WO2017105032A1

WO2017105032A1 - Method for planning dental implant procedure, apparatus therefor, and recording medium having method recorded thereon

Info

Publication number: WO2017105032A1
Application number: PCT/KR2016/014324
Authority: WO
Inventors: 최규옥; 정정운
Original assignee: 오스템임플란트 주식회사
Priority date: 2015-12-16
Filing date: 2016-12-07
Publication date: 2017-06-22
Also published as: KR101689748B1

Abstract

The present invention relates to a method for planning a dental implant procedure, an apparatus for the method, and a recording medium having the method recorded thereon. When planning an implant procedure by means of a simulation, the danger of post-procedure crown fracture can be preemptively eliminated by limiting the range within which a fixture can be connected to a crown.

Description

Methods of planning dental implant procedures, apparatus for them and recording media recording them

The present invention relates to a dental implant procedure planning method, apparatus for the same, and a recording medium recording the same, and more particularly, to a technique for establishing a dental implant procedure plan through the implant placement simulation.

Dental implant treatment involves an implant procedure planning process that determines the dimensions, types, locations, orientations, and shapes of the implant that are appropriate for the patient's condition prior to the procedure.

First, the imaging equipment can be used to obtain an image of the patient's anatomical structure such as X-ray, CT, MRI, panorama, etc., and to determine the condition of the dental bones. Position, orientation, shape, etc. are simulated by software program.

According to a conventional program for implant planning, a fixture is placed at an appropriate position according to an analysis result of anatomical structures or bone density around an implant target area, and then abutments corresponding to the fixture position. ) And the crown (Crown) position is determined. As described above, according to the prior art, the implant treatment plan is made around the fixture.

On the other hand, the position of the crown should be determined in consideration of not only the relationship with the fixture but also the relationship between the surrounding teeth and the antagonist, so there is a practical limit in the area where the crown can be located. This makes it almost impossible to move, rotate or adjust the position of the crown. When the crown is placed in a position corresponding to the antagonist by satisfying the above limit condition, if the fixture position is placed too close to the boundary of the crown, there is a risk that the crown is broken by the grip force caused by the chewing movement after the implant procedure.

Therefore, the positional relationship between the fixture and the crown connected to the abutment is very important for successful implantation. However, according to the fixture-oriented implant planning program as in the prior art, the positioning of the fixture is preceded, and then the position of the crown is determined, so that the adjustment of the position of the fixture is inevitable according to the position of the crown. Since the adjustment of the position of the fixture is made manually, it is not only cumbersome, but there is a problem that takes time due to the repeated fixture positioning process.

In addition, the implant planning program according to the prior art provides only the function of guiding the positioning of the fixture according to the anatomical structure or the position of the surrounding implant, and does not provide the function of guiding the fixture and the crown to have a proper positional relationship. After the procedure, there was a problem of being exposed to the risk of crown fracture.

The present invention has been proposed to solve the problem of the prior art that the implant procedure planning is made around the fixture, which is not only cumbersome because the fixture position adjustment is necessary again in the planning stage, and may be exposed to the risk of crown fracture even after the procedure. It is an object of the present invention to provide a crown-based dental implant procedure planning method, a device therefor, and a recording medium recording the same.

The above object is a method of planning an implant procedure through a simulation according to an aspect of the present invention, comprising: arranging a crown and a fixture in an image; Setting a safe region in the inner region of the crown for guiding a connection position of the fixture with respect to the crown; And providing warning information when the fixture is moved within a predetermined range of the safety area according to the movement command of the fixture input through the user interface.

In this case, the setting of the safety area may include setting the safety area based on a user input through a user interface, or arranging the property of the crown including at least one of an area, a size, and a shape of the crown. The safety zone may be set according to a preset criterion based on the arrangement including the position or angle.

On the other hand, the above object can also be achieved by a computer readable recording medium having recorded thereon a program for executing the aforementioned dental implant procedure planning method.

In addition, the above object is a device for planning a dental implant procedure through simulation according to another aspect of the present invention, an object for placing at least one implant object constituting the implant including the crown and fixture on the image Component; A condition setting unit for setting a safe area for guiding a connection position of the fixture with respect to the crown in an inner area of the crown disposed in the image; And an object corrector for providing warning information when the fixture is moved within a predetermined range of the safety area according to the position correction command of the fixture input through a user interface. Can be.

Here, the object configuration unit may reduce the planning time by providing a crown-centered plan that determines the position and placement direction of the fixture based on the position and angle of the crown disposed corresponding to the tooth loss position.

On the other hand, the object modifying unit may limit the movement of the fixture so that the fixture does not exceed the maximum boundary range of the safe area, and further, calculates the distance to the boundary between the fixture and the safe area, the calculation The warning information may be implemented to provide the warning information when the distance is included within a predetermined criterion for providing the warning information.

As described above, according to the present invention, the positioning of the crown is preceded to prevent time delay due to the fixture position adjustment.

In addition, according to the present invention, it is possible to prevent the risk of crown fracture after the procedure by guiding the positional relationship between the crown and the fixture.

1 is a block diagram of an apparatus for a dental implant procedure plan in accordance with an embodiment of the present invention;

2 is a reference diagram for explaining an example of a safety area set according to an embodiment of the present invention;

3 is a flow chart of a dental implant procedure planning method according to an embodiment of the present invention; And

4 is an example of a screen for providing warning information as a fixture approaches a safe area in a dental implant procedure planning method according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the following description and the accompanying drawings, detailed descriptions of well-known functions or configurations that may obscure the subject matter of the present invention will be omitted. In addition, it should be noted that like elements are denoted by the same reference numerals as much as possible throughout the drawings.

The terms or words used in the specification and claims described below should not be construed as being limited to ordinary or dictionary meanings, and the inventors are appropriate as concepts of terms for explaining their own invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, and various alternatives may be substituted at the time of the present application. It should be understood that there may be equivalents and variations.

An apparatus for planning a dental implant procedure according to the present invention, the implantation position of the implant object constituting the implant, such as fixture (Crown), abutment (Abutment) that is the connection medium of the crown and fixture before the procedure In addition, the implantation direction, length, size, etc. are determined to provide a simulation of implantation virtually.

1 is a block diagram of an apparatus for a dental implant procedure plan in accordance with an embodiment of the present invention. Referring to FIG. 1, the apparatus 100 for a dental implant procedure plan includes a user interface 10, an object configuration unit 30, a condition setting unit 50, and an object correction unit 70.

The user interface 10 is for receiving various commands from a user, and may be implemented as input means such as a mouse, a keyboard, a button, a keypad, and / or a GUI on the screen.

The object constructing unit 30 generates an implant object and places it in an image. Here, the image in which the implant object is disposed means a multi-dimensional image such as 2D, 3D, etc., in which a tooth arrangement of a patient generated for establishment of an implant procedure plan is shown. The implant treatment plan may use various types of images such as X-ray, CT, MRI, panoramic image, scan image, image generated through reconstruction, and a combination of images.

The object constructing unit 30 may determine an arrangement mode such as a position, a direction, an angle, and the like, and an object property such as a dimension, a size, and a shape of the object. This is performed based on various image processing algorithms, information input from a user, and criteria prepared in advance.

The condition setting unit 50 sets a condition according to the connection relationship between the crown and the fixture disposed in the image by the object configuring unit 30. Since the crown is the part that engages the antagonist during the mastication movement, the fixture should be connected to the proper position so that the force applied to the crown during the mastication is evenly distributed. If the force is applied biased to a particular part, the crown may fracture and the connection between the crown and the fixture is very important for a successful procedure.

To this end, the condition setting unit 50 sets a safety area for guiding the connection position of the fixture with respect to the crown.

2 is a reference diagram for describing an example of a safety area set by the condition setting unit 50. Referring to FIG. 2, the safety region S is set in the inner region of the crown 201 at the boundary L of the crown 201.

The safety zone may vary in extent depending on the size, area, shape, crown position, angle, and the like of the crown. For example, the safety region may be simply set in a circular shape, but as shown in FIG. 2, a specific shape may be determined according to the shape of the crown, and the crown may be placed in an area where a strong force is applied during the chewing. In this case, the safety region may be relatively narrow. In addition, the area of the safety area may be wider in proportion to the area of the crown.

As such, the area, shape, and the like of the safety area are adaptively determined by considering not only the crown's own properties but also the arrangement, such as the position, angle, and orientation of the crown, and the surrounding teeth. Therefore, the condition setting unit 50 may store the safety zone setting criteria according to the attributes and the arrangement of the crowns to be arranged, and set the safety zone based on the safety zone setting criteria.

The object correction unit 70 allows a user to modify an implant object primarily disposed in an image, and moves and rotates the position of the object according to an instruction for modifying an implant object input through the user interface unit 10. Change attributes such as dimension, length, and size. In addition, the object corrector 70 provides warning information when the fixture moves close to the boundary of the set safe area. In addition to providing the warning information, a function of limiting the movement of the fixture may be further added so that the fixture does not cross the boundary of the safe area.

As such, the device 100 for a dental implant procedure plan according to an embodiment of the present invention can provide a successful implant procedure by providing a range of connection areas of the fixture without the risk of fracture of the crown.

3 is a flowchart of a method for planning an implant procedure according to an embodiment of the present invention. Hereinafter, referring to FIG. 3, the organic operation of the apparatus 100 for the aforementioned implant procedure plan will be described.

In order to establish an implant placement plan, an image processing process such as acquiring a medical image of a patient, reconstructing an acquired medical image, and image registration is premised.

When the image to perform the simulation is prepared for the implant procedure planning through the above process, to place the implant objects constituting the implant including the crown and fixture in the image where the teeth are lost and implant placement (S10) .

As an example of arranging an implant object in an image, the crown may be first disposed in the tooth loss region, and the fixture may be disposed corresponding to the position and the disposed angle of the crown.

In this case, the crown arrangement may be determined by detecting the position and size of the region where the tooth is lost through image processing to determine the size and arrangement position of the crown. Alternatively, the crown may be arranged according to a user input through the user interface unit 10. For example, if the user inputs the maximum convexity of the crown to be placed, that is, both end points of the widest part when descending toward the gum, the crown may be disposed so as to pass through the two input points. have. According to this, the size of the crown and the disposed angle are determined based on the distance between the two input points and the inclination between the two points.

The fixation direction and the implantation position of the fixture are determined based on the arrangement position and the angle of the crown disposed as described above, and the fixture is disposed in the image.

In this way, the crown is first placed on the image, and the crown centered planning method of arranging the fixtures in correspondence with the crown is used to fit the crown in which there is a practical limit in the implantation area according to the relationship with the surrounding teeth and antagonists. The time taken to adjust the position of can be greatly reduced.

On the other hand, as described above, although the arrangement of the crown is preceded and the fixture may be arranged depending on the aspect in which the crown is disposed, on the contrary, the fixture may be placed first and the crown may be arranged according to the placement direction and position of the fixture. Of course.

Accordingly, the apparatus 100 for implant treatment planning according to an embodiment of the present invention may selectively provide a first placement mode preceded by the placement of the crown and a second placement mode preceded by the placement of the fixture according to the user's selection. Can be implemented.

When the arrangement of the crown and the fixture is completed through the above-described steps, a safety region indicating a range in which the fixtures can be connected is set among the inner regions of the arranged crown (S20).

For example, the safe area may be set based on a user input through the user interface 10. For example, the user interface unit 10 receives a plurality of points in the crown and connects the input points to set a safe area, or basically provides a curved surface according to the shape of the crown, The shape and size may be adjusted by the user so that the safety area may be set.

As another example, the setting of the safety area may be automatically performed according to a preset criterion based on the area of the crown that is disposed. To this end, the setting criteria according to the items to be considered in setting the safety area, such as the size, area, shape of the crown, the position where the crown is disposed, the angle, and the like, may be prepared, and the safety area may be automatically set based thereon. As such, it is of course possible to provide the user with an opportunity to modify the safety zone even when set automatically.

Thereafter, the results of the location analysis of the bone density and anatomical structure around the position where the fixture is placed, provide an opportunity for the user to modify the primarily placed implant object.

The user has a bone density suitable for fixing fixtures through the user interface unit 10, adjusts the implantation angle of the fixture to a position which does not overlap with the anatomical structure around, and moves the position of the fixture according to the horizontal / vertical movement.

In this case, when the fixture moves within a predetermined range of the safe area and is located close to the boundary of the safe area, warning information is provided (S30 and S40).

4 is an example of a screen that provides warning information as a fixture approaches a safe area when fixing a fixture location. As shown in a to c of FIG. 4, the fixture approaches the boundary of the safe area, and the modification is performed.

For reference, in FIG. 4, as an example, the position of the fixture is corrected in the axial image, but not only the axial image, but also various two-dimensional images such as sagittal images and coronal images. Of course, the correction can also be made in the three-dimensional image.

In FIG. 4A, the boundary line F of the fixture and the boundary line S of the safe area remain sufficiently apart, while in b, the boundary line F of the fixture gradually approaches the boundary line S of the safe area, and in c, It can be seen that it is located very close to the boundary line (S). In FIG. 4, the distance between the two boundary lines F and S is provided, and the boundary line S of the safety area is changed from orange to red as the distance approaches as the distance between the two boundary lines F and S is reflected. .

As such, the distance between the boundary line F of the fixture and the boundary line S of the safety area is calculated, and when the boundary line S of the fixture boundary F and the set safety area come closer to or less than a predetermined distance, the two boundary lines F The distance of, S) may be displayed, and warning information may be provided for the user to easily recognize by changing the display style such as the color or thickness displayed according to the distance between the two boundary lines (F, S). Meanwhile, the warning information may be provided not only visual information but also auditory information such as warning sound as described above.

In addition, a function of limiting the movement of the fixture may be further added such that the fixation boundary F does not exceed the boundary line S of the safety area which is the maximum boundary range of the safety area.

As described above, according to the dental implant procedure planning method and apparatus 100 for the same according to the present invention, by guiding the connection relationship between the crown and the fixture to prevent the risk of crown fracture after the procedure to achieve a successful implant procedure We can plan. In addition, by providing the function of positioning and positioning the fixture around the crown, it is possible to effectively reduce the implant planning time.

Meanwhile, the dental implant procedure planning method according to the present invention may be implemented as a program that can be executed in a computer, and may be implemented as various recording media such as a magnetic storage medium, an optical read medium, and a digital storage medium.

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or in combinations of them. Implementations may be implemented for processing by, or to control the operation of, a data processing device, eg, a programmable processor, a computer, or multiple computers, a computer program product, ie an information carrier, for example a machine readable storage. It can be implemented as a device (computer readable medium) or as a computer program tangibly embodied in a radio signal. Computer programs, such as the computer program (s) described above, may be written in any form of programming language, including compiled or interpreted languages, and may be written as standalone programs or in modules, components, subroutines, or computing environments. It can be deployed in any form, including as other units suitable for use. The computer program can be deployed to be processed on one computer or multiple computers at one site or distributed across multiple sites and interconnected by a communication network.

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

Although the specification includes numerous specific implementation details, these should not be construed as limiting to any invention or the scope of the claims, but rather as a description of features that may be specific to a particular embodiment of a particular invention. It must be understood. Certain features that are described in this specification in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable subcombination. Furthermore, while the features may operate in a particular combination and may be initially depicted as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, the claimed combination being a subcombination Or a combination of subcombinations.

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

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples for clarity and are not intended to limit the scope of the present invention. It is apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

Claims

In the method of planning the implant procedure through the simulation,

Disposing a crown and a fixture on an image;

Setting a safe region in the inner region of the crown for guiding a connection position of the fixture with respect to the crown; And

And providing warning information when the fixture is moved within a predetermined range of the safety area according to a movement command of the fixture input through a user interface.
The method of claim 1,

The setting of the safe area may include:

Dental implant procedure planning method for setting the safety zone based on a user input through a user interface.
The method of claim 1,

The setting of the safe area may include:

Dental implant procedure planning method for setting the safety zone according to a predetermined criterion based on the configuration including the position or angle disposed and the attributes of the crown including at least one of the area, size, and shape of the crown .
A computer-readable recording medium having recorded thereon a program for executing the dental implant procedure planning method according to any one of claims 1 to 3.
Apparatus for planning dental implant procedure through simulation,

An object constitution unit for arranging at least one implant object constituting the implant including a crown and a fixture in an image;

A condition setting unit for setting a safe area for guiding a connection position of the fixture with respect to the crown in an inner area of the crown disposed in the image; And

And an object correction unit for providing warning information when the fixture is moved within a predetermined range of the safety area according to a position correction command of the fixture input through a user interface.
The method of claim 5,

The object configuration unit,

An apparatus for dental implant planning that determines the position and placement of the fixture based on the position and angle of the crown disposed corresponding to the tooth loss position.
The method of claim 5,

The object modification unit,

And when modifying the position of the fixture, restricting the movement of the fixture so that the fixture does not exceed the maximum boundary range of the safe area.
The method of claim 5,

The object modification unit,

And calculating a distance to a boundary between the fixture and the safe area, and providing the warning information when the calculated distance is included in a predetermined criterion for providing warning information.