KR102350098B1 - Method for generating arch line and dental image processing apparatus therefor - Google Patents

Abstract

Disclosed are an arch line generating method and a dental image processing device therefor. According to an embodiment, the arch line generating method determines a gum plane and generates an arch line on a cross-sectional image of the determined gum plane to determine implantation information of an implant structure including the fixture by using information on a tooth number to be operated on and the arch line.

Description

Method for generating arch line and dental image processing apparatus therefor

The present invention relates to a dental image processing technology, and more particularly, to a technology for generating a jaw line in a dental image.

To establish an implant surgery plan using software or to design a surgical guide, the patient's CT data and scan data are matched, the arch line is created, and the implant structure including the fixture is determined based on the registration data. In particular, the arch line can be used not only as a reference line for creating a panoramic image and a cross-sectional image using it, but also as a reference position for placing a virtual crown and placing a fixture.

According to an embodiment, a method for generating an arch line that can be used to automatically generate a jaw line and establish a surgical plan, and a dental image processing apparatus for the method are proposed.

A method for generating a jaw line using a dental image processing apparatus according to an embodiment includes the steps of: matching, by the dental image processing apparatus, CT data and scan data of a patient; determining a gum plane using the matched data; It includes the steps of generating an arch line in the cross-sectional image of the gum plane, and determining the placement information of the implant structure including the fixture by using the tooth number information to be operated and the arch line.

The step of determining the gum plane includes the steps of determining the positions of the maxilla and the mandible of the matched data, and determining the section of the cross-section image in which the alveolar bone margin line is expressed for each of the determined maxilla and mandible as the gum plane. can

The step of determining the gum plane may further include determining the final gum plane by correcting the determined gum plane according to the type of fixture.

The step of determining the final gum plane may include the steps of confirming the position at which the fixture will be placed according to the type of the fixture, and determining the final gum plane on which the arch line will be created based on the location at which the fixture will be placed. .

The step of determining the final gum plane further includes the step of loading the fixture type of the tooth number to be operated using 　default 　 information of the library, and the type of fixture for each tooth number can be set and changed by the user.

The generating of the jaw line may include detecting a margin line of the alveolar bone region from the determined cross-sectional image of the gum plane, and generating an arch-shaped line based on the detected alveolar bone margin line.

The generating the arch line may further include reconstructing the arch-shaped line by connecting the outermost line in the Lingual direction to the Buccal for the created arch-shaped line.

The step of generating the arch line includes the steps of setting vertical lines for each predetermined area constituting the alveolar bone area in the created arch-shaped line, and setting the center point of each set line as the arch line creation point; , may further include generating the arch line by connecting the arch line generation points of each region.

In the step of generating the arch line, the arch line created on the cross-sectional image of the gum plane may be determined as a reference line on which the fixture is placed.

The arch line generation method further includes the step of detecting the tooth division area by tooth number through tooth division, and in the step of determining the placement information of the implant structure, using the tooth division result, the tooth number information to be operated and the arch line It is possible to determine fixture placement information.

In the step of determining the placement information of the implant structure, a predetermined center point corresponding to the central axis of the fixture is located at the arch line creation point corresponding to the center point of the arch-shaped line created using the alveolar bone in the determined cross-sectional image of the gum plane, The fixture placement position can be determined so that the fixture is located at the center position of the tooth division area of the tooth number to be operated on.

The predetermined central point corresponding to the central axis of the fixture may be an uppermost central point of the fixture.

The method for generating the arch line may further include a step of correcting the fixture placement information using a function provided by the software or fine-tuning the user using a manipulator.

A dental image processing apparatus according to another embodiment includes a data acquisition unit acquiring CT data and scan data of a patient to be matched, and matching the acquired CT data and scan data, and determining a gum plane using the matched data After creating an arch line on the cross-sectional image of the determined gum plane, the control unit determines the implantation information including the fixture by using the tooth number information to be operated and the arch line, and displays the created arch line and places it on the arch line. It includes an output unit for displaying the fixture placement information.

According to a method for generating a jaw line according to an embodiment and a dental image processing apparatus therefor, a gum plane on which a jaw line is to be generated is determined as a reference line for fixture implantation, It can be used to establish a surgical plan by automatically creating a line.

By determining the gum plane according to the type of fixture and creating the arch line on the determined gum plane, it can be used as information for automatic placement of fixtures and crowns while increasing the accuracy of the placement position of the implant structure. In addition, the arch line can be used as a reference line for determining the area of the guide for implant surgery that is finally created.

1 is a view showing the configuration of a dental image processing apparatus according to an embodiment of the present invention;
2 is a view showing a flow of a method for generating an arch line according to an embodiment of the present invention;
3 is a view showing the state of initially acquired CT data and scan data according to an embodiment of the present invention;
4 is a view showing a result of matching two data based on a coordinate axis of CT data according to an embodiment of the present invention;
5 is a diagram illustrating an example of inputting a matching point for data matching according to an embodiment of the present invention;
6 is a view showing a cross-sectional image generated according to a cross-sectional position of CT data according to an embodiment of the present invention;
7 is a view showing an example of determining the final gum plane according to the type of fixture according to an embodiment of the present invention;
8 is a view showing a fixture specification definition screen for each tooth number through user setting according to an embodiment of the present invention;
9 is a view showing a screen for generating an arch line in a cross-sectional image of the gum plane using the alveolar bone region when the patient is a dendritic jaw according to an embodiment of the present invention;
10 is a view showing a screen for generating a maxillary arch line based on an arch-shaped line created using alveolar bone when the patient is a dendritic jaw according to an embodiment of the present invention;
11 is a view showing a screen for generating an arch-shaped line in a cross-sectional image of the gum plane using an alveolar bone margin line when the patient is edentulous according to an embodiment of the present invention;
12 is a view showing a screen for generating a maxillary arch line based on an arch-shaped line created using alveolar bone in the case of an edentulous patient according to an embodiment of the present invention;
13 is a view showing a tooth division screen using CT data according to an embodiment of the present invention;
14 is a diagram illustrating a screen for determining a fixture placement position using a tooth division result and an arch line 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 computer program instructions 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 that 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 diagram showing the configuration of a dental image processing apparatus according to an embodiment of the present invention.

The dental image processing apparatus 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. Medical image processing programs include guide design programs, scan programs, and CAD 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, it is of course applicable to other programs as well.

Although the image processing process using a medical image processing program is different for each commercialized product, surgery patient registration, CT data and scan data acquisition of the registered patient, CT data and scan data registration, arch line creation from the registered image data, and It consists of a process including creation of a panoramic image using the arch line, determination of the placement position of the implant structure including fixtures from CT data, determination of the position of the crown model from scan data, determination of the guide generation area, and final guide output. .

The present invention relates to a technique for determining the placement of an implant structure using the arch line generated during the above process and the created arch line.

Referring to FIG. 1 , a dental image processing 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 two image data to be matched. For example, CT data and scan data are acquired from teeth including a damaged target tooth of a patient. The image data may be in the form of 2D or 3D. The data acquisition unit 10 executes the CT data and the scan data in software or loads the data stored in a web page and a server in order to match the patient's CT data and the scan data.

The scan data is data having information on actual teeth including damaged teeth. The scan 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. As another example, it may be oral scan data obtained by scanning the inside of the patient's mouth using a 3D intra-oral scanner. The acquired scan data may be stored in the storage unit 12 .

CT data may be obtained by generating tomographic images of the patient's head using computed tomography (CT), segmenting the tooth boundaries in each tomography image, and combining them into one. These scan data and CT data are images obtained by imaging the maxillary teeth under the maxillary teeth with the patient’s mouth open, images obtained by imaging the mandibular teeth above the mandibular teeth with the patient’s mouth open, and local area imaging with the mouth closed. images, oral radiographs, etc. The acquired CT data may be stored in the storage unit 12 .

The storage unit 12 stores various data such as information necessary for performing the operation of the dental image processing apparatus 1 and information generated according to the operation. The storage unit 12 according to an embodiment stores scan data and CT data of individual patients, and controls the scan data and CT data of a specific patient from among all scan data and CT data during dental treatment simulation according to a user's request. (14) can be provided. At this time, the storage unit 12 stores the image of the upper and lower teeth of an individual patient, and the image of the upper and lower teeth matching the scan data and CT data of a specific patient is displayed in response to a user's request. It may be provided to the control unit 14 .

The input unit 16 receives a user manipulation signal. For example, the input unit 16 may receive a matching point for matching or re-matching from a user. Also, it is possible to receive a user manipulation signal from the user for the matching result. For example, a user manipulation signal through a manipulator may be input.

The control unit 14 controls each component through control by a computer program. The controller 14 may manage screen information displayed on the screen through the output unit 18 and perform a simulation of implanting a virtual fixture object in a dental image. A dental image in which a virtual fixture object is placed means a multidimensional image such as 2D, 3D, etc. in which a patient's tooth arrangement is generated for establishing an implant treatment plan. Various types of images, such as X-ray, CT, MRI, panoramic image, oral scan image, image generated through reconstruction, and image obtained by matching multiple images, can be used for implant operation planning.

The control unit 14 according to an embodiment matches the CT data and scan data of the patient acquired through the data acquisition unit 10 to establish an implant placement plan. Then, using the matched data, the gum plane on which the maxillary arch line will be created is determined, and the dental arch line is created on the cross-sectional image of the determined gum plane. to decide

For example, the control unit 14 may determine a gum plane in which the arch line is to be generated based on the position at which the fixture is to be placed, and generate the arch line so as to pass the center point of the fixture on the determined gum plane. By determining the created arch line as the reference line where the fixture is placed, it can be used as information for automatic placement of the fixture and crown. In addition, the arch line can be used as a reference line for determining the area of the guide for implant surgery that is finally created.

The output unit 18 displays various types of information on the screen. For example, the output unit 18 may display the data matching result on the screen. The output unit 18 may display the generated arch line and display fixture placement information on the arch line. The output unit 18 may display a manipulator for facilitating user manipulation.

2 is a diagram illustrating a flow of a method for generating an arch line according to an embodiment of the present invention.

Referring to FIG. 2 , the dental image processing apparatus matches the CT data and scan data of the patient for establishing a surgical plan on software (S210). The registration between the image data is to define the gum plane determined from the CT data and the scan data identically, so that the arch line generated on the gum plane can be created at a different location in each data according to the matching result. There are two types of registration between the two image data: a manual registration method through user designation of a registration point, an automatic registration method using a software algorithm, or a combination thereof.

Next, the dental image processing apparatus determines the gum plane on which the arch line is to be generated using the matched image data (S220). To this end, the position of the maxilla and the mandible of the matched data may be determined, and a section of the sectional image in which the alveolar bone margin line is expressed for each of the determined positions of the maxilla and the mandible may be determined as the gum plane. Here, the matched data may be used to establish an implant placement surgery plan and design a guide for implant surgery. The dental image processing apparatus may further determine the final gum plane by correcting the determined gum plane according to the type of fixture. When determining the final gum plane, the position at which the fixture will be placed may be checked according to the type of the fixture, and the final gum plane on which the arch line will be generated may be determined based on the location where the fixture will be placed. The type of fixture can be loaded using the default information of the library. In addition, the type of fixture for each tooth number can be set and changed by the user.

Next, the dental image processing apparatus generates a jaw line in the cross-sectional image of the determined gingival plane (S230). In the jaw line generation step (S230), the dental image processing apparatus may detect a margin line of the alveolar bone region from the determined cross-sectional image of the gum plane, and generate an arch-shaped line based on the detected alveolar bone margin line. Next, the arch-shaped line is reconstructed by connecting the outermost line in the Lingual direction to the Buccal for the created arch-shaped line. Next, a vertical line is set for each predetermined region constituting the alveolar bone region on the reconstructed arch-shaped line, the center point of each set line is set as the arch line creation point, and then the arch line creation point of each region is set. You can create an arch line by connecting them. An embodiment thereof will be described later with reference to FIGS. 9 and 10 .

Next, the dental image processing apparatus determines the implantation information including the fixture by using the tooth number information to be operated and the arch line (S240). For example, the fixture placement position may be determined so that the central axis of the fixture is positioned at the arch line creation point corresponding to the center point of the arch-shaped line generated using the alveolar bone in the determined cross-sectional image of the gum plane.

The dental image processing apparatus according to an embodiment may determine placement information of the implant structure by using tooth segmentation. For example, tooth segmentation by tooth number is detected through tooth segmentation. And, in the implantation information determination step (S240) of the implant structure, it is possible to determine the fixture placement position so that the fixture is located at the center position of the tooth division area of the tooth number to be operated.

Furthermore, the dental image processing apparatus may correct the fixture placement information by using a function provided by the user's fine adjustment 　 or 　 software using a manipulator.

FIG. 3 is a diagram illustrating states of initially acquired CT data and scan data according to an embodiment of the present invention.

More specifically, (a) is a diagram showing an initial acquisition state of the CT data 31, (b) is a diagram showing an initial acquisition state of the scan data 32, (c) is a diagram showing the CT data and scan It is a diagram showing an initial acquisition state of data.

Referring to FIG. 3 , when CT data and scan data of a patient are initially acquired, coordinate information of the two data does not match as shown in FIG. 3C .

4 is a diagram illustrating a result of matching two data based on a coordinate axis of CT data according to an embodiment of the present invention.

Referring to FIG. 4 , the dental image processing apparatus matches the CT data 31 and the scan data 32 of the patient for establishing a surgical plan on software. For example, in order to match the CT data 31 and the scan data 32, as the position and direction of the scan data 32 are moved based on the CT data 31 having coordinate information, the CT data 31 ) can be matched with the coordinates of In general, the CT data 31 is used as a reference coordinate, but the coordinate axis of the CT data 31 may be changed based on the scan data 32 to match the coordinates of the scan data 32 .

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

Referring to FIG. 5 , the dental image processing apparatus receives three or more matching points for each data 31 and 32 from a user to match the CT data 31 and the scan data 32, and the input matching points Data can be matched based on For example, matching points of the front and both sides of each data 31 and 32 may be input. 5 shows the registration points 310 and 320 in the front direction. Automatic registration is also possible by using a software algorithm to automatically detect an area having the same shape without the user inputting a matching point.

6 is a diagram illustrating a cross-sectional image generated according to a cross-sectional position of CT data according to an embodiment of the present invention.

More specifically, (a) is a cross-sectional image 61-2 in which only teeth generated at the first cross-sectional position 61-1 of the CT data are expressed, and (b) is a second cross-sectional position 62- of the CT data. It is a cross-sectional image 62-2 in which the tooth root and alveolar bone generated in 1) are expressed, and (c) is a cross-sectional image 63-2 in which only the alveolar bone generated in the third cross-sectional position 63-1 of the CT data is expressed. )to be.

Referring to FIG. 6 , the dental image processing apparatus determines a gum plane on which a jaw line is to be generated by using the matched image. Depending on the patient's tooth number to be operated on, the arch line can be created differently in the upper and lower jaws, and the gum plane is also created differently.

When determining the position of the maxilla and mandible, the area matching the maxilla of the scan data can be determined as the upper jaw of the CT data, and the area matching the mandible and the mandible of the scan data can be determined as the mandible of the CT data. The surgical tooth number information may be defined by a user selected or linked with other products such as a patient management program.

When the positions of the maxilla and the mandible are determined, the dental image processing apparatus may determine the gum plane on the CT data. Referring to FIG. 6 , the alveolar bone region may be detected using information about the density of the image on the CT data. In the case of the maxilla, while moving the CT data section from the occlusal surface to the tooth root, a cross-sectional image in which the alveolar bone is expressed is detected past the tooth area and the gum area. In FIG. 6 , the lower images show the cross-sectional positions of the CT data, and the upper images show the cross-sectional images formed at the cross-sectional positions of the CT data.

The dental image processing apparatus may determine the cross-section 62-1 of the cross-sectional image 62-2 in which the alveolar bone margin line 600 is expressed as the initial gum plane. In the same way, in the case of the mandible, a cross-sectional image in which alveolar bone is expressed passing through the tooth and gum regions is detected, and at this time, the cross-section of the cross-sectional image in which the alveolar bone margin line is expressed may be determined as the initial gum plane.

7 is a view showing an example of determining the final gum plane according to the type of fixture according to an embodiment of the present invention.

Referring to FIG. 7 , the dental image processing apparatus may determine the final gum plane 740 by correcting the bone-level 730 according to the type of the fixture 700 . Depending on the type of the fixture 700, the fixture 700 is placed below the alveolar bone 710, or the fixture 700 is placed according to the height of the alveolar bone 700, or the fixture ( 700) can be implanted.

The dental image processing apparatus may determine the position at which the fixture 700 will be placed according to the type of the fixture 700 and determine the final gum plane 740 on which the arch line will be generated based on the location at which the fixture will be placed. For example, in the case of the fixture 700 to be implanted 1 mm below the alveolar bone 710 as shown in (a), the initial gum plane (gum plane generated based on the alveolar bone) as shown in (b). In (Bone-level) 730 , it is possible to determine a cross-section generated below 1 mm in the direction of the tooth root as the final gum plane 740 . Thereafter, the position of the fixture 700 may be determined so that the uppermost end of the fixture 700 is formed at the position of the final gum plane 740 .

8 is a diagram illustrating a fixture specification definition screen for each tooth number through user setting according to an embodiment of the present invention.

The dental image processing apparatus loads a fixture type (eg, a fixture system) of a tooth number to be operated by using the default information of the library. The type of fixture may be changed by the user. As shown in FIG. 8, fixtures frequently used by the user in the library of implant structures can be set for each tooth number, and 　basically, preset fixture specifications are loaded as 　default. The final gum plane can be determined based on the type of fixture loaded in this way.

9 is a diagram illustrating a screen for generating an arch line in a cross-sectional image of a plane of the gums using an alveolar bone region when the patient is a denture according to an embodiment of the present invention.

More specifically, (a) is a view showing a screen for detecting an alveolar bone margin line in a cross-sectional image of the gum plane, (b) is a view showing a screen for generating an arch-shaped line.

Referring to FIG. 9 , the dental image processing apparatus generates a jaw line on the determined cross-sectional image of the final gum plane. To this end, the dental image processing apparatus detects the margin line 910 of the alveolar bone area used to determine the gum plane on the cross-sectional image of the final gum plane determined as shown in (a). Then, as shown in (b), the dental image processing apparatus connects the detected alveolar bone margin lines 910 to generate an arch-shaped line. Since the alveolar bone margin line 910 may not have a natural arch shape as shown in (a) for reasons such as tooth extraction, it is shown in (b) by connecting the outermost line in the direction of Buccal (buccal) and Lingual (lingual). It can be reconstructed into a natural arch-shaped line 920 as described above.

10 is a diagram illustrating a screen for generating a maxillary arch line based on an arch-shaped line created using alveolar bone when the patient is a denture jaw according to an embodiment of the present invention.

More specifically, (a) is a diagram illustrating a screen for detecting a arch line generation point, and (b) is a diagram illustrating a screen for generating an arch line using the arch line generation point.

Referring to FIG. 10 , the 'arc-shaped line connecting the alveolar bone margin line' as described above with reference to FIG. 9 roughly corresponds to the outermost line in the Lingual-Buccal direction of the tooth. Accordingly, a line 1010 that is perpendicular to each predetermined region constituting the alveolar bone region is set in the arch-shaped line 920 as shown in (a), and the center point of each line 1010 is created as a maxillary arch line. Point 1020 is set. Specifically, when each tooth number area including the tooth number area to be implanted is divided and the central axis of the tooth number area is created, a line located at the shortest distance in the Lingual-Buccal direction from the arch shape area can be created. have. That is, the arch line is created to be perpendicular to the line passing through the central axis of the divided box (region).

Then, the dental image processing apparatus connects the arch line generation points 1020 of each area to generate the arch line 1030 as shown in (b).

11 is a view showing a screen for generating an arch-shaped line in a cross-sectional image of the gum plane using the alveolar bone margin line when the patient is edentulous according to an embodiment of the present invention.

More specifically, (a) is a view showing a screen for detecting an alveolar bone margin line in a cross-sectional image of the gum plane, (b) is a view showing a screen for generating an arcuate line.

Referring to FIG. 11 , the dental image processing apparatus detects the alveolar bone margin line 1110 in the cross-sectional image of the gum plane as shown in (a), and a more natural arch shape using the detected alveolar bone margin line 1110 Create line 1120 .

12 is a diagram illustrating a screen for generating a maxillary arch line based on an arch-shaped line generated using alveolar bone in the case of an edentulous patient according to an embodiment of the present invention.

More specifically, (a) is a diagram illustrating a screen for detecting a arch line generation point, and (b) is a diagram illustrating a screen for generating an arch line using the arch line generation point.

Referring to FIG. 12 , a line 1210 that is perpendicular for each region to the arc-shaped line 1120 described above with reference to FIG. 11 is defined as shown in (a), and 　 of each line 1210 The central point is defined as the arch line creation point 1220 . In this case, too, by creating the central axis of the divided tooth number area and creating a line located at the shortest distance in the Lingual-Buccal direction from the arch shape area, the arch line is created to be perpendicular to the line passing through the central axis of the divided box. can do.

Then, the dental image processing apparatus connects the arch line generation points 1220 of each area to generate the arch line 1230 as shown in (b).

13 is a diagram illustrating a tooth division screen using CT data according to an embodiment of the present invention.

Referring to FIG. 13 , the dental image processing apparatus detects a tooth division area for each tooth number through tooth division, and determines a fixture position of a tooth number to be operated by using the tooth area for each tooth number detected.

For example, as shown in FIG. 13 , each tooth area is divided to classify the position and size of the tooth to be implanted by tooth number. In the divided tooth area, the fixture may be placed at the position of the tooth number that the user inputs or is selected through interlocking with another program.

14 is a diagram illustrating a screen for determining a fixture placement position using a tooth division result and an arch line according to an embodiment of the present invention.

More specifically, (a) is a view showing a screen for determining the central axis position of the fixture using the tooth division result and the arch line, (b) is a view showing the placement position of the fixture using the tooth division result and the arch line It is a diagram showing a screen for determining.

Referring to FIG. 14, the dental image processing apparatus corresponds to the center point (generally the center of the Lingual/Buccal area) of the arch-shaped line created using the alveolar bone described above with reference to FIG. 10. The maxillary arch line creation point 1020. A predetermined central point corresponding to the central axis of the fixture 700 is positioned. Here, the predetermined central point corresponding to the central axis of the fixture 700 may be the uppermost central point of the fixture 700 . In addition, the dental image processing apparatus positions the fixture 700 in the center of the tooth division area 1300 of the tooth number to be operated on with reference to FIG. 13 .

Although the determination of the placement position of the fixture is defined using the arch line, it is provided so that the position, direction, and specifications of the fixture can be modified by using the user fine-tuning using the manipulator or the function provided by the software.

So far, the present invention has been focused 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 (14)

In the method for generating a jaw line using a dental image processing apparatus, the dental image processing apparatus comprises:
matching the patient's CT data and scan data;
determining a gum plane using the matched data;
Correcting the determined gum plane according to the type of fixture to determine the final gum plane;
generating a maxillary arch line on the finally determined cross-sectional image of the gum plane; and
determining placement information of the implant structure including the fixture by using the tooth number information to be operated on and the arch line;
A method of generating an arch line comprising a. According to claim 1, wherein the step of determining the gum plane
determining positions of the maxilla and mandible of the matched data; and
determining a section of a cross-sectional image in which an alveolar bone margin line is expressed as a plane of the gums for each of the maxilla and mandible whose positions are determined;
A method of generating an arch line comprising a. delete According to claim 1, wherein the step of determining the final gum plane
checking a position at which the fixture is to be placed according to the type of the fixture; and
Determining a final gum plane in which the arch line will be created based on the location at which the fixture is to be placed;
A method of generating an arch line comprising a. According to claim 1, wherein the step of determining the final gum plane
loading a fixture type of a tooth number to be operated on using default information of a library; further comprising,
A method of creating a jaw line, characterized in that the type of fixture for each tooth number can be set and changed by the user. delete In the method for generating a jaw line using a dental image processing apparatus, the dental image processing apparatus comprises:
matching the patient's CT data and scan data;
determining a gum plane using the matched data;
generating a jaw line on the determined sectional image of the gum plane; and
determining placement information of the implant structure including the fixture by using the tooth number information to be operated on and the arch line; including,
Steps to create the arch line
Detecting the margin line of the alveolar bone region in the determined cross-sectional image of the gum plane;
generating an arch-shaped line based on the detected alveolar bone margin line; and
reconstructing the arch-shaped line by connecting the outermost lines in the Buccal and Lingual directions to the generated arch-shaped line;
A method of generating an arch line comprising a. In the method for generating a jaw line using a dental image processing apparatus, the dental image processing apparatus comprises:
matching the patient's CT data and scan data;
determining a gum plane using the matched data;
generating a jaw line on the determined sectional image of the gum plane; and
determining placement information of the implant structure including the fixture by using the tooth number information to be operated on and the arch line; including,
Steps to create the arch line
Detecting the margin line of the alveolar bone region in the determined cross-sectional image of the gum plane;
generating an arch-shaped line based on the detected alveolar bone margin line;
setting a vertical line for each predetermined region constituting the alveolar bone region in the generated arch-shaped line;
setting the center point of each set line as the arch line creation point; and
creating an arch line by connecting the arch line generation points of each area;
A method of generating an arch line comprising a. The method of claim 1, wherein the generating of the arch line comprises:
A method for generating a jaw line, characterized in that the jaw line created on the cross-sectional image of the gum plane is determined as a reference line on which the fixture is placed. The method according to claim 1, wherein the method for generating a jaw line
detecting a tooth division area for each tooth number through tooth division; further comprising,
The step of determining the placement information of the implant structure is
A method for generating a jaw line, comprising determining fixture placement information using the tooth division result, information on the tooth number to be operated on, and the arch line. 11. The method of claim 10, wherein the step of determining the placement information of the implant structure
In the determined cross-sectional image of the gum plane, a predetermined central point corresponding to the central axis of the fixture is located at the arch line creation point corresponding to the central point of the arch-shaped line created using alveolar bone, and the central position of the tooth division area of the tooth number to be operated on A method of generating an arch line, characterized in that the fixture placement position is determined so that the fixture is positioned on the . 12. The method of claim 11,
The predetermined central point corresponding to the central axis of the fixture is the uppermost central point of the fixture. The method according to claim 1, wherein the method for generating a jaw line
correcting the fixture placement information using a user fine-tuning using a manipulator or a function provided by software;
The arch line generation method, characterized in that it further comprises. a data acquisition unit for acquiring CT data and scan data of a patient to be matched;
The acquired CT data and scan data are matched, the gum plane is determined using the matched data, and the final gum plane is determined by correcting the determined gum plane according to the type of fixture. a control unit for determining placement information of the implant structure including the fixture by using the tooth number information to be operated on after generation and the arch line; and
an output unit for displaying the generated arch line and displaying fixture placement information on the arch line;
Dental image processing apparatus comprising a.

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