KR20210004432A - Device for making a partial denture frame and operating method thereof - Google Patents

Abstract

The present invention relates to a device for making a partial denture frame. The device includes: a memory; a 3D scanner included in or functionally connected to the electronic device; and a processor electrically connected to the memory and the 3D scanner. An instruction can be stored in the memory. When the instruction is executed, the processor acquires scan data on a tooth model corresponding to a patient′s tooth from the 3D scanner, determines the positions of a defect and a clasp based on the scan data, and determines the structure of the partial denture frame by performing block-out and relief based on the positions of the tooth defect and the clasp. Various other embodiments grasped through the specification are also possible.

Description

A device for manufacturing a local denture frame and its operation method {DEVICE FOR MAKING A PARTIAL DENTURE FRAME AND OPERATING METHOD THEREOF}

The embodiments disclosed in the present document relate to a system for manufacturing a local denture frame and a method for creating the same, and to a system for manufacturing a local denture frame capable of generating dentures having the same quality and a method for generating the same.

If the tooth or the surrounding tissue is damaged, the function and aesthetics of the tooth can be restored through prosthetic treatment using an artificial prosthesis. When one or more teeth are partially damaged, a crown covering the upper side of the damaged tooth may be manufactured and used as a prosthesis. However, if one or more teeth are missing, dentures (dentures) that connect both teeth and the missing part may be used, as if a leg is constructed using the surrounding teeth as a pillar.

Dentures (dentures) are local dentures (partial dentures) that can be used by patients with some remaining teeth, and total dentures (complete dentures) that restore teeth and absorbed dental arches (gum) in the absence of any teeth. denture). In particular, the local denture may refer to a prosthesis that can be removed or attached to a patient with a partially lost tooth or defective tissue in the dental arch. Local dentures can be applied to a variety of situations, from loss of 1 tooth of the maxilla and mandible to remaining 1 tooth.

The Flask Investment Technique, a conventional denture manufacturing method, performs a complex series of processes such as measuring the mastication function, impression of the dental arch and surrounding tissues in the treatment area, and the production of a design model and a prototype model. Since it goes through a series of complex processes like the above process, the time required is not small, and the labor of the dental technician is required. Accordingly, according to the conventional technique, there is a problem that labor costs increase and productivity decreases. In addition, the quality of dentures may differ depending on the skill level of the dental technician and the dentist.

The embodiments disclosed in this document have been devised to overcome the above-described difficulties, and not only can simplify the process for manufacturing dentures, but also prevent the phenomenon that the quality of dentures depends on the skill level of a dental technician and a dentist. Its main purpose is to provide a frame manufacturing apparatus and its operation method for manufacturing dentures with uniform quality.

In an apparatus for manufacturing a frame for local dentures according to an embodiment of the present invention, comprising: a memory; A 3D scanner included in the electronic device or functionally connected; And a processor electrically connected to the memory and the 3D scanner, wherein the memory includes, when executed, the processor: obtaining scan data of a tooth model corresponding to the patient's teeth from the 3D scanner; Determining the location of the missing part and the clasp based on the scan data; And determining a structure of a local denture frame by performing blockout and relief based on the position of the tooth defect and the position of the clasp. The instruction may be stored.

It further includes an interface (or communication circuit) for communicating with an external device that processes the local denture frame, and the processor may transmit data corresponding to the determined structure of the local denture frame through the interface.

The 3D scanning unit may scan the tooth model at various angles, generate a continuous set of data, and form a 3D image of the tooth model based on the set of data.

The processor may check the location and number of missing teeth and the area of the missing part based on the missing part.

The processor determines the abutment close to the defective part as a position where the clip is to be fixed, and the clasp is fixed to the bottom of the abutment from 0.25 (mm) to 0.5 (mm) at the thickest portion of the abutment. You can determine the location of the details.

The processor may perform parallel block out, formation block out, and arbitrary block out.

The processor may set the structure of the frame in the form of a tooth-mucosal support local denture when all posterior teeth are removed and there is no abutment behind the defective part.

When only some of the plurality of posterior teeth are removed and there is an abutment behind the defective part, the processor may set the structure of the frame in the form of a tooth support local denture.

The processor may set the saddle based on the set frame structure.

The processor may set the saddle in any one of a grid type, a mesh type, a bead type, and a nail bead type.

The apparatus for fabricating a frame for local dentures according to an embodiment of the present invention and a method of operating the same can simplify a process for fabricating dentures and provide dentures to consumers with relatively uniform quality.

1 is a view showing the configuration of a frame manufacturing apparatus for local dentures according to an embodiment of the present invention.
2 is a diagram showing a logical structure of an apparatus for manufacturing a local denture frame according to an embodiment of the present invention.
3 is a diagram illustrating an operation of scanning a tooth model by an apparatus for manufacturing a local denture frame according to an embodiment of the present invention.
4 is a diagram showing a survey operation performed by the apparatus for manufacturing a local denture frame according to an embodiment of the present invention.
5 is a diagram illustrating an operation of performing blockout and relief by an apparatus for manufacturing a local denture frame according to an embodiment of the present invention.
6 illustrates an operation of determining a structure of a local denture frame according to an embodiment of the present invention.
7 shows an operation of processing a local denture frame according to an embodiment of the present invention.
8 shows a frame for local dentures completed according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. The present invention is not limited to a specific embodiment, and it should be understood that various modifications, equivalents, and/or alternatives of the embodiments of the present invention are included. In connection with the description of the drawings, similar reference numerals may be used for similar elements.

In this document, expressions such as "have", "may have", "include", or "may contain" are the presence of corresponding features (eg, elements such as numbers, functions, actions, or parts). And does not exclude the presence of additional features.

In this document, expressions such as "A or B", "at least one of A or/and B", or "one or more of A or/and B" may include all possible combinations of items listed together. . For example, “A or B”, “at least one of A and B”, or “at least one of A or B” includes (1) at least one A, (2) at least one B, Or (3) it may refer to all cases including both at least one A and at least one B.

Expressions such as "first", "second", "first", or "second" used in this document may modify various elements regardless of their order and/or importance, and It is used to distinguish it from the component and does not limit the component. For example, without departing from the scope of the rights described in this document, a first component may be referred to as a second component, and similarly, a second component may be renamed to a first component.

The expression "configured to" used in this document is, for example, "suitable for", "having the capacity to" depending on the situation. It can be used interchangeably with ", "designed to", "adapted to", "made to", or "capable of". The term "configured to (or set) to" does not necessarily mean only "specifically designed to".

In this document, transmitted and received between the first electronic device(s) and the second electronic device(s), for example, "command", "instruction", "control information", "message", " Information", "data", "packet", "data packet", "intent" and/or "signal" are not limited to their expressions, but are not limited to any human-recognizable idea or specific electrical representation (eg: Digital code/analog physical quantity) or may refer to itself. It will be apparent to those skilled in the art to which the invention disclosed in this document may be interpreted in various ways depending on the context in which the exemplary expressions listed above are used.

Terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in a general dictionary may be interpreted as having the same or similar meaning as the meaning in the context of the related technology, and unless explicitly defined in this document, they may be interpreted in an ideal or excessively formal meaning. It is not interpreted. In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

1 is a view showing the configuration of a frame manufacturing apparatus 100 for local dentures according to an embodiment of the present invention.

Referring to FIG. 1, an apparatus 100 for manufacturing a local denture frame according to an embodiment of the present invention includes a bus 110, a display 120, a communication circuit 130, a database 140, a memory 150, and I It may include an /O interface 160 and a processor 170. In another embodiment, the apparatus 100 for manufacturing a local denture frame may omit at least one of the above components or may additionally include other components. The local denture frame manufacturing apparatus 100 may be implemented as a computer that can access a remote server or terminal through a network. For example, the computer may include a notebook equipped with a web browser, a desktop, a laptop, and the like.

The bus 110 may electrically connect the components 120 to 170 to each other. Bus 110 may include circuitry for communication (eg, control messages and/or data) between components 120 to 170.

The display 120 may display text, images, videos, icons or symbols constituting various contents. The display 120 may include a touch screen, and may receive a touch, gesture, proximity, or hovering input using an electronic pen or a part of the user's body.

For example, the display 120 is a liquid crystal display (LCD), a light emitting diode (LED) display, an organic light emitting diode (organic LED) display, or a microelectromechanical systems (MEMS) display, or electronic paper. It may include a display. The display 120 may be included in the platform server 150 to be implemented, or may be implemented separately from the platform server 150 but may be operatively connected to the platform server 150.

The communication circuit 130 may establish a communication channel between the platform server 150 and external devices. For example, the communication circuit 130 may communicate with external devices by accessing the network 180 through wireless communication or wired communication.

The network 180 may include at least one of a telecommunications network, a computer network, the Internet, and a telephone network. The wireless communication protocol for accessing the network 180 is, for example, LTE (Long-Term Evolution), LTE-A (LTE Advanced), CDMA (Code Division Multiple Access), WCDMA (Wideband CDMA), UMTS (Universal Mobile Telecommunications System), WiBro (Wireless Broadband), GSM (Global System for Mobile communications), or 5G standard communication protocol may be used.

The database 140 may be implemented on the memory 150 or on a separate storage medium. The database 140 according to an embodiment of the present invention may store a patient's authoring function, a model for a gum, a surrounding tissue, and the like.

According to various embodiments, since data stored in the database 140 is sensitive information of a customer, it may be distributed and stored in a blockchain network to improve security in the use of the information. When the database 140 is distributed and stored in the blockchain network, the history of transmission, modification, deletion, addition of information included in the database 140 can be more securely managed in the corresponding blockchain network.

The memory 150 may include volatile and/or nonvolatile memory. The memory 150 may store commands or data related to at least one other component in the local denture frame manufacturing apparatus 100. For example, when executed, the memory 150 may store instructions that cause the processor 170 to perform various operations described herein. For example, the command may be included in a package file of an application program.

The I/O interface 160 may perform a role of transmitting commands or data input from a user or another external device to other components of the local denture frame manufacturing apparatus 100. For example, scan data of a tooth model provided from a 3D scanner may be transmitted to the apparatus 100 for manufacturing a local denture frame through the I/O interface 160. According to various embodiments, the 3D scanner may be connected through the I/O interface 160 and may be included as a component of the local denture frame manufacturing apparatus 100. The I/O interface 160 may be implemented as hardware or software, and may be used as a concept including a user interface (UI) and a terminal for communication with other external devices.

The processor 170 may include at least one of a central processing unit (CPU), an application processor (AP), and a communication processor (CP). The processor 170 is electrically connected to the memory 150, the display 120, and the communication circuit 130 through the bus 110, and during operation, different configurations according to instructions, programs, or software stored in the memory 150 It is possible to perform operations or data processing related to the control and/or communication of elements. Accordingly, the execution of the command, application program, or software may be understood as an operation of the processor 170.

The operations of the processor 170 are representative examples, and the technical idea of the present invention is not limited thereto. For example, the operation of the "local denture frame manufacturing apparatus 100" described directly or indirectly in the present specification may be understood as an operation of the processor 170 included in the corresponding "local denture frame manufacturing apparatus 100".

Hereinafter, various embodiments of the present invention implemented in an environment including an individual subject as described above will be described.

2 shows a functional block diagram of an apparatus 100 for manufacturing a local denture frame according to an embodiment of the present invention. Each block shown in FIG. 2 may be understood as functionally including at least one of the components 120 to 170 shown in FIG. 1. For example, the scan unit 210 may include an external 3D scanner and an I/O interface 160, and the irradiation unit 230, the work unit 250, and the processing unit 270 operate the functions of the processor 170 Can represent.

The frame manufacturing apparatus 100 for local dentures may include a scan unit 210, an irradiation unit 230, a working unit 250, and a processing unit 270.

The scanning unit 210 may scan a tooth model corresponding to the patient's teeth.

The dentist can take an alginate impression corresponding to the patient's teeth using a ready-made tray, pour gypsum on the obtained alginate impression, and create a study model and deliver it to the dental laboratory. The dental technician can use the study model to produce an individual tray, and the dentist can take an impression with rubber material and deliver it to the dental technician again to obtain a more precise impression. The dental technician may create a master model based on the impression transmitted from the dentist. The tooth model scanned by the scanning unit 210 may refer to a master model.

The scanning unit 210 may be a 3D scanner. The scan unit 210 may scan the tooth model from various angles, and may generate scan data corresponding to the tooth model based on the scan result. In this case, the scanning unit 210 may generate a continuous set of data by dividing each part of the tooth model at various angles.

A process of forming a 3D image of a tooth model based on the generated continuous data set may be referred to as registration. Matching is the process of mapping two or more data sets into one coordinate system. A coordinate system can be assigned to each data obtained by a scan or other method. Some of the scan data may be allocated to a fixed system, and the remaining data may be allocated to a moving system. The mobile system can be transformed in virtual space to converge on a fixed system. This transformation may include a rotation transformation or a translation transformation.

The plurality of scan data for the tooth model is data obtained by scanning different portions of the tooth model, but each of the plurality of scan data may include a portion overlapping each other. In the registration, a portion of a plurality of scan data overlapping each other may be matched, and a 3D image of a tooth model may be generated based on the plurality of scan data.

The irradiation unit 230 may survey the current state of the teeth based on the scan data.

The irradiation unit 230 according to an embodiment of the present invention may check the location of the defective portion based on the scan data. For example, the irradiation unit 230 may check the location, number, and area of the missing teeth.

Also, the irradiation unit 230 may determine the location of the clasp based on the scan data. The clasp refers to a support that supports local dentures so that they can be fixed inside the oral cavity using residual teeth (hereinafter, abutments). For example, the irradiation unit 230 may determine the abutment closest to the defect as a position where the clip is to be fixed. In addition, the irradiation unit 230 may determine the detailed position of the clasp so that the clasp can be fixed at 0.25 (mm) to 0.5 (mm) below the thickest portion of the remaining tooth.

The operation unit 250 may perform blockout and relief operations based on the scan data.

Blockout is the work of filling out the under-cut of the tooth. Block-out may include parallel block-out, shaped block-out, and arbitrary block-out. The parallel block-out may be applied to an undercut of the cervical region and an undercut of the dental arch tissue (eg, a region through which the frame passes). Formation blockout is the work of forming so that the position and shape of the clasp can be known. The forming blockout can be applied to the teeth near the defect. Arbitrary blockout can be applied to dental arches, undercuts under the site related to denture design, tissue undercuts and interdental voids independent of denture design. Relief is an operation that prevents direct contact with the tissue in order to reduce the irritation applied by the main connecting device to the tissue.

In addition, the working unit 250 may set the structure of the frame.

The working unit 250 may set the structure of the frame differently based on the location of the defect and the occlusal pressure. The occlusal pressure refers to the force applied per unit area of the occlusal surface when the maxillary and mandible occlude. For example, when all posterior teeth are removed and there is no abutment behind the defect, the working unit 250 sets the structure of the frame in the form of tooth-mucosal support local dentures that can be obtained from the abutment and edentulous alveolar mucosa. I can. For another example, when only some of the plurality of posterior teeth are removed and there is an abutment behind the defect, the working unit 250 does not apply the occlusal pressure to the tissue of the defect, and the tooth support is transmitted only to the abutment on both sides of the defect. The structure of the frame can be set in the form of local dentures.

In addition, the working unit 250 may set a saddle based on the set frame structure. The saddle is a structure that appears on the local denture, and may include a lattice type, a mesh type, a bead type, and a nail bead type. The working unit 250 may adjust the amount of relief through the birds. The working unit 250 may determine the size of the holes of the birds. In addition, the working unit 250 may set the position of the stopper so that the stopper is placed in a tooth adjustment position of a portion other than the tooth tooth.

The processing unit 270 may fabricate a local denture frame based on the processed data. For example, the processing unit 270 may be processed with a 5-axis milling machine to manufacture a local denture frame.

3 shows an operation of the apparatus 100 for manufacturing a local denture frame according to an embodiment of the present invention to scan a tooth model 330.

The apparatus 100 for manufacturing a local denture frame may scan the tooth model 330 using the 3D scanner 310. Referring to FIG. 3, the 3D scanner 310 may scan the tooth model 330 at various angles using three cameras, and may generate scan data. In addition, the frame manufacturing apparatus 100 for local dentures may generate a 3D image of the tooth model 330 by matching the generated scan data. However, this is only an example and is not limited thereto.

4 illustrates a survey operation performed by the apparatus 100 for manufacturing a local denture frame according to an embodiment of the present invention. Referring to FIG. 4, scan data may correspond to a patient's mandible.

The local denture frame manufacturing apparatus 100 may check the location of the defective portion based on the scan data. For example, the frame manufacturing apparatus 100 for local dentures has a first defect 430 that is a part of the right molar (large molar) and a second defect that is a part of the left premolar (small molar) based on the scan data. The positions of each of the units 450 can be checked.

In addition, the frame manufacturing apparatus 100 for local dentures can check the number of missing teeth. For example, the apparatus 100 for manufacturing a local denture frame may confirm that the first defect portion 430 has four differences and that the second defect portion 450 has two teeth defect.

Also, the apparatus 100 for manufacturing a local denture frame may determine the position of the clasp based on the scan data. For example, the frame manufacturing apparatus 100 for local dentures may determine the first premolar teeth 431 and the second premolar teeth 433 adjacent to the first defect 430 as the position of the clasp, and the second defect The third premolar tooth 451 and the first molar tooth 453 adjacent to 450 may be determined as the position of the clasp. The apparatus 100 for manufacturing a local denture frame according to an embodiment of the present invention includes the first premolar teeth 431, the second premolar teeth 433, the third premolar teeth 451, and the first molar teeth 453. The position of the clasp can be determined so that the clasp can be attached to the bottom of 0.25(mm) to 0.5(mm) in the thick part.

5 is a diagram illustrating a process in which the frame manufacturing apparatus 100 for local dentures performs blockout and relief according to an embodiment of the present invention.

The apparatus 100 for manufacturing a frame for local dentures may perform parallel blockout for the undercut 511 of the first premolar teeth 431 and the undercut 513 of the third premolar teeth 451.

The frame manufacturing apparatus 100 for local dentures performs formation block-out for the first premolar teeth 431, the second premolar teeth 433, the third premolar teeth 451 and the first molars 453 where clasps can be located. can do. For example, the apparatus 100 for manufacturing a local denture frame may perform a forming block out to display the clasp shape 530 around the third premolar 451.

In addition, the frame manufacturing apparatus 100 for local dentures may perform arbitrary block-out for the tissue undercut 550 irrelevant to the denture design.

Parallel block-out, formation block-out, and arbitrary block-out can be performed individually, and there is no order of progression.

Meanwhile, the apparatus 100 for manufacturing a frame for local dentures may perform relief on the protection target 570 in order to reduce irritation applied by the local dentures to the dental arch and dental tissue. The protection target 570 may include a first defect 430, a second defect 450, and a portion of the dental arch.

6 illustrates an operation of determining a structure of a local denture frame according to an embodiment of the present invention.

The frame manufacturing apparatus 100 for local dentures may determine the structure of the frame based on the first and second defects 430 and 450. For example, in the first defective part 430, all posterior teeth are removed and there is no abutment behind the defective part, but the frame manufacturing apparatus 100 for local dentures is in the vicinity of the first defective part 430. You can set the structure of the frame in the form. On the other hand, since the second defective part 460 has an abutment behind the defective part, the frame manufacturing apparatus 100 for local dentures can set the structure of the frame in the form of tooth-supporting local dentures near the second defective part 430. have. That is, the frame manufacturing apparatus 100 for local dentures may set a frame structure in which a tooth-mucosal support local denture shape and a tooth support local denture shape are mixed.

In addition, the frame manufacturing apparatus 100 for local dentures may set saddles based on the set frame structure. For example, the apparatus 100 for manufacturing a local denture frame may set the saddle 610 in a grid shape on the first defect 430. In addition, the frame manufacturing apparatus 100 for local dentures may set the position of the stopper based on the set frame structure. For example, the apparatus 100 for manufacturing a local denture frame may set the position of the stopper at a tooth adjustment position in the vicinity of the tooth region except for an extraction tooth.

7 shows a process of processing a local denture frame according to an embodiment of the present invention. 8 shows a frame for local dentures completed according to an embodiment of the present invention.

The apparatus 100 for manufacturing a frame for local dentures may process a frame for dentures by processing with a 5-axis milling machine based on a set frame structure, saddle, and the like. Furthermore, the frame manufacturing apparatus 100 for local dentures may manufacture a frame for local dentures in the form of FIG. 8.

The user can save time for each patient, dentist, and dental technician by using the local denture frame manufacturing apparatus 100, and can process the local denture frame of equal quality.

Electronic devices, servers, or external devices according to various embodiments of the present document described above may be, for example, smart phones, tablet PCs, mobile phones, video phones, desktop PCs, laptop PCs, personal digital assistants (PDAs), It may include at least one of a portable multimedia player (PMP), an MP3 player, a mobile medical device, a camera, or a wearable device.

According to various embodiments, the wearable device is an accessory type (for example, a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lens, or a head-mounted-device (HMD)), a fabric, or an integrated clothing type ( For example, it may include at least one of an electronic clothing), a body attachment type (eg, a skin pad or tattoo), or a living body implantable type (eg, an implantable circuit).

In some embodiments, the electronic device or the external device may be a home appliance. Home appliances include, for example, television, DVD player (Digital Video Disk player), audio, refrigerator, air conditioner, vacuum cleaner, oven, microwave oven, washing machine, air cleaner, set-top box, and home automation. It may include at least one of a home automation control panel, a security control panel, a TV box, a game console, an electronic dictionary, an electronic key, a camcorder, or an electronic frame.

In another embodiment, an electronic device, an external device, and a wearable device may include various medical devices (eg, various portable medical measuring devices (blood glucose meter, heart rate meter, blood pressure meter, or body temperature meter), magnetic resonance angiography (MRA), MRI. (magnetic resonance imaging), CT (computed tomography), imaging device, or ultrasonic device), navigation device, satellite navigation system (Global Navigation Satellite System), EDR (event data recorder), FDR (flight data recorder) ), automotive infotainment devices, home robots, or internet of things (e.g. light bulbs, sensors, electricity or gas meters, sprinkler devices, fire alarms, thermostats, street lights, exercise equipment) , Hot water tank, heater, boiler, etc.).

The embodiments disclosed in this document have been presented for description and understanding of the disclosed and technical content, and do not limit the scope of the present invention. Therefore, the scope of this document should be construed as including all changes or various other embodiments based on the technical idea of the present invention.

Claims (10)

In the electronic device,
Memory;
A 3D scanner included in the electronic device or functionally connected; And
And a processor electrically connected to the memory and the 3D scanner, wherein the memory, when executed, the processor:
Obtaining scan data of a tooth model corresponding to the patient's teeth from the 3D scanner;
Determining the location of the missing part and the clasp based on the scan data; And
The electronic device storing an instruction comprising; determining a structure of a local denture frame by performing blockout and relief based on the position of the tooth defect and the position of the clasp.
The method according to claim 1,
Further comprising an interface (or communication circuit) for communicating with an external device for processing a local denture frame,
The electronic device, wherein the processor transmits data corresponding to the determined structure of the local denture frame through the interface.
The method according to claim 1,
The 3D scanning unit scans the tooth model at various angles, generates a continuous set of data, and forms a 3D image of the tooth model based on the set of data.
The method according to claim 1,
The electronic device, wherein the processor checks the location and number of missing teeth and the area of the missing part based on the missing part.
The method according to claim 1,
The processor determines the abutment close to the defective part as a position to which the clip is to be fixed, and the clasp is fixed to the lower part of the abutment from 0.25 (mm) to 0.5 (mm). An electronic device that determines the location of the details.
The method according to claim 1,
The electronic device, wherein the processor performs parallel block-out, formation block-out, and random block-out.
The method according to claim 1,
The electronic device, wherein the processor sets the structure of the frame in the form of a tooth-mucosal support local denture when all posterior teeth are removed and there is no abutment behind the defective part.
The method according to claim 1,
The electronic device, wherein the processor sets the structure of the frame in the form of a tooth support local denture when only some of the plurality of posterior teeth are removed and there is an abutment behind the defective part.
The method according to claim 1,
The electronic device, wherein the processor sets the birds based on the set frame structure.
The method of claim 8,
The electronic device, wherein the processor sets the birds in any one of a grid type, a mesh type, a bead type, and a nail bead type.

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