For example, the controller 14 determines a fixture reference axis connecting the center point of the lowermost point and the center point of the uppermost point of the fixture image arranged in the image data. In addition, a drill reference axis connecting the center point of the lowermost point and the center point of the uppermost point of the drill image to be disposed in the image data is determined. Then, the direction of the reference axis of the drill image is determined so as to coincide with the reference axis of the fixture. At this time, the output unit 18 arranges the drill image having the drill reference axis whose direction is determined in the image data, re-determines the direction of the drill reference axis along the reference axis of the changed fixture image when the fixture placement direction is changed, and drills with the re-determined drill axis. The output unit 18 is controlled to rearrange the image to the image data.

The control unit 14 according to an embodiment determines a drill stop position for drilling simulation. For example, the control unit 14 determines the top end of the guide hole as the stop position of the drill so that the stopper of the drill abuts the top end of the guide hole. In this case, the drill stop position is determined so that the drill is disposed at a position where the stopper reference axis and the top end of the guide hole are aligned with the stopper of the drill as one reference axis, and displayed through the output unit 18. The output unit 18 displays the determined drill stop position of the drill image in the image data, and when the fixture is placed at the position of the fixture, the stop position of the drill can be redisplayed in the image data according to the position of the guide hole changed by the change of the guide hole position. have.

The output unit 18 displays a program screen. The output unit 18 may display data including a real model drill image and drilling guide information in a simulation form. For example, the output unit 18 displays a drill image of a real model in which a drill position and a drill direction are determined in the image data. In addition, drilling sequence images representing the drilling sequence are displayed along with the drill image. At this time, an image of a real model corresponding to the drilling sequence image selected by the user among the provided drilling sequence images is displayed. As another example, the output unit 18 may display bone quality information for selecting a bone quality state, and when predetermined bone quality information is selected and input by a user, a drilling sequence matching the selected bone quality state may be displayed on the screen. The output unit 18 may display drilling sequence images representing the drilling sequence together with the drill image, and remove unnecessary drilling sequence images from the drilling sequence image by a user's manual selection input.

2 is a diagram illustrating a guide generation screen according to an embodiment of the present invention.

Referring to FIG. 2, when the position of implantation of the implant structure including the fixture 220 is determined using a program and the final surgical guide 200 is generated by reflecting the placement information, as shown in FIG. An image of the surgery plan of the patient that can be checked and a 3D image of the generated guide 200 are generated. A perforation is drilled in the alveolar bone of the patient based on the guide 200, and a guide hole 210 corresponding to the position of the perforation is formed, and a drilling procedure may be performed according to the guidance of the guide hole 210. The drilling procedure consists of various steps such as removal of the gums, positioning of the alveolar bone, flattening, initial hole formation and expansion, and thread formation, and drills and drill aids having different diameters and formations for each step may be used. A fixture 220 having an appropriate length and height is placed in the perforation formed according to the guidance of the guide hole 210. In determining the position of the implant structure including the fixture 220, the user can directly determine the position, and there is a method of determining the final position by automatically determining the position using an algorithm of a program and then correcting the position by the user.

When the virtual implantation of the fixture 220 of the tooth number planned for surgery in the image data is completed, drilling guide information is provided so that the user can check it in 2D and 3D images in the form of a simulation. The drilling guide information includes the drilling sequence, drilling direction, and drill stop position. The drilling simulation screen will be described later with reference to FIG. 7.

3 and 4 are diagrams illustrating a drilling library according to a fixture according to various embodiments of the present disclosure.

1, 3, and 4, the drilling sequence can be checked using a drilling library. The drilling library includes drilling sequence information determined according to the feature information of the fixture. The feature information of the fixture can be checked in the fixture library. The feature information of the fixture includes the shape, manufacturer, system, diameter, and length information of the fixture model. The fixture library and drilling library may be pre-registered and stored in the program. The guide design device 1 for implant surgery refers to the drilling library and determines the drilling sequence according to the feature information of the fixture to be placed. For example, when the feature information of the selected fixture model as shown in FIG. 3 is manufacturer: Osstem implant, system: TSIII, fixture diameter: 4.5, fixture length: 8.5, and the bone quality is cartilage (soft bone), The drilling sequence according to the fixture is determined in the order of Tissue Punch, Flattening Drill (Option), Initial Drill, F3.5 Drill, and F4.0 Drill.

After registering the drilling library matching the fixture and drilling sequence, when designing the guide for implant surgery, the fixture placement design information is checked, and the matching drilling sequence information is imported from the drilling library and this is simulated.

The drilling sequence of the drilling library according to an embodiment is determined according to the bone density of the alveolar bone. To this end, the guide design device 1 for implant surgery calculates the bone density of the area where the fixture to be placed contacts the alveolar bone, and determines the bone quality using the calculated bone density information. When calculating the bone density, the average bone density can be calculated. For example, bone quality determination is largely classified into cartilage (soft bone), intermediate bone (Normal bone), and tibia (hard bone). And it matches the set bone quality and drilling sequence and registers it in the drilling library. The basic setting value of each bone quality can be changed through user setting. The guide design device 1 for implant surgery according to an embodiment checks the bone quality of the patient when designing the guide for implant surgery, and loads matching drilling sequence information from the drilling library and simulates it.

5 is a view showing a simulation screen for confirming a drilling direction during drilling simulation according to an embodiment of the present invention.

Referring to FIG. 5, when expressing the drilling simulation of the drilling library, the drilling direction uses a drill reference axis. The fixture image 50 placed in the image is 3D shape data. The drill image 52 is also 3D shape data and is a real model. The fixture image 50 has a fixture reference axis 504 connecting the center point 500 of the lowermost point and the center point 502 of the uppermost point. Similarly, the drill image 52 expressed in the image data also includes a drill reference axis 524 connecting the center point 520 of the lowermost point and the center point 522 of the uppermost point. At this time, as the drill image 52 is expressed by aligning the drill reference axis 524 with the fixture reference axis 504, the direction of the drill image 52 is positioned in the same direction as the implanted fixture image 50. . The drill image 52 can be expressed in both 2D and 3D image data. The direction of the drill image 52 cannot be arbitrarily changed by the user, but when the orientation of the fixture image 50 is changed, it is relocated along the same changed fixture reference axis 504.

6 is a view showing a simulation screen for confirming the stop position of the drill according to an embodiment of the present invention.

1 and 6, the stop position of the drill 60 to be drilled uses the generated guide hole 62. The width of the generated guide hole 62 is included in the guide hole library information according to the drill 60 in advance. The guide design device 1 for implant surgery uses the top end 620 of the guide hole 62 as the stop position of the drill 60 so that the stopper 600 of the drill 60 is the top end of the guide hole 62 Make contact with (620). At this time, with the stopper 600 of the drill 60 as one reference axis 602, the drill 60 is positioned at a position where the reference axis 602 and the uppermost end 620 of the guide hole 62 are in a straight line. Let it be. If the position of the fixture is changed in the same direction as the direction of the drill 60, the position of the guide hole 62 is also changed accordingly, so the stop position of the drill 60 may be redisplayed according to the position of the changed guide hole 62. have.

7 is a view showing a drilling simulation screen according to an embodiment of the present invention.

Referring to FIG. 7, a fixture image 70 and a real-model drill image 72 are provided as image data on the drilling simulation screen. The fixture image 70 is displayed on the screen in accordance with the placement design information including the placement position and the placement direction. For example, the placement position of the fixture image 70 is determined in consideration of the distance to the alveolar bone and the distance to the gum margin. Fixture feature information may be displayed together with the fixture image 70. The fixture feature information includes a tooth number (for example, #16) 700 and a fixture specification 702 for placing the fixture. The fixture specification 702 includes a fixture length (eg, 8.5 mm) and a fixture diameter (eg, 4.5 mm), and the like. The drill image 72 of the real model is displayed on the screen after the drill position, the drill direction, and the drill stop position are determined. Drilling guide information is displayed along with the drill image 72, and the drilling guide information includes a drilling sequence image 720, the number of drilling processes, and bone quality information 722 of the alveolar bone. Drilling guide information can be read from the drilling library. The drilling sequence 720 may be different depending on the configuration of the drill kit and the fixture system, and the entire drilling sequence of the drilling library matching the selected fixture 70 is provided. At this time, the optional drill may display options or the like.

During drilling simulation, as shown in FIG. 7, the drilling sequence image 720 is also displayed on the screen. Through the drilling order image 720, the total number of drills used (eg, 6) can be checked, and the user can move to a desired drill order. For example, when the user clicks the drilling order image desired to view, for example, the third drill in the third order, the drill image corresponding to the clicked drilling order and the type of drill (for example, Initial Drill) can be checked. At this time, it is possible to check both 2D image data and 3D image data.

Since errors may occur in the patient's bone quality information determined in the program, the user can directly select the bone quality information 722 about whether it is a soft bone, a normal bone, and a hard bone. I can. To this end, bone quality information 722 is provided on the screen and the user selects it. When a user selects predetermined bone quality information (eg, an intermediate bone button), a drilling sequence matching the selected bone quality is provided on the screen, allowing the user to check the drilling sequence. In addition, drills that are not used by the user in the drilling sequence can be registered separately in user settings, etc. so that they are not displayed on the screen.

8 is a view showing the flow of a guide design method for implant surgery according to an embodiment of the present invention.

1 and 8, the guide design apparatus 1 for implant surgery determines the placement position of the fixture (S810) and generates a guide including a guide hole based on the determined placement position of the fixture (S820). Subsequently, the guide design device 1 for implant surgery determines drilling guide information including the drilling sequence and direction of the drill to be drilled according to the guide of the guide hole (S830).

In the step of determining the drilling guide information (S830), the guide design device 1 for implant surgery may check the fixture placement design information when designing the guide for implant surgery and load matching drilling sequence information from the drilling library.

In the step of determining drilling guide information (S830), the guide design device 1 for implant surgery may check the bone quality of the patient when designing the guide for implant surgery, and retrieve matching drilling sequence information from the registered drilling library. . Bone quality can be classified into cartilage, intermediate bone and tibia. At this time, the patient's bone quality may be selected and input from the user.

In the step of determining the drilling guide information (S830), the guide design apparatus 1 for implant surgery may determine a fixture reference axis connecting the center point of the lowermost point and the center point of the uppermost point of the fixture image disposed in the image data. In addition, after determining a drill reference axis connecting the center point of the lowermost point and the center point of the uppermost point of the drill image to be disposed in the image data, the direction of the reference axis of the drill image may be determined so as to coincide with the reference axis of the fixture.

In the step of determining the drilling guide information (S830), the guide design device 1 for implant surgery determines the top end of the guide hole as the stop position of the drill so that the stopper of the drill contacts the top end of the guide hole. In this case, the drill stop position may be determined so that the drill is disposed at a position in which the stopper reference axis and the top end of the guide hole are aligned with the stopper of the drill as one reference axis.

Subsequently, the guide design device 1 for implant surgery simulates the determined drilling guide information together with the actual model drill image according to the drilling sequence (S840).

In the simulation step (S840), the guide design device 1 for implant surgery places a drill image having a drill reference axis whose direction is determined in the image data, and when changing the placement direction of the fixture, the direction of the drill reference axis along the reference axis of the changed fixture image It is possible to re-determine and relocate the drill image having the re-determined drill axis to the image data.

In the simulation step S840, the guide design apparatus 1 for implant surgery may display the determined drill stop position of the drill image on the image data. In addition, when the fixture placement position is changed, the stop position of the drill may be redisplayed in the image data according to the position of the guide hole changed by the position change of the guide hole.

In the simulation step S840, the guide design apparatus 1 for implant surgery may display a drill image of a real model in which a drill position and a drill direction are determined in the image data. In addition, drilling sequence images representing the drilling sequence are displayed together with the drill image, and an image of a real model corresponding to a selected drilling sequence image among the provided drilling sequence images may be displayed.

In the simulation step (S840), the guide design apparatus 1 for implant surgery may display bone quality information for selecting a bone quality state. In addition, when predetermined bone quality information is selected and input by the user, a drilling sequence matching the selected bone quality state may be displayed on the screen.

In the simulation step S840, the guide design device 1 for implant surgery may display drilling sequence images representing the drilling sequence together with the drill image. In addition, an unnecessary drilling sequence image can be removed from the drilling sequence image by a user's manual selection input.

So far, the present invention has been looked at around the embodiments. Those of ordinary skill in the art to which the present invention pertains will be able to understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

Claims (21)

Determining the placement position of the fixture;
Generating a guide including a guide hole based on the determined fixture placement position;
Determining drilling guide information including a drilling sequence and direction of a drill to be drilled according to the guide of the generated guide hole; And
Simulating the determined drilling guide information together with the actual model drill image according to the drilling sequence;
Guide design method for implant surgery comprising a. The method of claim 1, wherein determining the drilling guide information
Registering a drilling library in which the fixture and the drilling order are matched; And
When designing a guide for implant surgery, checking fixture placement design information and calling matching drilling sequence information from a drilling library;
Guide design method for implant surgery comprising a. The method of claim 1, wherein determining the drilling guide information
Calculating the bone density of the area where the fixture to be placed contacts the alveolar bone, and classifying the bone quality using the calculated bone density;
Matching the classified bone quality and the drilling sequence to register in a drilling library; And
When designing a guide for implant surgery, checking the bone quality of the patient and calling matching drilling sequence information from the drilling library;
Guide design method for implant surgery comprising a. The method of claim 3, wherein determining the drilling guide information
Receiving a selection input of a bone quality state from a user;
Guide design method for implant surgery, characterized in that it further comprises. The method of claim 1, wherein determining the drilling guide information
Determining a reference axis of a fixture connecting the center point of the lowermost point and the center point of the uppermost point of the fixture image arranged in the image data;
Determining a drill reference axis connecting the center point of the lowermost point and the center point of the uppermost point of the drill image to be disposed in the image data;
Determining a direction of the reference axis of the drill image to coincide with the reference axis of the fixture;
Guide design method for implant surgery comprising a. The method of claim 1, wherein the step of simulating
Arranging a drill image having a drill reference axis whose direction is determined in the image data; And
Re-determining the direction of the drill reference axis along the reference axis of the changed fixture image when changing the placement direction of the fixture, and rearranging the drill image having the re-determined drill axis in the image data;
Guide design method for implant surgery comprising a. The method of claim 1, wherein determining the drilling guide information
The top end of the guide hole is determined as the stop position of the drill so that the stopper of the drill abuts the top end of the guide hole, but with the stopper of the drill as one reference axis, the drill is placed in a position where the reference axis of the stopper and the top end of the guide hole are aligned. Guide design method for implant surgery, characterized in that to determine the drill stop position. The method of claim 1, wherein the step of simulating
Displaying the determined drill stop position of the drill image on the image data; And
Re-displaying the stop position of the drill in the image data according to the position of the guide hole changed by the change of the position of the guide hole when the position of the fixture is changed;
Guide design method for implant surgery comprising a. The method of claim 1, wherein the step of simulating
Displaying a drill image of a real model in which a drill position and a drill direction are determined in the image data;
Displaying drilling sequence images representing the drilling sequence together with the drill image; And
Displaying an image of a real model corresponding to a selected drilling sequence image among the provided drilling sequence images;
Guide design method for implant surgery comprising a. The method of claim 1, wherein the step of simulating
Displaying bone quality information for selecting a bone quality state; And
When predetermined bone quality information is selected and input by a user, displaying a drilling sequence matching the selected bone quality status on a screen;
Guide design method for implant surgery comprising a. The method of claim 1, wherein the step of simulating
Displaying drilling sequence images representing the drilling sequence together with the drill image; And
Removing the unnecessary drilling sequence image from the drilling sequence image by a user's manual selection input;
Guide design method for implant surgery comprising a. After determining the fixture placement position, generating a guide including a guide hole based on the determined fixture placement position, and determining the drilling guide information including the drilling sequence and direction of the drill drilling according to the guide hole created, the determined drilling guide information A control unit configuring a screen to simulate according to a drilling sequence with a real model drill image; And
An output unit that displays data including a drill image of a real model and drilling guide information in a simulation form;
Guide design device for implant surgery comprising a. The method of claim 12, wherein the guide design device for implant surgery
A storage unit in which a drilling library matching the fixture and drilling order is stored; It further includes,
The control unit
When designing a guide for implant surgery, a guide design device for implant surgery, characterized in that the fixture placement design information is checked and matching drilling sequence information is called from a drilling library. The method of claim 12, wherein the guide design device for implant surgery
A storage unit in which a drilling library matching the bone quality and drilling sequence is stored; It further includes,
The control unit
Calculate the bone density of the area where the fixture to be placed contacts the alveolar bone, and classify the bone quality using the calculated bone density,
When designing a guide for implant surgery, the guide design device for implant surgery, characterized in that, by checking the bone quality of the patient and calling the matching drilling sequence information from the drilling library. The method of claim 12, wherein the control unit
Determine a fixture reference axis that connects the center point of the lowermost point and the center point of the uppermost point of the fixture image arranged in the image data,
Determine the drill reference axis connecting the center point of the lowest point and the center point of the uppermost point of the drill image to be placed in the image data,
Guide design device for implant surgery, characterized in that determining the direction of the reference axis of the drill image so as to coincide with the reference axis of the fixture. The method of claim 12, wherein the output unit
Placing the drill image having the determined drill reference axis in the image data, re-determining the direction of the drill reference axis along the reference axis of the changed fixture image when changing the placement direction of the fixture, and rearranging the drill image having the re-determined drill axis in the image data. Guide design device for implant surgery characterized by. The method of claim 12, wherein the control unit
The top end of the guide hole is determined as the stop position of the drill so that the stopper of the drill abuts the top end of the guide hole, but with the stopper of the drill as one reference axis, the drill is placed in a position where the reference axis of the stopper and the top end of the guide hole are aligned. Guide design device for implant surgery, characterized in that to determine the drill stop position and display through the output unit. The method of claim 12, wherein the output unit
For implant surgery, characterized in that the determined drill stop position of the drill image is displayed in the image data, and the stop position of the drill is redisplayed in the image data according to the position of the guide hole changed by the change of the guide hole position when the fixture placement position is changed. Guide design device. The method of claim 12, wherein the output unit
Display the drill image of the real model in which the drill position and drill direction are determined in the image data,
Displays drilling sequence images indicating the drilling sequence along with the drill image,
Guide design device for implant surgery, characterized in that to display an image of a real model corresponding to the selected drilling sequence image among the provided drilling sequence images. The method of claim 12, wherein the output unit
Display bone quality information for selecting a bone quality state,
When predetermined bone quality information is selected and input by the user, the guide design apparatus for implant surgery, characterized in that the drilling sequence matching the selected bone quality is displayed on the screen. The method of claim 12, wherein the output unit
Display drilling sequence images indicating the drilling sequence along with the drill image,
Guide design device for implant surgery, characterized in that the unnecessary drilling sequence image is removed from the drilling sequence image by a user's manual selection input.

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