WO2023008906A1 - 서지컬 가이드를 디자인하기 위한 가상 어버트먼트의 추천 방법 및 장치 - Google Patents
서지컬 가이드를 디자인하기 위한 가상 어버트먼트의 추천 방법 및 장치 Download PDFInfo
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- WO2023008906A1 WO2023008906A1 PCT/KR2022/011044 KR2022011044W WO2023008906A1 WO 2023008906 A1 WO2023008906 A1 WO 2023008906A1 KR 2022011044 W KR2022011044 W KR 2022011044W WO 2023008906 A1 WO2023008906 A1 WO 2023008906A1
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- WIPO (PCT)
- Prior art keywords
- abutment
- virtual
- patient
- crown
- implant body
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000013461 design Methods 0.000 claims abstract description 25
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 239000007943 implant Substances 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 11
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- 230000008859 change Effects 0.000 description 22
- 210000000988 bone and bone Anatomy 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 238000002513 implantation Methods 0.000 description 12
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- 230000037182 bone density Effects 0.000 description 6
- 239000004053 dental implant Substances 0.000 description 6
- 238000001356 surgical procedure Methods 0.000 description 5
- 210000000214 mouth Anatomy 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
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- 230000003247 decreasing effect Effects 0.000 description 1
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- 210000004195 gingiva Anatomy 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/70—Tooth crowns; Making thereof
- A61C5/77—Methods or devices for making crowns
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/50—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
- A61B2034/108—Computer aided selection or customisation of medical implants or cutting guides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/08—Machine parts specially adapted for dentistry
- A61C1/082—Positioning or guiding, e.g. of drills
- A61C1/084—Positioning or guiding, e.g. of drills of implanting tools
Definitions
- the present invention relates to a method and apparatus for recommending a virtual abutment for designing a surgical guide.
- a dental implant surgical guide using surgical guide software
- the user can place the implant body in an accurate position, obtain high mechanical fixation, and the user can After implantation, an abutment can be fastened and a temporary prosthesis can be fastened to the patient.
- implant surgery using the surgical guide design software can give patients aesthetic and functional satisfaction.
- an implant surgical guide design method and apparatus for recommending a virtual abutment to a user are proposed.
- a method for recommending a virtual abutment for designing a surgical guide includes arranging, by a design device, a virtual crown on an image screen displaying dental image data; Designing a virtual implant body according to the placement of the virtual crown; When the abutment included in the implant is set as a patient-customized abutment, the patient-customized abutment's gum outer length, gum outer shape, diameter, and crown insertion based on the virtual crown and the implant body. determining at least one of abutment heights (A/H); and searching for an abutment that matches the patient-specific abutment from a pre-stored abutment library based on the determination.
- A/H abutment heights
- the searching may include calculating a degree of similarity between abutments included in the abutment library and the patient-specific abutment based on the determination; and determining an abutment matching the patient-specific abutment from among the abutment library based on the degree of similarity.
- the step of calculating the similarity may include a first similarity between the gingival height (G/H) of each of the abutments included in the abutment library and the G/H of the patient-specific abutment, The second similarity between the diameter value of each of the abutments included in the abutment library and the diameter of the patient-specific abutment, the A/H of each of the abutments included in the abutment library, and the A step of calculating at least one of the third similarities between A/H of the patient-specific abutment may be included.
- Determining an abutment that matches the patient-specific abutment may include comparing the at least one calculated from among the first similarity, the second similarity, and the third similarity with a reference value set in the at least one , determining an abutment that matches the patient-specific abutment.
- a step of modifying the A/H of the abutment determined to match the patient-specific abutment may be further included.
- the method may further include searching for an abutment that matches an existing abutment from a pre-stored abutment library.
- the method may include arranging a virtual crown in dental image data; Designing a virtual implant body according to the placement of the virtual crown; and when the placement position of the virtual implant body is moved, the outer length of the gum part, the outer shape of the gum part, the diameter, and the A/ A step of adjusting at least one of H may be further included.
- the method may further include changing a shape of the virtual crown according to the moved placement position of the virtual implant body when the placement position of the virtual implant body is moved.
- a surgical guide generation method performed by a design device includes arranging a virtual crown in dental image data; Designing a virtual implant body according to the placement of the virtual crown; When the virtual abutment is set as a patient-customized abutment, based on the virtual crown and the implant body, the outer length of the gum portion, the outer shape of the gum portion, the diameter, and the height of the crown insertion portion of the patient-customized abutment ( Determining at least one of Abutment Height, A/H); Based on the determination, searching for an abutment that matches the patient-specific abutment from a pre-stored abutment library; and applying the searched abutment to the surgical guide.
- the design device receiving input whether the virtual abutment is a patient-specific abutment; arranging a virtual crown in dental image data; Designing an implant body according to the placement of the virtual crown; checking whether the input virtual abutment is set as a patient-specific abutment; And based on the placed virtual crown and the placed virtual implant body, if the confirmed setting is a patient-specific abutment, an abutment that matches the patient-customized abutment is selected from a pre-stored abutment library.
- An apparatus for recommending a virtual abutment for designing a surgical guide includes: a data acquiring unit acquiring dental image data; and when the abutment is set as a patient-specific abutment, a virtual crown is arranged using the image data, a virtual implant body is designed according to the arrangement of the virtual crown, and the virtual crown and the virtual implant body are designed.
- At least one of the length of the outer part of the gum part, the shape of the outer part of the gum part, the diameter, and the height of the crown insertion part (Abutment Height, A / H) of the patient-specific abutment is determined, and based on the determination, the pre-stored A control unit for searching for an abutment that matches the patient-specific abutment from among an abutment library may be included.
- the user when designing a dental implant surgical guide, the user can check the shape of the final prosthesis in advance by adjusting the placement position of the virtual implant body to show the changing appearance of the virtual crown.
- the virtual crown and the virtual implant body it is possible to provide convenience to the user by suggesting an abutment suitable for the design and applying it to the manipulator.
- FIG. 1 shows the configuration of a guide design device for implant surgery according to an embodiment of the present invention.
- FIG. 2 is a flowchart illustrating a series of steps for determining the type of abutment and designing and recommending the determined abutment according to an embodiment of the present invention.
- FIG. 3 is a flow chart for designing and recommending a ready-made abutment in the case of designing a ready-made abutment.
- FIG. 4 is a flowchart for designing and recommending a patient-specific abutment in the case of designing a patient-specific abutment.
- FIG. 5 is a screen for arranging a virtual crown according to an embodiment of the present invention according to an opposing tooth.
- FIG. 6 is a CT cross-sectional screen after virtual crown placement according to an embodiment of the present invention.
- FIG. 7 is a CT cross-sectional view in which an implant body is placed based on the central axis of a virtual crown according to an embodiment of the present invention.
- FIG. 8 is a screen for determining the height from the top of the virtual implant body to the gum line according to an embodiment of the present invention.
- connection line connecting both connection points on a virtual implant body is a screen for generating a connection line connecting both connection points on a virtual implant body according to an embodiment of the present invention.
- 10 is a screen for measuring a distance between a virtual implant body and a gum line according to an embodiment of the present invention.
- 11 is a screen for determining the G/H of an abutment when the margin type is a subgingival margin according to an embodiment of the present invention.
- FIG. 13 shows a supragingival margin according to an embodiment of the present invention.
- 15 is a screen for determining A/H of an abutment according to an embodiment of the present invention.
- 16 is a screen for determining the A/H of an abutment according to another embodiment of the present invention.
- 17 is a screen for determining the diameter of an abutment according to an embodiment of the present invention.
- connection points on the virtual implant body to the crown are connected to both connection points on the virtual implant body to the margin of the crown according to an embodiment of the present invention. show how to do it
- 19 is a screen for providing a manipulator with specifications of an abutment product according to an embodiment of the present invention.
- 20 is a screen for designing a virtual drilling hole according to an embodiment of the present invention.
- 21 is a screen for connecting a connection point on a virtual implant body and a point of a bone margin according to an embodiment of the present invention.
- 22 is a screen for adjusting the shape of a second connection line using a virtual manipulator according to an embodiment of the present invention.
- 23 is a screen in which distances from a first gum margin to a second gum line are measured in three dimensions, respectively, according to an embodiment of the present invention.
- 24 is a screen for determining the outer length of the gum portion of the patient-customized abutment when the margin type is the subgingival margin according to an embodiment of the present invention.
- 25 is a screen for determining the outer length of the gum portion of the patient-customized abutment when the margin type is the supragingival margin according to an embodiment of the present invention.
- 26 is a screen for determining the outer length of the gingival portion of the patient-customized abutment when the margin type is the gingival margin according to an embodiment of the present invention.
- 29 is an image screen providing a virtual manipulator capable of adjusting the outer shape of the gum portion of the patient-customized abutment according to an embodiment of the present invention.
- FIG. 30 shows a change in diameter according to a margin type of a patient-specific abutment according to an embodiment of the present invention.
- 31 is a screen for determining the A/H of the abutment in the anterior region according to an embodiment of the present invention.
- 32 is a screen for determining the A/H of the abutment in the posterior teeth according to an embodiment of the present invention.
- 33 is a screen for determining the final A/H of the abutment in consideration of the strength of the virtual crown and the material of the final prosthesis according to an embodiment of the present invention.
- FIG. 34 shows a method of matching a patient-specific abutment designed according to an embodiment of the present invention with an existing abutment.
- 35 is a screen for presenting specifications of a patient-customized abutment according to an embodiment of the present invention and providing an abutment selection screen to the user through a virtual manipulator.
- 36 is a screen for presenting specifications of a matched ready-made abutment according to an embodiment of the present invention and providing an abutment selection screen to the user through a virtual manipulator.
- FIG. 37 is a screen on which a shape change of a virtual crown is output according to a change in the placement position of a virtual implant body according to an embodiment of the present invention.
- FIG. 1 is a diagram showing the configuration of a guide design device for dental implant surgery according to an embodiment of the present invention.
- the guide design device 100 includes a data acquisition unit 110, a storage unit 120, and a control unit 130.
- the guide design device 100 may further include an input unit 140 and an output unit 150.
- the guide design device 100 may execute various dental software for dental implant surgery.
- Dental software includes viewer software and CAD software.
- Viewer software and CAD software may provide 2-dimensional and 3-dimensional images, as well as diagnostic information on teeth and tooth peripheries, depending on circumstances.
- the data acquisition unit 110 acquires one or more data for dental implant surgery.
- data includes, for example, CT data and scan data.
- CT data and scan data are used for the design of the surgical guide.
- the scan data is data having information on actual teeth including damaged teeth.
- the scan data may be obtained by scanning a plaster model created by imitating the patient's oral cavity with a 3D scanner, or by scanning an impression body created by imitating the patient's oral cavity with a 3D scanner.
- the scan data may be obtained by scanning the inside of the oral cavity of the patient using a 3D intra-oral scanner.
- CT data is data generated for a patient's head using computed tomography.
- CT data may be obtained by a CT device, preferably a Cone Beam CT (CBCT) device.
- CBCT Cone Beam CT
- the storage unit 120 has a plurality of libraries.
- the storage unit 120 includes, for example, at least one of a crown library, an abutment library, and an implant body library.
- Each library has information about crowns, abutments or implant bodies associated with each library.
- the crowns, abutments, and implant bodies stored in the library may be processed by the control unit 130 or provided to the output unit 150.
- the abutment library may be divided into a first abutment library and a second abutment library based on the shape of a margin.
- the abutment library may be divided into at least three or more abutment libraries, but in an exemplary embodiment, the shape of the margin is divided into circular and non-circular, and each of the first , classified as a second abutment library. That is, the first abutment library is a library associated with abutments having circular margins, and the second abutment library is associated with abutments having non-circular margins.
- an abutment having a circular margin shape may be a ready-made abutment
- an abutment having a non-circular margin shape may be a patient-specific abutment.
- the margin of the abutment is a part that protrudes in the diametric direction and can be classified as circular or non-circular depending on the shape, and depending on the positional relationship with the gum, the supra-gingival margin (Supra Margin), sinusoidal margin (Equi -Gingival Margin) and sub-gingival margin (Sub Margin).
- the first abutment library specifications of an abutment having a circular margin line are predefined.
- the first abutment library is predefined with gingival height (G/H), abutment height (A/H), and diameter.
- the second abutment library specifications of an abutment whose margin line is not circular are predefined.
- the second abutment library is predefined in terms of the outer length of the gum portion, A/H, and diameter.
- the controller 130 creates a virtual crown that opposes the opposing tooth in the area where the tooth is missing.
- the shape of the opposing surface of such a virtual crown may be created based on information about opposing teeth.
- the rest of the shape except for the facing surface of the virtual crown may be made using shape information of the same name or selected from a crown library having a plurality of virtual crowns.
- the controller 130 determines a virtual implant body corresponding to the virtual crown and a position of the virtual implant body, based on the shape and position of the created virtual crown.
- the controller 130 creates a virtual implant body having a determined shape at the determined position.
- the controller 130 generates 3D data of the implant body itself at the determined location or data representing the implant body in 2D at the determined location.
- the controller 130 based on at least two, preferably at least three, particularly preferably at least four of the shape of the virtual implant body, the position of the virtual implant body, the shape of the virtual crown, and the position of the virtual crown.
- the specification of the virtual abutment refers to all information related to the shape of the abutment
- the size of the virtual abutment refers to a specification of the abutment that can be measured with a predetermined parameter.
- Specifications of the abutment include, for example, G/H, A/H, diameter, circumference of the margin, and shape of the margin.
- the abutment specifications may also include, for example, a shape of an upper part of the margin located above the margin and a shape of a lower part of the margin located below the margin based on the diameter and the position of the margin.
- ‘top’ refers to the direction from the abutment to the crown
- ‘bottom’ refers to the direction from the abutment to the implant body.
- the controller 130 may search for at least one abutment in the abutment library based on the specifications of the abutment, and generate an execution screen including the searched abutment and/or a product code for the abutment. In some cases, the searched abutment and/or its product code may be provided in the surgical report.
- the controller 130 may check a change in the placement position of the virtual implant body.
- the change in the placement position of the implant body may include a change in the placement position of the virtual implant body, a change in the placement direction of the virtual implant body, and a change in the placement depth of the virtual implant body.
- the controller 130 may calculate margin information, which is information about a boundary area between the virtual prosthesis and the teeth. In addition, the controller 130 may check the change in the placement position of the virtual implant body and, when the placement position of the virtual implant body is changed, reflect the change to calculate margin information again.
- the input unit 140 refers to a means for receiving a user manipulation signal, and includes, for example, a touch screen, a mouse, a keyboard, and a remote controller, but is not limited thereto. According to an embodiment, when the user wants to manually move the placement position of the virtual implant body, the input unit 140 may receive a user manipulation signal for adjusting the placement position of the virtual implant body. Also, the input unit 140 may receive an input for selecting an abutment that the user wants to use among the recommended abutments output by the output unit 150 .
- the output unit 150 may display at least one of a simulation screen in which an abutment is virtually placed, a simulation screen in which an implant body and an abutment are fastened, and a simulation screen in which a virtual crown is inserted over the abutment.
- the output unit 150 may display the optimal abutment specifications determined through the control unit 130 on the screen.
- a color map expressing the margin information calculated through the controller 130 in color may be displayed on the screen.
- a virtual user interface for user manipulation When a virtual user interface for user manipulation is provided on the screen by the output unit 150 and the input unit 140 receives a user manipulation signal by a user operation through the user interface, the control unit 130 moves the abutment. Can be manually adjusted.
- a virtual user interface may include a manipulator.
- the manipulator may be provided so that the user can adjust the specifications of the abutment.
- the virtual manipulator may output the recommended abutment and provide a screen for the user to select the abutment.
- the method of recommending an abutment may be formed as at least part of a computer program.
- the control unit of the guide design device recommends an abutment using such software.
- an operation by a control unit may be described as an operation by software.
- Figure 2 is a flow chart showing the step of determining the abutment specifications according to an embodiment of the present invention.
- the software receives an input of whether to design a patient-specific abutment (S100). Depending on whether or not to design an abutment customized for the inputted patient, the process of designing the abutment later becomes different.
- the software arranges the virtual crown according to the opposing tooth (S200).
- the software determines an implantation position, an implantation direction, and an implantation depth of the virtual implant body based on the information related to the placed virtual crown (S300).
- the information related to the virtual crown may include specifications, tooth axis, and material information of the virtual crown.
- an implantation position, an implantation direction, and an implantation depth of the virtual implant body may be changed in response to a user input.
- the software checks whether to design a custom abutment (S400). For example, the software determines the design target as either a customized abutment or a ready-made abutment based on user settings or user input. For another example, the software preferentially selects a ready-made abutment to calculate the specifications of the abutment, but determines to design a customized abutment if the calculated specifications are out of the standard range. On the other hand, in the case of preferentially selecting the ready-made abutment, at least some of the operations to be described later, for example, S510 to S530 of S500 in FIG. 3 may be omitted and operation S540 may be performed directly.
- FIG. 3 is a flow chart for designing and recommending a ready-made abutment (S500) when designing a ready-made abutment.
- the software may first determine the G/H of the abutment (S510).
- the software determines the diameter of the abutment by the widths of the mesial, distal, buccal and lingual sides of the crown, and then from the margin line of the abutment to the gum of the opposing tooth.
- the length to the highest part is determined as the A/H of the abutment, or the length to the lowest part of the virtual crown is determined as the A/H of the abutment (S520).
- the software may determine the height obtained by subtracting a preset value (eg, 1.5 to 2.0 mm) in consideration of the strength or material of the crown as the A/H of the abutment.
- the software checks whether the determined G/H and A/H of the abutment are out of a preset reference range (S530). If the G/H and A/H of the determined abutment are out of the preset standard range ('Yes' in S530), the software cannot recommend the abutment product in the first abutment library. It may proceed to a process of designing a butment (S600).
- the software selects the G/H of the abutment designed from among the existing abutments in the first abutment library.
- a plurality of abutments may be recommended in consideration of /H, diameter, angle, and A/H (S540).
- the angle of the abutment refers to an angle ⁇ from the first connection points 311 and 312 of the uppermost end 310 of the implant body shown in FIG. 18 to the abutment.
- the software first selects a first group in which the G/H of the abutment determined in the first abutment library satisfies a predetermined criterion, and the diameter of the abutment determined in the selected first group. A second group smaller than the designed abutment diameter may be selected again. Next, the software may select a third group in which the angle of the abutment is less than or equal to a predetermined value in the selected second group.
- the software may select, as the first group, a plurality of abutments higher than the G/H of the abutments designed in the first abutment library. Subsequently, the software may select a second group smaller than the designed diameter of the abutment from the selected first group.
- the software may select a third group in which the angle of the abutment is less than or equal to a predetermined value in the selected second group.
- the number of abutments that the software will recommend to the user among the third group may be limited to three.
- a virtual manipulator may be displayed along with a plurality of recommended abutments.
- the software may select one of a plurality of recommended abutments according to a user input to the manipulator.
- FIG. 4 is a flowchart for designing and recommending (S600) a patient-specific abutment when designing a patient-specific abutment.
- the software first detects bone density around the virtual drilling hole and detects a bone margin (S610).
- the software determines the outer length and shape of the gum portion of the abutment and the diameter of the abutment (S620).
- the software may design the shape of the part where the gum part of the abutment is adjacent to the bone margin and the part where the gum part of the abutment is adjacent to the gum margin.
- the software determines the connection shape of the margin line of the abutment at the location where the diameter is determined (S630).
- the connection shape of the margin line of the abutment is the shape of the part connected to the prosthesis in the margin line of the abutment.
- the software determines the A/H of each different abutment at the position where the connection shape of the margin line of the abutment is determined, and then calculates the A/H of the final abutment considering the strength of the virtual crown and the material of the final prosthesis. It is determined (S640).
- the software In the step of determining the A/H of the abutment (S640), the software considers at least one of the shape of the opposing tooth and the shape of the virtual crown at the position where the connection shape of the margin line of the abutment is determined, and each different abutment The A/H of the ment can be determined.
- the software determines the height obtained by subtracting a preset distance (eg, 1.5 to 2.0 mm) in consideration of the strength of the virtual crown and the material of the final prosthesis. It can be decided by the final A/H.
- a preset distance eg, 1.5 to 2.0 mm
- the software may provide the designed customized abutment specification to the user as it is, or may recommend and output a plurality of ready-made abutments from the second abutment library (S650).
- S650 A method for selecting an abutment from the second abutment library will be described later in detail with reference to FIG. 36 .
- the software checks the change in the placement position of the virtual implant body according to the user input on the output screen (S700), and if there is a change in the placement position of the virtual implant body, the virtual crown is repositioned. (S800), and the abutment can be redesigned (S500 or S600). That is, when there is a change in the placement position of the virtual implant body, the software may immediately recommend the abutment determined according to the change in the placement position of the virtual implant body to the user without executing a separate design program.
- the software may output the selected abutment specification and provide it on a surgical report (S900). At this time, the software can record the determined specifications of the abutment on the surgical report and automatically interlock with the product code.
- 5 and 6 are screens showing steps of arranging the virtual crown of FIG. 2 according to an embodiment of the present invention.
- FIG. 5 is a screen for arranging a virtual crown according to an embodiment of the present invention according to an opposing tooth.
- the software arranges the virtual crown 200 to match the opposing tooth.
- the software creates 3D oral data by matching the patient's scan data and CT data, and then arranges the virtual crown 200 according to the opposing tooth using upper and lower jaw information of the 3D oral data.
- the widths of the mesial and distal surfaces of the virtual crown 200 are set based on the adjacent teeth on both sides, and in FIG. As shown in b, the height of the virtual crown 200 is set based on the shape of the tooth opposing the gum of the scan data. Also, as shown in FIG. 5C , the buccal and lingual widths of the virtual crown 200 are determined by the sizes of the buccal and lingual widths of opposing teeth.
- FIG. 6 is a CT cross-sectional screen after virtual crown placement according to an embodiment of the present invention.
- a CT section eg, cross section
- FIG. 7 and 8 are video screens showing a step of designing a virtual implant body (S300 in FIG. 2) according to the arranged virtual crown of FIG. 2 according to an embodiment of the present invention.
- FIG. 7 is a CT cross-sectional view in which a virtual implant body is placed based on the central axis of a virtual crown according to an embodiment of the present invention.
- the software designs the virtual implant body 300 including the implantation position, implantation direction, and implantation depth of the virtual implant body 300 using the central axis of the virtual crown 200 and surrounding structures.
- the software may determine the placement position of the virtual implant body 300 to be located at the center of the virtual crown 200 with the same central axis as that of the virtual crown 200 .
- the software may determine the placement position of the virtual implant body 300 by additionally considering relationship information of the virtual implant body 300 with surrounding structures (eg, alveolar bone, adjacent teeth, and anatomical structures). For example, the software may determine the placement position of the virtual implant body 300 so that the virtual implant body 300 is located inside the alveolar bone 400 . At this time, the software may determine the placement position of the virtual implant body 300 while checking the alveolar bone information of the CT data.
- surrounding structures eg, alveolar bone, adjacent teeth, and anatomical structures.
- FIG. 8 is a screen for determining the height from the top of the virtual implant body 300 to the gum line according to an embodiment of the present invention
- FIG. 9 is a connection on the virtual implant body 300 according to an embodiment of the present invention.
- FIG. 10 is a screen for measuring the distance between the virtual implant body 300 and the gum line according to an embodiment of the present invention.
- margin information of the gum and cross-section information of CT data are displayed on the screen at one cross-section of CT data and oral model data.
- the software may determine the height from the top 310 of the virtual implant body 300 displayed on the screen to the gum line 500 .
- the upper and lower sides of the implant body appear inverted.
- the software creates a connection line 313 connecting the first connection points 311 and 312 on the uppermost end 310 of the virtual implant body 300 .
- the first connection points 311 and 312 are areas where the abutment and the virtual implant body 300 come into contact, respectively.
- the software measures vertical distances 1010 and 1020 from the first connection points 311 and 312 to the gum line 500 .
- the vertical distances 1010 and 1020 between the first connection points 311 and 312 and the gum line 500 are the heights from the uppermost end 310 of the virtual implant body 300 to the gum line 500 .
- FIG. 11 is a screen for determining G/H of an abutment when the margin type is a subgingival margin according to an embodiment of the present invention
- FIG. 12 shows a subgingival margin according to an embodiment of the present invention.
- the software sets the abutment at a preset distance (eg, 0.5 to 1.0 mm) from the gum line 1200.
- the G/H of the abutment 600 may be determined so that the margin line 610 of the abutment 600 is positioned.
- the subgingival margin refers to a case where the margin line 610 of the abutment is buried under the gum line 1200, and is generally used in areas requiring aesthetics.
- the software selects an abutment having a G/H closest to the determined G/H of the abutment from among a plurality of first abutments having a smaller G/H than the determined G/H of the abutment. . Subsequently, the software may determine the G/H of the abutment under design as the G/H of the selected abutment.
- the margin type is a subgingival margin
- the measured vertical distances 1010 and 1020 to the first connection points 311 and 312 and the gum line 500 are 4.26 mm, respectively.
- 4.15 mm and the G/H of the first abutment in the first abutment library is 3 mm, 4 mm, or 5 mm
- the software may determine the G/H of the abutment to be 4 mm.
- FIG. 13 shows a supragingival margin according to an embodiment of the present invention.
- the software moves a preset distance (eg, 0.5 to 1.0 mm) above the gum line 1200 .
- the G/H of the abutment may be determined so that the margin line 610 of the butment 600 is located.
- the supragingival margin refers to the case where the margin line 610 of the abutment 600 is above the gum line 1200, and is generally used in the molar area to give good periodontal results. can be obtained.
- the software selects an abutment having a G/H closest to the determined G/H of the abutment from among a plurality of first abutments having a G/H greater than the determined G/H of the abutment. Subsequently, the software may determine the G/H of the selected abutment as the G/H of the designing abutment.
- the software may determine the G/H of the abutment as 5mm.
- the software generates warning information when the virtual implant body 300 needs to be deeply placed or when the thickness of the gum is thick and the G/H of the abutment 600 exceeds a preset maximum value (eg, 7 mm). can be output to the screen.
- the warning information may include a phrase warning that selectable abutments are limited.
- margin information 1400 obtained according to the relationship between the virtual implant body and the abutment is displayed on the screen.
- the margin information 1400 may be provided in the form of a color map expressed in color.
- the software may provide screens viewed from various directions on the margin information 1400 .
- FIG. 14 shows a screen including margin information viewed from the occlusal direction
- FIG. 14 shows a screen including margin information viewed from the buccal direction
- FIG. 14(d) shows a screen including margin information viewed from the Lingual direction
- FIG. 14(e) includes margin information viewed from the Distal direction. screen can be displayed.
- the software may determine the diameter of the abutment after determining the G/H of the abutment and then the A/H of the abutment. As another example, the software may determine the A/H after determining the G/H of the abutment and then determine the diameter of the abutment. That is, the software may first determine the G/H of the abutment.
- 15 is a screen for determining A/H of an abutment according to an embodiment of the present invention.
- the software measures a vertical distance 1500 from the margin line 610 of the abutment to the uppermost end 710 of the opposing tooth 700, The measured vertical distance (1500) can be used to determine the A/H of the abutment.
- 16 and 17 are screens for determining A/H of an abutment according to another embodiment of the present invention.
- the software calculates the vertical distance from the margin line 610 of the abutment to the top 210, which is the farthest position from the gum of the virtual crown ( 1610), and the measured vertical distance (1610, B1) can be used to determine the A/H of the abutment.
- the software may determine the vertical distance (1620, B2) deducted by a certain length as the A/H of the abutment in consideration of the strength of the virtual crown and the material of the final prosthetic appliance. 16 and 17, since the virtual crown is located in the upper jaw, the virtual crown appears in an inverted form.
- the software may determine the diameter of the abutment using the mesial, distal, buccal, and lingual widths of the virtual crown. For example, if the diameter of the abutment is increased by a certain value and the abutment comes into contact with any one of the widths of the mesial, distal, buccal and lingual sides of the virtual crown, the software calculates the length of the abutment at this time. Determined by the diameter of the ment.
- the software measures the mesial, distal, buccal and lingual widths of the crown. Thereafter, the software may determine the diameter of the abutment based on the smallest one among the widths of the mesial, distal, buccal and lingual sides of the crown. If the diameter of the virtual crown does not fall into an integer for the mesial, distal, buccal and lingual widths, the software calculates the abutment diameter as the measured (or determined) virtual crown diameter value minus the decimal point. Decide.
- FIG. 18 is a method for selecting the one in the first abutment library where the angle from the first connection points 311 and 312 mentioned in FIG. 10 to the abutment (ie, the angle of the abutment) is less than or equal to a predetermined angle. indicates
- the software when the abutment in the first abutment library is coupled to the implant body and the crown, the software is vertical at the first connection points 311 and 312 of the top end 310 of the implant body.
- the software measures the angle ⁇ of the abutment representing the angle between the first straight line and the second straight line, and selects only the abutment where the angle ⁇ of the abutment is less than or equal to a predetermined angle, and the user selects only the abutment.
- the predetermined angle may be 40 degrees.
- the software determines that the G/H of the abutment is 3.0 mm, 4.0 mm, or 5.0 among abutments having an angle of 40 degrees or less measured according to an embodiment of the present invention. You can choose an abutment in mm.
- 19 is a screen for providing an abutment determined according to an embodiment of the present invention as an output screen to a user along with information such as specifications of a product to a virtual manipulator.
- the software provides the determined ready-made abutment to the user along with a product code or abutment specification to a virtual manipulator, so that the user can select a product.
- the determined ready-made abutment may further include, in addition to the most ideal ready-made abutment, a next-ranked ready-made abutment having the most similar specifications to the most ideal ready-made abutment.
- the software highlights the most ideal ready-made abutment as shown in (a) of FIG. 19 (1910) or displays the most ideal ready-made abutment as shown in (b) in order to distinguish it from the next ready-made abutment.
- the edge color of can be emphasized differently from the next-order ready-made abutment (1920).
- the software After the specifications of the abutment are determined, the software records the specifications of the abutment (G/H, A/H, diameter of the abutment) in the Surgical Report, and the product code of the abutment. It can be recorded in the surgical report in conjunction with the specification.
- the product code may be expressed in the order of a predetermined management name (eg, GSTA), the diameter of the abutment, A/H, and G/H.
- a predetermined management name eg, GSTA
- the product code is expressed as GSTA7450.
- 20 is a screen for designing a virtual drilling hole according to an embodiment of the present invention.
- the software may analyze bone density around the designed virtual implant body and design a virtual drilling hole 2010 based on the diameter and length of the virtual implant body.
- the software then detects the bone margin and creates a first gum line 2020 adjacent to the bone margin.
- the bone margin may be generated by referring to bone density information around the virtual drilling hole 2010 designed based on the virtual implant body.
- the bone density of the part in contact with the virtual drilling hole 2010 is obtained from CT data through the HU (housfield unit) value of the part in contact with the virtual drilling hole 2010, and the bone density of the gum It is obtained through the average HU value in the gingiva.
- the final bone margin may be obtained using the acquired bone density of the gum.
- the software also creates a second gum line 2030 from the scan data to touch the virtual crown 200 .
- the outer length of the gum part of the abutment is from the point where the implant body and the abutment are combined to the point where the first gum line 2020 and the virtual drilling hole 2010 meet.
- the outer length of the first gum portion and the outer length of the second gum portion may be designed respectively.
- 21 to 23 are screens showing the step of determining the outer length, shape, and diameter of the gum portion of the abutment (S620 in FIG. 4) according to an embodiment of the present invention.
- 21 is a screen for connecting a connection point of a virtual implant body and a point of a bone margin according to an embodiment of the present invention.
- the software after matching scan data and CT data to generate three-dimensional oral data, the software generates a first gum line 2020 obtained from a cross section of the CT data and a second gum line 2020 obtained from a cross section of the scan data.
- a screen displaying the gum line 2030 may be provided to the user.
- the software creates first connection points 2011 and 2012 at the point of the virtual drilling hole 2010 where the virtual drilling hole 2010 and the first gum line 2020 come into contact, and the second Connection points 2013 and 2014 are created, and a first connection line is created by connecting each of the second connection points 2013 and 2014.
- the software measures the length from the first connection points 2011 and 2012 to the second connection points 2013 and 2014. At this time, the first connection points 2011 and 2012 are located on the first gum line 2020 .
- the software creates second connection lines 2015 and 2016 by connecting the second connection points 2013 and 2014 and the first connection points 2011 and 2012 of the virtual implant body.
- the second connection lines 2015 and 2016 may be formed in a straight line or a curve, and correspond to the outer length of the first gum portion, which is the length from the top of the implant body to the first gum line 2020.
- each of the first connection points 2011 and 2012 and the second connection points 2013 and 2014 may be three or more. That is, in this specification, since the screen shown in FIG. 21 is a two-dimensional screen, for convenience of description, two first connection points 2011 and 2012 and two second connection points 2013 and 2014 are generated respectively. Although described as being done, each of the first connection points 2011 and 2012 and the second connection points 2013 and 2014 may be three or more. Accordingly, the number of second connection lines 2015 and 2016 connecting the first connection points 2011 and 2012 and the second connection points 2013 and 2014 may also be three or more.
- a curved surface may be formed by the plurality of second connection lines 2015 and 2016, and the curved surface may correspond to a surface including the outer length of the first gum part among the outer lengths of the gum part of the abutment.
- 22 is a screen for adjusting the shape of a second connection line using a virtual manipulator according to an embodiment of the present invention.
- the software creates a virtual manipulator (2210, 2210) for manual adjustment at a predetermined point (eg, 1/2 point, 1/3 point, etc.) 2220) is provided to the user so that the user can adjust the shape of the second connecting lines 2015 and 2016.
- a predetermined point eg, 1/2 point, 1/3 point, etc.
- software provides a virtual manipulator to adjust the shape of the second connection lines 2015 and 2016 only to a concave shape. That is, the user may adjust the shape of the second connection lines 2015 and 2016 from a concave shape to a straight shape.
- 23 is a screen in which distances from a first gum line to a second gum line are measured in three dimensions, respectively, according to an embodiment of the present invention.
- the software provides information from the first connection points 2011 and 2012, which are connection points on the first gum line 2020, to the third connection points 2211 and 2212 on the second gum line 2030.
- the outer lengths 2213 and 2214 of the second gum portion may be measured.
- the outer lengths 2213 and 2214 of the second gum portion may be different from each other.
- the outer lengths of the second gum portion 2213 and 2214 may be determined to be 2.51 mm and 2.48 mm, respectively.
- 24 to 30 are screens showing a step (S620 in FIG. 4) of determining the outer length of the gum portion, the outer shape of the gum portion, and the diameter of the abutment according to the margin type according to an embodiment of the present invention.
- software may adjust the outer shape of the gum portion of the abutment.
- the software will 3-dimensionally make the margin line of the abutment U-shaped and 0.5mm below the set line.
- a subgingival margin can be implemented by designing a patient-specific abutment to be positioned.
- 24 is a screen for determining the outer length of the gum portion of the patient-specific abutment when the margin type is a subgingival margin according to an embodiment of the present invention.
- the software changes the outer lengths 2213 and 2214 of the second gum portion smaller than the value determined in the previous step (eg, 0.5 mm subgingival margin).
- the outer lengths 2213 and 2214 of the second gum portion are changed from 2.51 mm to 2.01 mm and from 2.48 mm to 1.98 mm, respectively).
- the abutment margin line 610 is lower than the gum line 1200, it is generally used in an area where aesthetics are important.
- 25 is a screen for determining the outer length of the gum portion of the patient-customized abutment when the margin type is the supragingival margin according to an embodiment of the present invention.
- the software changes the outer lengths 2213 and 2214 of the second gum portion to a greater extent than the value determined in the previous step (for example, 0.5 mm supragingival margin).
- the outer lengths 2213 and 2214 of the second gum portion are changed from 2.51 mm to 3.01 mm and from 2.48 mm to 2.98 mm, respectively).
- the abutment margin line 610 is above the gum line 1200 and is generally used for the molar region, and corresponds to a periodontally good margin.
- FIG. 26 is a screen for determining the outer length of the gingival portion of a patient-customized abutment when the margin type is a sinusoidal margin according to an embodiment of the present invention
- FIG. 27 is a sinusoidal margin according to an embodiment of the present invention. indicates
- the margin type is the pars gingival margin
- the second gum portion outer lengths 2213 and 2214 are , determined the same as the value determined in the previous step.
- the scalloped margin which can embody the shape of the gingival margin and gum as it is, can only be applied to patient-specific abutments.
- FIG. 28 shows types of outer shape of the gum part of the patient-customized abutment according to an embodiment of the present invention
- FIG. 29 shows a virtual manipulator capable of adjusting the outer shape of the patient-customized gum part according to an embodiment of the present invention. screen is provided.
- the software converts the outer shape 2800 of the second gum outer length 2213, 2214 into a concave, straight, or convex shape. can be adjusted to
- the software sets predetermined points on the second outer lengths of the gum part 2213 and 2214 (eg, the second outer lengths of the gum part 2213 and 2214, respectively).
- virtual manipulators 2910 and 2920 for adjusting the outer shape of the gum portion are displayed.
- the user may adjust the outer shape of the gum portion of the abutment by a predetermined operation (eg, an operation of extending or decreasing by dragging a mouse).
- FIG. 30 shows a change in the diameter of a patient-specific abutment according to an embodiment of the present invention.
- the process of designing an abutment customized for the patient by the software changes the diameter of the abutment.
- the software according to the virtual crown and margin type (i.e., supragingival margin, subgingival margin, Equivalence margin) created in the virtual crown placement step (S200 in FIG. 2),
- the diameter 3000 of the abutment may be determined.
- 31 to 33 are screens showing the step of determining the A/H of the abutment of FIG. 4 (S640) according to an embodiment of the present invention.
- 31 is a screen for determining the A/H of an abutment in the anterior region according to an embodiment of the present invention.
- the software directs the central axis of the abutment on the outer surface of the designed virtual crown for the anterior tooth (ie, the mesial, distal, buccal and lingual directions of the four outer surfaces of the virtual crown, respectively). Measure the A/H of the abutment at the point moved by the preset length H mm (for example, 1.5 to 2 mm).
- FIG. 31 shows a method for determining the point at which the A/H value of the abutment is measured on the Anterior screen, and (b) shows how A method for determining the point at which the A/H value of the butment is measured is shown, and (c) may indicate a method for determining the point at which the A/H value of the abutment is measured on the Occlusal screen.
- 32 is a screen for determining the A/H of an abutment in the posterior region according to an embodiment of the present invention.
- the software measures A/H of the abutment based on the mesial surface, the distal surface, and the buccal and lingual cusps of the designed virtual crown for the posterior teeth.
- FIG. 31 shows a method for determining the point where the A/H of the abutment is measured on the Anterior screen, and (b) shows the abutment on the Cross screen. The method of determining the point to measure the A/H of the abutment is shown, and (c) can indicate the method of determining the point to measure the A/H of the abutment on the Occlusal screen.
- each value can be adjusted according to the shape of the opposing tooth or the shape of the virtual crown.
- 33 is a screen for determining the final A/H of an abutment in consideration of the material or strength of a virtual crown according to an embodiment of the present invention.
- the software takes into account the strength of the temporary prosthesis (eg, temporary virtual crown) or the material of the final prosthesis in the A/H of the abutment at the measured abutment joint site in advance.
- the final A/H of the abutment is determined by subtracting the set length (eg, 1.5 to 2.0 mm).
- the software reduces the final A/H (M1 mm to M4 mm) of the patient-specific abutment in FIG. 33 by 2.0 mm compared to the A/H (K1 mm to K4 mm) of the abutment in FIG. can decide
- FIG. 33 shows a screen for determining the final A/H of the abutment on the Anterior screen, and (b) shows the final A/H of the abutment on the Cross screen.
- a screen for determining the A/H may be shown, and (c) may indicate a screen for determining the final A/H of the abutment on the Occlusal screen.
- 34 illustrates a method of matching the specifications of a patient-specific abutment designed according to an embodiment of the present invention to an abutment in a second abutment library.
- the designed patient-specific abutment and the abutment in the second abutment library are respectively placed in a three-dimensional coordinate system. do.
- the software may compare the degree of similarity between the designed patient-specific abutment arranged in the three-dimensional coordinate system and the abutment in the second abutment library.
- the specifications of the abutment for comparing the similarity are the G/H (3410, 3420) of the abutment, the A/H (3430, 3440) of the abutment included in the outer shape of the abutment, and the diameters 3450 and 3460.
- the software may compare the degree of similarity and match an abutment having a degree of similarity equal to or greater than a predetermined value among the abutments in the second abutment library with a designed patient-specific abutment.
- the software compares the area corresponding to the G / H (3410, 3420) of the designed patient-specific abutment and the abutment in the second abutment library to obtain a similar degree. It can be defined as the first degree of similarity.
- the software may match an abutment in the second abutment library having a first similarity equal to or greater than a predetermined value (eg, 90%) with a designed patient-specific abutment.
- the second similarity may be defined by comparing the diameters 3450 and 3460 of the abutment, and the software may determine a second similarity in a second abutment library having a predetermined value (eg, 90%) or more. Butts can be matched with designed patient-specific abutments.
- the software may compare the A/H (3430, 3440) of the abutment to define a third similarity, and the second abutment library having the third similarity equal to or greater than a predetermined value (eg, 90%).
- a predetermined value eg, 90%
- the software may define, as the first group, an abutment having a first similarity of a predetermined value (eg, 90%) or more among the second abutment library, and among the abutments of the first group, the second group Abutments having a similarity of at least a predetermined value (eg, 90%) may be defined as a second group. Subsequently, the software may select an abutment having a third similarity of a predetermined value (eg, 90%) or more among the abutments of the second group as a patient-specific abutment.
- a predetermined value eg, 90%
- the software may select three matching abutments from the second abutment library, but is not limited thereto. That is, the number of abutments selected by the software may vary depending on the embodiment.
- the software determines the A/H of the abutment based on the strength of the temporary prosthesis and the material of the final prosthesis.
- a correction value eg, a decrease value
- the user can later adjust the A/H of the abutment corresponding to the third degree of similarity from the second abutment library, and select an optimized abutment using the correction value.
- FIG. 35 is a screen for presenting specifications of a patient-customized abutment according to an embodiment of the present invention and providing an abutment selection screen to the user through a virtual manipulator
- FIG. 36 is a screen according to an embodiment of the present invention. This screen presents the specifications of the matched ready-made abutment and provides the user with an abutment selection screen through a virtual manipulator.
- the user can check the designed patient-specific abutment through the screen and select it through the virtual manipulator.
- the software stores a plurality of ready-made abutments selected from the second abutment library by product code and/or abutment specification (Mesiodistal (M/D) length, Buccolinual (B/L) length, etc.) is provided to the user, and the user can select one of the ready-made abutments provided through the virtual manipulator.
- the software uses methods such as highlighting the product screen corresponding to the abutment most suitable for the user among the ready-made abutments selected from the second abutment library or changing the border color to differentiate it from other abutments. may be displayed differently.
- the following is a description of the abutment design process that can be performed regardless of whether it is a process of designing a custom abutment.
- the software checks whether the placement position of the virtual implant body is changed (S700).
- the software places the virtual crown again (S800) and checks whether it is a process of designing an abutment customized for the patient (S400).
- the software performs a process of designing a ready-made abutment or a process of designing a patient-specific abutment, and recommends the abutment to the user (S500 and S600). Subsequently, the user may select an abutment whose specifications are changed in real time using a virtual manipulator.
- the user can be recommended an optimal abutment according to the movement of the implant body in real time without using separate software.
- FIG. 37 is a screen for providing a shape change of a virtual crown to a user when there is a change in the implantation position of the implant body according to an embodiment of the present invention.
- the software determines the movement of the placement position 3700 of the virtual implant body. Accordingly, the shape of the virtual crown 200 may be deformed and provided to the user.
- the user can immediately check the shape of the virtual crown according to the change in the placement position of the virtual implant body in real time.
- Combinations of each block of the block diagram and each step of the flowchart attached to the present invention may be implemented as a computer program or code.
- a computer program or code may create means for performing the functions described in each block or each step of the flowchart. Since these computer programs or codes may be stored in any kind of computer usable or computer readable recording medium, the programs or codes stored in the recording medium, etc. may produce a block or manufactured item that performs the function of each step of the flowchart. . In addition, these programs or codes may be loaded on a computer or other programmable data processing equipment, so that the computer or other programmable data processing equipment may perform a series of operation steps.
- Each block or step may represent a module or portion of code comprising one or more executable programs or codes, and it is possible for blocks or steps in a flowchart to be performed out of sequence. For example, two blocks or steps shown in succession may be performed concurrently, or the blocks or steps may be performed in reverse order depending on their function.
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Abstract
Description
Claims (13)
- 서지컬 가이드를 디자인하기 위한 가상 어버트먼트의 추천 방법에 있어서, 디자인 장치가,치과용 영상 데이터에서 가상 크라운을 배치하는 단계;상기 가상 크라운의 배치에 따라 가상 임플란트 바디를 디자인하는 단계;상기 가상 어버트먼트가 환자 맞춤형 어버트먼트로 설정된 경우, 상기 가상 크라운과 상기 가상 임플란트 바디에 기초하여, 상기 환자 맞춤형 어버트먼트의 잇몸부 외곽 길이, 잇몸부 외곽 형상, 직경 및 크라운 삽입부 높이(Abutment Height, A/H) 중에서 적어도 하나를 결정하는 단계; 및상기 결정에 기초하여, 기 저장된 어버트먼트 라이브러리 중에서 상기 환자 맞춤형 어버트먼트와 매칭되는 어버트먼트를 검색하는 단계를 포함하는추천 방법.
- 제1 항에 있어서,상기 검색하는 단계는,상기 결정에 기초하여, 상기 어버트먼트 라이브러리에 포함된 어버트먼트들과 상기 환자 맞춤형 어버트먼트 사이의 유사도를 계산하는 단계; 및상기 유사도에 기초하여, 상기 어버트먼트 라이브러리 중에서 상기 환자 맞춤형 어버트먼트와 매칭되는 어버트먼트를 결정하는 단계를 포함하는추천 방법.
- 제2 항에 있어서,상기 유사도를 계산하는 단계는,상기 어버트먼트 라이브러리에 포함된 어버트먼트들 각각의 잇몸부 높이(Gingival Height, G/H)와 상기 환자 맞춤형 어버트먼트의 G/H 사이의 제1 유사도, 상기 어버트먼트 라이브러리에 포함된 어버트먼트들 각각의 직경 값과 상기 환자 맞춤형 어버트먼트의 직경 값 사이의 제2 유사도, 상기 어버트먼트 라이브러리에 포함된 어버트먼트들 각각의 A/H와 상기 환자 맞춤형 어버트먼트의 A/H 사이의 제3 유사도 중에서 적어도 하나를 계산하는 단계를 포함하는추천 방법.
- 제3 항에 있어서,상기 환자 맞춤형 어버트먼트와 매칭되는 어버트먼트를 결정하는 단계는,상기 제1 유사도, 상기 제2 유사도 및 상기 제3 유사도 중에서 계산된 상기 적어도 하나와 상기 적어도 하나에 기 설정된 기준 값을 비교하여, 상기 환자 맞춤형 어버트먼트와 매칭되는 어버트먼트를 결정하는 단계를 포함하는추천 방법.
- 제4 항에 있어서,상기 환자 맞춤형 어버트먼트와 매칭되는 것으로 결정된 어버트먼트의 A/H 가 상기 환자 맞춤형 어버트먼트의 A/H보다 큰 경우, 임시 보철물의 강도 및 최종 보철물의 재료 중에서 적어도 하나에 기초하여, 상기 환자 맞춤형 어버트먼트와 매칭되는 것으로 결정된 어버트먼트의 A/H를 수정하는 단계를 더 포함하는추천 방법.
- 제1 항에 있어서,상기 임플란트에 포함되는 어버트먼트가 기성 어버트먼트로 설정된 경우, 상기 가상 임플란트 바디의 최상단에서 상기 가상 크라운까지 수직으로 이은 선과 상기 가상 임플란트 바디의 최상단에서 상기 가상 크라운의 마진부분까지 이은 선에 의해 결정되는 각도에 기초하여, 기 저장된 어버트먼트 라이브러리 중에서 기성 어버트먼트와 매칭되는 어버트먼트를 검색하는 단계를 포함하는추천 방법.
- 제1 항 또는 제6 항에 있어서,상기 가상 임플란트 바디의 위치가 이동된 경우, 이동된 상기 가상 임플란트 바디의 위치에 따라, 상기 환자 맞춤형 어버트먼트의 상기 잇몸부 외곽 길이, 상기 잇몸부 외곽 형상, 상기 직경 및 상기 A/H 중에서 적어도 하나를 조정하는 단계를 더 포함하는추천 방법.
- 제7 항에 있어서,상기 가상 임플란트 바디의 위치가 이동된 경우, 이동된 상기 가상 임플란트 바디의 위치에 따라, 상기 가상 크라운의 형상을 변경하는 단계를 더 포함하는추천 방법.
- 디자인 장치에 의해 수행되는 서지컬 가이드 생성 방법에 있어서,치과용 영상 데이터에서 가상 크라운을 배치하는 단계;상기 가상 크라운의 배치에 따라 가상 임플란트 바디를 디자인하는 단계;상기 가상 어버트먼트가 환자 맞춤형 어버트먼트로 설정된 경우, 상기 가상 크라운과 상기 임플란트 바디에 기초하여, 상기 환자 맞춤형 어버트먼트의 잇몸부 외곽 길이, 잇몸부 외곽 형상, 직경 및 크라운 삽입부 높이(Abutment Height, A/H) 중에서 적어도 하나를 결정하는 단계;상기 결정에 기초하여, 기 저장된 어버트먼트 라이브러리 중에서 상기 환자 맞춤형 어버트먼트와 매칭되는 어버트먼트를 검색하는 단계; 및상기 검색된 어버트먼트를 상기 서지컬 가이드에 적용하는 단계를 포함하는가이드 생성 방법.
- 서지컬 가이드를 디자인하기 위한 가상 어버트먼트의 추천 방법에 있어서, 디자인 장치가,상기 가상 어버트먼트가 환자 맞춤형 어버트먼트인지 입력받는 단계;치과용 영상 데이터에서 가상 크라운을 배치하는 단계;상기 가상 크라운의 배치에 따라 임플란트 바디를 디자인하는 단계;상기 입력받은 가상 어버트먼트가 환자 맞춤형 어버트먼트로 설정되었는지를 확인하는 단계; 및상기 배치된 가상 크라운과 상기 배치된 가상 임플란트 바디에 기초하여, 상기 확인된 설정이 환자 맞춤형 어버트먼트인 경우, 기 저장된 어버트먼트 라이브러리 중에서 상기 환자 맞춤형 어버트먼트와 매칭되는 어버트먼트를 검색하고, 상기 확인된 설정이 환자 맞춤형 어버트먼트가 아닌 경우, 기 저장된 어버트먼트 라이브러리 중에서 기성 어버트먼트와 매칭되는 어버트먼트를 검색하는 단계를 포함하는추천 방법.
- 치과용 영상 데이터를 획득하는 데이터 획득부; 및가상 어버트먼트가 환자 맞춤형 어버트먼트로 설정된 경우, 상기 영상 데이터를 이용하여, 가상 크라운을 배치하고, 상기 가상 크라운의 배치에 따라 가상 임플란트 바디를 디자인하며, 상기 가상 크라운과 상기 임플란트 바디에 기초하여, 상기 환자 맞춤형 어버트먼트의 잇몸부 외곽 길이, 잇몸부 외곽 형상, 직경 및 크라운 삽입부 높이(Abutment Height, A/H) 중에서 적어도 하나를 결정하 결정하고, 상기 결정에 기초하여, 기 저장된 어버트먼트 라이브러리 중에서 상기 환자 맞춤형 어버트먼트와 매칭되는 어버트먼트를 검색하는 제어부를 포함하는추천 장치
- 컴퓨터 프로그램을 저장하고 있는 컴퓨터 판독 가능 기록매체로서,상기 컴퓨터 프로그램은,제1 항 내지 제10 항 중 어느 한 항에 따른 방법을 프로세서가 수행하도록 하기 위한 명령어를 포함하는컴퓨터 판독 가능한 기록매체.
- 컴퓨터 판독 가능한 기록매체에 저장되어 있는 컴퓨터 프로그램으로서,상기 컴퓨터 프로그램은,제1 항 내지 제10 항 중 어느 한 항에 따른 방법을 프로세서가 수행하도록 하기 위한 명령어를 포함하는컴퓨터 프로그램.
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KR20170014592A (ko) * | 2015-07-30 | 2017-02-08 | 한국전자통신연구원 | 치아 모델 생성/관리 장치 및 방법 |
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