KR101883954B1 - method for manufacturing digital denture and system thereof - Google Patents

Abstract

To improve precision and ease of installation, the present invention comprises: a first step of obtaining a three-dimensional image in which occlusion information between the target arch of a denture subject and the opposite arch opposite to the target arch and implantation information of a fixture implanted in the target arch are displayed through a planning part performing a design of a digital denture; a second step of setting a virtual coupling hole in the three-dimensional image to correspond to the implantation information of the fixture; a third step of matching the virtual coupling hole with preset design information of the digital denture according to a surface profile of the target arch and the occlusion information in the three-dimensional image; and a fourth step of manufacturing the digital denture, in which a coupling hole corresponding to the virtual coupling hole is formed to pass therethrough, by summing the design information of the virtual coupling hole and transmitting the obtained final design information of the digital denture to a manufacturing device.

Description

TECHNICAL FIELD The present invention relates to a digital prosthetic manufacturing method,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital prosthesis manufacturing method and a digital prosthesis manufacturing system, and more particularly, to a digital prosthesis manufacturing method and a manufacturing system in which accuracy and installation convenience are improved.

In general, a denture or prosthesis is an artificial periodontal tissue that restores the external shape and function artificially by replacing defective natural teeth.

In detail, if the natural tooth is left in a state of being lost, dentition distortion occurs in the adjacent tooth and the opposed tooth of the missing tooth, resulting in deformation of the facial shape, and the masticatory function is deteriorated and the inconvenience to daily life is increased. Further, when the loss state of the natural teeth is maintained for a long period of time, the alveolar bone surrounding the missing teeth is absorbed into the body, which makes it difficult to install the artificial periodontal tissue.

At this time, the denture or prosthesis is installed inside the oral cavity to restore the masticatory function and prevent the periodontal tissue from being deformed. The denture or the prosthesis can be divided into partial / complete dentures and partial / complete prosthetic teeth depending on the number of missing teeth.

On the other hand, the denture is installed by being attached to the surface of the gum by applying a dental adhesive to the inner joint groove, and the denture can be installed through a fixture mounted on the alveolar bone. At this time, since the dentition causes deformation of the gums or a large amount of foreign sensation due to the support of the gum, the amount of the prosthesis supported by using the alveolar bone is increasing.

Here, the prosthesis is provided with a coupling hole into which the cylinder device is embedded. In detail, the prosthesis can be installed by forming a hole in the alveolar bone, placing the fixture on the formed hole, and then connecting the cylinder device to the inserted fixture.

In this case, the cylinder device may include an abutment directly coupled to the fixture, and a support cylinder coupled to the abutment and embedded in the engagement hole, either integrally or dividedly.

The cylinder device and the fixture are formed at a plurality of positions according to the size of the prosthesis, and the prosthesis can be stably installed as each cylinder device is matched with one of the fixtures one-to-one.

At this time, conventionally, there has been a problem in that a positional deviation of a fitting hole is large by using a method of manufacturing a prosthesis, processing a fitting hole by predicting a placement position of the prosthesis in an oral cavity and a fixture placement position, and then filling the cylinder apparatus .

That is, after the cylinder device is fastened to the fixture, a prosthesis having a large-sized coupling hole is formed in the oral cavity in consideration of manufacturing tolerances.

Then, when the joining hole is expanded according to the positional deviation of the cylinder device, and the machining of the coupling hole is completed so that the cylinder device can be completely inserted and penetrated, the prosthesis is fixed to the predetermined installation position, The bonding hole and the cylinder device were combined and the initial installation process of the prosthesis was completed. As a result, there is a problem that the installation process of the prosthesis becomes very complicated, and the subsequent cured resin has a problem that the stability and durability of the prosthesis are lowered because the supporting force of the cured resin is weak.

Korea Patent No. 10-0403834

In order to solve the above problems, the present invention provides a digital prosthesis manufacturing method and a manufacturing system which improve precision and installation convenience.

According to an aspect of the present invention, there is provided a digital prosthesis comprising: a planning unit that performs designing of a digital prosthesis, the orthosis between a target arch of a subject to be prosthesis and a confrontation arch opposite to the target arch, A first step in which a three-dimensional work image is displayed; A second step of setting a virtual fitting hole in the 3D working image so as to correspond to the setting information of the fixture; A third step of matching the virtual engagement hole with the design information of the digital prosthesis preset according to the surface profile of the target arch and the occlusion information in the 3D working image; And a fourth step of fabricating a digital prosthesis in which the final design information of the digital prosthesis obtained by summing the design information of the virtual coupling hole is transmitted to the manufacturing apparatus and the coupling hole corresponding to the virtual coupling hole is penetrated, The virtual cylinder device is extracted from a digital library having a plurality of digital external information having a fitting angle corresponding to one end of the fixture and having a setting angle of the fixture as a selection item, Dimensional work image in accordance with information and arranging the virtual engagement holes so as to match the outer circumferential regions of the virtual cylinder devices arranged in the virtual space, .

The present invention also provides a method of acquiring a bite occlusion image in which occlusion information is displayed according to occlusion between a denture mounted on an object arch of an object to be prosthodontic and a confrontation arch opposed to the object arch, An image pickup device; A virtual cylinder device is virtually arranged in the three-dimensional work image according to the placement information of the fixture placed in the target arch, and the three-dimensional work image is obtained by matching the surface image with the bite occlusion image, A planning unit for designing the digital prosthesis by matching the artificial gum set according to the surface profile and the artificial abdomen set according to the occlusion information to match the virtual engagement holes formed in the virtual cylinder system; And a manufacturing apparatus for manufacturing the designed digital prosthesis.

Through the above solution, the present invention provides the following effects.

First, since the positions of the real fixture and the actual cylinder device installed in the target arch are accurately predicted through the virtual cylinder device arranged in the three-dimensional operation image, the position precision of the coupling hole can be improved because it is reflected in the design of the digital prosthesis.

This makes it possible to install quickly and conveniently without delay due to the additional correction of the expansion hole of the coupling hole / resin, and the installation convenience and durability of the product can be improved since the installation can be made robust without degrading the strength due to the overmolded resin .

Secondly, as the three-dimensional position of the virtual cylinder apparatus is precisely adjusted so that the three-dimensional coordinates of the coupling joint are superposed and aligned on the combined groove image of the fixture displayed in the three-dimensional work image, the position of the cylinder apparatus installed in the actual object arch, The position of the arranged virtual cylinder device can be more accurately matched and the precision of the digital prosthesis can be further improved.

Third, the virtual cylinder device is selected from the digital library on the basis of the fixture information of the fixture, so that the virtual coupling hole can be designed quickly, and the manufacturing of the real cylinder device can be performed through the digital profile information of the extracted virtual cylinder device. Is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart illustrating a method of manufacturing a digital prosthesis according to an embodiment of the present invention; FIG.
2 is a block diagram illustrating a digital prosthesis manufacturing system in accordance with an embodiment of the present invention.
3 is an exemplary view showing a bite occlusion image in a digital prosthesis manufacturing method according to an embodiment of the present invention.
4 is an exemplary view showing a surface image in a digital prosthesis manufacturing method according to an embodiment of the present invention;
5 is an exemplary view showing a CT image in a digital prosthesis manufacturing method according to an embodiment of the present invention;
6 is a view illustrating a design process of a digital prosthesis in a digital prosthesis manufacturing method according to an embodiment of the present invention.
FIG. 7 is a bottom plan view of a temporary digital prosthesis manufactured by the method of manufacturing a digital prosthesis according to an embodiment of the present invention; FIG.
8 is a bottom plan view of a final digital prosthesis manufactured by the method of manufacturing a digital prosthesis according to an embodiment of the present invention.

Hereinafter, a method and a system for manufacturing a digital prosthesis according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a flowchart illustrating a digital prosthesis manufacturing method according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a digital prosthesis manufacturing system according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the digital prosthesis manufacturing method according to the present invention includes acquiring a three-dimensional work image (s10), setting a virtual fitting hole (s20), matching virtual fitting holes and digital prosthetic design information (s30) , And manufacture of a digital prosthesis (s40).

In this embodiment, a manufacturing method of a digital prosthesis is exemplified as an example of a manufacturing process of a complete prosthesis in which either one of the maxillary and mandibular incisors is edentulous or the upper and lower mandibles are both edentulous. However, It is equally applicable to a partial prosthesis manufacturing process in which a partial edentulous defect is placed in a partially edentulous part.

The digital prosthesis manufacturing method of the present invention can be performed by using the digital prosthesis manufacturing system 100 including the imaging apparatus 10, the planning unit 20 and the manufacturing apparatus 30, and the imaging apparatus 10 ) Is preferably understood as a concept including an oral scanner and a CT imaging device.

FIG. 3 is an exemplary view showing a bite occlusion image in a digital prosthesis manufacturing method according to an embodiment of the present invention, FIG. 4 is an exemplary view showing a surface image in a digital prosthesis manufacturing method according to an embodiment of the present invention FIG. 5 is an exemplary view showing a CT image in a digital prosthesis manufacturing method according to an embodiment of the present invention, FIG. 6 is an exemplary view illustrating a design process of a digital prosthesis in the digital prosthesis manufacturing method according to an embodiment of the present invention FIG. 7 is a bottom view of a temporary digital prosthesis manufactured by the method of manufacturing a digital prosthesis according to an embodiment of the present invention. FIG. 8 is a cross-sectional view of a digital prosthesis manufactured by the method of manufacturing a digital prosthesis according to an embodiment of the present invention. FIG. 2 is a bottom view showing a digital prosthesis.

3 to 8, a three-dimensional operation image (1d) is displayed in which the information on the occlusion between the opposing arches facing the target arch is detected from the target arch of the subject to be prosthesis, and the fixture information of the fixture placed on the target arch, Is obtained (s10).

Herein, the occlusion information refers to a vertical height between the target arch and the opposed arch that provides a desired sensitivity to the person to be prosthodontic. The fixture information of the fixture may include a fixture to be placed on the target arch, And the angle of the mounting position of the base plate.

In addition, the target arch is the mandibular dental prosthesis requiring the maxillary and mandibular prosthesis treatment of the subject to be prosthodontic. Hereinafter, the case where the target arch is mandibular is described and shown as an example.

The three-dimensional work image 1d is image data representing periodontal tissue information of the subject's dental arches and gingiva / teeth / alveolar bone of the subject to be prosthodontic, and is acquired through an oral scanner or a CT imaging device And it is also possible that two or more image data are obtained by matching or matching.

Here, the setting information of the fixture may be acquired on the basis of the fixture image displayed in the three-dimensional work image 1d when the fixture is embedded in the target arch, and the fixture is not placed in the target arch , It can be obtained based on the virtual fixture virtually arranged through the periodontal tissue information displayed in the three-dimensional working image 1d.

On the other hand, the three-dimensional working image 1d can be obtained by matching the base occlusion image 1c and the surface image 1d. Here, the bite occlusion image 1c refers to an image obtained through the oral scanner in the occlusion state between the denture and the opposed arch during which the denture is attached to the target arch of the subject.

At this time, the denture refers to an artificial periodontal tissue which is being used by a person to be prosthesis and which is conventionally used, and which is adhesively fixed with a dental adhesive or the like without using a fixture, a cylinder device, a coupling hole, or the like. The digital prosthesis refers to an artificial periodontal tissue that is installed in a target arch through a fixture and a cylinder device.

In detail, the base occlusion image 1c includes a denture image 5c representing the surface shape information of the denture, an object arch image 2c representing the partial surface shape of the dental arch to which the denture is attached, And an image 3c of the confrontation arch representing the surface shape information of the tooth backing arch may be displayed.

At this time, the bite occlusion image 1c is obtained in a state in which the denture attached to the target arch is in a mutually interlocked state, and the occlusal arch having the implant / residual tooth is present, so that the occlusal vertical dimension suitable for the subject to be prosthodontic can be displayed have.

When the denture in use is not present, the occlusal alignment base to which the impression material is applied is disposed between the object arch and the archery arch, and the thickness of the occlusal alignment base is adjusted according to the sensitivity of the dental prosthesis. The process of manufacturing the denture according to the pulling profile of the impression material and the calculated vertical height can be performed. That is, the denture may include an artificial gingival portion formed with a mold groove to be fitted to the surface of the object arch through the impression material, and an artificial gingival portion formed on the surface of the artificial gingival portion, It can be manufactured to have an artificial tooth part.

Referring to FIG. 4, the surface image 1b of the subject arch can be obtained by capturing an image of the subject arch through which the denture is removed through an oral scanner. Herein, the surface image 1b may be displayed with an image 2b of the target arch image showing the surface shape information of the mandibular gum obscured by the dentures.

Of course, it is also possible that the surface image 1b of the object arch may be replaced on the basis of the inverted image of the inner-side joint groove profile of the denture.

At this time, when the fixture is erected in the target arch, a fixture image 7b indicating the shape information at the one end side of the fixture may be displayed. Here, a polygonal coupling groove for coupling with the cylinder device is formed at one end of the fixture, and a coupling groove image 71b corresponding to the surface shape of the coupling groove is displayed in the fixture image 7b.

The surface image 1b and the bite occlusion image 1c of the target arch may be obtained through the imaging device 10 provided on the operator's side such as a dentist and may be transmitted to a manufacturer's server such as a procedure support center . At this time, the surface image 1b and the bite occlusion image 1c transmitted to the manufacturer-side server can be obtained through the planning unit 20 and obtained as the three-dimensional work image 1d.

Here, the surface image 1b and the bite occlusion image 1c may be matched through a common part such as a gingival surface exposed outside the denture, and may be matched using a marker or the like installed on the surface of the gum of the target arch, .

In addition, the planning unit 20 may perform a series of digital prosthetic design processes, which will be described later, based on the 3D working image 1d. At this time, the planning unit 20 may be connected to the server of the manufacturer, and may be a personal computer (PC) or the like which can perform an operation process for each image. Each processing step such as the acquisition of the three-dimensional working image 1d through the planning unit 20 and the design of the digital prosthesis based on the three-dimensional working image 1d can be performed or supported.

At this time, on the basis of the vertical height between the target arch and the antagonism arch displayed on the base occlusion image 1c, the actual gingival portion of the target arch is masked by the surface image 1b Replaced.

That is, the three-dimensional working image 1d includes an object arch image 2d representing the surface shape information of a substantial object arch such as a mandibular gum obscured by a denture, and a surface arch of the arch arch such as the maxillary gum and the maxillary teeth The image of the antagonism arch (3d) is arranged at a vertical diameter suitable for the subject to be prosthodontic, and the occlusion information can be displayed.

At the same time, the object archiving image 2d may display the placement information of the actual fixture embodied in the object arch. In this case, the fixture information of the fixture is preferably understood to mean surface shape information of the coupling groove displayed through the coupling groove image 71b of the surface image 1b.

It is also possible that the virtual fixture 7d is virtually disposed in the three-dimensional work image 1d in a state where the fixture is not placed on the target arch.

Here, the virtual fixture 7d refers to three-dimensional outer shape information of a real fixture placed in an actual object arch, and includes vector data representing three-dimensional outer shape information of the real fixture, It is desirable to understand it as meaning. The three-dimensional outer shape information of the real fixture may be acquired by directly capturing a real fixture through an ORAL scanner or a CT imaging device, or may be stored in a storage in the planning unit 20 so as to be a mechanism .

In this case, the virtual fixture 7d is disposed in a virtual arrangement. That is, the virtual fixture 7d is arranged so that the three-dimensional contour information of the real fixture is displayed as an image in the three-dimensional work image 1d, It is desirable to understand that the three-dimensional coordinates of the tooth are calculated.

The placement angle of the physical fixture can be calculated through a virtual arrangement of the virtual fixture 7d. In a state where the virtual fixture 7d is virtually arranged, It is preferable to understand the shape information and the calculated placement angle.

Of course, as shown in FIG. 5, it is also possible to obtain a CT image 1a for the object arch and the confrontation arch.

In detail, the CT image 1a can be acquired through a CT imaging device and can include information on the internal structure such as the shape, density, and nerve tissue of the alveolar bone.

That is, when the object arch is the edentulous mandible and the confrontation arch is the invasive or prosthetic maxilla, the CT image 1a includes the target arch image 2a representing the tissue information of the target arch such as the mandibular alveolar bone, An image of an opposed arch arch (3a) representing the tissue information of the opposed arch such as the alveolar bone and the maxillary opposed tooth can be displayed and the image (4a) of the nerve tissue based on the nerve ball of the mandibular alveolar bone Can be input or set. At this time, the 3D working image 1d may be obtained by matching and matching the bite occlusion image 1c, the surface image 1b, and the CT image 1a through the planning unit 20.

Here, the three-dimensional working image 1d includes tissue information of the target arch such as the mandibular alveolar bone, image of the target arch showing the shape information of the mandibular gum, tissue information of the arch arch such as the maxillary alveolar bone and the maxillary opposite tooth, An image of a confrontation arch representing information, an image of a nervous tissue, and the like.

At this time, when the fixture is placed on the target arch, the fixture image 7a on the CT image 1a may be displayed on the 3D work image 1d by matching or matching with the target arch image.

When the fixture is not placed on the target arch, the virtual fixture can be virtually arranged. The virtual fixture can be placed on the periodontal tissue of the subject through the tissue information and neural information of the target arch based on the CT image 1a. Appropriate virtual placement is possible.

Of course, it is also possible that the 3D working image 1d is acquired by mutually matching the CT image 1a and the surface image 1b.

Hereinafter, the virtual fixture 7d displayed on the three-dimensional work image 1d is a virtual fixture 7d in which three-dimensional vector data is imaged and virtually disposed, and a fixture image picked up through a CT image 1a, a surface image 1b, It is desirable to understand it as a concept covering images.

At this time, the design information of the digital prosthesis can be obtained on the basis of the surface profile of the object arch, the object arch and the confrontation arch of the object displayed on the obtained 3D work image 1d.

That is, an artificial gingival section having a mold groove corresponding to the surface profile of the object arch is set, and in a state where the artificial gum section is mounted on the object arch, The primary design information of the digital prosthesis can be obtained.

Referring to FIG. 6, when the 3D working image 1d is obtained (s10), a virtual fitting hole 301d is set to correspond to the setting information of the fixture (s20). At this time, the virtual engagement hole 301d may be set as cylindrical region information corresponding to the outer diameter of the cylinder apparatus. The three-dimensional coordinate image may be set in the three-dimensional work image 1d based on the shape information of the one-end side engaging groove of the fixture and the angle of the fixture. That is, the virtual matching hole 301d is arranged in the three-dimensional working image 1d so as to correspond to the setting information of the fixture.

To this end, it is preferable that the virtual cylinder device 200d set to correspond to the cylinder device is arranged in the three-dimensional working image 1d so as to correspond to the setting information of the fixture. That is, the virtual cylinder device 200d may be arranged based on the shape information of the one end side engaging groove of the fixture and the angle of the fixture.

Here, the virtual cylinder device 200d refers to three-dimensional outer shape information of a real cylinder device coupled to a real fixture, and includes vector data representing three-dimensional outer shape information of the real cylinder device, It is desirable to understand the meaning of the image.

In more detail, the physical cylinder device is connected to a physical fixture built in the subject arch to be protruded from the alveolar bone and the gingival surface of the subject arch, and is embedded in the coupling hole of the digital prosthesis to support the digital prosthesis.

Hereinafter, in this embodiment, a case where the actual cylinder device is divided into a real abutment fastened to the real fixture and a real supporting cylinder fastened to the actual abutment is shown and described as an example, It is also possible that the cylinder apparatus is provided so that the actual abutment and the actual supporting cylinder are integrally connected.

That is, the virtual cylinder device 200d is virtually disposed means that the virtual abutment 8d corresponding to the actual abutment and the virtual supporting cylinder 9d corresponding to the actual supporting cylinder are virtually arranged .

Here, the number and position of the physical fixture can be set so as to support the chewing pressure when the chewing pressure is calculated according to the number of the opposed arch-side opposing teeth contacting the digital prosthesis.

At this time, when the number and positions of the physical fixtures are set, the mounting angles of the physical fixtures at the respective mounting positions can be set in consideration of alveolar bone shape, density, nerve tissue arrangement, and the like corresponding to the respective positions.

For example, when the subject arch is a complete edentulous mandible, the fixture may be set at four positions, such as two for the front side and two for the rear side, and the number may be set. At this time, since the alveolar bone has a large amount of alveolar bone in its periphery and there is no distribution of nerve tissue in the lower part, the angle of fixation in the vertical direction can be set in the frontal fixture.

Here, the actual cylinder device coupled to the vertical fixture installed in the vertical direction may be provided as a straight line, and may be provided with a straight line abutment and a lifting support cylinder fastened to the straight line abutment.

In the posterior alveolar bone, there is no alveolar bone on one side or the other side adjacent to the end of the mandible, and nerve tissue is distributed in the lower part. Therefore, the posterior fixture can be set in an oblique direction so as to avoid the nerve tissue and form a strong supporting force.

Here, the actual cylinder device coupled to the actual fixture installed in the oblique direction may be provided with a bent type, and may be provided with a bent type actual type abutment and an actual supporting cylinder fastened to the bent type actual abutment.

At this time, the real cylinder device can be obtained by directly imaging the real cylinder device through an Oral scanner or a CT imaging device, or it can be database-structured in a repository in the planning part 20.

In detail, the storage of the planning unit 20 may include a digital library including digital contour information corresponding to a plurality of physical cylinder devices. That is, the digital library is preferably understood to be a database in which a plurality of pieces of digital external information corresponding to a bending type real cylinder device bent in a straight line or a plurality of different angles are stored in advance.

In this case, the digital appearance information included in the digital library may include a coupling portion corresponding to one end side coupling groove of the physical fixture, and may include a selection angle of the fixture. In other words, the digital library has a plurality of digital memories, each of which has a coupling portion that is coupled to one end of the fixture and is formed in a coupling groove on the side of the other end of the fixture, Appearance information is included.

At this time, one virtual cylinder device having an angle suitable for the angle of the fixture may be extracted from a plurality of pieces of digital outer shape information, and the extracted virtual cylinder device may be configured such that the other end- Can be placed virtually within the three-dimensional working image 1d.

Accordingly, the virtual cylinder device can be quickly selected and placed virtually in the three-dimensional working image 1d, and the physical cylinder device can be easily manufactured using the digital contour information of the selected virtual cylinder device. It is also possible that a plurality of the actual cylinder devices are manufactured in accordance with the digital outline information included in the digital library and one of the actual cylinder devices corresponding to the selected virtual cylinder device is immediately used without any manufacturing process.

In this case, the virtual cylinder device 200d is arranged in a virtual arrangement so that the three-dimensional appearance information of the cylinder device is displayed as an image in the three-dimensional operation image 1d, Dimensional coordinate of the three-dimensional coordinate system is calculated.

On the other hand, when the virtual cylinder device 200d is virtually disposed, the virtual coupling hole 301d is aligned so as to match the outer area of the virtual cylinder device 200d.

At this time, when the virtual cylinder device 200d is virtually arranged as the cylindrical region information corresponding to the cylinder device, the virtual fitting hole 301d is arranged and arranged in accordance with the three-dimensional coordinates of the virtual cylinder device 200d . Thus, the virtual engagement hole 301d can be set more precisely.

The virtual fitting hole 301d virtually arranged to correspond to the virtually arranged virtual cylinder device 200d is matched with the primary design information of the digital prosthesis preset according to the surface profile of the subject arch and the occlusion information s30).

That is, the virtual designation information of the preset digital prosthesis is matched with the virtual fitting hole 301d, and the final design information of the digital prosthesis can be obtained. Here, the virtual coupling hole 301d is design information for forming a physical coupling hole in a digital prosthesis that is actually manufactured, and is understood to mean a three-dimensional image or three-dimensional vector data in the three-dimensional working image 1d Hereinafter, the bonding hole refers to an actual tongue formed on the digital vertebral body so that the physical cylinder device is embedded.

Specifically, when perforation is formed in the target arch of the subject to be prosthodontic, the real fixture is placed on the perforation, and the real cylinder device is fastened to the placed real fixture. Then, the digital prosthesis can be installed through the coupled real cylinder device.

Here, the coupling hole means a portion in which the solid cylinder device is embedded. Of course, a digital prosthesis may be provided by coupling the physical cylinder device and the real fixture in a state where the physical cylinder device is integrally fixed to the coupling hole. In the state where the physical cylinder device is fixed to the physical fixture, It is also possible that the cylinder device is engaged in the coupling hole to provide the digital prosthesis.

At this time, when the virtual cylinder device 200d is virtually disposed on the basis of the placement information of the fixture displayed in the three-dimensional work image 1d and the placement information, The positional relationship between the actual fixture installed in the arch and the actual cylinder device fastened to the actual fixture can be accurately predicted.

The virtual coupling hole can be precisely designed so that the position of the real cylinder device is accurately reflected. Accordingly, the mounting position / angle of the cylinder device and the position / angle of the coupling hole of the digital prosthesis can be accurately matched according to the placement position / angle of the actual fixture installed in the target arch.

That is, unlike the conventional case where the position of the coupling hole is determined through the experience of the practitioner or the eyes, etc., it is possible to install quickly and conveniently without delays due to the extended cutting of the coupling hole or the additional correction of the resin dam. In addition, since the damage of the coupling hole due to the separation or breakage of the overlapped resin or the detachment of the cylinder device is prevented, the installation can be made robust and the installation convenience and durability of the product can be improved.

Meanwhile, the virtual cylinder device 200d may be arranged in the virtual cylinder device 200d such that the three-dimensional coordinates of one end of the fixture and the other end of the virtual cylinder device 200d are overlapped with each other, And a third step of moving the second substrate. In detail, a polygonal coupling groove is formed at one end of the lifting fixture, and a projection-like coupling and coupling portion is formed at the other end of the lifting cylinder device or the actual abutment to be engaged with the coupling groove.

In other words, the one end side mating surface of the fixture means a depression corresponding to the engagement groove, and the other end side mating surface of the virtual cylinder device 200d means a protruding surface corresponding to the mating engagement portion Understanding is desirable.

At this time, as the three-dimensional position of the virtual cylinder device 200d is adjusted so that the three-dimensional coordinates of the depressed surface and the three-dimensional coordinates of the protruding surface are mutually overlaid, the virtual placement position of the virtual cylinder device 200d Can be exactly matched with the position of the real cylinder device installed in the target arch.

As the three-dimensional position of the virtual cylinder device 200d is precisely adjusted so that the three-dimensional coordinates of the mold surface between the virtual fixture 7d and the virtual cylinder device 200d are superposed and matched, the actual cylinder The position of the device and the position of the virtual cylinder device placed virtually in the three-dimensional working image 1d can be more precisely matched and the precision of the digital prosthesis can be remarkably improved through the accurate design of the virtual fitting hole.

Of course, the three-dimensional movement of each of the virtual objects 200d, 8d, and 9d may be performed such that the virtual objects 200d, 8d, and 9d are substantially moved within the three-dimensional working image 1d, Dimensional coordinates of the virtual objects (200d, 8d, 9d) in the working image (1d) are recomputed.

Meanwhile, in step s30, the artificial gingiva is set along the surface profile of the subject arch, and the virtual digital prosthesis 300d having the artificial tooth part according to the occlusion information sets the three-dimensional operation image 1d And the virtual coupling hole 301d is matched with the design information of the digital prosthesis according to the overlapping area between the virtual cylinder device 200d and the virtual digital prosthesis 300d Step.

In detail, the inner surface profile of the artificial gingival section is set along the gingival surface profile of the object arch image 2d displayed in the three-dimensional operation image 1d. At this time, a mold groove is formed on the inner surface side of the artificial gum section so that the object arch is closely inserted into the artificial gum section, and the digital prosthesis can be stably installed in the object arch as the mold groove and the surface of the object arch come in close contact with each other.

When the outer surface profile is set in consideration of the predetermined support thickness from the set inner surface profile, the solid three-dimensional region information between the outer surface profile and the inner surface profile may be set as the design information corresponding to the artificial gum portion.

Also, the height of the artificial abdomen is set according to the height of the artificial gingival suture of the artificial gingiva from the surface of the artificial gum, so that design information corresponding to the artificial abdomen can be obtained. That is, since the image of the confrontation arch (3d) displayed on the three-dimensional work image (1d) is in a state of being arranged at a vertical height suitable for the person to be prosthodontic in a state in which the denture is mounted, the height of the artificial abdomen .

At this time, the virtual digital prosthesis 300d may be set according to the primary design information of the digital prosthesis including the artificial gingival portion and the artificial tooth portion, and the virtual prosthesis 300d may be set in the three-dimensional operation image 1d. Of course, it is preferable that the virtual digital prosthesis 300d is understood to mean three-dimensional vector data representing the design information or a three-dimensional image corresponding to the vector data.

The virtual digital prosthesis 300d is virtually arranged so that the design information of the digital prosthesis is imaged and displayed in the 3D working image 1d or the design of the digital prosthesis 1d within the 3D working image 1d Dimensional coordinate corresponding to the information is calculated.

At this time, the virtual digital prosthesis 300d is arranged so that the inner side joint groove is coincident with the surface profile of the target arch image 2d.

The virtual coupling hole 301d may be matched with the design information of the digital prosthesis according to the overlapping area between the virtual digital prosthesis 300d and the virtual supporting cylinder 9d. That is, the design information corresponding to the set artificial gum, the artificial abdomen, and the virtual coupling hole may be summed up to obtain the final design information of the digital prosthesis.

Accordingly, the virtual coupling hole 301d can be precisely designed accurately reflecting the actual placement / installation positions of the fixture and the cylinder device installed in the target arch, and the coupling hole of the digital prosthesis can be accurately formed.

Then, the obtained final design information of the digital prosthesis is transferred to the manufacturing apparatus 30 to manufacture a digital prosthesis (s40). At this time, a coupling hole corresponding to the virtual coupling hole is formed in the digital prosthesis so that a cylinder device corresponding to the virtual cylinder device is embedded and aligned with the fixture that has been formed.

Here, the digital prosthesis is preferably understood as a concept including the temporary digital prosthesis 310 and the final digital prosthesis 320.

Meanwhile, in the step (s40) of manufacturing the digital prosthesis, a provisional digital prosthesis 310 which is three-dimensionally printed according to the design information of the digital prosthesis is manufactured and installed in the found fixture, The final digital prosthesis 320 may be manufactured and installed to replace the temporary digital prosthesis 310 according to design information.

7, the temporary digital prosthesis 310 is a simple type three-dimensionally printed with thermoplastic plastic or the like, and a mold groove 311a is formed on the lower surface of the artificial gum 311, and the artificial gum 311) and an engaging hole (311b) to penetrate the artificial tooth portion.

At this time, the temporary digital prosthesis 310 can be rapidly manufactured through three-dimensional printing, and can be manufactured at the same time as the acquisition of the design information of the digital prosthesis, and can be immediately used in a fixture placed in the target arch.

8, the final digital prosthesis 320 may be made of a ceramic material having high strength and biocompatibility, such as zirconia, and the artificial gingiva 321 and the artificial tooth may be manufactured. The lower surface may further include a reinforcing portion 322 for improving the supporting force with respect to the fixture.

At this time, the reinforcing portion 322 may be made of a metal material having high strength and biocompatibility, and may include a metal frame forming a skeleton of the artificial abdomen and the artificial gingiva, or a bar bridge And the like.

The artificial gingiva 321 and the artificial tooth portion are formed to cover the upper portion of the reinforcing portion 322 and are disposed along the lower portion of the artificial gingival portion 321 and the reinforcing portion 322, A mold recess 321a corresponding to the surface can be formed. In addition, the coupling hole 322b is formed to penetrate the reinforcing portion 322, the artificial gum 321, and the artificial tooth, and a cylinder device may be integrally formed therein.

At this time, although the final digital prosthesis 320 can be manufactured by a three-dimensional printer, it is more preferable that the final digital prosthesis 320 is manufactured by a cutting machine or the like for high precision machining without limitation of a workpiece. Thus, an artificial periodontal tissue having high processing accuracy and durability can be provided.

As described above, since the temporary digital prosthesis 310 can be used during the manufacturing period of the final digital prosthesis 320, the continuous chewing ability can be secured without deteriorating the appearance, and the inconvenience of daily life can be eliminated.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

100: Digital prosthesis manufacturing system 10: Imaging device
20: Planning part 30: Manufacturing device
310: temporary digital prosthesis 320: final digital prosthesis

Claims (5)

A three-dimensional work image in which occlusion information between an object arch of an object to be prosthodontic and opposed arch opposed to the object arthropod and placement information of a fixture to be placed on the object arch is displayed through a planning section for designing a digital prosthesis, Stage 1;
A second step of setting a virtual fitting hole in the 3D working image so as to correspond to the setting information of the fixture;
A third step of matching the virtual engagement hole with the design information of the digital prosthesis preset according to the surface profile of the target arch and the occlusion information in the 3D working image; And
And a fourth step of fabricating a digital prosthesis in which the final design information of the digital prosthesis obtained by summing up the design information of the virtual coupling hole is transmitted to the manufacturing apparatus and the coupling hole corresponding to the virtual coupling hole is penetrated,
The second step
Wherein the virtual cylinder device is extracted from a digital library including a plurality of pieces of digital outer shape information having a fitting angle corresponding to one end of the fixture and having a setting angle of the fixture as a selection item, Dimensional work image;
And aligning the virtual engagement holes so as to match the outer regions of the virtual cylinder devices. delete The method according to claim 1,
The second step
Dimensionally moving the virtual cylinder device so that the three-dimensional coordinates of one end of the fixture and the other end-side mating surface of the virtual cylinder device overlap each other in the three-dimensional work image,
In the third step,
A virtual digital prosthesis in which an artificial gingival section is set along a surface profile of the subject arch and an artificial tooth part is set according to the occlusion information,
And matching the virtual coupling holes according to overlapping areas between the virtual cylinder device and the virtual digital prosthesis. The method according to claim 1,
Wherein the first step is to match the surface image of the subject arch with the denture removed in the base occlusion image in which the occlusion information is displayed according to the occlusion between the denture attached to the target arch and the confrontation arch, Wherein the step (a)
Wherein the temporary digital prosthesis is manufactured in accordance with the design information of the digital prosthesis and is installed in the fixture; and a final digital prosthesis is manufactured according to the design information of the digital prosthesis, The method further comprising the step of: A bite occlusion image in which occlusion information is displayed according to occlusion between a denture mounted on an object arch of a subject to be prosthodontic and a confrontation arch opposed to the object arch, and an image pickup device for acquiring a surface image of the object arch on which the denture is released;
A virtual cylinder device is virtually arranged in the three-dimensional work image according to the placement information of the fixture placed in the target arch, and the three-dimensional work image is obtained by matching the surface image with the bite occlusion image, A planning unit for designing the digital prosthesis by matching the artificial gum set according to the surface profile and the artificial abdomen set according to the occlusion information to match the virtual engagement holes formed in the virtual cylinder system; And
And a manufacturing apparatus for manufacturing the designed digital prosthesis.

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