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KR101689748B1 - Dental implant surgery planning method, apparatus and recording medium thereof - Google Patents

Dental implant surgery planning method, apparatus and recording medium thereof Download PDF

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Publication number
KR101689748B1
KR101689748B1 KR1020150180046A KR20150180046A KR101689748B1 KR 101689748 B1 KR101689748 B1 KR 101689748B1 KR 1020150180046 A KR1020150180046 A KR 1020150180046A KR 20150180046 A KR20150180046 A KR 20150180046A KR 101689748 B1 KR101689748 B1 KR 101689748B1
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KR
South Korea
Prior art keywords
fixture
crown
safe
setting
implant
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KR1020150180046A
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Korean (ko)
Inventor
최규옥
정정운
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오스템임플란트 주식회사
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Priority to KR1020150180046A priority Critical patent/KR101689748B1/en
Priority to PCT/KR2016/014324 priority patent/WO2017105032A1/en
Application granted granted Critical
Publication of KR101689748B1 publication Critical patent/KR101689748B1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00Dental prostheses; Making same
    • A61C13/0003Making bridge-work, inlays, implants or the like
    • A61C13/0004Computer-assisted sizing or machining of dental prostheses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00Dental prostheses; Making same
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00Dental auxiliary appliances
    • A61C19/04Measuring instruments specially adapted for dentistry
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048Connecting the upper structure to the implant, e.g. bridging bars

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Prosthetics (AREA)

Abstract

The present invention relates to a dental implant planning method, an apparatus therefor, and a recording medium on which the method is installed. In the planning of the implant procedure through simulation, the range of the fixture to which the crown can be connected is limited, Can be removed in advance.

Description

TECHNICAL FIELD [0001] The present invention relates to a dental implant plan planning method, a device for the same, and a recording medium on which the implant plan,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental implant planning method, an apparatus therefor, and a recording medium on which the method is recorded. More particularly, the present invention relates to a technique for establishing a dental implant plan through simulation of implant placement.

Dental implant treatment is an implant procedure planning process that determines the size, type, position, orientation, and shape of implants suitable for the patient's condition prior to surgery.

Firstly, we acquire an image that can grasp the anatomical structure of the patient and the condition of the tooth bone such as X-ray, CT, MRI, and panorama through the image equipment and select the type and size of the implant suitable for the patient's condition Position, orientation, and shape are simulated through a software program.

According to a program for a conventional implant procedure plan, a fixture is positioned at an appropriate position according to an analysis result of an anatomical structure or bone density around an implant target area, and then, an abutment ) And the position of the crown are determined. Thus, according to the prior art, an implant treatment plan is being made centering on a fixture.

On the other hand, the position of the crown has to be determined not only in relation to the fixture but also in consideration of the relation between the surrounding teeth and the complementary value, so that there is a practical limit in the region where the crown can be located. As a result, it is almost impossible to control the movement, rotation or depth of the crown. When the crown is positioned at a position corresponding to the abutment, the crown may be broken due to the gravitational force due to the chewing motion after the placement of the fixture is too close to the boundary of the crown.

Therefore, for a successful implant procedure, the positional relationship between the fixture and the crown connected via the abutment is very important. However, according to the fixture-centered implant planning program as in the prior art, positioning of the fixture is preceded, and then the position of the crown is determined, so that it is inevitable to adjust the position of the fixture according to the position of the crown. Since the position of the fixture is adjusted manually, it is troublesome and time-consuming due to the repeated fixture positioning process.

In addition, the prior art implant planning program only provides the function of guiding the position of the fixture according to the anatomical structure or the position of the peripheral implant, but does not provide a function of guiding the fixture and the crown to have a proper positional relationship , And there is a risk that it may be exposed to the risk of crown fracture after the procedure.

The present invention has been proposed in order to overcome the problems of the related art that the fixture position adjustment is required again at the planning stage due to the implant fixation plan being centered on the fixture and it can be exposed to the risk of crown fracture after the procedure. A crown-based dental implant planning method preceded by a positioning, an apparatus therefor, and a recording medium on which the apparatus is recorded.

According to an aspect of the present invention, there is provided a method of planning an implant operation through simulation, the method comprising: placing a crown and a fixture on an image; Setting a safety zone for guiding a connection position of the fixture to the crown in an inner region of the crown; And providing warning information when the fixture is moved within a predetermined range of the safe zone according to a move instruction of the fixture inputted through the user interface.

At this time, the step of setting the safe zone may include setting the safe zone based on user input through the user interface, or setting the safe zone based on the attribute of the crown including at least one of the area, size, The safety zone can be set according to a preset reference based on a layout mode including a position or an angle.

The above object can also be achieved by a computer-readable recording medium on which a program for executing the above-described dental implant planning method is recorded.

In addition, the above object is also achieved by an apparatus for planning a dental implant treatment plan through a simulation according to another aspect of the present invention, the apparatus comprising at least one implant object including an crown and a fixture, A component; A condition setting unit for setting a safe area for guiding a connection position of the fixture to the crown in an inner area of a crown disposed in the image; And an object modifying unit for providing warning information when the fixture is moved within a predetermined range of the safe region according to a position correcting command of the fixture inputted through the user interface, by an apparatus for a dental implant procedure plan .

Here, the object constructing unit may reduce the planning establishment time by providing a crown center plan that determines the position and orientation of the fixture based on the position and angle of the crown arranged corresponding to the tooth missing position.

The object modifying unit may restrict the movement of the fixture so that the fixture does not exceed the maximum bounding range of the safe area and may calculate the distance to the boundary of the fixture and the safe area, And to provide the warning information when the distance is included in predetermined criteria for providing warning information.

As described above, according to the present invention, the positioning of the crown is preceded, so that the time delay due to the fixture position adjustment can be prevented.

Further, according to the present invention, the positional relationship between the crown and the fixture is guided to prevent the risk of crown fracture after the operation.

1 is a block diagram of an apparatus for a dental implant procedure plan according to an embodiment of the present invention;
FIG. 2 is a view for explaining an example of a safety zone set according to an embodiment of the present invention; FIG.
3 is a flowchart of a dental implant planning method according to an embodiment of the present invention; And
4 is an example of a screen for providing warning information as the fixture approaches the safe region in the dental implant planning method according to the embodiment of the present invention.

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

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

The apparatus for dental implant treatment plan according to the present invention is characterized in that an implant object such as a fixture, a crown, and an abutment, which is a connection medium between a crown and a fixture, , The orientation, the length, and the size of the implant, and provides simulations for placing the implant virtually.

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

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

The object constructing unit 30 creates an implant object and places it on the image. Here, the image in which the implant object is placed refers to a two-dimensional or three-dimensional multi-dimensional image in which the patient's tooth arrangement generated for the implant procedure planning is displayed. Various types of images such as X-ray, CT, MRI, panoramic image, scan image, reconstructed image, and multiple images can be used in the implant plan.

The object constructing unit 30 can determine the layout of the implant object, such as the position, orientation, and angle, and object attributes such as the dimensions, size, and shape of the object. This is done based on various image processing algorithms, user input information and pre-established criteria.

The condition setting unit 50 sets a condition according to the connection relation between the crown and the fixture arranged in the image by the object constructing unit 30. [ Because the crown is the area that engages the mating face during mastication, the fixture should be connected to the proper position so that the force applied to the crown during mastication is evenly distributed. If the force is applied in a specific direction, the crown can be broken and the connection between the crown and the fixture is very important for successful operation.

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

Fig. 2 is a reference diagram for explaining an example of a safe area set by the condition setting unit 50. Fig. Referring to FIG. 2, the safe region S is set in the inner region of the crown 201 with the boundary L of the crown 201 as a boundary.

The safe range can vary depending on the size, area, shape, crown position and angle of the crown. For example, the safe region may be simply set in a circular shape, but its specific shape may be determined corresponding to the shape of the crown as shown in FIG. 2, and the crown may be placed in a region where strong force is applied The safety area may be relatively narrow. Also, the area of the safety area may be formed to be wider in proportion to the area of the crown.

In this way, the area, shape, etc. of the safe area are adaptively determined by taking into consideration not only the crown own property but also the layout of crown position, angle and direction, and surrounding teeth. Therefore, the condition setting unit 50 stores the safe area setting criterion according to the attribute and the layout of the crown to be placed, and can set the safe area based on the stored safe area setting criterion.

The object modification unit 70 allows a user to modify an implant object primarily disposed on the image. The object modification unit 70 moves and rotates an object according to a modification instruction of the implant object input through the user interface unit 10 , Dimensions, length, and size. In addition, the object modification unit 70 provides warning information when the fixture moves closer to the boundary of the safety zone in which the fixture is set. In addition to the provision of the warning information, a function of limiting the movement of the fixture so that the fixture does not exceed the boundary of the safe area can be added.

Thus, the apparatus 100 for a dental implant planning plan according to an embodiment of the present invention provides a range of connection areas of fixtures that are free of the risk of crown fracture, thereby enabling a successful implant procedure.

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

In order to establish the implant placement plan, it is necessary to acquire the medical image of the patient, reconstruct the acquired medical image, and perform image processing such as image matching.

When an image to be simulated is set up for establishing the implant treatment plan through the above process, the implant objects that constitute the implant including the crown and the fixture are placed in the image at the position where the tooth is lost and the implant is required (S10) .

An example of arranging the implant object on the image is as follows. First, a crown is placed in the tooth loss region, and a fixture can be arranged corresponding to the position and the arranged angle of the crown.

At this time, the position of the crown can be determined by detecting the position and size of the area where the tooth has been lost through the image processing, thereby determining the size and arrangement position of the crown. Alternatively, the crown may be arranged according to user input through the user interface unit 10. [ For example, when the maximum convexity of the crown to be placed by the user, that is, both end points of the widest part when descending toward the gum are input to the image, the crown may be arranged so that the maximum wind & have. According to this, the size of the crown and the angle at which it is placed are determined based on the distance between two input points and the slope between two points.

The fixation direction and the placement position of the fixture are determined on the basis of the arrangement position and angle of the crowns thus arranged, and the fixture is arranged on the image.

In this way, the crown is first placed in the image, and the crown-based planning method in which the fixture is arranged in correspondence with the crown is adopted. Thus, in order to match the crown having a substantial limit in the embedding region according to the relationship between the peripheral teeth and the opposing teeth, It is possible to greatly reduce the time required to adjust the position of the light source.

On the other hand, it is also possible to arrange the fixture depending on the arrangement of the crown and the arrangement of the crown, as opposed to the arrangement of the crown as in the above-described example, but conversely the crown may be arranged according to the orientation and position of the fixture, Of course.

Accordingly, the apparatus 100 for an implant treatment plan according to an embodiment of the present invention may be configured to selectively provide a first placement mode in which placement of a crown is preceded and a second placement mode in which placement of a fixture is preceded, Can be implemented.

When the placement of the crown and the fixture is completed through the above-described steps, a safe area indicating a range in which the fixture can be connected is set in the inner area of the placed crown (S20).

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

As another example, the setting of the safe area may be made automatically according to a preset reference based on the area of the placed crown. For this purpose, a setting criterion according to the items to be considered in setting the safety zone such as the size, area, shape, crown position, and angle of the crown may be prepared, and the safety zone may be automatically set based on the setting criteria. In this manner, it is of course possible to provide the user with an opportunity to modify the safety zone even when the setting is automatically made.

Thereafter, it provides an analysis result of the bone density around the position where the fixture is placed and an analysis result of the anatomical structure, thereby providing an opportunity for the user to modify the implant object that is primarily disposed.

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

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

4 is an example of a screen for providing warning information as the fixture approaches the safe area when correcting the fixture position. 4 (a) to (c), the fixture approaches the boundary of the safe region and is corrected.

4, the position of a fixture is corrected in an axial image. However, various types of two-dimensional images such as a sagittal image, a coronal image, And the three-dimensional image can be corrected.

In Fig. 4A, the boundary line F of the fixture and the boundary line S of the safe area remain sufficiently distant from each other. In the case of b, the boundary line F of the fixture gradually approaches the boundary line S of the safe area. It can be confirmed that it is located at a very close distance from the boundary line S. In FIG. 4, the distance between two boundary lines F and S is provided, and the boundary line S of the safe area is changed from orange to red as the distance approaches the distance between the two boundary lines F and S .

The distance between the boundary line F of the fixture and the boundary line S of the safe area is calculated and when the fixture boundary line F is close to the boundary line S of the set safety margin below the predetermined distance, , And S), and can provide warning information so that the user can easily recognize the display style such as the color or thickness displayed according to the distance between the two boundary lines F and S. On the other hand, the warning information may be provided not only as time information but also as auditory information such as a warning voice, as in the above-described example.

Further, a function of restricting the fixture movement may be added so that the fixture boundary line F exceeds the boundary line S of the safe region, which is the maximum boundary range of the safety region, so that correction is not performed.

As described above, according to the dental implant planning method and apparatus (100) of the present invention, it is possible to prevent the crown fracture risk after the operation by guiding the connection relation between the crown and the fixture, . In addition, by providing a function of determining and arranging the position of the fixture around the crown, the implant procedure planning time can be effectively reduced.

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

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

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

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

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

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

10: user interface unit 30: object configuration unit
50: condition setting unit 70: object number determining unit

Claims (8)

In a method for planning an implant procedure through simulation,
Placing a crown and a fixture on an image;
Setting a safety zone for guiding a connection position of the fixture to the crown in an inner region of the crown; And
And providing warning information when the fixture is moved within a predetermined range of the safety zone according to the movement instruction of the fixture inputted through the user interface.
The method according to claim 1,
The step of setting the safe area may include:
And setting the safe zone based on user input through a user interface.
The method according to claim 1,
The step of setting the safe area may include:
A dental implant procedure planning method for setting the safe zone according to a preset reference based on a layout including a property of a crown including at least any one of an area, a size, and a shape of the crown, .
A computer-readable recording medium on which a program for executing a dental implant planning method according to any one of claims 1 to 3 is recorded.
An apparatus for dental implant planning through simulation, the apparatus comprising:
An object constructing unit for arranging at least one implant object constituting an 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 to the crown in an inner area of a crown disposed in the image; And
And an object modification unit for providing warning information when the fixture is moved within a predetermined range of the safe area according to a fix position command of the fixture inputted through the user interface.
6. The method of claim 5,
Wherein the object constructing unit comprises:
A device for a dental implant procedure plan that determines the position and orientation of a fixture based on the position and angle of a crown disposed corresponding to a tooth loss position.
6. The method of claim 5,
Wherein the object modifying unit comprises:
And restricting movement of the fixture such that the fixture does not exceed a maximum bounded range of the safe zone upon revision of the fixture's position.
6. The method of claim 5,
Wherein the object modifying unit comprises:
And calculates the distance to the boundary between the fixture and the safe region and provides the alert information if the calculated distance is within a predetermined criterion for providing warning information.
KR1020150180046A 2015-12-16 2015-12-16 Dental implant surgery planning method, apparatus and recording medium thereof KR101689748B1 (en)

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KR1020150180046A KR101689748B1 (en) 2015-12-16 2015-12-16 Dental implant surgery planning method, apparatus and recording medium thereof
PCT/KR2016/014324 WO2017105032A1 (en) 2015-12-16 2016-12-07 Method for planning dental implant procedure, apparatus therefor, and recording medium having method recorded thereon

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KR20190142080A (en) * 2018-06-15 2019-12-26 오스템임플란트 주식회사 Dental implant planning method, apparatus, and recording medium thereof

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Publication number Priority date Publication date Assignee Title
KR20180120890A (en) * 2017-04-28 2018-11-07 주식회사 코어라인소프트 System and method of dental implant planning
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