KR102363412B1 - Method for testing dental implant surgical guide apparatus thereof - Google Patents

Abstract

Disclosed are a guide verification method for an implant surgery and a device thereof. The guide verification method for the implant surgery and the device thereof according to one embodiment, after a vertical structure is implanted in the oral cavity, verify whether or not the guide is suitable through a comparison between the guide design data designed according to the pre-operation surgical plan of a patient and the data for verification obtained after fastening the guide to the oral cavity. Therefore, the present invention is capable of improving an accuracy of the guide surgery.

Description

Guide verification method and device for implant surgery {Method for testing dental implant surgical guide apparatus thereof}

The present invention relates to a dental image processing technology, and more particularly, to a dental image processing technology for verifying the suitability of a guide for dental implant surgery.

When performing dental implant surgery, an implant surgery plan is established using software prior to surgery. The dental implant surgery planning process using software generally acquires the patient's CT data and oral data, matches them, and considers the patient's anatomical structure for implant structures (e.g., crowns, fixtures, abutments, anchor pins). etc.) to establish a surgical plan to determine the location, and to design a surgical guide shape based on the plan information.

When designing a guide for implant surgery using software, the patient's oral data is loaded from the software and the guide shape is designed based on this. However, if an error occurs in the process of acquiring the patient's oral data or an error occurs in the process of outputting the designed guide using a 3D printer, the fit is incorrect when the guide is fastened to the patient's mouth before surgery. can do. In this case, the fixture may be placed differently from the planned location for surgery.

Some commercially available software provides a function to compare the planned fixture position with the fixture position of the surgical result based on CT data after surgery. However, it is often difficult to change the position of the fixture where the error has occurred after surgery has already been completed. In order to prevent such a problem in advance, there is a method of generating a guide window for confirming fit and confirming the fit when fastened to the patient's oral cavity. However, there may be a difference in the accuracy of the fit depending on the user's point of view.

According to one embodiment, by verifying the suitability of the guide for dental implant surgery, the implant guide surgery result can be predicted in advance, thereby providing a guide verification method for implant surgery and an apparatus for improving the accuracy of the guide surgery.

A guide verification method for implant surgery according to an embodiment includes: acquiring image data including an erect structure placed after the erection of the erect structure in the mouth of a patient; and designing a guide region from the obtained image data according to the patient's surgical plan A step of generating and outputting one guide design data, generating verification data from the patient's mouth after fastening the guide in the patient's mouth, and matching guide design data and verification data based on the upright structure and verifying whether the guide is suitable by using matching data and providing a verification result.

In the step of acquiring the image data including the upright structure, the upright structure may be placed in the space between the expected fixture placement areas where the fixture is expected to be placed, or the upright structure may be placed in the tooth number area where the fixture is not placed.

The guide design data consists of the first oral data obtained from the patient's oral cavity, the object used for establishing the surgical plan, the upright structure object, and the guide shape designed according to the surgical plan in the form of individual data, respectively, and data for verification The second oral data obtained from the oral cavity in a state in which the guide is fastened to the patient's oral cavity may be configured in a single form.

In the step of generating the guide design data and outputting it, the implant structure including the fixture is placed in the image data, and the fixture drilling hole generated as the fixture reference axis and the upright structure binding hole to which the upright structure is attached do not overlap each other. It may include determining the position of the drilling hole, and outputting a warning message when drilling is impossible in the fixture drilling hole due to overlap with the upright structure fixing hole.

In the step of generating the data for verification, the secondary oral data can be obtained and used as data for verification by scanning only the upright structure 　 area actually required for verification from the oral cavity of the patient who has entered the guide in the oral cavity.

The step of matching the guide design data and the verification data is the step of automatically matching the guide design data with the guide position of the verification data using the upright structure as the matching point. It may include aligning the guide positions of the guide design data and the verification data based on the matching point, and final matching using guide shape information around the matching point.

In the step of verifying the suitability of the guide using the registration data and providing the verification result, when registration is complete, the guide shape is used for the secondary oral data that is scanned with a partial area centered on the upright structure. After virtually creating the overall shape of the guide, it is possible to verify the fit of the guide.

The step of verifying the fit of the guide using the matching data and providing the verification result includes the step of verifying whether the guide is suitable by comparing the guide area of the matched guide design data and the guide area of the verification data, and the guide fit error may include the step of providing guide error information when .

The guide verification method for implant surgery includes the steps of estimating the location information of a fixture that is expected to be placed on the verification data, and the location information of the fixture placed on the guide design data and the location information of the fixture that is expected to be placed on the verification data. The method may further include predicting the results after guide surgery in advance by comparing the location information to provide the location comparison results.

The step of estimating the location information of the fixture that is expected to be implanted on the verification data includes the steps of recognizing the center point of the fixture using the location information of the fixture drilling hole on the verification data, and the distance from the center point of the fixture drilling hole to the center point of the fixture It may include creating a virtual fixture for verification using the information.

A guide verification device for implant surgery according to another embodiment includes a data acquisition unit that acquires image data including an erect structure after the erection structure is placed in the mouth of a patient, and a guide region from the acquired image data to a patient's surgical plan A guide design data is created, and verification data is generated from the patient's mouth after the guide is fastened in the patient's mouth, and the guide design data and verification data are matched based on the upright structure, and then the guide is used using the registration data. It includes a control unit for verifying the suitability of , and an output unit for displaying the generated guide design data, verification data, and verification result.

The data acquisition unit may acquire image data including an upright structure implanted in the space between the expected fixture implantation regions in which fixture placement is expected, or placed in a tooth number region in which fixtures are not implanted.

The control unit acquires secondary oral data by scanning only the upright structure 　 area actually required for verification from the oral cavity of the patient who has signed the guide in the oral cavity, and uses it as data for verification. By using the guide shape designed for the secondary oral data in which the partial area is scanned, the overall shape of the guide can be created virtually, and then the fit of the guide can be verified.

The controller may compare the guide area of the matched guide design data and the guide area of the verification data to verify whether the guide is suitable, and may provide guide error information when a guide fitting error occurs.

The control unit predicts the position information of the fixture that is expected to be implanted on the verification data, and compares the position information of the fixture implanted on the guide design data with the position information of the fixture that is expected to be implanted on the verification data to compare the position By providing the results, it is possible to predict the results after the guide surgery in advance.

When the patient enters the guide for implant surgery designed using software, verification data is obtained from the patient's mouth, and prior to surgery, it is placed in the patient's mouth through registration with the design data including the guide shape designed according to the surgical plan. It is possible to verify the suitability of the fastened guide and to predict the result of the guide operation in advance, so that the accuracy of the guide operation can be improved.

It is possible to provide verification results for the suitability of the guide fastened to the oral cavity of the patient by using an upright structure on the software, rather than the method of confirming the suitability using the guide window. In particular, an upright structure is placed in the patient's mouth before securing the patient's data for guide surgery and then used for the purpose of fixing the guide like teeth, so that a separate anchor pin for guide fixing is used. may not be installed. In addition, 　 can be used as a reference point for guide matching for guide conformity confirmation to verify guide conformity.

Furthermore, it is possible to predict the results after guide surgery by providing information on the location of the fixtures expected to be placed in this state. When a guide fit error occurs, information on how the guide is oriented incorrectly is also provided. After confirming this, the guide is tightened. can be corrected.

1 is a view showing the configuration of a guide verification device for implant surgery according to an embodiment of the present invention;
2 is a view showing a flow of a guide verification method for implant surgery according to an embodiment of the present invention;
3 is a view showing a patient case requiring erection of an upright structure according to an embodiment of the present invention;
4 and 5 are views showing an example of erecting an upright structure according to various embodiments of the present invention;
6 is a view showing the shape of an upright structure according to an embodiment of the present invention;
7 is a view showing an example of an image for implanting a fixture in consideration of the installation position of the upright structure according to an embodiment of the present invention;
8 is a view showing an example of an image for generating a fixture drilling hole and an upright structure binding hole according to an embodiment of the present invention;
9 is a view showing guide design data according to an embodiment of the present invention;
10 is a view showing secondary oral data used as data for verification according to an embodiment of the present invention;
11 is a view showing secondary oral data obtained by scanning only the upright structure area according to an embodiment of the present invention;
12 is a view showing a data loading screen for matching guide design data and verification data according to an embodiment of the present invention;
13 is a view showing an example of creating a virtual guide overall shape of the secondary oral data according to an embodiment of the present invention;
14 is a diagram illustrating an example of inputting a matching point for data matching according to an embodiment of the present invention;
15 is a view showing a screen for providing a data matching result according to an embodiment of the present invention;
16 is a view showing an image comparing fixture positions of guide design data and verification data according to an embodiment of the present invention;
17 is a view showing a video screen comparing two fixture positions according to an embodiment of the present invention;
18 is a diagram illustrating an example of providing a fit result verification screen and a fixture position comparison screen together according to an embodiment of the present invention.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present invention, if it is determined that a detailed description of a well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted, and the terms to be described later are used in the embodiment of the present invention. As terms defined in consideration of the function of Therefore, the definition should be made based on the content throughout this specification.

Each block in the accompanying block diagram and combinations of steps in the flowchart may be executed by computer program instructions (execution engine), which are executed by the processor of a general-purpose computer, special-purpose computer, or other programmable data processing device. It may be mounted so that its instructions, which are executed by the processor of a computer or other programmable data processing device, create means for performing the functions described in each block of the block diagram or in each step of the flowchart.

These computer program instructions may also be stored in a computer usable or computer readable memory which may direct a computer or other programmable data processing device to implement a function in a particular manner, and thus 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 flowchart, the instructions stored in the block diagram.

And since the computer program instructions may be mounted on a computer or other programmable data processing device, a series of operational steps is performed on the computer or other programmable data processing device to create a computer-executable process to create a computer or other programmable data processing device. It is also possible that instructions for performing the data processing apparatus provide steps for executing functions described in each block in the block diagram and in each step in the flowchart.

In addition, each block or step may represent a module, segment, or portion of code comprising one or more executable instructions for executing specified logical functions, and in some alternative embodiments the blocks or steps referred to in some alternative embodiments. It should be noted that it is also possible for functions to occur out of sequence. For example, it is possible that two blocks or steps shown one after another may be performed substantially simultaneously, and also the blocks or steps may be performed in the reverse order of the corresponding functions, if necessary.

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

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

Referring to Figure 1, the guide verification device for implant surgery (hereinafter referred to as 'guide verification device') 1 verifies the suitability of the guide fastened to the actual oral cavity of the patient to predict the results after the guide surgery in advance. The guide verification device 1 is an electronic device capable of executing a medical image processing program. Electronic devices include computers, notebook computers, laptop computers, tablet PCs, smart phones, mobile phones, personal media players (PMPs), personal digital assistants (PDAs), and the like. The medical image processing program may be applied to a program for general medical image processing other than that for implant surgery. Hereinafter, for convenience of explanation, an image processing program for implant surgery will be described as an example, but if image processing is possible, it is of course applicable to other programs as well.

The guide verification device 1 according to an embodiment is used to fix the guide, such as teeth, after placing a vertical stop in the mouth of the patient before securing the patient's data for guide surgery. . In addition, by using the upright structure as a reference point of guide matching for guide conformity confirmation, it is possible to verify the conformity of the guide.

For example, the guide verification device 1 acquires image data in a state in which an erect structure is placed in the patient's oral cavity before surgery. Then, from the acquired image data, a guide for implant surgery is designed, and the guide design data is output and fastened to the patient's mouth. Then, verification data for verifying the fit of the guide is obtained from the oral cavity of the patient to which the guide is fastened. And 　The accuracy of the surgical results can be improved by enabling the prediction of the results after the guide surgery in advance by verifying the information on the fit of the surgical plan with the guide that is actually entered into the oral cavity of the patient through the matching of the guide design data planned before the surgery and the verification data. can be raised

Hereinafter, the configuration of the guide verification device 1 having the above-described characteristics will be described later.

Referring to FIG. 1 , the guide verification apparatus 1 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 .

The data acquisition unit 10 acquires image data including the erect structure after the erection structure is placed in the oral cavity of the patient. The data acquisition unit 10 may acquire image data including an erect structure implanted in the interspace between the expected fixture implantation regions, or implanted in the tooth number region in which the fixture is not implanted. An example of erecting an upright structure will be described later with reference to FIGS. 4 and 5 .

The controller 14 generates guide design data in which a guide area is designed according to the patient's surgical plan from the image data acquired through the data acquisition unit 10 . And after the guide is fastened in the patient's oral cavity, data for verification is generated from the patient's oral cavity. Thereafter, after matching the guide design data and the verification data based on the upright structure, the fit of the guide is verified using the matching data.

The guide design data is data obtained before the patient engages the guide, and the first oral data obtained from the patient's oral cavity, the object used to establish the surgical plan including the fixture, the upright structure object, and the surgical plan Each designed guide shape is composed of individual data types. Objects used in establishing a surgical plan include, for example, a crown, a fixture, an abutment, an anchor pin, and the like.

The data for verification is the second oral data obtained from the oral cavity of the patient who actually engages the guide. The data for verification consists of oral data obtained by scanning the oral cavity while the guide is fastened to the patient's oral cavity in a single form.

Each oral data of the design data and the data for verification may be dental model scan data obtained by scanning a plaster model created by imitating a patient's oral cavity with a 3D scanner. Alternatively, it may be impression body scan data obtained by scanning the impression body imitating the patient's oral cavity with a 3D scanner. As another example, it may be oral scan data obtained by directly scanning the inside of the patient's oral cavity using a 3D intra-oral scanner. The obtained oral data may be stored in the storage unit (12). It is distinguished in that the oral data in the design data is the scan data obtained from the patient's mouth before the surgical planning process for guide design, and the verification data is the scan data obtained from the patient's mouth after the guide is fastened in the patient's mouth.

The control unit 14 matches the guide design data and the verification data using software, and verifies whether the guide is suitable using the matching data.

When verifying whether the guide is suitable, the controller 14 may verify whether the guide is suitable based on the guide area of the two data on the matching data. An embodiment thereof will be described later with reference to FIG. 15 . The control unit 14 may provide error information about the guide position and direction when a guide fit error occurs when verifying whether the guide is fit or not.

Furthermore, the control unit 14 provides an image screen that compares the position information of the implanted fixture with the position information of the fixture that is expected to be implanted when establishing an implantation plan using the conformity verification result to predict the result after the guide surgery in advance. An embodiment thereof will be described later with reference to FIG. 17 .

The control unit 14 may acquire secondary oral data by scanning only the upright structure 　 area actually required for verification from the oral cavity of the patient who has engaged the guide in the oral cavity, and use this as data for verification. An embodiment thereof will be described later with reference to FIG. 11 . In addition, when the registration is completed, the control unit 14 uses the guide shape designed for the secondary oral data in which the partial area is scanned around the upright structure to virtually create the overall shape of the guide, and whether the guide is suitable can be verified. An embodiment thereof will be described later with reference to FIG. 13 .

The input unit 16 receives a user manipulation signal. The output unit 18 displays various types of information on the screen. The output unit 18 may display the generated guide design data and data for verification on the screen. In addition, information necessary for verifying whether the guide is appropriate may be displayed on the screen, and the guide compliance verification result may be displayed on the screen. Furthermore, a position comparison result obtained by comparing the position of the fixture on the guide design data and the position of the fixture on the data for verification may be displayed on the screen.

The storage unit 12 stores various data such as information necessary for performing the operation of the guide verification device 1 and information generated according to the operation. Guide design data and verification data of individual patients are stored in the storage unit 12 according to an embodiment, and may be provided to the control unit 14 according to a user's request.

2 is a diagram illustrating a flow of a guide verification method for implant surgery according to an embodiment of the present invention.

1 and 2, the guide verification device 1 implants an erect structure in the patient's oral cavity, and acquires image data including the erected erect structure (S21). The image data may include at least one of CT data and oral data of the patient, and may be used for designing a guide for implant surgery. The oral data may be dental model scan data obtained by scanning a plaster model created by imitating a patient's oral cavity with a 3D scanner. Alternatively, it may be impression body scan data obtained by scanning the impression body imitating the patient's oral cavity with a 3D scanner. As another example, it may be oral scan data obtained by directly scanning the inside of the patient's oral cavity using a 3D intra-oral scanner. CT data may be acquired by performing CT imaging in the same manner as in a general imaging method of a patient for guide design.

Then, the guide verification apparatus 1 designs the guide according to the patient's surgical plan from the obtained image data to generate the guide design data and outputs it (S22). For example, the guide verification apparatus 1 designs a guide area including an upright structure, and generates guide design data including the designed guide area. The guide area can be designed manually by the user, or it can be designed in an automatic way using software algorithms and user setting information.

The guide design data includes oral data obtained from the patient's oral cavity (this is referred to as 'first oral data'), objects such as fixtures used to establish a surgical plan, an upright structure object, and a guide shape designed according to the surgical plan Each of these may be configured in the form of individual data. An example of the guide design data will be described later with reference to FIG. 9 .

The guide verification device 1 stores the designed guide design data in the form of data that can be output as a final result (eg, 3D data in STL format), and outputs it using a 3D printer or milling equipment. can be finalized.

Subsequently, the guide verification device 1 acquires verification data from the patient's oral cavity after fastening the guide in the patient's oral cavity (S23). For example, the guide verification device 1 fastens the guide in the patient's mouth for implant surgery, and additionally acquires oral data, which is verification data, for guide conformity verification. The method of fastening the guide in the patient's oral cavity may be fastened using an upright structure placed in the patient's oral cavity. Since the guide hole to which the upright structure is fastened is included in the surgical guide, the guide is fastened so that the upright structure is positioned at the guide hole position.

When the guide is fastened in the patient's oral cavity, oral data obtained by scanning the guide fastened in the oral cavity is acquired to verify the conformity of the guide, and the data at this time is referred to as 'secondary oral data'.

Next, the guide verification apparatus 1 matches the guide design data and the verification data to verify whether the guide is suitable (S24). For example, the secondary oral data, which is verification data obtained by scanning the intraoral guide of a patient, and the guide design data that designed the implant surgery plan and guide are matched using software. In this case, basically, the software recognizes the shape of the upright structure, and the two data can be automatically matched based on the recognized upright structure. Alternatively, two data may be matched based on a matching point arbitrarily input by the user. An example of matching between two data will be described later with reference to FIGS. 12 and 14 .

Next, the guide verification apparatus 1 verifies whether the guide is suitable using the matching data and provides a verification result (S25). The guide conformity verification result screen will be described later with reference to FIG. 15 .

Subsequently, the guide verification apparatus 1 may compare the position of the fixture designed on the guide design data with the position of the fixture virtually implanted in the data for verification to provide a position comparison result screen between the fixtures (S26). The guide conformity verification result screen and the location comparison result screen between fixtures can be simultaneously provided through a single screen. The position comparison result screen between the fixtures will be described later with reference to FIG. 17 .

3 is a view illustrating a patient case requiring erection of an upright structure according to an embodiment of the present invention.

1 and 3 , the guide verification device 1 implants an upright structure in the patient's mouth before acquiring the patient's image data (eg, CT data and oral data).

The upright structure is a physical structure that is placed in the oral cavity of a patient. In the upright structure, when the guide for implant surgery is attached to the patient's oral cavity, as shown in FIG. 3, the flow of the guide may occur in the patient case (a) or the edentulous case (b) in which a number of teeth are continuously extracted. If there is, it is used for fixing it.

When the upright structure is installed, the generally used anchor pin installation process can be omitted. In addition, the 　 erected 　 erect structure can be used as a standard for verifying the fit of the guide during the implant surgery process of the patient.

4 and 5 are views showing an example of erection structure according to various embodiments of the present invention.

4 and 5, since the upright structure is placed before the surgical planning stage to determine the placement position of the fixture, the upright structure is placed at a position that does not affect the fixture placement position. For example, as shown in FIG. 4 , the upright structure 40 may be implanted in the space between the fixture implantation expected regions 42-1 and 42-2 where the fixture is expected to be implanted. As another example, as shown in FIG. 5 , the upright structure 40 may be implanted in the tooth number area 50 where the fixture is not placed.

6 is a view showing the shape of an upright structure according to an embodiment of the present invention.

1 and 6 , the guide verification device 1 acquires the patient's image data in a state in which the erect structure 40 is implanted in the patient's oral cavity. The image data may be, for example, CT data, oral data, or the like.

As shown in FIG. 6, the upright structure 40 may be a separate type in which the scan body 42 and the implant body 44 are separated, and the scan body 42 and the implant body 44 are separated. It can also be used as an integrated type.

The upright structure 40 may be constructed of a material that minimizes CT artifacts. For example, the scan body 42 may be made of a radiopaque material.

7 is a view showing an example of an image for implanting a fixture in consideration of the placement position of the upright structure according to an embodiment of the present invention.

Referring to FIGS. 1 and 7 , the guide verification device 1 maintains the state in which the upright structure 40 is fastened in the oral cavity of the patient when CT and scan for obtaining patient data are completed. Afterwards, the upright structure 40 may be used for the purpose of verifying suitability in the surgical process.

The guide verification device 1 establishes a surgical plan and designs the surgical guide for the operation using the guide for implant surgery. For example, the guide verification device 1 loads the patient's CT data and the oral model data to implant a virtual crown and fixture. At this time, since the upright structure 40 that has been placed in advance is expressed in the CT data, it is possible to determine the placement positions of the fixtures 70-1 and 70-2 as shown in FIG. 7 in consideration of this. Since the upright structure 40 is implanted to secure the fixing force of the guide, the anchor pin is not installed by default, but the user can selectively implant the anchor pin. The implant structure including the fixtures 70-1 and 70-2, the user can manually determine the location and specifications, and can determine the position and specifications in an automatic manner using the algorithm and user setting information of the software 　.

8 is a diagram illustrating an example of an image for generating a fixture drilling hole and an upright structure binding hole according to an embodiment of the present invention.

1 and 8 , the guide verification device 1 generates a guide region based on the implanted fixtures 70-1 and 70-2 and the patient's anatomical structure when the implantation plan is completed. do. At this time, if the upright structure fastening hole 82 to which the upright structure is attached and the fixture drilling holes 80-1 and 80-2 generated as the fixture reference axis overlap each other, drilling is impossible, so that they do not overlap.

Since the overlapping area is wide, when drilling is impossible in the fixture drilling holes 80-1 and 80-2, a warning message may be output so that the user can recognize this. In general, the guide area is created based on the oral data, and since the upright structure is implanted in the oral data during the patient's data acquisition process, the upright structure binding hole 82 is also the fixture drilling hole 80-1, 80-2. In the same way, it can be created in software.

9 is a view showing guide design data according to an embodiment of the present invention.

Referring to FIG. 9 , the guide design data 90 is a guide shape designed in a surgical planning process. (a) is a data image expressing only the guide shape, and (b) is a data image including an upright structure and an object 40-1 in a guide shape object. The guide shape includes a fixture drilling hole 80-1 and an upright structure fixing hole 82-1.

10 is a view showing secondary oral data used as data for verification according to an embodiment of the present invention.

Referring to FIG. 10 , the secondary oral data used as data for verification is a guide shape obtained by scanning the oral cavity after the guide is fastened. (a) is a data image expressing only the guide shape, (b) is a data image including the upright structure object 40-2 in the guide shape object. In fact, the scan result image includes data in the form of an erect structure implanted as shown in 　(b). The guide shape includes a fixture drilling hole 80-2 and an upright structure fixing hole 82-2.

11 is a view showing secondary oral data obtained by scanning only the upright structure area according to an embodiment of the present invention.

1 and 11, the guide verification device 1 scans only the 　 erect structure 　 area, which is the data area actually required for verification, in the oral cavity of the patient to which the patient has entered the guide in the oral cavity to obtain secondary oral data ( 100), it can be used as data for verification. Reference numeral 110 shows data obtained when scanning the entire area 110 to which the intraoral guide is fastened.

12 is a diagram illustrating a data loading screen for matching guide design data and verification data according to an embodiment of the present invention.

1 and 12 , the guide verification device 1 loads the guide design data 90 and verification data for data matching. Guide design data 90 is data that planned implant surgery and designed guides, and objects used in surgery planning including 　 1st oral data, guide shape, and 　 fixtures, upright structure objects, etc. are in individual data form. . Data for verification is secondary oral data 100 obtained by performing oral scanning with the guide fastened to the patient's oral cavity, and is composed of a single oral data format.

13 is a view showing an example of virtually creating the overall shape of the guide of the secondary oral data according to an embodiment of the present invention.

Referring to FIGS. 1 and 13 , the secondary oral data 100 as data for verification may not scan the entire guide shape in the scan process. Therefore, when matching is completed, the guide verification device 1 virtually creates the overall shape 130 of the guide using the designed guide shape, and then it can be reproduced as a complete guide shape as shown in FIG. 13 .

14 is a diagram illustrating an example of inputting a matching point for data matching according to an embodiment of the present invention.

Referring to FIGS. 1 and 14 , the guide verification device 1 performs data matching based on the input matching points by inputting one or more matching points 140 by the user when the automatic matching is not performed. The guide verification device 1 aligns the guide positions of the guide design data 90 and the secondary oral data 100 based on the registration point 140, and final registration using the guide shape information around the registration point 140 can do. The mating point 140 may be a guide structure location.

15 is a diagram illustrating a screen for providing a data matching result according to an embodiment of the present invention.

1 and 15 , the guide verification apparatus 1 provides a result screen of matching two guides. At this time, as shown in FIG. 15 , the matching result may be expressed in a 3D shape. Alternatively, it can be expressed as a 2D cross-sectional image by using the cross-sectional information of each data. As data for verification, the guide shape of the secondary oral data may be virtually created using the guide shape information designed as described above with reference to FIG. 13 . If an error occurs in the result of matching the shape of two guides, error information can be provided on the screen. In this case, as shown in FIG. 15 , the error information may be expressed as numerical information. For example, as in reference numeral 150, the guide matching error 150 between the margin line 152 of the guide shape of the secondary oral data and the guide shape 154 of the guide design data is digitized and displayed on the screen.

16 is a diagram illustrating an image in which the fixture positions of guide design data and verification data are compared according to an embodiment of the present invention.

1 and 16, the position and direction of the fixture 160 implanted in the guide design data 90 during the surgical planning process, and the fixture 162 that is virtually created in the secondary oral data 100 to be implanted. ) position and orientation can be compared.

The fixtures 160 planned for surgery are managed as separate objects, so that each fixture can be managed as separate 3D shape data.

The secondary oral data 100 is composed of a virtual entire shape of the guide, and the guide verification device 1 recognizes the fixture center point as shown in FIG. 16 by using the position information of each drilling hole of the guide. The center point of the fixture may be defined as the uppermost center point 166 of the fixture. Based on this information, a virtual fixture 162 for verification is generated using distance information from the fixture drilling hole center point 164 to the fixture top center point 166 set. 16 exemplifies a case where the distance between the fixture drilling hole center point 164 and the fixture top center point 166 is 10.5 mm, and this information may differ depending on each manufacturer.

17 is a diagram illustrating a video screen for comparing two fixture positions according to an embodiment of the present invention.

Referring to FIGS. 1 and 17 , the guide verification device 1 compares the position between the surgically planned fixture 160 and the virtual fixture 162 expected to be implanted in the secondary scan process for guide verification. As shown in FIG. 17, the reference fixture for comparison is a surgically planned fixture 160, and the user can check the expected error by expressing the position difference and depth information of each center point using the uppermost center point and the lowermost center point of the fixture. make it possible In the example of FIG. 17 , an error of 0.04 mm occurs at the uppermost center point between the surgically planned fixture 160 and the virtual fixture 162 for verification, and an error of 0.03 mm occurs at the lowermost center point, and the depth is 0.04 It can be seen that an error of mm occurs. As shown in FIG. 17 , it is possible to provide the fixture position comparison results on the AA (Arch Axis) cross-section, MA (Mesio-Distal Axis) cross-section, and BA (Bucco-Lingual Axis) cross-section. Cross-section creation may differ depending on the software used, and cross-sectional images such as Axial, Sagittal, Coronal, Cross, Parallel, Panoramic, etc. provided by general medical and dental image viewers or guide design software are positioned in the same way. Comparison information can be provided.

18 is a diagram illustrating an example of providing a fit result verification screen and a fixture position comparison screen together according to an embodiment of the present invention.

Referring to FIGS. 1 and 18 , the guide verification apparatus 1 may express the conformity confirmation result screen 181 and the fixture position comparison screen 182 as one screen.

So far, the present invention has been looked at focusing on the embodiments thereof. Those of ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in modified forms without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated 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 (15)

In the guide verification method for implant surgery using the guide verification device for implant surgery, the guide verification device for implant surgery
Acquiring image data including the erect structure placed after the erection structure in the oral cavity of the patient;
generating guide design data in which a guide area is designed according to a patient's surgical plan from the acquired image data and outputting it;
generating data for verification from the patient's oral cavity after the guide is engaged in the patient's oral cavity;
matching guide design data and verification data based on the upright structure; and
verifying whether the guide is suitable using the matching data and providing a verification result;
Guide verification method for implant surgery, characterized in that it comprises a. The method of claim 1, wherein the acquiring image data including an upright structure comprises:
A guide verification method for implant surgery, characterized in that the upright structure is placed in the space between the areas where the fixture is expected to be placed, or the upright structure is placed in the tooth number area where the fixture is not placed. The method of claim 1,
The guide design data consists of the first oral data obtained from the patient's oral cavity, the object used for establishing the surgical plan, the upright structure object, and the guide shape designed according to the surgical plan in the form of individual data,
The verification data is a guide verification method for implant surgery, characterized in that the second oral data obtained from the oral cavity in a state in which the guide is fastened to the patient's oral cavity is configured in a single form. According to claim 1, wherein the step of generating the guide design data and outputting it
Implanting an implant structure including a fixture in the image data, and determining the location of the fixture drilling hole so that the upright structure fastening hole to which the upright structure is attached and the fixture drilling hole generated by the fixture reference axis do not overlap with each other; and
outputting a warning message when drilling is impossible in the fixture drilling hole due to overlap with the upright structure binding hole;
Guide verification method for implant surgery, characterized in that it comprises a. The method of claim 1, wherein the generating of data for verification comprises:
A guide verification method for implant surgery, characterized in that the secondary oral data is obtained by scanning only the upright structure area actually required for verification from the oral cavity of the patient who has entered the guide in the oral cavity, and used as the verification data. According to claim 1, wherein the step of matching the guide design data and the data for verification
automatically matching the guide position of the guide design data and the guide position of the verification data using the upright structure as the matching point; and
aligning the guide positions of the guide design data and the verification data based on the matching point input by the user in the case of not automatic registration, and final matching using guide shape information around the matching point;
Guide verification method for implant surgery, characterized in that it comprises a. The method of claim 1 , wherein the step of verifying whether the guide is suitable using matching data and providing a verification result comprises:
When the registration is completed, the overall shape of the guide is virtually created using the guide shape designed for the secondary oral data in which the partial area is scanned around the upright structure, and then the conformity of the guide is verified. Guide verification method for implant surgery. The method of claim 1 , wherein the step of verifying whether the guide is suitable using matching data and providing a verification result comprises:
Comparing the guide area of the matched guide design data and the guide area of the verification data to verify whether the guide is suitable; and
providing guide error information when a guide fit error occurs;
Guide verification method for implant surgery, characterized in that it comprises a. According to claim 1, wherein the guide verification method for implant surgery
estimating the location information of the fixture to be implanted on the verification data; and
Predicting the results after guide surgery by comparing the position information of the fixtures implanted on the guide design data with the position information of the fixtures that are expected to be implanted on the verification data to provide a position comparison result;
Guide verification method for implant surgery, characterized in that it further comprises. The method of claim 9, wherein the step of estimating the location information of the fixture to be implanted on the verification data
Recognizing a fixture center point using the location information of the fixture drilling hole on the verification data; and
generating a virtual fixture for verification by using distance information from the center point of the fixture drilling hole to the center point of the fixture;
Guide verification method for implant surgery, characterized in that it comprises a. Data acquisition unit for acquiring image data including the erect structure after the erection of the erect structure in the oral cavity of the patient;
From the acquired image data, it generates guide design data in which the guide area is designed according to the patient's surgical plan, and after the guide is fastened in the patient's mouth, verification data is generated from the patient's mouth, and guide design based on the upright structure After matching the data and the verification data, the control unit verifies whether the guide is suitable by using the matching data; and
an output unit for displaying the generated guide design data, data for verification, and verification results;
Guide verification device for implant surgery, characterized in that it comprises a. 12. The method of claim 11, wherein the data acquisition unit
A guide verification device for implant surgery, characterized in that it acquires image data including an upright structure placed in the space between the expected fixture placement areas where fixtures are expected to be placed, or placed in the tooth number area where fixtures are not placed. The method of claim 11, wherein the control unit
Secondary oral data is obtained by scanning only the upright structure area actually required for verification from the oral cavity of the patient who has entered the guide in the oral cavity, and this is used as data for verification.
When the registration is completed, the overall shape of the guide is virtually created using the guide shape designed for the secondary oral data in which the partial area is scanned around the upright structure, and then the conformity of the guide is verified. Guide verification device for implant surgery. The method of claim 11, wherein the control unit
A guide verification device for implant surgery, characterized in that it compares the guide area of the matched guide design data and the guide area of the verification data to verify whether the guide is suitable, and provides guide error information when a guide fit error occurs. The method of claim 11, wherein the control unit
Estimate the location information of the fixture that is expected to be placed on the verification data, and compare the location information of the fixture placed on the guide design data with the location information of the fixture that is expected to be placed on the verification data to provide the location comparison result. Guide verification device for implant surgery, characterized in that it predicts the result after guide surgery according to the guide.

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