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WO2016108454A1 - Procédé pour planification d'implant dentaire, appareil pour celui-ci, et support d'enregistrement sur lequel ce dernier est enregistré - Google Patents

Procédé pour planification d'implant dentaire, appareil pour celui-ci, et support d'enregistrement sur lequel ce dernier est enregistré Download PDF

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Publication number
WO2016108454A1
WO2016108454A1 PCT/KR2015/013260 KR2015013260W WO2016108454A1 WO 2016108454 A1 WO2016108454 A1 WO 2016108454A1 KR 2015013260 W KR2015013260 W KR 2015013260W WO 2016108454 A1 WO2016108454 A1 WO 2016108454A1
Authority
WO
WIPO (PCT)
Prior art keywords
virtual crown
objects
implant
dental implant
size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2015/013260
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English (en)
Korean (ko)
Inventor
최규옥
김태환
황승용
이성윤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osstem Implant Co Ltd
Original Assignee
Osstem Implant Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020150067951A external-priority patent/KR101666982B1/ko
Application filed by Osstem Implant Co Ltd filed Critical Osstem Implant Co Ltd
Priority to US15/541,204 priority Critical patent/US11195623B2/en
Priority to EP15875548.8A priority patent/EP3241522B1/fr
Priority to CN201580070938.3A priority patent/CN107430634B/zh
Publication of WO2016108454A1 publication Critical patent/WO2016108454A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry

Definitions

  • the present invention relates to a dental implant planning method, apparatus for the same and a recording medium recording the same, and more particularly, to a technique for reducing the complexity and increasing the accuracy in determining the position of the implant objects during dental implant planning. .
  • Dental implant treatment involves an implant planning process that determines the dimensions, types, locations, orientations, and shapes of the implants that are appropriate for the patient's bone condition prior to the procedure.
  • the image acquisition equipment can be used to acquire the image of X-ray, CT, MRI, Panorama, etc. to understand the quantity and quality of the jaw and tooth bone of the patient, and then select the type and size of implant suitable for the patient's condition. Or simulation of the orientation, shape, etc. through the software program.
  • the software program for dental implant planning is implemented to create the objects constituting such implants, such as fixtures, abutments, sleeves, and virtual crowns, respectively, and to modify their position or size. have.
  • separate creation and modification of an object is not only cumbersome, but when one object is modified, another object may need to be re-modified according to the modified object, thereby causing a lot of time and effort.
  • the simulation is performed using a wax-up generated by using an object such as a virtual crown or a scanner.
  • an object such as a virtual crown or a scanner.
  • the conventional dental implant planning method It is impossible to modify the size of the virtual crown, and even if it provides a correction function, it provides only a limited function of expanding or contracting in the same ratio in all directions with the same size weight in the left and right directions based on the central axis of the virtual crown.
  • the present invention provides a method for dental implant planning, an apparatus therefor, and a recording medium recording the same, which can provide convenience to a user. Furthermore, the present invention provides a dental implant planning method, an apparatus for the same, and a recording medium recording the same, by informing a user when the position or size of the implant object is out of the limit when the implant object is out of the limit. .
  • the object is a dental implant planning method comprising the steps of: generating a multi-dimensional image model corresponding to a specific tooth arrangement; Placing at least one object constituting an implant on the image model; Grouping a plurality of objects among implant objects arranged in the image model; And when moving or rotating the position of the object, it may be achieved by a dental implant planning method comprising the step of changing the position of the grouped objects together.
  • the object constituting the implant includes a virtual crown and a fixture, and when the size of the virtual crown is modified, if the center of the virtual crown is changed according to the size of the virtual crown, the position of the fixture is changed to the virtual crown. You can further move together.
  • identifying natural teeth and occlusal surface corresponding to the tooth arrangement And setting up, down, left, and right limits in which the objects can be placed based on the identification result.
  • the change may be performed within the limit.
  • restriction range may be set based on at least one of the location of the maximum ridge, neural tube, and alveolar bone of the tooth adjacent to the virtual crown.
  • the occlusal surface may be identified to limit vertical movement of the virtual crown.
  • the size of the virtual crown may be enlarged or reduced in at least one direction with respect to the interface of the maximum air melting portion of the tooth adjacent to the virtual crown.
  • the method may further include displaying a maximum wind melting part of natural teeth or artificial teeth in the image model.
  • the object of the present invention can also be achieved by a computer-readable recording medium recording a program for executing the dental implant planning method.
  • the object is a device for dental implant planning, comprising: a model generator for generating a multi-dimensional image model corresponding to a specific tooth arrangement; A grouping setting unit that groups a plurality of objects among implant objects arranged in the image model; And an object corrector for changing the position of the grouped objects together when the object is moved or rotated.
  • the apparatus may further include a limiter configured to identify natural teeth and occlusal surfaces corresponding to the tooth arrangements and to set upper, lower, left, and right limits on which the objects may be placed based on the occlusal surfaces;
  • the object corrector may perform a change within the limit when the object is moved or rotated.
  • the object rectifier may move the position of the fixture together with the virtual crown when the center of the virtual crown is changed in accordance with the modification of the size of the virtual crown in the state where the virtual crown and the fixture are set to be grouped.
  • the object corrector may enlarge or reduce the size of the virtual crown in at least one direction on the basis of the boundary between the maximum wind melting part of the teeth adjacent to the virtual crown.
  • the object corrector may request to reset the range by outputting one or more signals of a message, voice, or vibration when the range of movement or rotation of the objects is out of the limit.
  • an implant library for storing the objects constituting the implant;
  • an object generation unit generating at least one object from the implant library or importing a wax-up result and placing the object in a model corresponding to the dental array.
  • the apparatus may further include a wind melting part display unit configured to perform image analysis on the tooth arrangement to detect a maximum wind melting part of a natural tooth or an artificial tooth, and to display the maximum wind melting part in the image model.
  • a wind melting part display unit configured to perform image analysis on the tooth arrangement to detect a maximum wind melting part of a natural tooth or an artificial tooth, and to display the maximum wind melting part in the image model.
  • FIG. 1 is a control block diagram of an apparatus for dental implant planning in accordance with one embodiment of the present invention.
  • FIG 2 illustrates an example of an implementation screen of an implant planning apparatus according to an embodiment of the present invention.
  • FIG 3 illustrates an example of an implementation screen of an implant planning apparatus according to another embodiment of the present invention.
  • Figure 4 is an example showing the maximum air melting portion of the natural or artificial teeth in the model of the patient tooth arrangement according to an embodiment of the present invention.
  • FIG. 5 is a flow chart of a dental implant planning method according to another embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating a method for moving or rotating a position of an implant object.
  • FIG. 7 is a flowchart illustrating a method of modifying the size of an implant object in a dental implant planning method according to another embodiment of the present invention.
  • FIG. 8 is a flowchart illustrating a method of moving or rotating an implant object in a dental implant planning method according to another embodiment of the present invention.
  • an apparatus for dental implant planning includes a model generator 10, a grouping setting unit 20, and an object corrector 30.
  • the model generator 10 generates a multi-dimensional image model of the patient's tooth arrangement for implant planning, where the model of the patient's tooth arrangement can be a 2D or 3D-based model.
  • Models of the patient's tooth arrangements are generated based on the patient's jaw or teeth image, which can be constructed by matching X-rays, CT, MRI, panoramic and scanned prostheses or individually digitized prostheses to anatomical structures.
  • the apparatus for dental implant planning according to another embodiment of the present invention further includes a patient library 11 storing an image or a model of a patient's jaw or teeth, and the model generator 10. Displays an image or a model corresponding to the user's selection in the patient library 11 on the screen.
  • the grouping setting unit 20 is for setting or releasing the implant objects arranged in the patient's model. When the plurality of implant objects is grouped, the grouping setting unit 20 is recognized as one object.
  • the implant object refers to the object constituting the implant
  • the narrow meaning includes a virtual crown and fixtures
  • the broad meaning includes all kinds of implant objects, such as abutment (abutment) and sleeve can do.
  • the object correction unit 30 is for modifying the position or size of the implant object and moves, rotates, or modifies or changes the position of the object according to a user's manipulation command.
  • the object modifier 30 modifies the grouping-set objects together or only individual objects according to whether the objects are grouped.
  • the object adjuster 30 recognizes the objects by grouping them into one object, so that the relative positions between the objects are maintained as they are when moving or rotating the position. This is very convenient because you can modify other related objects simultaneously in one operation without having to reposition them.
  • an apparatus for dental implant planning may further include an implant library 50, an object generator 40, and a user interface 60.
  • the implant library 50 stores various implant objects by company, type, size, and length.
  • the object generator 40 is for generating objects constituting the implant, and generates a corresponding object from the implant library 50 or according to a user's selection, or imports a wax-up result. To place it on the screen.
  • the user interface 60 is for receiving a command of a user and may be implemented as a mouse, a keyboard, a button, a keypad, and / or a GUI on the screen.
  • FIG 2 illustrates an example of an implementation screen of an implant planning apparatus according to an embodiment of the present invention.
  • an implant object is represented on a model related to a tooth arrangement of a patient on an implementation screen of an implant planning apparatus.
  • the implant object includes a virtual crown 1, a fixture 2 and a strut 3 and is disposed at each position according to a user's selection or input.
  • the implementation screen of the implant planning apparatus of FIG. 2 includes a plurality of user GUI menus, and most GUI menus are represented by icons.
  • the left side of the screen of FIG. 2 includes a grouping setting menu regarding position movement and rotation of the virtual object.
  • the corresponding function is activated.
  • the corresponding function is deactivated. Intuitively tells you whether your implant objects are grouped.
  • the implementation screen of the implant planning apparatus includes a menu icon 61a for moving or rotating the implant object.
  • the implementation screen of the implant planning apparatus is represented by an arrow 61a or the like around the implant object, so that the user of the corresponding icon 61a is displayed. Click or drag one side to move or rotate it to the desired location.
  • FIG. 2 when the implant object is rotated to the left and the virtual crown 1 is rotated during grouping, other objects such as the fixture 2 are rotated at the same time.
  • a represents a central axis of the virtual crown 1, and when rotated or moved, other objects move or rotate by the same size according to the movement of the corresponding central axis.
  • the centerlines of the implant objects do not necessarily need to coincide.
  • the centerline of the implant objects may be slightly displaced according to the patient's condition. In this case, the centerline is moved and rotated as it is.
  • the grouping setting function of the implant object may be implemented only when the specific object moves or rotates, and does not operate when the remaining objects move or rotate.
  • the above embodiment usually takes into account the general planning procedure of determining the position of other objects such as the fixture 2 after the position of the virtual crown 1 is determined.
  • a menu icon for simultaneously moving or rotating the grouped objects is displayed on the screen to simultaneously move or rotate the grouped objects only through the corresponding menu icon, and through other input means. It can be implemented to modify only the object when a move or rotate command is input.
  • the above embodiment has an advantage that the user can easily modify and manipulate the objects according to the user's intention because it depends on the input icon of the command to modify the objects at the same time or only one object.
  • FIGS. 1 and 3 an apparatus for dental implant planning according to another embodiment of the present invention will be described with reference to FIGS. 1 and 3.
  • an apparatus for dental implant planning includes a model generator 10, a grouping setting unit 20, and an object corrector 30, and an object generator. 40, the patient library 11, the implant library 50, or the limiter 70 may be further included. Description of the similar configuration to the above-described embodiment will be omitted in the overlapping range.
  • An apparatus for dental implant planning may perform a function of modifying the size of an implant object.
  • the modification of the size of the virtual crown among the implant objects will be described as an example.
  • the object corrector 30 modifies the size of the virtual crown based on a boundary between the virtual crown and the adjacent teeth when a command for modifying the size of the virtual crown is input by the user.
  • the interface with the adjacent teeth includes the interface with the ridges of the adjacent teeth, and the object correction unit 30 does not cross the corresponding boundary when modifying the size of the virtual crown.
  • the command for modifying the size of the virtual crown may be input by an operation of pulling or pushing the outline of the virtual crown with a mouse.
  • the size of the virtual crown is enlarged or reduced in response to the user input.
  • the implant objects are grouped, other objects may move together if the position of the virtual crown is changed according to the modification of the size of the virtual crown.
  • the implant objects are grouped, when the position of the virtual crown is not changed, for example, when the central axis is not changed, the positions of other objects are not changed.
  • the limit setting unit 70 identifies the natural teeth and the occlusal surface based on the image analysis of the teeth, and sets or releases the upper, lower, left, and right limits on which the implant objects can be placed. 60) can enable or disable the restriction setting function. Meanwhile, according to another exemplary embodiment of the present invention, the limit setting function is not selected by the user interface unit 60 but is always activated so that the limit setting function is automatically moved, rotated, and modified within the limit range. In the following embodiment of the present invention will be described as an example that can be activated or deactivated the limited range setting function by the user's selection.
  • the object correction unit 30 allows modifications to be made within a range not to deviate from the upper, lower, left, and right limits when the position movement, rotation, or size of the implant object is activated when the movement range limit setting function of the limit setting unit 70 is activated. .
  • the upper, lower, left, and right limits are set based on the positions of the maximum abundance, neural tube, and alveolar bone of the virtual crown and the adjacent teeth (natural teeth, artificial teeth, or virtual crowns) to be implant planning.
  • an icon or a message is displayed on the screen or a sound or voice is output to indicate that the correction command is out of the limit.
  • the object corrector 30 is modified according to a user's command without being limited to the moving range when the object is modified.
  • an implementation screen of an implant planning apparatus includes a menu for setting a group and modifying the size of a virtual crown.
  • the user can modify the virtual crown size (1) and the grouping setting function as a single icon.
  • the function is activated.
  • the activation and deactivation are expressed differently, the user can intuitively know whether the corresponding function is activated.
  • an icon 62a for adjusting the size of the virtual crown 1 is generated around the implant object.
  • the user can zoom in or out in one or both directions by clicking or dragging the icon.
  • b represents an interface with adjacent teeth, and the object corrector 30 restricts not to cross the corresponding boundary when the virtual crown is enlarged when the restriction setting function of the restriction setting unit 70 is activated.
  • FIG. 3 shows an example in which the fixture 2 and the post 3 are moved together as the center position of the virtual crown 1 moves.
  • the object correction unit 30 recognizes the objects by grouping them into one object. If the size of the virtual crown is changed and the central axis is moved, other objects are moved at the same time so that the relative position between the objects remains the same. This makes it very convenient to modify other objects at the same time in a single operation without having to move them or adjust their relative position.
  • the implant planning apparatus may further include a wind melting part display unit (80).
  • the melting part display unit 80 detects the maximum melting part of natural teeth or artificial teeth through tooth image analysis and displays the maximum melting part of each tooth on a 2D or 3D image model.
  • the melter display unit 80 according to the present invention maintains and displays the maximum melter of each tooth in the changed slice even if the position of the slice is changed in the 2D or 3D model. Conventionally, when the position of the slice is changed, the maximum outline of the tooth in the slice is displayed. In this case, when determining the position of the implant object, the position of the implant is adjusted again to check the image to check whether the position of the implant object is properly selected. It was very cumbersome to have to check.
  • FIG. 4 is an example of a screen displaying a maximum wind melting part of a natural tooth or an artificial tooth in a model of a patient tooth arrangement according to an embodiment of the present invention.
  • the maximum air melted portion of each tooth is indicated by a yellow line. The maximum air melted portion of the tooth is always maintained and displayed to improve accuracy in selecting and locating the implant during implant planning. Can be.
  • the maximum air melting part of each tooth is displayed as it is, not the maximum outside of each tooth in the slice, so that the position of the implant object is properly positioned even if the user does not change the slice. You can check if it is adjusted.
  • FIG. 5 is a flowchart illustrating a dental implant planning method according to another embodiment of the present invention
  • FIG. 6 is a flowchart illustrating a method of moving or rotating a position of an implant object.
  • a dental implant planning method generates an image model, for example, a 2D or 3D model of a patient's tooth arrangement (S10), and an implant object (eg, a virtual crown, Fixtures, struts, sleeves, etc.) are generated and placed (S11).
  • an implant object eg, a virtual crown, Fixtures, struts, sleeves, etc.
  • FIG. 7 is a flowchart illustrating a method of modifying the size of an implant object in a dental implant planning method according to another embodiment of the present invention.
  • natural teeth or occlusal surfaces are identified in a model relating to a tooth arrangement of a patient (S30).
  • the implant object is generated or wax-up is imported according to a user's selection or input (S31).
  • the maximum wind melting part of each tooth may be displayed in the model of the tooth arrangement. Even if the position of the axial slice is changed by the user's selection, the maximum wind melting part of each tooth is always maintained and displayed. Through this, the user can intuitively know the maximum wind melting part of each tooth even if the position of the slice is changed, so that the positioning of the implant object can be easily confirmed.
  • the limit of vertical movement of the virtual crown (S32).
  • the placement constraints of the virtual crowns are set based on the location of the maximum ridges, neural tubes, and alveolar bones of the teeth adjacent to the virtual crowns.
  • identifying the maximum natural teeth outer edge may provide a notification function to notify the user when the virtual crown invaded the maximum natural teeth, and to prevent alveolar bone invasion above or below a predetermined value (for example, 1mm) from the alveolar bone
  • a predetermined value for example, 1mm
  • the vertical movement of the virtual crown is restricted, and the interface between the natural teeth, the artificial teeth, and the maximum wind melting part of the virtual crown is the boundary between the left and right movement of the implant virtual crown.
  • the interface is displayed on the tooth model so that the interface can be intuitively recognized by the user so that the accuracy of positioning can be improved by referring to the implant object.
  • the limited range setting function may be automatically set and applied unconditionally when the implant object is moved, rotated, or modified, but may be activated or deactivated by a user's selection.
  • the setting function of the above-mentioned restriction range is activated or deactivated by the user's selection
  • the data (upper, lower, left, right) is calculated in advance when creating and placing the implant object, and then the user's restriction range is It can be activated or deactivated depending on whether the setting function is selected.
  • the limited range setting function is selected by the user
  • the limited range of the implant object may be calculated and the corresponding function may be activated. Therefore, although FIG. 7 illustrates that the limitation range of the implant object is set in step S32, the problem of which step to set may be changed in various orders as necessary. For example, in FIG. It may be changed, or S32 may be performed between steps S34 and S35. Referring to FIG.
  • the object correction unit 30 checks whether the limit setting function is activated (S34), and if the limit setting function is When activated, the virtual crown is enlarged or reduced in one or both directions within a range not exceeding the upper, lower, left, and right limits (S35). On the other hand, if the limited range setting function is deactivated, the size is increased or decreased vertically, vertically, horizontally or vertically according to a command of the user interface unit without being limited to the limited range (S36).
  • FIG. 8 is a flowchart illustrating a method of moving or rotating an implant object in a dental implant planning method according to another embodiment of the present invention. Descriptions overlapping with the above-described embodiments will be omitted as necessary.
  • natural teeth or occlusal surfaces are identified in a model relating to a tooth arrangement of a patient (S40).
  • the implant object is generated or wax-up is imported according to a user's selection or input (S41).
  • the limit range of vertical movement of the implant object is set (S42).
  • the extent of the implant object is set based on the location of the maximum ridge, neural tube, and alveolar bone of the tooth adjacent to the virtual crown.
  • the vertical movement of the virtual crown is restricted, and the interface between the natural teeth, the artificial teeth, and the maximum wind melting part of the virtual crown is the boundary between the left and right movement of the implant virtual crown.
  • the interface can be intuitively recognized by the user, thereby increasing the accuracy of the positioning of the implant object.
  • the position correction command of the virtual crown is input from the user (S43), check whether the limit range setting function is activated (S44). If the limit range setting function is activated, it is possible to move and rotate within the limit range (S45), and if the limit range setting function is deactivated, it is free to move and rotate according to the user's command (S46).
  • the grouping is set by checking whether the grouping is set when the virtual crown is moved and rotated (S47), the other grouping objects are moved or rotated together (S48). If no grouping is set, only the virtual crown is modified.
  • the panoramic image model is illustrated as an example of the screen for tooth implant planning of FIGS. 2 and 3 of the above-described embodiments of the present invention, the axial, coronal, and sagittal are implemented by implementing the 3D model.
  • Four views such as cross-sectional views and cross-sectional views can be represented, and when an object is modified on one screen, the modified contents can be immediately applied to other views.
  • the device for dental implant planning of the present invention may be implemented as a device having at least one programmable processor coupled to a memory device including at least one type of memory, such as RAM, ROM, or the like.
  • the processor may be a general purpose or special purpose processor, and the apparatus and method for dental implant planning according to an embodiment of the present invention may be implemented in digital electronic circuitry, or computer hardware, firmware, software, or a combination thereof.
  • the invention can also be embodied as a computer program product for providing an implant planning method according to the invention when executed on a computer.
  • Such computer program product is embodied as a storage medium containing machine readable code for execution by a programmable processor.
  • the present invention may be embodied as a machine readable storage medium including a computer program product for providing instructions for executing a planning method as described above when executed on a computer.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
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Abstract

La présente invention concerne un procédé pour une planification d'implant dentaire, un appareil pour celui-ci, et un support d'enregistrement sur lequel ce dernier est enregistré. L'appareil pour une planification d'implant dentaire selon la présente invention applique une fonction de groupement à des objets d'implant, ce qui permet aux objets groupés d'être déplacés ou mis en rotation conjointement dans un modèle 2D ou 3D pour l'agencement de dents permettant la planification des implants, et peut, par conséquent, réduire la complexité de manipulation des objets d'implant, est plus pratique pour un utilisateur, et peut augmenter la précision pendant la planification de l'implantation.
PCT/KR2015/013260 2014-12-31 2015-12-04 Procédé pour planification d'implant dentaire, appareil pour celui-ci, et support d'enregistrement sur lequel ce dernier est enregistré Ceased WO2016108454A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US15/541,204 US11195623B2 (en) 2014-12-31 2015-12-04 Method for dental implant planning, apparatus for same, and recording medium having same recorded thereon
EP15875548.8A EP3241522B1 (fr) 2014-12-31 2015-12-04 Procédé pour la planification d'implant dentaire, appareil pour celui-ci, et support d'enregistrement sur lequel ce dernier est enregistré
CN201580070938.3A CN107430634B (zh) 2014-12-31 2015-12-04 牙种植计划方法、装置及其记录介质

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20140195209 2014-12-31
KR10-2014-0195209 2014-12-31
KR1020150067951A KR101666982B1 (ko) 2014-12-31 2015-05-15 치과용 임플란트 플래닝 방법, 이를 위한 장치 및 이를 기록한 기록매체
KR10-2015-0067951 2015-05-15

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WO2016108454A1 true WO2016108454A1 (fr) 2016-07-07

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CN111933252A (zh) * 2020-08-12 2020-11-13 杭州深睿博联科技有限公司 一种牙位检出和缺失牙标记方法及装置

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KR20130097216A (ko) * 2010-10-01 2013-09-02 쓰리세이프 에이/에스 의치의 모형 제작 및 제작
KR20120131063A (ko) * 2011-05-24 2012-12-04 (주)강원지역대학연합기술지주회사 3차원 역공학 기술을 이용한 치아 형태 또는 부피 변화 측정 방법 및 장치

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* Cited by examiner, † Cited by third party
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CN111933252A (zh) * 2020-08-12 2020-11-13 杭州深睿博联科技有限公司 一种牙位检出和缺失牙标记方法及装置
CN111933252B (zh) * 2020-08-12 2023-08-04 杭州深睿博联科技有限公司 一种牙位检出和缺失牙标记方法及装置

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