KR102021104B1 - method for manufacturing digital dental prosthesis using metal frame - Google Patents

Abstract

In order to improve manufacturing convenience and accuracy, the present invention provides a digital prosthesis manufacturing method comprising: a first step of obtaining a 3D work image containing 3D surface information of a gingiva target body corresponding to a grand maxillary arch of a person to be supplemented and occlusion information with an antagonistic arch; a second step of, based on the 3D work image, designing and manufacturing a fixing groove unit matched with an outer surface profile of the grand maxillary arch and a surgical guide having a guide hole formed according to implant guiding information containing preset fixture implant information to match and fix to the grand maxillary arch; a third step of designing and manufacturing a metal frame having a plurality of coupling holes corresponding to the implant guiding information and a matching surface corresponding to the outer surface profile of the gingiva target body, and an artificial tooth having the height set based on the occlusion information, respectively; and a fourth step of coating and curing a coating composition matched with a color of the grand maxillary arch in a corresponding area of the gingiva unit of the outer surface of the metal frame, and coupling the artificial tooth to the metal frame to manufacture a final digital prosthesis.

Description

Metal prosthetic frame for digital prosthesis and method for manufacturing digital prosthetic using same

The present invention relates to a digital prosthetic metal frame and a method of manufacturing a digital prosthesis using the same, and more particularly, to a digital prosthetic metal frame and a method of manufacturing a digital prosthesis using the same, which improves manufacturing convenience and precision.

Generally, dental prosthesis is an oral periodontal tissue that artificially restores appearance and function by replacing defective natural teeth.

In detail, when left in a state where natural teeth are lost, distortion of the teeth occurs in the adjacent teeth and the opposing teeth of the missing tooth, resulting in deformation of the facial shape, and deterioration of mastication function, thereby increasing the inconvenience of daily life. In addition, when the state of loss of natural teeth lasts for a long time, the alveolar bone surrounding the missing tooth is absorbed into the body, which makes it difficult to install artificial periodontal tissue.

In this case, the prosthesis may be installed inside the oral cavity to restore the chewing function and to prevent the deformation of the periodontal tissue, and may be classified as a partial prosthesis or a full prosthesis according to the number of missing teeth.

On the other hand, the prosthesis may be installed inside the oral cavity through a fixture placed in the alveolar bone. Such a prosthesis can solve the problem of causing deformation of the gum or a large amount of foreign body due to the support of the denture, which is conventionally fixed with an adhesive and is directly contacted with the gum, and thus the amount of use of the prosthesis is increasing.

In detail, the prosthesis is formed with a coupling hole in which the support cylinder is embedded. That is, when a perforation is formed in the alveolar bone, a fixture is placed in the perforation formed. Subsequently, when the abutment is installed in the implanted fixture, the support cylinder is coupled to the installed abutment so that the prosthesis may be installed in the oral cavity.

In this case, the support cylinder and the abutment / fixture are formed in a plurality of places according to the size of the prosthesis, and the support prosthesis will be stably installed as each support cylinder is matched to each abutment / fixture one to one. Can be.

In addition, in the prosthesis, an assembly tolerance may be formed by predicting an implantation position of a fixture installed in the oral cavity, and a coupling hole having a free area may be formed. Here, a material such as resin may be injected into the free area in which the assembly tolerance is formed and candidates may be determined.

However, conventionally, after manufacturing the prosthesis, the positional deviation of the coupling hole has a big problem due to the method of embedding the supporting cylinder after processing the coupling hole by predicting the installation position of the prosthesis and the placement position of the fixture. .

In order to improve this, after imposing coping with the fixture, the impression of the target archery is obtained, and a model of the target archery is formed by using the inner profile of the acquired impression, and the position of the coupling hole based on the impression coping. And the method of manufacturing the prosthesis by setting the angle has been used.

However, in the case of the impression acquisition method, there was a problem that causes the discomfort of the patient due to a foreign body when the impression acquisition. In addition, the burden of the operator is increased due to the complex and high difficulty of various process steps, and the error of each process step is often overlapped, which causes a problem of deterioration of precision.

In addition, in the case of edentulous patients, the soft tissue in the oral cavity flows, so that the obtained oral shape at the time of impression taking and the actual oral shape at the time of prosthetic manufacturing are deformed differently, so that the final manufactured prosthesis is not substantially conformed to the oral cavity of the patient. There was a problem that occurred.

Korea Patent Registration No. 10-0403834

In order to solve the above problems, the present invention is to provide a digital prosthetic metal frame and a method of manufacturing a digital prosthesis using the same, the manufacturing convenience and precision is improved.

In order to solve the above problems, the present invention is a first step of obtaining a three-dimensional work image including the three-dimensional surface information and the occlusal information of the gum part object corresponding to the target arch of the prosthetic subject; Based on the three-dimensional work image, the surgical guide is formed and designed according to the implantation guide information including the fixed groove portion and the predetermined fixture placement information to be matched to the outer profile of the target archery and to the target archery A second step of fixing and molding; A third step of designing and manufacturing a metal frame having a mating surface corresponding to a plurality of fastening holes and an external profile of the gum part object and an artificial tooth whose height is set based on the occlusal information corresponding to the placement guide information; And a fourth step in which a coating composition matching the color of the target archery is applied and hardened to the gum corresponding area of the outer surface of the metal frame, and the artificial tooth is coupled to the metal frame to manufacture a final digital prosthesis. In a third step, a virtual fastening hole is set to correspond to the virtual abutment is extracted from the digital library corresponding to the fixture placement information of the implantation guide information is virtually arranged, the fastening hole is formed corresponding to the virtual fastening hole The stepped portion is formed along the vertical direction of the metal frame, the inner circumference of the head portion is fastened to the head portion of the fastening screw for fixing the abutment coupled to the fixture is formed, the three-dimensional work image of the gum part object A virtual gum extension is virtually arranged along the arch line and virtually corresponds to the occlusal information. Ball doedoe the virtual tooth placement and provides a digital prosthesis manufacturing method characterized in that the virtual extension portion from the gums corresponding to the individual projected virtual support protrusions is set to the virtual artificial teeth.

On the other hand, the present invention is a digital prosthetic metal frame for coupling to a plurality of fixtures implanted in the target arch of the prosthetic subject, extending along the dental arch line of the target arch, the type corresponding to the contour profile of the gum sub-object A gum extension portion formed with a haptic surface; The height is set based on the three-dimensional surface information of the gum part object and the occlusal information with the clavicle arch A plurality of support protrusions protruding from the gum extension to be individually inserted into the support grooves of the artificial tooth; And a coloring layer on which a coating composition matching the target archery color is applied to the gum corresponding area of the outer surface of the gum extension part, wherein the coloring layer penetrates the gum extension part and the support protrusion in response to the position of the fixture. And a fastening hole in which a stepped portion is formed in which a head portion of the fastening screw fastened to the abutment coupled to the fixture is formed on the inner circumference thereof, and a shape and a volume of the support protrusion are a joint area and a support cross-sectional area of the support groove. It provides a digital prosthetic metal frame, characterized in that provided in the shape and volume corresponding to the shape and volume of the artificial tooth in proportion to the chewing load for each position of the arch line.

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

First, the abutment coupling part is supported on the inner circumference of the fastening hole formed along the up and down direction of the metal frame, thereby minimizing the flow due to the tolerance space or the chewing pressure between the fastening hole and the abutment, so that the metal frame is fixed inside the oral cavity. The precision and fit of the product can be improved.

Second, the plurality of support protrusions may be provided to correspond to the shape and volume of each artificial tooth to provide a joint area proportional to the chewing load of the artificial tooth, and to each part of the gum extension according to the deviation of the support cross section of each support protrusion. Since the chewing load is loaded with a distribution similar to the actual tooth, the sense of unity is maximized and the durability and satisfaction of the product can be improved.

Third, the head of the fastening screw which is fastened to the inner circumferential fastening groove of the abutment upper part is caught in the stepped portion formed in the fastening hole, the metal frame is fixed to the oral cavity, and then the artificial tooth is fixed to the metal frame to be installed in the oral cavity. Since the flow due to the chewing pressure is minimized, the durability of the product can be improved.

Fourth, the artificial tooth corresponding to the position of the fastening hole to form a communication hole for resin injection damages the entire artificial tooth by removing the resin injected and cured in the communication hole through the treatment device when the digital prosthesis needs to be re-treated. Since the reoperation is possible without the need, the convenience of the procedure may be significantly increased.

1 is a flow chart showing a digital prosthesis manufacturing method according to an embodiment of the present invention.
Figure 2 is a block diagram showing a digital prosthetic manufacturing system according to an embodiment of the present invention.
Figure 3 is an exemplary view showing the intraoral scanning process in the digital prosthetic manufacturing method according to an embodiment of the present invention.
Figure 4 is an exemplary view showing a denture correction process in the digital prosthetic manufacturing method according to an embodiment of the present invention.
5 is an exemplary view showing a design process of the surgical guide in the digital prosthetic manufacturing method according to an embodiment of the present invention.
6 is a cross-sectional view showing a surgical guide in the digital prosthetic manufacturing method according to an embodiment of the present invention.
7 is an exemplary view showing a design process of a temporary digital prosthesis in the method of manufacturing a digital prosthesis according to an embodiment of the present invention.
8 is an exemplary view showing a process of correcting a temporary digital prosthesis in the method of manufacturing a digital prosthesis according to an embodiment of the present invention.
9 and 10 are exemplary views showing a process of setting the support protrusions in the method of manufacturing a digital prosthesis according to an embodiment of the present invention.
11 is a perspective view of a metal frame in the method of manufacturing a digital prosthesis according to an embodiment of the present invention.
12 is a bottom view of the metal frame in the method of manufacturing a digital prosthesis according to an embodiment of the present invention.
Figure 13 is an exploded perspective view partially projecting the interior of the final digital prosthesis produced in accordance with one embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the digital prosthetic metal frame and digital prosthetic manufacturing method using the same according to an embodiment of the present invention.

1 is a flowchart illustrating a method for manufacturing a digital prosthesis according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a system for manufacturing a digital prosthesis according to an embodiment of the present invention. As shown in Figure 1 to 2, the digital prosthetic metal frame and the digital prosthetic manufacturing method using the same according to the invention three-dimensional image acquisition (s10), surgical guide design and manufacturing (s20), fixture placement ( s30), metal frames and artificial teeth include steps such as design and manufacture (s40) and final digital prosthetic manufacture (s50).

The digital prosthetic manufacturing method of the present invention may be performed using the digital prosthetic manufacturing system 100 including the imaging device 10, the planning unit 20, and the manufacturing device 30. At this time, the imaging device 10 is preferably understood as a concept encompassing the oral cavity scanner and CT imager. The planning unit 20 may further include the final digital prosthesis including the surgical guide, the temporary digital prosthesis, and the metal frame based on the image data and the pre-stored design information acquired using the imaging device 10. It is desirable to understand as a design device to design. In addition, the planner 20 may establish an implantation plan for fixing the final digital prosthesis in the oral cavity. In addition, the manufacturing apparatus 30 is a three-dimensional printer or a mill such that the surgical guide, the temporary digital prosthesis and the final digital prosthesis, which are designed through the planning unit 20, are manufactured in real life by three-dimensional printing or milling. It is preferable to understand. Of course, the manufacturing apparatus 30 may further include a mold apparatus prepared corresponding to the designed information.

On the other hand, in the present embodiment described and illustrated as an example of the manufacturing process of the complete prosthetic metal frame for digital prosthesis and the digital prosthetic manufacturing method using the same, which is installed inside the oral cavity in which one side of the upper jaw or the lower jaw is both edentulous or upper and lower jaw. do. Of course, the metal frame according to the present invention and a method for manufacturing a digital prosthesis using the same may be equally applied to the manufacturing process of the partial prosthesis installed in the partial teeth of the upper or lower jaw. These digital prostheses can solve the problem of causing deformation of the gums or a large amount of foreign body due to the support of the dentures, which are conventionally fixed with adhesive and directly contacting the gums, and thus the usage of dentures is increasing. .

3 is an exemplary view showing an intraoral scanning process in a digital prosthetic manufacturing method according to an embodiment of the present invention, Figure 4 is an exemplary view showing a denture correction process in a digital prosthetic manufacturing method according to an embodiment of the present invention. to be. And, Figure 5 is an illustration showing the design process of the surgical guide in the digital prosthetic manufacturing method according to an embodiment of the present invention, Figure 6 is a surgical guide in the digital prosthetic manufacturing method according to an embodiment of the present invention It is sectional drawing shown.

As shown in FIGS. 3 to 6, first, the three-dimensional working image including the three-dimensional surface information of the gum part object corresponding to the target arch of the prosthetic subject and the occlusal information with the clam arch (1d) (1d ) (S10 in FIG. 1). At this time, the placement guide information (g1, g2) is calculated from the three-dimensional work image (1d).

And a fixing groove 51 formed as a profile to be joined to the target archery according to the placement guide information g1 and g2, which are set based on the three-dimensional work image 1d and include preset fixture placement information. A surgical guide 50 having a guide hole 52 for guiding placement of the fixture is designed and manufactured (s20 in FIG. 1). Subsequently, the surgical guide 50 is fixed to the target archery, guided to the guide hole 52 to form a perforation in the target archery 2, and the fixture is placed (s30 in FIG. 1). .

Here, the target archery (2) is preferably understood as a concept encompassing the alveolar bone of the arch and the soft tissue surrounding the alveolar bone is installed prosthesis. In addition, the three-dimensional surface information of the gum part object is preferably understood as a concept encompassing three-dimensional image data obtained by scanning the denture groove of the denture that the target archery (2) or the prosthetic object is conventionally used. Do. In addition, the fixing, installation, placement or corresponding to the target archery is preferably understood to have the same meaning as the fixing, installation, placement or corresponding to the target arch axis of the gums. In addition, it is preferable to understand that the perforation is formed in the target archery 2 as the perforation is formed in the alveolar bone where the gum is cut and exposed. In addition, the implantation of the fixture is preferably understood that the fixture is implanted in the perforations formed in the alveolar bone.

The surface information described above and later will be understood as digital data such as three-dimensional image data and three-dimensional vector data on the surface of each tissue or metal frame of the oral cavity and components used in the method of manufacturing a digital prosthesis using the same. desirable. For example, the three-dimensional surface information refers to three-dimensional digital data obtained from denture fitting grooves of dentures in which the gum surface or the prosthetic object of the target arch is conventionally used. In addition, the target archery means a jaw where the prosthetic is substantially installed in the upper jaw and the lower jaw of the prosthetic subject. Hereinafter, the target arch will be described and illustrated by way of example. In addition, the 3D work image 1d may be understood as digital data in which surface information such as gum / resistance tooth and internal tissue information of the target arch and the clavicle arch 3 associated with the arch are combined.

In detail, the target archery 2 is scanned through the oral scanner s to obtain the target arch-side scanning image 2d including the 3D surface information. Then, the clavicle arch 3 is scanned to obtain the clavicle-side scanning image 3d including the clavicle-side surface information. In this case, when there is a residual tooth in the clavicle arch 3, the scan image of the clavicle side 3d includes surface information of the gum and remaining teeth, and if only the clam arch is also edentulous, only surface information of the gum is included. Can be.

In addition, a CT image 4d including internal tissue information such as alveolar bone shape and density of the target archery 2 and neural tissue may be further obtained through the CT imager. Furthermore, the CT image 4d is obtained in a state where the target archery 2 and the clavicle arch 3 are occluded in response to an occlusal vertical dimension (VD) that provides an optimized chewing sensitivity to the prosthetic subject. May be For example, the CT image 4d may be obtained in a state where the radiographic occlusal guide means is disposed between the target arch 2 and the arch arch 3.

Each of the scanning images 2d and 3d and the CT image 4d are matched or matched by the planning unit 20 of FIG. 2 to integrate the three-dimensional surface information, the clavicle side surface information, and the internal tissue information. The 3D work image 1d may be generated.

The three-dimensional working image 1d may be obtained by arranging the target arch-side scanning image 2d and the opposing arch-side scanning image 3d based on the occlusal information. When the scanning images 2d and 3d and the CT images 4d aligned based on the occlusal information are matched with each other, the surface information of the gums, which are soft tissues that are hard to be displayed on the CT images 4d, is scanned. It may be displayed through surface information of the gums included in the images 2d and 3d. Then, when matching to the position corresponding to each other on the basis of the common overlapping reference point of each of the scanning image (2d, 3d) and the CT image (4d), that is, overlapping the outer surface image, such as the end of each pair of claus arch Thus, the first difference map with less error can be obtained. In addition, the 3D work image 1d, which is highly precise and matched, may be obtained by performing an image correction operation in the image registration process using the first difference map.

Furthermore, the target archery 2 whose overall outer surface is exposed by the traction device 60 that presses the soft tissue in response to the arched profile of the target archery 2 in the oral cavity when the 3D work image 1d is acquired. It is preferable that the surface information of) and the occlusion information with the clam arch 3 be displayed. That is, it is preferable that the traction device 60 is used to pressurize and pull the soft tissue adjacent to the target archery 2 when the target archery side scanning image 2d is obtained. Here, the traction apparatus 60 is inserted between at least one side of the inner and outer sides of the target archery 2 and the soft tissue adjacent thereto, and disposed in the oral cavity so that the soft tissue is spaced apart from the target archery 2. Here, it is preferable that the outer portion of each gum portion corresponds to the labial and buccal portions of the oral cavity and the inner portion of the gum portion corresponds to the lingual portion.

In addition, the traction device 60 has an inner surface portion corresponding to the gum portion adjacent to the soft tissue, and the traction base portion 61 and the traction base portion 61 are elastically deformed to correspond to the dental arch profile of the target archery 2. It includes a grip portion 62 provided on one side of the. At this time, the traction device 60 applied to the mandible side is tongue (a), lips different in the traction direction to the outer surface portion of the traction base portion 61 is provided so that the inner surface portion of the mandible gum portion inner and outer parts as a whole (b) and the buccal mucosa are simultaneously pulled under pressure. Or, the traction device applied to the maxillary side is provided so that the traction base portion surrounds the outer portion of the maxillary gum portion, and the lips and cheek mucous membranes can be clearly exposed and scanned without covering the outer surface of the palate while being pressurized.

At this time, when the traction base portion 61 is pressed toward the lower end side of the target archery 2 while the grip portion 62 is gripped, the soft tissue is spaced apart from the gum portion to restrict the flow. Subsequently, the oral cavity scanner s moves along the entire exposed outer surface of the target archery 2, that is, the surface of the gum, so that the target arch side scanning image 2d including the 3D surface information may be obtained. have. Of course, the clavicle-sided scanning image 3d may also be obtained by the above-described method using the traction device 60.

On the other hand, the three-dimensional surface information of the gum portion object corresponding to the target archery (2) is installed in the target archery (2) denture groove (7) and denture occlusal surface (8) corrected denture (4) It is preferred to include denture correction images obtained from. Here, the denture (4) means that the prosthetic subject is conventionally used, artificial periodontal tissue that is adhesively fixed with a dental adhesive or the like without using a fixture, a cylinder device, a coupling hole. Of course, in some cases, the present invention may further include the step of manufacturing the denture 4 on the basis of the three-dimensional working image (1d) when there is no denture of the prosthetic subject.

Here, the denture 4 including the denture teeth portion 5 and the denture teeth portion 6 is preferably installed in the oral cavity. Here, the denture correction image of the dentures (4) is corrected to the denture occlusal surface portion (8) to be engaged with the denture fitting groove (7) and the opposing teeth (3) side clam teeth to be matched to the target arch (2) Can be obtained.

In detail, when the denture 4 is installed in the oral cavity and occludes the clavicle arch 3, the surface profiles of the denture fitting groove 7 and the denture occlusal surface part 8 are respectively determined by the occlusal pressure. And the surface profile of the clavicle 3. At this time, the denture groove (7) is applied to the curable resin can be installed in the target archery (2). When the curable resin is pressurized by the occlusal pressure, the gap between the denture fitting groove 7 and the target arch 2 may be corrected by the curable resin. As the curable resin is cured and fixed, the inner surface profile of the denture fitting groove 7 may be corrected to a profile including a matching compensation surface portion r1 formed by the curable resin.

In addition, the denture occlusal surface portion 8 may be adjusted to be optimized based on the chewing sensitivity of the denture subject by cutting on the basis of the mastication of the clam teeth of the clavicle arch formed by the occlusal pressure. Through this, the surface profile of the denture occlusal surface portion 8 may be corrected to a profile including the occlusal correction surface portion r2 matching the opposing tooth.

Then, by scanning the entire outer surface of the denture 4, the denture fitting groove 7 and the denture occlusal surface portion 8 is corrected by using the oral scanner (s) of the fitting denture correction surface portion (r1) A profile image and a profile image of the occlusal correction surface portion r2 may be obtained to generate the denture correction image. Here, the denture correction image is preferably included in the three-dimensional surface information of the gum portion object corresponding to the target archery (2). Accordingly, the surgical guide 50 may be designed and manufactured based on the denture corrected image obtained from the corrected denture 4. Through this, since the occlusion reliability of the fixture implanted in the oral cavity using the surgical guide 50 is improved, the satisfaction of use of the prosthetic subject can be significantly improved.

Of course, in some cases, the impression of the periodontal tissue of the subject is obtained by using the impression material from the target archery, and the impression body corresponding to the target archery may be further obtained by pouring plaster on the sound. Here, the 3D surface information of the impression corresponding to the target archery may be obtained by scanning the impression through the oral scanner (s). That is, the three-dimensional surface information may be obtained by directly scanning the target archery, by scanning by correcting the denture that the prosthetic subject is conventionally used, or by scanning a separately produced impression body.

Meanwhile, the target arch-side scanning image 2d and the clavicle-side scanning image 3d are arranged to be spaced apart from each other in correspondence to the vertical height VD. Here, the vertical height VD may be calculated from a profile image of the occlusal correction surface portion r2 of the denture correction image. In addition, the vertical height (VD) is to be calculated by adjusting the thickness of the occlusal alignment base (not shown) disposed between the target archery (2) and the antagonist arch (3) It may be.

Meanwhile, accurate placement guide information g1 and g2 of the fixture for fixing the final digital prosthesis 300 to the target archery may be calculated based on the 3D work image 1d. Here, the implantation guide information (g1, g2) is preferably understood as information on the position and orientation of the fixture is selected in consideration of the internal organization information of the target arch and the mastication pressure with the clavicle arch. In addition, the placement guide information (g1, g2) may include design information about the drilling direction and depth of the perforations formed in the alveolar bone for the placement of the fixture. At this time, it is preferable to understand that the insertion guide information (g1, g2) includes preset fixture insertion information.

In this case, the insertion guide information (g1, g2) may be displayed as a reference line for guiding the placement position and direction of the preset fixture. Alternatively, the placement guide information may be displayed by virtually arranging a virtual fixture 7d which is three-dimensional digital data. Here, the fixture is preferably understood as an actual fixture actually placed in the alveolar bone, and the virtual fixture 7d is preferably understood as digital data corresponding to the actual fixture.

In detail, the CT image 4d including the internal tissue information is displayed on the 3D working image 1d, and the internal tissue information is included in the 3D surface information included in the target arch side scanning image 2d. Are arranged to match. Accordingly, the three-dimensional work image 1d may display image data in a form in which a surface profile of the target arch of the target arch is enclosed on the outer surface of the target arch of the target arch.

At this time, when the target arch is the mandible of the complete edentulous, the fixture can be set to the placement guide information (g1, g2) in four places, such as two anterior side and two posterior side. Here, the anterior side has a large amount of alveolar bone at the periphery, and there is no distribution of nerve tissue at the lower side, so the anterior placement guide information g1 may be set in the vertical direction. In the posterior side, the alveolar bone at the periphery of both ends of the lower jaw is substantially absent, and the neural tissue 4a is distributed along the lower part. Therefore, the posterior side placement guide information g2 may be set in the inclined direction so that the fixture placed on the posterior side avoids the neural tissue 4a and a strong support force is formed.

On the other hand, the surgical guide 50d is a fixing groove 51d is set on the basis of the three-dimensional surface information included in the target arch-side scanning image (2d), the predetermined direction outward from the fixing groove (51d) The outer profile spaced apart to have a thickness of is set. And, it is designed to include a guide hole (52d) is connected between the fixing groove (51d) and the outer surface profile, the through direction is set in response to the insertion guide information (g1, g2). At this time, the surgical guide, the fixing groove and the guide hole described as 50d, 51d and 52d are preferably understood as design information which is digital data designed on the 3D work image 1d. In addition, the surgical guides, the fixing grooves and the guide holes, which are represented by 50, 51 and 52, are preferably understood as the actual guides and their respective divisions.

Therefore, when the manufactured surgical guide 50 is disposed to surround the target archery 2, the fixing groove 51 is fixed to the outer surface of the target archery 2. Accordingly, the penetration direction of the guide hole 52 may be disposed to correspond to the insertion guide information g1 and g2 calculated from the three-dimensional work image 1d. In addition, the forming direction of the drilling by the drilling means such as a drill and the insertion direction of the fixture can be accurately guided through the guide hole 52. Therefore, the position of the fastening hole formed in the metal frame 320 of the final digital prosthesis to be finally manufactured can correspond exactly. Through this, since the final digital prosthesis is accurately and precisely installed in the oral cavity, the soft tissue is prevented from being pressed or flowed during the chewing or occlusion of the prosthetic subject, thereby minimizing discomfort.

Here, the prepared surgical guide 50 penetrates the center portion and has a low friction coefficient and is fitted with a sleeve 53 made of a metal material such as brass, which is a wear-resistant material. That is, in the present invention, guided to the guide hole 52 is preferably understood to be guided substantially to the inner circumference of the sleeve (53). Therefore, the outer peripheral surface of the one side of the drilling means is joined to the inner circumference of the guide hole 52, while the placement position is accurately guided, while the frictional force is reduced and the damage of the wear is prevented, so the direction and the position accuracy of the drilling and the fixture are remarkably increased. Can be improved.

In addition, it is preferable that a flat reference surface 54 orthogonal to the penetrating direction of the guide hole 52 is formed on the outer edge surface of the guide hole 52 opposite to the fixing groove 51. Therefore, the stopper protrusion formed in the puncturing means is restrained by the flat reference plane 54 so that the insertion depth of the puncturing means is limited, thereby preventing excessive damage of the alveolar bone and contact with the nerve tissue. Accordingly, the surgical guide 50 is fixedly bonded to the target archery, and the placement position of the fixture is guided through the guide hole 52 so that a perforation is formed in the target archery 2 and the fixture is implanted. do.

In addition, the virtual fixture 7d and the virtual abutment 8d may be virtually disposed in the three-dimensional work image 1d corresponding to the insertion guide information g1 and g2. Here, the virtual abutment 8d virtually disposed in the three-dimensional work image 1d corresponds to surface information of the actual abutment actually placed in the target arch-side gum part, and corresponds to the physical abutment. It can be displayed as digital data on the overall surface information.

In detail, in the case of the anterior side, the virtual fixture 7d and the virtual abutment 8d are vertically disposed in correspondence with the anterior placement guide information g1 set in the vertical direction. In the case of the posterior side, the virtual fixture 7d is inclined in correspondence to the posterior posterior placement guide information g2 set in an inclined direction so as to prevent interference with the nerve tissue 4a. At this time, even when the virtual fixture 7d is virtually disposed obliquely on the posterior side, it is preferable that the coupling part side of the virtual abutment 8d extends in the vertical direction g3 regardless of the anterior side and the posterior side. Therefore, the virtual abutment for the straight general abutment may be virtually arranged on the anterior side, and the virtual abutment for the bent multi abutment may be virtually arranged on the posterior side.

In this case, the surgical guide 50 in which the guide hole 52 is set according to the insertion guide information g1 and g2 in a state where the virtual fixture 7d and the virtual abutment 8d are virtually arranged. Can be designed. In addition, the temporary digital prosthesis 14 may be designed in which the coupling region 19d is aligned to correspond to the coupling profile of the virtual abutment 8d. That is, the design information of the surgical guide 50 and the temporary digital prosthesis 14 may be acquired and manufactured at the same time based on the three-dimensional work image 1d on which the virtual fixture 7d is virtually arranged. .

Therefore, in the state where the surgical guide 50 and the temporary digital prosthesis 14 are prepared at the same time, perforation is formed through the surgical guide 50 and the fixture is placed. In addition, after the insertion of the fixture is completed, the step of removing the surgical guide 50 and installing the abutment and installing the temporary digital prosthesis 14 may be continuously and quickly performed. Through this, the overall process from the calculation of the placement guide information (g1, g2) and the manufacture of the final digital prosthesis 300 can be simplified and the required time can be significantly reduced.

In addition, since the surgical guide 50 and the temporary digital prosthesis 14 are designed based on the same 3D work image 1d, the planning and manufacturing period for prosthetic manufacturing can be shortened. Therefore, since the number of visits of the prosthetic subject to visit the dentist or the procedure support center is minimized for obtaining the images necessary for manufacturing the surgical guide 50 and the temporary digital prosthesis 14, inconvenience may be significantly reduced.

Furthermore, the surgical guide 50 and the temporary digital prosthesis 14 can be designed and manufactured simultaneously based on the three-dimensional working image 1d. Therefore, after removing the surgical guide 50 installed in the oral cavity and accurately guiding the formation of the aperture and the fixture placement, the installation and correction of the temporary digital prosthesis 14 may be continuously performed. Through this, the overall process of manufacturing the final digital prosthesis can be simplified and the manufacturing time can be shortened.

7 is an exemplary view illustrating a design process of a temporary digital prosthesis in the method of manufacturing a digital prosthesis according to an embodiment of the present invention, and FIG. 8 is a process of correcting a temporary digital prosthesis in a digital prosthesis manufacturing method according to an embodiment of the present invention. It is an exemplary diagram showing.

As shown in Figures 7 to 8, based on the three-dimensional surface information, the temporary shaping surface 17 profile to be matched with the target archery (2) is set, corresponding to the implantation guide information (g1, g2) The temporary digital prosthesis 14, in which the engaging region 19 is arranged in alignment, can be designed and manufactured. In addition, the manufactured temporary digital prosthesis 14 is installed on the target archery 2 in which the fixture f is placed, and the temporary digital prosthesis 17 is obtained for the temporary digital prosthesis 14 corrected. The correction scanning image can be set.

In detail, auxiliary surface information of the target archery 2 in which the fixture f is implanted may be obtained. The temporary digital prosthesis 14 may be designed and manufactured based on the auxiliary surface information and the occlusal information. Here, the three-dimensional work image (1d) is obtained including the three-dimensional surface information, the clavicle-side surface information and the internal tissue information, the three-dimensional surface information when designing the temporary digital prosthesis 14 The secondary surface information may be replaced and corrected. Of course, in some cases, the temporary digital prosthesis 14 may be designed and manufactured based on the three-dimensional surface information and the occlusal information. In this case, the three-dimensional surface information is preferably understood as image data obtained by scanning the gum part object including the implantation guide information, the auxiliary surface information is a scanning image for the fixture implanted in the oral cavity of the prosthetic subject It is desirable to understand the image data included.

In addition, the occlusal information may further include three-dimensional chewing surface information and orthodontic information of the remaining teeth included in the clavicle arch 3 together with the vertical height VD. Accordingly, a profile of the temporary occlusal surface portion 18d that is mated with the clavicle arch 3 may be set based on the occlusal information. At this time, when the clavicle arch 3 is also edentulous, a profile of the temporary occlusal surface 18d may be set based on preset standard dental information.

Here, the standard dental information is preferably understood as a set of information in which digital data corresponding to each tooth corresponds to a predetermined dental arch line. The standard orthodontic information is calculated and selected as a standardized average value for the dental arch line, vertical height and tooth position by gender and age, but one standard orthodontic information corresponding to the prosthetic subject is selected and the 3D work image ( May be virtually arranged in 1d).

In addition, the auxiliary surface information is included in the auxiliary scanning image 2e obtained by scanning the target archery 2 in which the fixture is placed. In this case, the auxiliary surface information is displayed as digital data on the surface of the target archery including the engaging portion 91e profile of the abutment, and is a temporary type that is fitted to the target archery 2 in which the fixture is placed. It is used as design information of the haptic surface 17d.

Meanwhile, the coupling portions of the temporary prosthesis, the temporary gum portion, the temporary tooth portion, the temporary fitting groove, the temporary occlusal surface portion, the coupling region, and the abutment are described as 14d, 15d, 16d, 17d, 18d, 19d and 91e. It is preferable to understand the digital data displayed on the dimensional working image 1d. In addition, the coupling portion of the temporary prosthesis, temporary gum portion, temporary tooth portion, temporary fitting groove, temporary occlusal surface portion, coupling region and abutment described and described as 14, 15, 16, 17, 18, 19 and 91 is actually It is desirable to understand the provisional prosthesis and abutment and the parts that are made or provided. At this time, the spacing between the temporary mating surface 17d profile and the temporary occlusal surface 18d profile is preferably set based on the vertical diameter VD.

In addition, it is preferable that the coupling region 19d corresponding to the coupling portion 91e profile of the abutment and extending toward the temporary occlusal surface portion 18d is aligned on the temporary mating surface 17d side. Here, the coupling area (19d) is a portion that is fixed to the coupling portion 91 of the abutment implanted in the target archery (2) when the manufactured temporary digital prosthesis (14) is installed in the target archery (2) It is preferable to understand. In addition, the abutment is placed in the target archery, it is preferable to understand that the lower end of the abutment is substantially fixed to the fastening groove formed in the upper end of the fixture.

In this case, the coupling region 19d may be virtually arranged to overlap the temporary digital prosthesis 14d corresponding to the placement position of the fixture, and the support cylinders may be aligned and replaced. Here, the support cylinder is a component for mediating the temporary digital prosthesis and the fixture. In the present invention, the support cylinder is preferably understood as digital data about an actual support cylinder.

In addition, the prepared temporary digital prosthesis 14 may be applied in the oral cavity, but may be formed of a synthetic resin material capable of cutting through a cutting tool while having a predetermined strength to minimize deformation during mastication. Therefore, in the calibration process of the temporary digital prosthesis 14 to be described later, the cutting correction can be easily performed so as to maximize the occlusal / matching accuracy of the inside of the oral cavity and the implanted abutment.

In addition, since the temporary tooth part 16 and the temporary gum part 15 are manufactured integrally, manufacturing time and manufacturing period can be reduced, manufacturing convenience can be significantly improved. The temporary digital prosthesis 14 has the temporary gum portion 15 and the temporary occlusal surface portion 18 formed at one end of the coupling region 19 in the temporary mating surface 17 through a three-dimensional printer. The temporary tooth part 16 may be manufactured by integrally three-dimensional printing. Alternatively, the temporary digital prosthesis 14 may be prepared with a milling or mold apparatus to integrally manufacture the temporary tooth part 16 and the temporary gum part 15.

On the other hand, the three-dimensional working image (1d) is obtained including the three-dimensional surface information, the clavicle side surface information and the internal tissue information, the three-dimensional surface information is the auxiliary surface when designing the temporary digital prosthesis It can be replaced by information.

In detail, when the 3D work image 1d is acquired, the virtual fixture and the virtual abutment corresponding to the fixture and the abutment are included in the placement guide information g1 and g2. Can be virtually arranged accordingly. In this case, the auxiliary scanning image 2e is the three-dimensional working image while the coupling portion 91e profile of the abutment displayed on the auxiliary surface information matches the virtual abutment virtually disposed on the three-dimensional surface information. It can be arranged in alignment with (1d).

As the three-dimensional surface information is erased and replaced with the auxiliary surface information, the three-dimensional working image 1d includes the surface information of the antagonist arch side and the surface of the gum surface of the target arch portion where the coupling portion of the fixture protrudes. Digital data may be displayed. Therefore, the temporary digital prosthesis 14d is precisely designed based on the three-dimensional working image 1d in which the three-dimensional surface information is replaced and corrected by the auxiliary surface information.

On the other hand, if the prepared temporary digital prosthesis 14 is installed in the oral cavity and occluded with the clavicle arch 3, the profiles of the temporary mating surface 17 and the temporary occlusal surface 18 by the bite pressure, respectively It is corrected to correspond to each outer profile of the target archery 2 and the clam arch 3. Then, a corrected scanning image of the corrected temporary digital prosthesis 14 is obtained.

In this case, one side of the temporary mating surface 17 and the coupling region 19 may be applied to the target archery 2 in which a curable resin is coated to protrude the coupling portion 91 of the abutment. When the curable resin is pressurized by the occlusal pressure, a gap between the temporary mold mating surface 17 and one side of the coupling region 19, the target archery 2, and the coupling portion 91 of the abutment is provided. It may be filled by the curable resin. Subsequently, as the curable resin is cured and fixed, a profile of the temporary mold matching surface 17 and the coupling region 19 may be corrected by including a mold fitting correcting surface portion r11 formed by the curable resin.

In addition, the temporary occlusal surface portion 18 may be adjusted to be optimized based on the chewing sensitivity of the prosthetic subject by cutting on the basis of the mastication of the remaining teeth of the clavicle arch 3 formed by the occlusal pressure. Through this, the profile of the temporary occlusal surface 18 can be corrected by including an occlusal correction surface portion r12 that matches the mastication surface of the remaining tooth of the clavicle arch 3. Then, when the entire outer surface of the temporary digital prosthesis 14 corrected using the imaging device (10 in FIG. 2) is scanned, images of the registration compensation surface portion r11 and the occlusal correction surface portion r12 are obtained. The corrected scanning image may be generated.

9 and 10 are exemplary views showing a process of setting a support protrusion in a digital prosthetic manufacturing method according to an embodiment of the present invention, Figure 11 is a perspective view of a metal frame in a digital prosthetic manufacturing method according to an embodiment of the present invention. to be. And, Figure 12 is a bottom view of the metal frame in the digital prosthetic manufacturing method according to an embodiment of the present invention, Figure 13 is an exploded perspective view of the inside of the final digital prosthesis manufactured according to an embodiment of the present invention partially projected. .

9 to 13, a plurality of fastening holes 302a are set in correspondence with the placement guide information g1 and g2, and a mating surface 323 corresponding to the contour profile of the gum part object. The formed metal frame 320 and the artificial tooth 310 whose height is set based on the occlusal information are respectively designed and manufactured (s40). In addition, a coating composition matching the color of the gum is applied and cured to the gum corresponding area of the outer surface of the metal frame 320, and an artificial tooth 310 is coupled to the metal frame 320 to provide a final digital prosthesis 300. It is manufactured (s50).

Here, it is preferable that the external profile of the gum part object is understood as a concept in which the three-dimensional surface information and the profile-correcting surface portion r11 formed by the curable resin include the profile of the temporary shape surface 17. Do. The virtual gum extension part 321d may be virtually disposed along the dental arch line of the gum part object displayed on the 3D work image 1d. In addition, the virtual artificial teeth 310d are virtually arranged in correspondence with the occlusal information, and the virtual support protrusions 322d protruding from the virtual gum extension part 321d corresponding to the virtual artificial teeth 310d individually are set. This is preferable.

In addition, the fastening hole 324 is formed in the vertical direction of the metal frame 320 penetrates through the stepped portion of the fastening screw head fixing the abutment coupled to the fixture (f) is formed on the inner circumference Preferably, the artificial tooth is provided with a communication hole 312 communicating with the fastening hole in response to the placement guide information.

In addition, the metal frame 320 including the gum extension 321 and the support protrusion 322 is designed and manufactured to correspond to the outer profile of the virtual gum extension 321d and the virtual support protrusion 322d. This is preferable. Here, the shape and volume of the support protrusion 322 is a joint area and a support cross-sectional area of the support groove 311 of the artificial tooth 310 manufactured to correspond to the virtual artificial tooth 310 is the position of the arch line It is preferable to set the shape and volume of the artificial tooth 310 to be proportional to the star chewing load.

In detail, the outer profile of the artificial tooth 301 is set based on the virtual artificial tooth 310d of the virtual dental template extracted along the arc length of the arch line and the vertical diameter VD from the digital library. Do. Here, the digital library means a database for a plurality of virtual dental templates, and includes a plurality of virtual dental templates having an arc length of the dental arch line and the vertical diameter (VD) as optional items.

In addition, each of the virtual dental template has a chewing cross-section for each tooth type, and preferably includes three-dimensional appearance information for a plurality of virtual artificial teeth having a width and height normalized according to the arc length and the occlusal height. In detail, one virtual dental template is a set of virtual artificial teeth such as an incisor disposed at the front end of the arch line, a canine disposed at the side of the incisor, a premolar disposed at the side of the canine, and a molar placed at the side of the premolar side. It includes, but includes the appearance information for a plurality of virtual artificial teeth that can be arranged to form one arch line. In this case, the virtual dental template includes the size of the dental arch line of the adult male and female, the tooth width by size of the dental arch line, the cross-sectional shape by location, the tooth height by occlusal height, etc. do. That is, one virtual dental template means a plurality of virtual artificial teeth having a standardized tooth width according to the arc length, a standardized tooth height according to the occlusal height, and a mastication cross section according to the position on the arch line. It is preferable to understand.

At this time, if the arc length and vertical diameter (VD) of the arch line are set, one virtual dental template may be extracted from the digital library, and the virtual artificial tooth in the extracted virtual dental template represents the inside of the mouth of the subject. The virtual work image 1e may be virtually arranged. Of course, in some cases, the outer surface profile of the artificial tooth 301 is based on the occlusal correction surface portion r12 in which the profile of the temporary occlusal surface portion 18 matches the mastication surface of the remaining tooth on the clavicle arch 3 side. It may be set.

The virtual gum extension 321d for manufacturing the gum extension 321 is virtually disposed on the virtual work image 1e. That is, the virtual artificial tooth 310d is virtually disposed along the surface of the virtual gum extension 321d, and the artificial tooth 310 is disposed through the virtual artificial tooth 310d and the virtual gum extension 321d. 301 and gum extension 321 can be designed and manufactured quickly. The arch line and its arc length may be calculated according to an imaginary line connecting the positions of natural teeth or replacement teeth in the upper region of the target arch-side scanning image 2d.

On the other hand, the virtual gum extension portion 321d which is solid three-dimensional area information of a size exceeding the upper volume of the target archery side scanning image 2d to be coupled to surround the surface of the target archery side scanning image 2d ) May be virtually deployed. Here, it is preferable that the virtual gum extension part 321d is included in the virtual metal frame. In this case, a virtual mastication surface k may be set in the virtual working image 1e according to the outer surface profile of the clavicle arch in the perforated arch-side scanning image 3d. For example, if both of the subject's jaw are both edentulous, the virtual cheongmyeon may be set to partition the occlusal space between the target arch and the clavicle arch at a predetermined ratio. It may be set along the chewing end of the opposing arch side antagonist tooth opposite to the side scanning image 2d.

The virtual artificial tooth 310d may be virtually arranged such that the chewing end is aligned along the virtual chewing surface k. As such, the overall shape and arrangement of the artificial tooth 301 installed in the gum extension 321 may be accurately set to match the occlusal object through the virtual arrangement of the extracted virtual artificial tooth 310d. And the occlusion reliability between the object to be improved can be improved the precision of the product design.

The outer profile of the support protrusion 322 may be set to correspond to the virtual support groove 311d of the virtual artificial tooth. At this time, the virtual support groove 311d is predetermined for each of the virtual artificial teeth, the cross-sectional area of the upper and lower may be the same or may be provided in a narrow upper portion and a wide lower portion. In addition, the virtual support groove 311d is the upper end is flat, so that the load is stably supported at the time of mastication, it is more preferably formed so that the support cross-sectional area and height in the mastication direction corresponding to the support cross-sectional area and height of the artificial tooth (301).

Of course, the outer profile of the support protrusion 322 may be set by a standard assembly model that is embedded in the virtual artificial tooth, and stretched to correspond to the outer profile of the virtual artificial tooth. Here, the standard assembly model has a cross-sectional area of the upper and lower portions so that the support protrusion 322 integrally protruded from the gum extension 321 can be inserted into the support groove 311 of the artificial tooth 301 without being caught. It is provided with the same shape or the upper part is narrow and the lower part is wide. At this time, the standard assembly model is stretched within the area included in the virtual artificial tooth (310d), the minimum distance from the outer surface of the standard assembly model to the outer profile of the virtual artificial tooth (310d) is a minimum support It is desirable to stretch to match the thickness.

Here, the minimum support thickness may be preset according to the material strength of the artificial tooth 301 so that the artificial tooth 301 having the support groove 311 formed therein is not broken by the chewing pressure. Accordingly, the virtual support protrusion 322d may be set to be maximized within the limit without the risk of fracture of the artificial tooth 301, and may be set to correspond to the shape and volume of the artificial tooth 301. In this case, the shape and volume of the artificial tooth 301 correspond to the shape and the volume of the support protrusion 322 manufactured based on the virtual support protrusion 322d within an appropriate error range. It is preferable to understand that it is proportional to the shape and volume of the artificial tooth 301 manufactured based on 301d.

Meanwhile, the virtual fastening hole 324d penetrates through the virtual gum extension part 321d and the virtual support protrusion 322d in correspondence to the position of the fixation f, but the inner fastening hole 324d is in contact with the fixture f. It is preferable that a virtual stepped portion is formed at which the head portion of the fastening screw for fixing the abutment to be coupled is formed. In addition, the virtual artificial tooth (310d) is preferably set in the virtual communication hole (312d) in communication with the virtual fastening hole (324d) corresponding to the insertion guide information (g1, g2).

In detail, the virtual fastening hole 324d corresponds to the implantation position of the fixture f implanted on the basis of the implantation guide information g1 and g2, and the virtual gum extension 321d and the virtual support protrusion 322d. It is preferable that a plurality of through holes are formed). Here, the fixture f and the virtual fixture 7d corresponding to the abutment and the coupling part 91e of the virtual abutment correspond to the placement guide information g1 and g2 on the virtual work image 1e. Can be virtually deployed. In addition, the virtual fastening hole 324d is preferably disposed at the upper end of the coupling portion 91e of the virtual abutment. The virtual communication hole 312d corresponds to the position of the virtual fixture 7d and the coupling portion 91e of the virtual abutment 310d according to the insertion guide information g1 and g2. Is preferably arranged virtually.

In addition, it is preferable that the virtual stepped portion is formed at the inner circumference of the head portion of the fastening screw fastened to the inner circumferential fastening groove of the abutment coupled to the fixture f. At this time, the fastening screw is preferably understood as a member for fixing the abutment and the metal frame to each other. Further, a second fastening screw may be further provided to mediate the coupling between the fixture f and the abutment separately from the fastening screw. Of course, in some cases, the fastening screw may be provided to fix the abutment to be penetrated through the metal frame and the entire fixture.

Here, the virtual stepped portion may be positioned and disposed on an upper end of the coupling portion 91e of the virtual abutment that is virtually disposed. Accordingly, the head of the fastening screw which is formed at the upper end of the coupling part of the abutment and inserted into the fastening hole at the position of the stepped part manufactured based on the virtual stepped part may be caught by the stepped part.

In addition, the design information of the gum extension part 321 and the artificial tooth 301 is transmitted to a manufacturing apparatus (30 of FIG. 2) such as a three-dimensional print to manufacture the metal frame 320 and the artificial tooth 301. Can be. As such, all design processes of the product are performed based on the three-dimensional image without a separate impression acquisition, so that a metal frame of a precise inner profile that is precisely molded to the subject's gums without distortion due to pressure may be designed and manufactured. .

In addition, the fastening hole 324 manufactured based on the virtual fastening hole 324d and the virtual fastening hole 324d is formed of the fixture f implanted based on the insertion guide information g1 and g2. It is designed and manufactured corresponding to the placement position. Therefore, the surgical guide 50 and the fastening hole 324 designed and manufactured based on the implantation guide information g1 and g2 are designed and manufactured based on the same implantation guide information g1 and g2. Manufacturing precision can be significantly increased. That is, the position of the fixture guided through the surgical guide 50 and placed in the oral cavity, and the position of the lower end portion 324a of the fastening hole 324 to be fitted to the abutment coupled to the fixture. Are placed, designed and manufactured to substantially the same location.

In addition, the lower end portion 324a of the fastening hole 324 is preferably designed based on the lower end of the virtual fastening hole to correspond to the outer surface profile of the coupling portion 91 of the abutment. Accordingly, since the lower end portion 324a of the fastening hole 324 is formed corresponding to the shape of the coupling portion 91 of the abutment, the flow due to the tolerance space or the chewing pressure is minimized, so that the metal frame is in the oral cavity. Since it is fixed, the precision and fit of the product can be improved.

On the other hand, the metal frame 320 is a support structure for supporting the artificial tooth 310 is fixed to the target arch of the prosthetic target teeth. At this time, the prosthetic target tooth means a tooth that requires the installation of the prosthesis among the upper and lower jaw inside the subject's mouth. The metal frame 320 is provided with a mating surface 323 formed at an opposite end of the target archery to correspond to an outer profile of the gum part object including the target arch. Hereinafter, the prosthetic target tooth will be described and illustrated as an example of the lower jaw in the oral cavity, and one end is preferably understood as being described as the lower end of the metal frame 320.

Here, the metal frame 320 is provided in an arc shape surrounding the entire arch line of the target arch, and the target arch is inserted into the mating surface 323. In addition, a support protrusion 322 is formed at the other end of the metal frame 320 to correspond to the arch line of the target archery. At this time, the dental arch line means a U-shaped curve representing the position of the replacement tooth to be installed to replace the removed or missing natural or removed tooth along the upper region where the tooth can be installed in the target arch do. In other words, the arch form line is preferably understood as a virtual arc-shaped curve connecting a position corresponding to a plurality of removed / lost natural teeth or a position corresponding to a plurality of replacement teeth to be installed to replace the natural tooth.

In addition, the metal frame 320 is preferably formed of a metal material such as titanium having high strength and biocompatibility. Here, the metal frame 320 may be manufactured by three-dimensional printing a frame base corresponding to three-dimensional surface information of the virtual metal frame with a high temperature vaporizable resin material. In this case, while the frame base is embedded in the foundry sand, the cavity corresponding to the volume of the frame base may be generated while being evaporated by high temperature. Accordingly, the metal frame 320 may be manufactured by filling molten metal in the cavity. In addition, the manufactured metal frame 320 may be finally finished as milled and finished. Therefore, since the shape of the metal frame 320 is manufactured through three-dimensional printing, design precision can be significantly increased.

In addition, a primer layer may be formed by applying and drying a first coating liquid that shields the surface color of the corresponding area of the gum part of the metal frame 320 to the surface of the metal frame 320. In addition, a coating composition including a base resin, a pigment of a predetermined color and a dispersant may be applied and cured on the surface of the primer layer to form a color layer that matches the color of the target arch. In this case, the coating composition may include a photoinitiator activated in the ultraviolet region to cure through the ultraviolet photopolymerizer. And, for reinforcing the surface of the color development layer The second coating solution may be applied and dried to form a surface coating layer. Here, the primer layer and the coloring layer may be applied and formed on the outer surface of the gum corresponding area exposed when installed in the oral cavity of the metal frame 320, but in some cases the coating and coating along the entire outer surface of the metal frame 320. It may be formed. Accordingly, the surface color of the corresponding area of the gum part of the metal frame 320 may be matched with the color of the target archery to provide an aesthetic sense of stability.

In addition, in some cases, the metal frame 320 of a metal material may be provided with a cover part such as a ceramic material matching the gum color so as not to be visually exposed.

In addition, the support protrusion 322 is provided in a protrusion shape integrally protruding from the surface of the metal frame 320 so that the artificial tooth 310 is coupled, within the support groove 311 of the artificial tooth 310 It is preferable that the upper / lower cross-sectional area is the same or the upper and lower portions are narrow and the lower portion is wide so as to be inserted without being caught.

In addition, the fastening hole 324 penetrates the gum extension part 321 and the support protrusion 322 in correspondence to the position of the fixture (f), it is coupled to the fixture (f) in the inner circumference Preferably, a stepped portion is formed in which the head portion of the fastening screw fastened to the abutment is formed. That is, the fastening hole 324 is preferably formed to penetrate a plurality of places along the vertical direction of the metal frame 320 corresponding to the position of the fixture (f).

The fastening screw is inserted into the fastening hole 324, and the head of the fastening screw is caught in the stepped portion. Here, the lower end of the fastening screw is fastened to the engaging portion 91 of the abutment coupled to the fixture (f), it is preferable that the head of the fastening screw is caught by the stepped portion.

In addition, the lower end portion 324a of the fastening hole 324 is preferably manufactured to be virtually designed to be joined to the outer profile of the coupling portion 91 of the abutment. Accordingly, as the coupling portion 91 of the abutment is coupled to the lower end portion 324a of the fastening hole 324, a rigid support structure can be maintained.

Here, the fastening hole 324 is preferably manufactured based on the design information of the virtual fastening hole (324d). Then, the coupling portion of the abutment is inserted into the fastening hole 324 may be fastened to each other through the fastening screw.

On the other hand, the artificial tooth 310 is formed on the upper end of the chew surface corresponding to the type of teeth of the dental arch line, the support groove 311 is formed at the lower end is coupled to the upper end of the metal frame 320 Can be. Here, the mastication surface is preferably standardized according to the position of the tooth and the type of tooth for each position. That is, the location and type of location of the adult male and female are standardized through statistical processing, so that the type of artificial tooth 310 to be installed on the dental arch line can be set. Can be set.

For example, the installation location and the location-specific type of the artificial tooth 310 are set according to the standard tooth location and location-specific type where the incisor, canine, premolar, and molar are sequentially arranged toward the center of the arch line. This is preferred. And, the mastication surface of each artificial tooth 310 installed to replace the incisor, canine, premolar, molar and the like is preferably set to correspond to the standard mastication surface, such as incisor, canine, premolar, molar. At this time, the artificial tooth 310 may be provided to replace each one of the natural teeth, it is also possible to have a shape in which one or more teeth are arranged in series to replace one or more natural teeth at the same time.

The support protrusion 322 is preferably provided to correspond to each artificial tooth 310. That is, when the artificial tooth 310 is provided to replace each natural tooth, the support protrusion 322 may be provided in a plurality to correspond to the number of natural teeth, the artificial tooth 310 is one or more natural teeth When provided to replace the support protrusion 322 may be provided with less than the number of natural teeth. Hereinafter, the support protrusion 322 and the artificial tooth 310 will be described and illustrated by way of example, each provided to replace one natural tooth.

On the other hand, the support protrusion 322 is formed to protrude so as to be located in the central portion of each artificial tooth 310, the surface of the metal frame 320, that is, interpolated from the gum extension 321 to the artificial tooth 310 It is preferable to protrude to such a size. That is, each of the support protrusions 322 is formed to protrude from the cross-sectional center point of each artificial tooth 310, it is preferably formed to a size that does not protrude to the outside of the artificial tooth (310). At this time, each artificial tooth 310 is inserted into the support protrusion 322 into the support groove 311, the bonding between the inner surface of the support groove 311 and the outer surface of the support protrusion 322 through the adhesive for the implant. As it may be fixed to the metal frame 320.

Accordingly, the artificial teeth 310 are independently manufactured for each tooth and are coupled to the support protrusions 322 of the metal frame 320, respectively, and thus the inter-tooth teeth and the tooth / tooth gum boundaries can be clearly expressed, resulting in high aesthetics. As an advanced product can be provided. In addition, since only the artificial tooth 310 damaged during use can be easily replaced and used, maintenance convenience of the product can be improved.

In addition, unlike the conventional method of pressing and inserting the artificial tooth 310 to the surface of the frame of the uncured synthetic resin or ceramic material and curing it integrally, the support protrusion 322 protruding from the surface of the metal frame 320 is the artificial tooth 310 Inserted and bonded to the support groove 311 of the () and can be stably combined even in the state that each of the hardening is completed, the deformation and distortion of the metal frame 320 due to the coupling of the artificial tooth 310 is minimized to improve the precision of the product Can be.

On the other hand, the shape and volume of the support protrusion 322 is the shape and volume of the artificial tooth 310 so that the bonding area and the support cross-sectional area to the support groove 311 is formed in proportion to the chewing load for each position of the arch line. It is preferable to set corresponding to the volume. That is, each of the support protrusions 322 is preferably set in shape and volume corresponding to the shape and volume of each artificial tooth 310 is inserted and coupled.

For example, the support protrusion inserted into the artificial tooth of a large volume is provided with a large volume, and the support protrusion inserted into the artificial tooth of a small volume is preferably provided of a small volume. At this time, the volume of each support protrusion 322 is preferably set to be reduced to a predetermined ratio range from the volume of each artificial tooth to be inserted. That is, the support protrusion 322 may be formed to have a volume that does not protrude out of the surface of the artificial tooth is reduced to a predetermined ratio range of the volume of the artificial tooth.

In addition, the support protrusion inserted into the artificial tooth corresponding to the incisor may be provided in a shape similar to that of the incisor, and the shape of each support protrusion may be set to correspond to the shape of each artificial tooth such as a canine, a premolar, and a molar tooth. Here, each of the support protrusions 322 is flat to the upper end so that the load is stably supported at the time of mastication, the support end area and height in the mastication direction is formed to correspond to the support end area and height of each artificial tooth 310 corresponding thereto. More preferred. That is, the shape of the support protrusion is understood to encompass the overall outer shape or the shape of the support cross section in the chewing direction, and the support cross section of the support protrusion is provided in a shape similar to the support cross section of the artificial tooth or the support of the artificial tooth. It may be provided with a size proportional to the cross-sectional area.

Accordingly, each artificial tooth 310 may be supported and coupled by a support protrusion 322 having a shape and volume corresponding thereto, and a joint area / operation direction between each artificial tooth 310 and each support protrusion 322. The supporting area of can be maximized. Accordingly, the plurality of support protrusions 322 may be provided to correspond to the shape and volume of each artificial tooth 310 to provide a joint area proportional to the chewing load of the artificial tooth 310, and each of the support protrusions 322. In accordance with the deviation of the support area of the gum extension portion 321, each part of the gum extension is loaded with a similar distribution to the actual teeth, so that the feeling of unity is maximized to improve the durability and wearing satisfaction of the product.

On the other hand, artificial teeth such as large incisors and molars are loaded with high chewing loads, and artificial teeth such as small canines and premolars are loaded with low chewing loads. In this case, a large volume of the support protrusion is inserted and supported by the artificial tooth, and a large bonding area may be formed between the support groove 311 and the support protrusion 322 of the artificial tooth 310.

Accordingly, the joint area proportional to the chewing load loaded on the artificial tooth 310 may be provided. As the load increases, the fixing force on the metal frame 320 increases, so that the artificial tooth having a high support load is loaded with a large volume. Even up to 310 may be stably fixed to the metal frame 320.

In addition, the support protrusion 322 is provided with a support cross-sectional area proportional to the support cross-sectional area of the artificial tooth 310 so that the support load for each artificial tooth 310 coincides with the distribution of the mastication load for each position of the dental arch line. Is preferred. In this case, a high chewing load may be loaded through the support protrusion of a wide support cross-sectional area in the gum extension part having a large cross-sectional artificial tooth such as a large incisor and a molar tooth, and a narrow cross-sectional artificial tooth such as a small tooth or premolar The gum extension installed may be loaded with a low chewing load through the support protrusion of a narrow support cross-sectional area. That is, since the support protrusions to which each artificial tooth is coupled are provided to correspond to the shape and volume for each kind of artificial tooth, it is possible to provide a support cross-sectional area proportional to the chewing load for each kind of artificial tooth. In addition, pressure corresponding to the location of the chew load distribution of each artificial tooth or the dental arch line may be loaded on each portion of the gum extension according to the deviation of the support cross-sectional area of each support protrusion.

In this case, the chewing pressure loaded on the chewing end of the artificial tooth may be transmitted to the respective parts of the surface of the metal frame 320 through the top and bottom surfaces of the support protrusion 322 inserted into the center of the artificial tooth. have. That is, the chewing pressure loaded on the artificial tooth 310 may be separated by each of the support protrusions 322 similarly to the actual teeth and loaded on the metal frame 320. As such, the chewing pressure corresponding to the cross-sectional area of each tooth type such as incisor, canine, premolar, and molar may be loaded on each part of the metal frame 320, and thus, between the gum extension part and the gum part object with a similar chewing pressure distribution of the actual tooth. The sense of unity can be maximized and an advanced product can be provided that minimizes foreign body feeling when inserted into the oral cavity.

On the other hand, the support protrusion 322 is more preferably provided for each tooth position of the arch line. In this case, the support protrusion 322 and the artificial tooth 310 may be divided and provided for each tooth, and the support protrusion 322 may be separated from each other to support each artificial tooth 310. That is, one artificial tooth 310 is provided to each one independently to replace one natural tooth, one support protrusion 322 is provided to support one artificial tooth 310. Here, the artificial tooth 310 may be divided and provided for each tooth, each tooth may be provided integrally manufactured through three-dimensional printing. At this time, even if the artificial tooth 310 is manufactured integrally through three-dimensional printing, it is preferable that each of the supporting grooves 311 corresponding to each of the supporting protrusions 322 is formed in plural numbers.

Accordingly, the artificial tooth 310 may be stably coupled to the metal frame 320, and the boundary between the adjacent artificial teeth 310 on the final digital prosthesis 300, the artificial tooth 310, and the metal frame 320. Since the boundary between the can be clearly expressed, a high quality product with improved aesthetics can be provided.

On the other hand, the communication hole 312 is preferably formed in a plurality of the artificial tooth 310 so as to communicate with the fastening hole 324 corresponding to the insertion guide information (g1, g2). Here, the fastening hole 324 penetrates the gum extension part 321 and the support protrusion 322 in correspondence to the position of the fixture (f), but is coupled to the fixture (f) in the inner circumference Preferably, a stepped portion is formed in which the head portion of the fastening screw fastened to the abutment is formed. In addition, it is preferable that the communication hole 312 communicating with the fastening hole 324 is set in the artificial tooth 310 in response to the insertion guide information g1 and g2.

In detail, the fastening hole 324 is connected to the gum extension part 321 and the support protrusion 322 in correspondence with the insertion position of the fixture (f) implanted based on the insertion guide information (g1, g2). It is preferable to form through a plurality of places. In addition, the fastening hole 324 is preferably disposed and fixed on the upper end of the coupling portion of the abutment. In this case, the fastening screw may be inserted into the fastening hole 324 to be fastened and fixed with the abutment. Accordingly, as the fastening screw is inserted into the fastening hole 324 formed in the metal frame 320 and fastened to the abutment, the metal frame 320 may be fixed to the oral cavity of the prosthetic subject.

In addition, the support groove 311 of the artificial tooth 310 may be inserted into and fixed to the support protrusion 322 of the metal frame 320. Here, the resin is in communication with the fastening hole 324 but injected into the communication hole 312 formed in the artificial tooth 310 may be cured and fixed. That is, the abutment is coupled to an upper end of the fixture f implanted in the oral cavity along the implantation guide information g1 and g2. In addition, the metal frame 320 having the fastening hole 324 is inserted into the upper end of the coupling portion 91 of the abutment. At this time, the engaging portion 91 of the abutment and the lower end portion 324a of the fastening hole 324 are joined. The fastening screw is inserted into the fastening hole 324 to be fastened to the inner circumferential fastening groove of the upper end of the coupling part 91 of the abutment, but the head portion of the upper end is formed in the fastening hole 324. It is caught in the stepped part. Subsequently, the artificial tooth 310 is inserted into the support protrusion 322 of the metal frame 320. At this time, it is preferable that the artificial tooth 310 is inserted, so that the communication hole 312 and the fastening hole 324 communicate with each other. Then, resin is injected into the communication hole 312 and cured.

In addition, the resin injected and cured in the communication hole 312 formed in the artificial tooth 310 may be removed and re-embedded by the operator when re-treatment is required. Accordingly, when a communication hole 312 is formed in the artificial tooth 310 corresponding to the position of the fastening hole 324, and the digital prosthesis is required, the resin injected and cured in the communication hole 312 is a surgical device. By removing it through, it is possible to re-treat without damaging the entire artificial tooth, so the convenience of the procedure can be significantly increased.

On the other hand, the virtual fastening hole may be set based on the placement guide information (g1, g2), but the position and shape of the coupling region in the inner surface profile set in accordance with the surface information of the temporary mating surface corrected in some cases Correspondingly, a virtual fastening hole may be formed. In addition, the occlusal surface portion may be set according to the corrected surface information of the temporary occlusal surface portion to design and manufacture the final digital prosthesis.

In detail, the correction scanning image is corrected by the temporary tooth part (16 in FIG. 8) including the occlusal correction surface part (r12 in FIG. 8) and the temporary gum part (15 in FIG. 8) by the registration correcting surface part. (11 in FIG. 8) The temporary digital prosthesis (14 in FIG. 8) corrected including the profile is obtained by scanning with the imaging device (10 in FIG. 2). Therefore, the correction scanning image is a temporary tooth including the surface information of the temporary occlusal surface portion of the temporary occlusal surface portion (18d of FIG. 7) set in the three-dimensional working image (1d of FIG. 7) including the occlusal correction surface portion. The sub image may be generated to be displayed. In addition, the correction scanning image is a temporary gum including the surface information of the temporal shaping surface corrected by the temporary shaping surface (17d of FIG. 7) set in the three-dimensional working image (1d of FIG. 7) including the shaping correction surface portion. The sub image may be generated to be displayed.

In this case, the terms "comprise", "comprise", "comprise" or "having" described above mean that the corresponding component may be included unless otherwise stated, and thus, other It should be construed that it is possible to include other components rather than to exclude the components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

As described above, the present invention is not limited to the above-described embodiments, but may be modified and implemented by those skilled in the art without departing from the scope of the claims of the present invention. Such modifications are within the scope of the present invention.

100: digital prosthetic manufacturing system 10: imaging device
20: planning unit 30: manufacturing apparatus
50: surgical guide 60: towing device
300: digital prosthesis 302: metal frame
1d: 3D work image g1, g2: Placement guide information

Claims (6)

A first step of obtaining a three-dimensional working image including three-dimensional surface information of the gum sub-object corresponding to the target arch of the prosthetic subject and occlusal information with the clam arch;
Based on the three-dimensional work image, the surgical guide is formed and designed according to the implantation guide information including the fixed groove portion and the predetermined fixture placement information to be matched to the outer profile of the target archery and to the target archery A second step of fixing and molding;
A third step of designing and manufacturing a metal frame having a mating surface corresponding to a plurality of fastening holes and an external profile of the gum part object and an artificial tooth whose height is set based on the occlusal information corresponding to the placement guide information; And
And a fourth step in which a coating composition matching the color of the target archery is applied and cured to the gum corresponding area of the outer surface of the metal frame, and the artificial tooth is coupled to the metal frame to manufacture a final digital prosthesis.
In the third step, the virtual fastening hole is set to match the virtual abutment is extracted from the digital library corresponding to the fixture placement information of the placement guide information and virtually arranged,
The fastening hole corresponding to the virtual fastening hole is formed to penetrate through the vertical direction of the metal frame, and a stepped portion in which a head portion of the fastening screw for fixing the abutment coupled to the fixture is formed on an inner circumference thereof.
The virtual gum extension part is virtually disposed along the dental arch line of the gum part object displayed in the three-dimensional work image, and a virtual artificial tooth is virtually disposed in correspondence with the occlusal information, from the virtual gum extension part to the virtual artificial tooth. Digital prosthesis manufacturing method characterized in that the virtual support projections protruding corresponding to each other is set. delete The method of claim 1,
In the third step, the metal frame including the gum extension and the support protrusions corresponding to the outer profile of the virtual gum extension and the virtual support protrusion is designed and manufactured,
The shape and volume of the support protrusions are in shape and volume of the artificial tooth such that the bonding area and the support cross-section of the support groove of the artificial tooth manufactured in correspondence with the virtual artificial tooth are proportional to the chewing load for each position of the arch line. Digital prosthesis manufacturing method characterized in that it is set correspondingly. The method of claim 1,
In the fourth step, the first coating liquid for shielding the surface color of the gum corresponding region of the metal frame is applied and dried on the surface of the metal frame to form a primer layer;
Applying and curing the coating composition including a base resin, a pigment of a predetermined color, and a dispersant on a surface of the primer layer to form a color layer that matches the color of the target archery;
For reinforcing the surface of the chromophoric layer A second coating liquid is applied and dried to form a surface coating layer,
The coating composition is a digital prosthesis manufacturing method, characterized in that it comprises a photoinitiator activated in the ultraviolet region to be cured through the ultraviolet photopolymerizer. The method of claim 1,
In the fourth step, the frame base corresponding to the three-dimensional surface information of the virtual metal frame is manufactured by three-dimensional printing with a high temperature vaporizable resin material;
The frame base is embedded in the foundry sand and vaporized by high temperature to generate a cavity corresponding to the volume of the frame base;
And a molten metal filled in the cavity to manufacture the metal frame. In the digital prosthetic metal frame to be coupled to a plurality of fixtures placed in the target arch of the prosthetic subject,
A gum extension portion extending along the dental arch line of the target arch form and having a mating surface corresponding to the contour profile of the gum portion object;
The height is set based on the three-dimensional surface information of the gum part object and the occlusal information with the clavicle arch A plurality of support protrusions protruding from the gum extension to be individually inserted into the support grooves of the artificial tooth; And
It includes a coloring layer is applied to the coating area matched with the target archery color in the gum corresponding area of the outer surface of the gum extension,
A fastening hole is formed through the gum extension part and the support protrusion in correspondence with the position of the fixture, and a stepped part in which a head portion of the fastening screw which is fastened to the abutment coupled to the fixture is engaged on the inner circumference thereof is formed. ,
The shape and volume of the support protrusion is provided with a shape and volume corresponding to the shape and volume of the artificial tooth such that the bonding area and the support cross-sectional area with respect to the support groove are proportional to the chewing load for each position of the dental arch line. Metal frame for digital prosthetics.

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