KR102054902B1 - method for manufacturing digital dental prosthesis - Google Patents

Abstract

The present invention provides a digital dental prosthesis manufacturing method to increase convenience and precision in manufacturing. According to the present invention, the digital dental prosthesis manufacturing method comprises: a first step of aligning and matching a scan image and a CT image of a target arch and a pairing arch based on image information about a coupling bite guiding a vertical dimension for each patient to generate a 3D work image including target and pairing surface information and implantation information; a second step of generating, in the 3D work image, a virtual temporal dental prosthesis in which a virtual coupling area corresponding to a coupling part profile of an abutment implanted in the target arch in accordance with the implantation information is set while inner and outer surface parts correspond to the target and pairing surface information; a third step of correcting a temporal dental prosthesis manufactured corresponding to the virtual temporal dental prosthesis to be engaged between the target arch having the abutment implemented thereinto and the pairing arch by engagement pressure and correcting an inner surface part to match with the target arch having the abutment implemented thereinto, and acquiring a corrected scan image of the corrected temporal dental prosthesis; a fourth step of replacing the target and pairing surface information with the corrected scan image, generating a virtual metal frame having a virtual coupling hole set corresponding to a coupling area in which an inner profile is set and corrected in accordance with corrected surface information of the inner surface part of the corrected scan image, and generating a virtual artificial tooth having a height set based on corrected surface information of an outer surface part of the corrected scan image; and a fifth step of coupling the metal frame and the artificial tooth, which are manufactured corresponding to the virtual metal frame and the virtual artificial tooth, respectively, to manufacture a final digital dental prosthesis.

Description

Method for manufacturing digital dental prosthesis

The present invention relates to a method for manufacturing a digital prosthesis, and more particularly, to a method for manufacturing a digital prosthesis with improved 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.

At this time, the prosthesis may be installed in 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 complete prosthesis according to the number of missing teeth.

On the other hand, the prosthesis may be installed in the oral cavity through a fixture placed in the alveolar bone. That is, when a perforation is formed in the alveolar bone, a fixture is placed in the perforation formed. Subsequently, the abutment is installed at the end side of the implanted fixture, and the prosthesis may be firmly installed in the oral cavity as the fastening screw is coupled to the fastening groove into which the abutment is formed. 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.

On the other hand, the conventional prosthesis is provided to surround the lower end of the artificial tooth portion and the artificial tooth instead of the missing tooth and includes an artificial gum portion formed with a fastening hole for inserting and fastening the upper end of the abutment inside.

In this case, the prosthesis is substantially fixed to the oral cavity by the fastening between the abutment and the fixture, so that the artificial gum portion is formed with a minimum area to cover the fastening portion of the abutment and the fixture. do. Accordingly, even if foreign matter penetrates between the prosthesis and the gum, it can be hygienically managed using an interdental toothbrush or the like.

Here, the conventional prosthesis is mainly made of a synthetic resin material having a predetermined strength and easy molding. In addition, the abutment fixing the prosthesis, the fixture, and the fastening screw connecting the prosthesis are provided with titanium or titanium alloy material which is excellent in biological bone and bone fusion and has little toxicity in the human body.

Therefore, wear or fracture occurs in the fastening hole portion of the prosthesis made of a synthetic resin as a large charge is applied through a fastening means such as a drill in the process of installing the prosthesis. For this reason, there is a problem that the prosthesis is separated from the oral cavity or the installation position is deformed. Here, the charge weight means a tensile force applied to the fastening screw when the tightening force is applied, and means a tension force to be supported so as not to be released after the tightening is completed.

In order to solve this problem, some of the prosthesis made of a synthetic resin material used to fix the support cylinder made of metal after forming a through hole corresponding to the position of the fixture. At this time, the through hole is formed to have a large clearance in order to minimize the error, between the through hole and the outer circumference of the support cylinder is filled and cured by an adhesive resin.

However, since the tensile force applied when tightening the fastening screw and the extension direction of the support cylinder substantially correspond, there is a problem that the support cylinder is separated from the prosthesis when a large charge is applied.

Meanwhile, some techniques have been disclosed for insert injection of a metal frame having the fastening groove formed at the lower end of the prosthesis to support charge charge. However, there is a problem in that it is difficult to align the position of the frame at the time of insert injection, which makes it difficult to install the prosthesis at the correct position in the oral cavity.

For this reason, after installing the prosthesis, the occlusion reliability is lowered, and the upper and lower jaw do not properly engage during chewing, causing pain, such as causing inconvenience to the prosthetic user.

Korea Patent Registration No. 10-0403834

In order to solve the above problems, the present invention is to provide a digital prosthesis manufacturing method that is improved manufacturing convenience and precision as a problem.

In order to solve the above problems, the present invention is the scanning image and CT image of the target arch and the clavicle arch is aligned and matched based on the image information on the combined bytes for guiding the vertical height for each subject, the object and clam surface information and implantation A first step of generating a three-dimensional work image including information; A virtual temporary prosthesis in which the inner and outer surface parts correspond to the object and clam surface information and a virtual joining area corresponding to the joining part profile of the abutment implanted in the target archery is created in the 3D work image according to the implantation information. A second step of becoming; The temporary prosthesis manufactured in correspondence with the virtual temporary prosthesis is corrected so that the occlusal and inner portions are conformed to the target arch of the abutment implanted by the occlusal pressure between the target arch and the arch of the arch where the abutment is placed. A third step of obtaining a corrected scanning image for the provisional prosthesis; The virtual metal frame and the virtual metal frame in which the object and the clam surface information are replaced with the corrected scanning image, wherein an inner surface profile is set according to the corrected surface information of the inner surface of the corrected scanning image, and a virtual fastening hole is set corresponding to the corrected coupling region. A fourth step of generating a virtual artificial tooth whose height is set based on outer surface correction surface information of the correction scanning image; And a fifth step of manufacturing the final digital prosthesis by combining the virtual metal frame and the metal frame and the artificial tooth manufactured corresponding to the virtual artificial tooth.

Here, in the fourth step, the correction scanning image is set as the matching area portion on the inner surface side based on a boundary line selected and input along the outer side of the correction surface information of the inner surface portion, wherein the temporary prosthesis except for the matching region portion is provided. It is preferable that the correction surface information of E is erased so that the internal correction surface information including the coupling region is exposed, and the internal profile of the virtual metal frame is replaced with the exposed internal correction surface information.

In addition, in the fourth step, the virtual fastening hole may include a virtual coupling end which is integrally protruded radially inwardly from the inner circumference thereof and is matched with the engagement profile of the abutment under the virtual step. While pre-stored in the library, the virtual coupling end of the virtual fastening hole extracted from the digital library is virtually arranged to correspond to the three-dimensional surface information of the corrected coupling area, while the corrected three-dimensional surface information of the coupling area is erased. It is preferable to replace the virtual fastening hole.

In addition, in the fourth step, the inner surface of the virtual gum extension is virtually disposed to correspond to the inner surface correction surface information, and the virtual artificial tooth is virtually disposed to correspond to the outer surface correction surface information. The virtual support protrusions protruding corresponding to the virtual artificial teeth from each other is set, and the virtual metal frame is set to integrate the virtual gum extension and the virtual support protrusions, the shape and volume of the virtual support protrusions is It is preferable that the joining area and the support cross-sectional area of the virtual support groove formed on the inner side of the virtual artificial tooth corresponding to the outer surface of the virtual support protrusion are proportional to the chewing load for each position of the predetermined dental arch line.

In addition, in the third step, the correction scanning image is coated on the inner surface of the inner surface and the coupling region of the curable resin is installed on the target arch of the abutment implanted, the curable resin is pressed by the occlusal pressure Obtained by scanning the inner and outer surfaces of the corrected prosthetic prosthesis, including a corrected occlusal correction surface portion and an occlusal correction surface portion that is cut and corrected based on the indentation on the side of the antagonist arch formed by the occlusal pressure. This is preferable.

Meanwhile, in the fifth step, the metal frame is produced by three-dimensional printing of a frame base corresponding to the virtual metal frame with a high-temperature vaporization resin, and the frame base is embedded in a molding sand and vaporized by high temperature. A coating composition is formed that includes a cavity corresponding to the volume of the base, and a step of filling and hardening molten metal in the cavity and matching the color of the target arch in the gum corresponding region of the metal frame. It is preferable to further include the step of applying and curing to form a color layer.

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

First, as the part to which the fastening screw is fastened to be installed in the oral cavity is formed of a metal frame, it firmly supports the mastication pressure and the charge load and improves durability, thereby significantly extending the service life of the digital prosthesis. have.

Second, since the inner profile of the metal frame is directly installed in the oral cavity and is set based on an image obtained by scanning the temporary prosthesis corrected to correspond to the oral cavity, the inner and outer surfaces of the metal frame can further improve the oral cavity installation accuracy. Even if there is no temporary use of the temporary prosthesis can be significantly improved usability and convenience during the procedure.

Third, the temporary prosthesis is formed integrally with the coupling area where the temporary gum part, the temporary tooth part and the coupling part of the abutment are integrally eliminated, and the hassle of assembling a separate support cylinder is eliminated. Since it is installed in the oral cavity in the state where the curable resin is applied and precisely corrected, the position and shape of the stepped part integrally formed in the metal frame are precisely formed, so that the installation accuracy can be significantly improved.

Fourth, even if the metal frame is made of a metallic material to satisfy the required strength corresponding to the chewing and the occlusal pressure, the aesthetics of the metal frame is laminated through a series of painting processes to match the color of the gum portion of the target arch. Significantly improved high quality digital prostheses can be provided.

1 is a flow chart showing a digital prosthesis manufacturing method according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing a process in which the combined byte is corrected to correspond to the vertical diameter in the digital prosthetic manufacturing method according to an embodiment of the present invention.
3 is an exemplary view showing a design process of a temporary prosthesis in the digital prosthetic manufacturing method according to an embodiment of the present invention.
4 is an exemplary view showing a process of correcting a temporary prosthesis in the method of manufacturing a digital prosthesis according to an embodiment of the present invention.
5 is an exemplary view showing a process of obtaining a calibration scanning image in a digital prosthetic manufacturing method according to an embodiment of the present invention.
Figure 6 is an exemplary view showing the alignment process of the virtual fastening hole in the digital prosthetic manufacturing method according to an embodiment of the present invention.
7 is an exemplary view illustrating a design process of a metal frame and an artificial tooth in a method of manufacturing a digital prosthesis according to an embodiment of the present invention.
8 is an exemplary view as viewed from the top of the metal frame manufactured according to an embodiment of the present invention.
9 is an exemplary view of the metal frame manufactured according to an embodiment of the present invention as viewed from below.
10 is an exploded perspective view of a partially projected interior of a final digital prosthesis manufactured in accordance with one embodiment of the present invention;
Figure 11 is a cross-sectional view of the final digital prosthesis produced in accordance with an embodiment of the present invention.

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

On the other hand, the present invention will be described and illustrated by way of example the manufacturing process of the complete prosthesis is installed in the oral cavity at least one side of the maxillary or mandibular teeth or upper and lower jaw are all edentulous. Of course, the present invention can also be applied to the manufacturing process of the partial prosthesis which is installed in the partial periodontal jaw missing some teeth of the upper or lower jaw. At this time, the digital prosthesis manufactured according to the present invention can solve the problem that the soft tissue gums are deformed because the dentures that are conventionally fixed with an adhesive are directly supported by the gums. In other words, the digital prosthesis is fixed to the alveolar bone through implants such as fixtures and abutments to minimize deformation of the gum tissue and to minimize foreign objection caused by the flow of the device during occlusal or chewing, thus improving convenience of use. . In addition, since the portion of the abutment coupled to the fixture placed in the alveolar bone is directly fastened to the digital prosthesis, the portion is drawn with a metal frame, thereby firmly supporting the mastication pressure, thereby preventing fracture and damage even when used for a long time.

In detail, FIG. 1 is a flowchart illustrating a method of manufacturing a digital prosthesis according to an embodiment of the present invention.

As shown in Figure 1, the digital prosthetic manufacturing method according to a preferred embodiment of the present invention three-dimensional work image generation (s10), virtual temporary prosthesis generation (s20), temporary prosthetic correction and correction scanning image acquisition (s30), virtual It includes a series of steps such as metal frame and virtual artificial tooth generation (s40), and final digital prosthetic manufacturing through the manufacture and combination of metal frame and artificial teeth (s50).

The digital prosthetic manufacturing method is preferably performed through a digital prosthetic manufacturing system including a planning unit.

In detail, each image data such as a plurality of scanning images and CT images is obtained by using an imaging device such as an oral scanner or a computed tomography scanner, and transmitted to the planning unit. The 3D work image, which is final image data, is generated through an image processing process such that the plurality of scanning images and the CT images are aligned, overlapped, swapped, corrected, or aligned through the planning unit. In addition, the virtual metal frame and the artificial artificial teeth, which are design information of the digital prosthesis, are precisely matched to the mouth of the subject based on the generated 3D work image.

Here, the planning unit includes a storage unit for storing each image data, a processing unit for processing to generate the integrated scanning image and the three-dimensional working image, and the virtual metal frame and the virtual artificial tooth based on each image data. do. In addition, an input unit for inputting information and control commands to the processing unit, input information and control commands, and generated image data such as each image data and the three-dimensional working image, the virtual metal frame, and the virtual artificial tooth are output. The output unit is included.

In addition, the planning unit may further include a communication unit capable of receiving each image data or transmitting each image data or generated data to an external device. That is, each image data obtained using the imaging device is transmitted to the planning unit through the communication unit, and each image data or generated data is transmitted to the external device through the communication unit. In this case, the external device is preferably understood as a manufacturing apparatus capable of manufacturing a real metal frame and an artificial tooth corresponding to the virtual metal frame and the virtual artificial tooth, such as a three-dimensional printer or a mill.

On the other hand, Figure 2 is a cross-sectional view illustrating a process of correcting the coupling byte to correspond to the vertical diameter in the digital prosthetic manufacturing method according to an embodiment of the present invention, Figure 3 is a digital prosthesis manufacturing according to an embodiment of the present invention It is an exemplary view showing the design process of the temporary prosthesis in the method. And, Figure 4 is an exemplary view showing a correction process of the temporary prosthesis in the digital prosthetic manufacturing method according to an embodiment of the present invention, Figure 5 is the acquisition of the correction scanning image in the digital prosthetic manufacturing method according to an embodiment of the present invention An illustration showing the process. And, Figure 6 is an exemplary view showing the alignment process of the virtual fastening hole in the digital prosthetic manufacturing method according to an embodiment of the present invention, Figure 7 is a metal frame and artificial in the digital prosthetic manufacturing method according to an embodiment of the present invention An illustration showing the design process of a tooth.

As shown in Figures 2 to 7, the digital prosthesis according to the present invention is manufactured through a series of steps as follows.

In detail, the scanning image and the CT image of the target arch and the clavicle arch are aligned and matched based on the image information on the combined bytes for guiding the vertical height for each operator, thereby generating a three-dimensional working image 1d. Here, the target archery means that the digital dental prosthesis is substantially installed, and the opposition arch is preferably understood to mean the tooth associated with the target arch. Hereinafter, the target archery is a mandible and the clavicle arch is described and illustrated by way of example.

At this time, the three-dimensional working image 1d is imaged with the target surface information 2d corresponding to the outer surface profile of the target archery side and the cladding surface information 3d corresponding to the outer surface profile of the clavicle arch side in three dimensions. Is displayed. In addition, the digital prosthesis includes implant placement information such as fixtures and abutments that are implanted to be fixed to the alveolar bone.

Here, referring to FIG. 2, the coupling bite 210 engages with one surface portion 211 corresponding to the outer surface of the gum portion g of the target archery 2 and an end portion of the clam arch 3. It is preferred to include the portion 212. At this time, the coupling byte 210 is preferably provided with a thickness corresponding to the vertical height (VD) for each operator to the interval between the corrected one surface portion 211r and the other surface portion 212r corrected. Here, it is preferable that the vertical height of each subject is understood as the interval between the upper and lower jaws which can be occluded in a suitable and comfortable state during the occlusion. That is, the coupling byte 210 is preferably understood as a tool that is coupled so that the target archery 2 and the clavicle arch 3 correspond to the vertical diameter VD. Therefore, in the state where the target archery 2 and the clavicle arch 3 are engaged by the coupling bite 210, each image data considering the vertical height VD may be obtained.

In this case, the vertical height corresponding to each subject means that the distance between one surface portion and the other surface portion of the coupling bite 210 is manufactured to correspond to the vertical height for each subject, and the target archery (2) and the clav arch It is preferable to understand that the coupling bite 210 is installed between (3) but is corrected to correspond to the vertical height of each subject by the occlusal pressure. Hereinafter, the coupling bite 210 is provided in a standardized size, but the space between the one surface portion and the other surface portion is installed between the target archery 2 and the opposition arch 3 by the occlusal pressure. The corresponding correction is described and illustrated by way of example.

In addition, referring to FIG. 3, the plurality of scanning images may include a first scanning image of the outer surface of the target archery, a second scanning image of the outer surface of the clavicle arch, and image information of the combined byte. It can include three scanning images. In other words, the target surface information 2d is obtained from the first scanning image, and the cladding surface information 3d is obtained from the second scanning image. In this case, it is preferable that the image information about the combined byte encompasses information obtained by scanning the combined byte, and information obtained by scanning the target arch and the opposing arch formed by the combined byte. .

Meanwhile, a coincidence ratio between the image units of each of the predetermined comparison areas of the first scanning image and the second scanning image and the corresponding area of the third scanning image is calculated. In this case, when the matching ratio is equal to or greater than a preset value, each comparison area of the first scanning image and the second scanning image is aligned and disposed in a corresponding area of the third scanning image. Through this, the target surface information 2d and the clambling surface information 3d are included in the three-dimensional working image 1d in a state in which they are arranged to correspond to the vertical height.

In addition, the CT image may be obtained by directly photographing the oral cavity in a state where the coupling bite is combined to correspond to the vertical height using a computed tomography machine. Through this, the CT image includes 3D data of the alveolar bone on the side of the target arch, except for soft tissues such as lips, cheek mucous membranes and gums, through which radiation is low due to low density. In addition, when a antagonist value remains on the antagonist arch side, the CT image may include antagonist three-dimensional data spaced apart from the target archery side and the vertical diameter by the coupling byte.

On the other hand, when the implant is not implanted in the target archery, the implantation information may be set in accordance with the target alveolar side alveolar bone thickness / density and the arrangement of the clam teeth to be displayed in the three-dimensional working image (1d). The virtual fixture and the virtual abutment may be virtually arranged in the 3D work image 1d to correspond to the extraction and the implantation information from the digital library included in the planning unit. In addition, when the implant is not implanted in the target archery, a surgical guide for guiding the implantation based on the 3D work image 1d is further designed and manufactured through the manufacturing apparatus. The surgical guide may be installed in the target archery to guide the implantation position, direction, and angle of the implant so that the implant may be implanted in response to the implantation information.

Alternatively, when the implant is pre-established in the target archery, the implantation information may be set to correspond to the abutment coupling part profile that protrudes outward from the gum portion of the target archery and is displayed on the scanning image and the CT image. Can be. That is, when the implant is pre-established in the target archery, target surface information 2d in which the abutment coupling part profile protrudes outward from the gum part may be displayed in the first scanning image in three dimensions. Can be.

Hereinafter, the abutment coupling part profile 9d displayed on the three-dimensional work image 1d includes the surface information scanned for the abutment coupling part pre-established in the target archery and the virtual abutment. It is preferable to understand.

In detail, referring to FIG. 3, the three-dimensional work image 1d is spaced apart corresponding to the target surface information 2d on which the abutment coupling part profile 9d is displayed and the vertical height VD. The clamding surface information 3d is imaged and displayed in three dimensions. In addition, when the implant is not implanted in the target archery side, the alveolar bone 3D data of the target archery side is displayed to match the target surface information.

In addition, a virtual temporary prosthesis 14d which is design information of the temporary prosthesis is generated in the three-dimensional work image 1d including the target surface information 2d, the cladding surface information 3d, and the insertion information. Here, the temporary prosthesis is a prosthesis manufactured primarily to obtain precise design information about the digital prosthesis that is finally manufactured, and the digital prosthesis is preferably understood as a final dental restoration for practical use by the subject. In addition, the temporary prosthesis may not only provide design information of the digital prosthesis, but may also be temporarily used by the operator during the manufacturing period of the digital prosthesis, thereby improving usability and convenience in the dental restoration process.

In detail, the virtual temporary prosthesis 14d is generated in the three-dimensional working image 1d, and the virtual occlusal surface portion corresponding to the occlusal value remaining on the antagonist arch side on the outer surface of the virtual temporary prosthesis 14d ( 18d) is preferably set. The virtual occlusal surface portion 18d may be set based on the arrangement of the antagonist teeth and three-dimensional mastication surface information so as to stably mate with the antagonist teeth.

In addition, it is preferable that the virtual fitting groove 17d is set in the inner surface portion of the virtual temporary prosthesis 14d to be matched with the target surface information 2d. The virtual matching groove 17d may be set based on the target surface information 2d to be substantially matched with the target archery.

At this time, the abutment coupling part profile 9d corresponding to the implantation information is protruded and displayed on the target surface information 2d. Accordingly, it is preferable that one side end of the virtual mating groove 17d corresponds to the abutment coupling part profile 9d, but the virtual mating area 19d extending toward the virtual occlusal surface 18d is displayed. . Here, the virtual coupling region 19d may be set to a hollow shape corresponding to the outer diameter of the actual support cylinder for coupling with the abutment pre-established in the target archery. Alternatively, an end portion of the virtual coupling region 19d may be set to have a shape corresponding to the abutment coupling profile 9d.

3 and 4, the temporary temporary prosthesis 14 of the real body is manufactured based on the virtual temporary prosthesis 14d including the virtual occlusal surface portion 18d and the virtual mating groove 17d. In this case, the temporary prosthesis 14 is preferably integrally formed including a temporary gum part including a mating groove 17 including a coupling region 19 and a temporary tooth part including an occlusal surface 18.

The temporary prosthesis 14 may be applied in the oral cavity and is formed of a synthetic resin material that can be cut using a cutting tool while having a predetermined strength to minimize deformation during mastication. Therefore, it is easy to manufacture by three-dimensional printing or three-dimensional milling process based on the virtual temporary prosthesis 14d, and in the process of correction of the temporary prosthesis 14 to be described later and the combined portion of the oral cavity and abutment (9) Cutting correction can be made to maximize the matching / occlusal accuracy of

Furthermore, the temporary prosthesis 14 is manufactured integrally with the outer surface portion on which the occlusal surface portion 18 is formed and the inner surface portion on which the mating groove 17 including the coupling region 19 is formed. Can be. In addition, since the virtual temporary prosthesis 14d, which is the design information of the temporary prosthesis 14, is set based on a scanning image obtained by directly scanning the oral cavity, the design of the temporary prosthesis 14d may be easily improved, and the matching with the oral cavity may be significantly improved. . Furthermore, the accuracy and precision of the digital prosthesis designed and manufactured based on the temporary prosthesis 14 corrected as the temporary prosthesis 14 including the coupling region 19 is actually installed and corrected in the oral cavity is significantly improved. Can be.

Meanwhile, referring to FIGS. 4 to 5, the temporary prosthesis 14 includes a target arch 2 in which the fixture f and the abutment 9 are placed, and the clasping arch 3, which is combined with the target arch. It is preferable to install in between. At this time, the fitting groove 17, which is the inner surface side of the temporary prosthesis 14, is corrected to fit the target arch 2 in which the abutment 9 is placed by the mating pressure. In addition, the occlusal surface portion 18, which is the outer surface portion side of the temporary prosthesis 14, is corrected to correspond to the end portion of the clam value by the occlusal pressure.

The temporary prosthesis 14 is scanned by the mating groove 17 and the occlusal surface portion 18 by the occlusal pressure, and the temporary prosthesis 14 is corrected to match the target arch 2 and the clam 3. It is preferable that the correction scanning image 1f for 14 is obtained. That is, even if an error or shrinkage occurs in the process of manufacturing the temporary prosthesis 14 based on the virtual temporary prosthesis formed based on the three-dimensional working image 1d, the target archery 2 ) And the clam arch 3 can be precisely corrected.

In this case, the temporary prosthesis 14 is installed in the target archery 2 in which the abutment 9 is placed in a state in which a curable resin is applied to one side of the fitting groove 17 and the coupling region 19. do. When the curable resin is pressurized by the occlusal pressure, the gap between the mold groove and the surface of the target arch 2 or the inner surface of the coupling region 19 and the abutment 9 are coupled to each other. As the gap portion between the portions is filled with the curable resin, the inner surface profile of the temporary prosthesis 14 is corrected. In addition, an inner surface side of the temporary prosthesis 14, that is, the matching groove 17 may be corrected, including a matching correction surface portion r11 formed as the curable resin is cured and fixed.

In addition, the occlusal surface portion 18 is adjusted to include an occlusal correction surface portion r12 so as to be cut based on the indentation of the opposing arch 3 side formed by the occlusal pressure and optimized according to the chewing sensitivity of the subject. Can be. Furthermore, as the curable resin is further laminated to the outside of the occlusal surface portion 18, the area of the occlusal correction surface portion r12 may be increased. Accordingly, the height and the mastication surface of the artificial tooth set based on the outer surface side of the temporary prosthesis 14 including the occlusal correction surface portion r12, that is, the occlusal surface portion 18 can be formed more precisely and accurately. have.

Meanwhile, referring to FIGS. 5 to 7, the correction scanning image 1f is preferably obtained by scanning the inner and outer surface portions of the temporary prosthesis corrected including the registration correction surface portion and the occlusal correction surface portion. In addition, the target surface information 2d and the opposing surface information 3d included in the three-dimensional working image 1d may be replaced with the corrected scanning image 1f. In this case, it is preferable to indicate that 1e in FIG. 7 refers to the three-dimensional working image 1e in which the target surface information 2d is replaced with the corrected scanning image 1f. Subsequently, the virtual metal frame 320d, which is design information of the metal frame, and the virtual artificial tooth 310d, which is design information of the artificial tooth, are generated based on the corrected scanning image 1f.

In detail, the virtual metal frame 320d may have an inner surface profile set according to the inner surface correction surface information 17f of the correction scanning image 1f. Here, the inner surface correction surface information 17f is preferably understood as surface information of the matching groove corrected including the matching surface. Further, it is preferable that the inner surface correction surface information 17f includes surface information 19f of the coupling region corrected including the matching correction surface portion. Through this, the inner surface profile of the virtual metal frame 320d may be set to substantially match the overall surface profile of the target archery in which the abutment is placed.

At this time, it is preferable that the virtual fastening hole 20d is set corresponding to the coupling area 19f corrected by the occlusal pressure in the state where the temporary prosthesis is installed in the oral cavity. That is, as the coupling region formed integrally with the temporary prosthesis is actually fastened to the oral cavity, and the gap is complemented by the curable resin, the position of the coupling region is actually located at the coupling portion of the abutment implanted in the oral cavity. Can be corrected accordingly. In addition, the corrected scanning image 1f obtained by scanning the corrected prosthesis corrected as described above may display the corrected surface information 19f of the combined region as a 3D image. Accordingly, as the virtual fastening hole 20d is set to correspond to the surface information 19f of the coupling region, that is, the corrected coupling region, included in the correction scanning image 1f, the virtual metal frame 320d is configured to be connected to the virtual metal frame 320d. The abutment can be set to be more precisely installed in the target archery placed.

The virtual artificial tooth 310d may have a height set based on outer surface correction surface information of the correction scanning image 1f. Here, the outer surface correction surface information is preferably understood as surface information of the occlusal surface portion corrected including the occlusal correction surface portion. Through this, the virtual artificial tooth 310d may be set to correspond to the vertical diameter VD, but may be designed to substantially engage with the antagonist.

Meanwhile, referring to FIG. 5, in the step in which the target surface information and the clamshell surface information are replaced with the corrected scanning image 1f, the corrected scanning image 1f has an outer surface of the corrected surface information 17f. It is preferred to be calibrated to expose

In detail, the correction scanning image 1f displays correction surface information of the temporary prosthesis as a three-dimensional image. In this case, the correction surface information of the temporary prosthesis is preferably understood as image information corresponding to the entire inner and outer surfaces of the temporary prosthesis corrected to correspond to the oral cavity. Therefore, the correction surface information of the temporary prosthesis includes the internal correction surface information 17f and the external correction surface information.

In this case, the correction surface information of the temporary prosthesis is correction surface information of the temporary tooth portion whose surface is substantially convexly displayed upward and a correction surface of the outer surface portion of the temporary gum portion that is convexly displayed while covering the lower end of the temporary tooth portion. Contains information. In addition, the inner surface correction surface information 17f is concavely displayed inside the outer surface portion of the temporary gum portion, and the corrected surface information 19f of the coupling region is applied to the temporary tooth portion and the outer surface portion of the temporary gum portion. It is disposed in the three-dimensional working image in a state of being covered by the correction surface information.

Here, it is preferable that the boundary line x is selected and input along the outer side of the correction surface information 17f of the correction scanning image 1f. In this case, the outer side of the inner surface correction surface information 17f is a line spaced at predetermined intervals outside the edge where the fitting groove including the corrected surface information 19f of the coupling region is recessed. It is desirable to understand. The inner surface side is set to the matching area portion m based on the boundary line x, and the correction surface information of the temporary prosthesis except for the matching area portion m is set to the erasing area d. It is preferred to be erased. Here, the erasing is preferably understood to encompass the deletion of the selected image or data in the overall image data and the invisibility of the transparent image.

At this time, since the correction surface information of the temporary prosthesis is stored as surface information having substantially no thickness, the coordinate value of the inner surface side profile and the coordinate value of the outer surface side profile of the matching area portion m are substantially the same. Therefore, the internal design information of the metal frame is precisely obtained based on the internal correction surface information 17f exposed by the erased area d, and the corrected surface information 19f of the combined area is corrected. Correspondingly, the design information of the fastening hole can be obtained accurately.

Accordingly, the inner surface correction surface information 17f including the corrected surface information 19f of the coupling region may be corrected to be convexly exposed to the opposing surface information side. In addition, the inner profile of the virtual metal frame is preferably generated by replacing the exposed inner surface correction surface information 17f as described above. Through this, installation conformity with the target archery in which the abutment is implanted in a state in which the real metal frame manufactured corresponding to the virtual metal frame is installed in the oral cavity may be significantly improved.

That is, the present invention is a simple method of erasing unnecessary parts from the image obtained by scanning the temporary prosthesis corrected to accurately occlusion and registration in the oral cavity, the three-dimensional surface information about the registration groove, the coupling area and the occlusal surface of the digital prosthesis. Is obtained. Accordingly, since the design information of the digital prosthesis precisely corresponding to the target archery and the clavicle arch where the abutment is placed is obtained by being clearly exposed, the precision of the digital prosthesis 300 may be significantly improved.

In addition, since the inner surface profile of the temporary prosthesis is reflected as the design information of the metal frame instead of the actual oral fluid having a large amount of soft tissues, the accuracy of the image information may be significantly improved. At this time, since the inner profile of the temporary prosthesis is corrected to be more precisely matched with the actual oral cavity, the design information of the metal frame can be obtained more precisely.

Meanwhile, referring to FIG. 6, the virtual fastening hole 20d has a virtual stepped portion 21d integrally protruding radially inward from the inner circumference thereof, and has been corrected to the lower side of the virtual stepped portion 21d. It is preferably set to three-dimensional image information including the virtual coupling end 22d matching the information 19f. The virtual fastening hole 20d is pre-stored in a digital library included in the planning unit, and selected and extracted from the digital library corresponding to the insertion information and virtually disposed in the 3D work image 1d.

At this time, the virtual fastening hole 20d extracted from the digital library is virtually disposed with the coupling area surface information 19f in which the virtual coupling end 22d formed at one end thereof is corrected. In addition, it is preferable that the corrected coupling area surface information 19f is replaced with the virtual fastening hole 20d. Accordingly, even when the joint area surface information 19f corrected by the needle, the foreign matter, or the distortion or the image generated during the scanning process is displayed unclearly, the virtual fastening hole 20d may be clearly displayed as the virtual fastening hole 20d. have. In this case, since the virtual fastening hole 20d is digital data corresponding to the abutment substantially placed in the target archery, the fastening hole formed in the metal frame may be set to substantially match the abutment.

On the other hand, referring to Figure 7, the virtual metal frame 320d is preferably set as follows. In detail, a virtual artificial tooth 310d suitable for the mouth of the subject from the digital library is extracted and virtually disposed in the three-dimensional working image 1e. In this case, the virtual artificial tooth 310d is provided with a plurality of virtual tooth models arranged in correspondence with a predetermined dental arch line and provided in one set, and a plurality of virtual tooth models correspond to various age and gender dental arch lines in the digital library. Can be stored.

In addition, one virtual artificial tooth 310d selected and extracted according to a selection item corresponding to the oral environment of the subject is virtually disposed in the 3D work image 1e, and is sized in consideration of the occlusal relationship with the antagonist. , Position and angle can be adjusted. In addition, the height of the virtual artificial tooth 310d is preferably set in correspondence with the opposing surface information 3d or the outer surface correction surface information.

The virtual gum extension 321d may be virtually disposed to completely surround the lower end of the virtual artificial tooth 310d, that is, the root side. At this time, the inner surface of the virtual gum extension part 321d is virtually disposed to correspond to the inner surface correction surface information. Through this, the inner surface of the virtual metal frame 320d corresponding to the inner surface of the virtual gum extension 321d may be set to be precisely installed in the target arch of the abutment.

The virtual support protrusion 322d protruding from the virtual gum extension part 321d to correspond to the virtual artificial tooth 310d is preferably set. In this case, the virtual metal frame 320d is preferably set by integrating the virtual gum extension 321d and the virtual support protrusion 322d. In addition, the virtual artificial tooth 310d is preferably set to the virtual support groove portion corresponding to the outer surface of each of the virtual support protrusion 322d. That is, the virtual support protrusion 322d is set in a protrusion shape in which a lower end overlaps with the virtual gum extension 321d and protrudes outwards, and the virtual support groove is an outer surface profile of the virtual support protrusion 322d. Is set in the shape of a groove corresponding to.

At this time, the shape and volume of the virtual support protrusion 322d is a joining area and a support cross-sectional area with respect to the virtual support groove formed on the inner side of the virtual artificial tooth 310d corresponding to the outer surface of the virtual support protrusion 322d. It is preferably set to be proportional to the chewing load for each position of the predetermined dental arch line.

In detail, the outer profile of the virtual support protrusion 322d may have the same cross-sectional area of the lower and upper portions extending from the virtual gum extension 321d, or may have a narrow upper portion and a wider lower portion. In addition, the virtual support protrusion (322d) is the upper end is flat so that the load is stably supported during the mastication, it is preferable that the support cross-sectional area and height in the mastication direction is formed to correspond to the support cross-sectional area and height of the virtual artificial tooth (310d). . More preferably, the virtual support protrusion 322d may be embedded in the virtual artificial tooth 310d, and the virtual support groove may be set to be matched with an outer profile of the virtual support protrusion 322d. . The virtual support protrusion 322d is stretched and adjusted to correspond to the volume of each tooth model of the virtual artificial tooth 310d, but there is a gap between the external profile of the virtual support protrusion 322d from the external profile of each tooth model. It is desirable to be adjusted to match the set minimum support thickness.

In detail, the minimum support thickness may be preset according to the material strength of the artificial tooth such that the artificial tooth having the support groove therein is not broken by the chewing pressure. Accordingly, the virtual support protrusion 322d may be set such that the support protrusion of the real body is formed to the maximum size within the limit without the risk of fracture upon coupling to the shape and volume of the artificial tooth. In this case, the shape and volume of the artificial tooth are proportional to the shape and volume of the actual artificial tooth manufactured based on the virtual artificial tooth 310d within an appropriate error range. It is desirable to understand.

Thus, a plurality of the support protrusions may be provided to correspond to the shape and volume of the artificial tooth corresponding to each of the missing teeth to provide a joint area proportional to the chewing load. In addition, since the chewing load is applied to each portion of the gum extension part in a distribution similar to that of the actual tooth according to the deviation of the support cross section of each support protrusion, the unity is maximized and the durability and satisfaction of wearing can be remarkably improved.

On the other hand, the virtual fastening hole 20d is preferably disposed to pass through the virtual gum extension portion 321d and the virtual support protrusion 322d in response to the implantation information. At this time, the virtual stepped portion and the virtual coupling end is set to be located inside the virtual support protrusion 322d, the virtual artificial tooth 310d is a virtual communication hole communicated with the upper side of the virtual fastening hole (20d) This is preferably set.

In detail, the virtual coupling end is formed in a shape that is formed corresponding to the abutment coupling profile as described above. In addition, the virtual stepped portion is formed with a diameter smaller than the outer circumference of the head portion of the fastening screw, the inner circumference exceeds the outer circumference of the coupling screw portion of the fastening screw fastened to the actual abutment. In addition, the virtual fastening hole 20d connected to the upper side of the virtual communication hole and the virtual stepped portion is preferably formed to exceed the outer peripheral diameter of the head portion of the fastening screw.

In this case, the virtual artificial tooth 310d, the virtual gum extension 321d, the virtual support protrusion 322d and the virtual fastening hole 20d may be set as solid three-dimensional area information. The virtual artificial teeth 310d and the virtual metal frame 320d may be set as the solid region information overlaps with each other in a predetermined position and is erased in correspondence with each other or corresponding region information. . For example, in the virtual artificial tooth 310d, the virtual support groove portion and the virtual communication hole may be set inward as three-dimensional area information corresponding to the virtual support protrusion 322d and the virtual fastening hole 20d is erased. Can be. In addition, the virtual metal frame 320d is connected to the virtual gum extension part 321d and the virtual support protrusion 322d integrally, and the three-dimensional area information corresponding to the virtual fastening hole 20d is erased. The virtual stepped portion and the virtual coupling end portion may be formed inside the virtual support protrusion 322d.

Alternatively, the virtual artificial tooth 310d, the virtual gum extension 321d, the virtual support protrusion 322d, and the virtual fastening hole 20d may be set to three-dimensional surface information having a hollow inside. Each of the three-dimensional surface information may overlap each other at a predetermined position, and the virtual artificial tooth 310d and the virtual metal frame 320d may be set to correspond to surface information intersecting with each other.

On the other hand, Figure 8 is an exemplary view as viewed from the top of the metal frame manufactured according to an embodiment of the present invention, Figure 9 is an exemplary view as viewed from the bottom of the metal frame manufactured according to an embodiment of the present invention. And, Figure 10 is an exploded perspective view of the inside of the final digital prosthesis manufactured in accordance with an embodiment of the present invention, Figure 11 is a cross-sectional view of the final digital prosthesis produced in accordance with an embodiment of the present invention.

As shown in FIGS. 8 to 11, the metal frame 320 and the artificial tooth 310 are manufactured to correspond to the virtual metal frame and the virtual artificial tooth set through the above steps. In addition, the metal frame 320 and the artificial tooth 310 is preferably combined to produce a final digital prosthesis 300.

In detail, the artificial tooth 310 may be manufactured by three-dimensional printing or three-dimensional milling with synthetic resin or zirconium so that the shape and strength of the artificial tooth 310 are similar. At this time, the artificial tooth 310 is preferably formed integrally so that the crown corresponding to each missing tooth corresponds to a predetermined dental arch line, and in some cases the crown corresponding to each missing tooth is manufactured separately and the metal frame ( And 320).

Here, the outer surface of the artificial tooth 310 may be formed corresponding to the outer surface correction surface information to improve the occlusal arch and the occlusal reliability, it is preferable that a plurality of support grooves 311 is formed on the inner surface side. At this time, the communication hole 312 is formed in at least two or more (preferably four) of the plurality of support grooves 311.

In addition, the metal frame 320 is preferably made of a metal material to secure the strength against external pressure when fastening to the target arch. Here, the external pressure is preferably understood as the mastication pressure applied during the chewing and the charges applied during the fastening of the fastening screw. Through this, the support strength and durability of the digital prosthesis 300 may be improved, and thus the service life may be significantly increased.

In detail, the metal frame 320 includes the gum extension part 321 corresponding to the area of the lower end of the artificial tooth 310 and the support protrusion part 322 integrally extended from the gum extension part 321. . At this time, the inner surface of the gum extension part 321 is set to correspond to the outer surface of the target arch, and the coupling end portion 324a corresponding to the three-dimensional shape of the virtual coupling end portion is formed at a position corresponding to the implantation information. desirable.

In this case, the coupling end portion 324a is set based on the virtual fastening hole corresponding to the abutment coupling portion profile, the temporary prosthesis corrected in the inner and outer surface profiles while being installed in the target archery in which the abutment is placed. The position is precisely formed based on the surface information of. Therefore, the oral installation accuracy of the digital prosthesis 300 may be significantly improved.

The stepped portion 324b is formed above the coupling end portion 324a. In this case, the stepped portion 324b to which the charge weight of the fastening screw is applied is formed substantially integrally with the metal frame 320. Therefore, the conventional cylinder is fixed to the fastening hole is fixed to the conventional hole, such as the position is deformed or separated by the charge applied during the fastening of the fastening screw can be fundamentally solved. Through this, since the installation position is fixed so that the digital prosthesis 300 is stably interlocked with the clavicle arch, the authoring reliability can be remarkably improved. In addition, the fastening screw can be easily fastened as the fastening hole 324 communicating with the communication hole 312 is formed above the stepped part 324b.

As described above, when the artificial tooth 310 and the metal frame 320 are manufactured, the digital prosthesis may be formed by applying and bonding the adhesive between the inner surface of the support groove 311 and the outer surface of the support protrusion 322. 300) can be made final.

At this time, the metal frame 320 is preferably manufactured including a series of steps.

In detail, the frame base corresponding to the three-dimensional outline information of the virtual metal frame is three-dimensional printed with a high temperature vaporizable resin material. The frame base may be manufactured by three-dimensional cutting a solid high temperature vaporizable resin block to correspond to three-dimensional surface information of the virtual metal frame. Alternatively, the slicing image, which is cured by scanning light energy such as a laser or ultraviolet ray, may be drawn into a tank filled with a liquid high temperature vaporizable resin, and may be drafted by a light shaping method of fabricating a three-dimensional pattern structure while attaching several tens to thousands of layers.

Then, a mold is prepared in which the frame base is embedded in the foundry sand and vaporized by high temperature, and a cavity corresponding to the volume of the frame base is formed. In addition, the metal frame 320 may be manufactured by filling and curing a molten metal in the cavity through a molten metal injection part. The molten metal is preferably provided with a metal material such as titanium or titanium alloy that is not toxic to the human body so that it can be applied in the oral cavity.

In addition, the frame base is preferably provided with a high temperature vaporizable resin material such as polystyrene (polystyrene). Accordingly, the metal frame 320 may be more precisely manufactured since the frame base is vaporized by the high temperature transmitted from the outside of the foundry sand, and thus no residue remains on the inner surface of the cavity. Of course, the high-temperature vaporizable resin material may be provided with a variety of high-temperature vaporizable synthetic resin materials used for manufacturing a model during known investment casting.

In addition, the present invention further comprises the step of forming a coloring layer (p2) through a series of painting processes so that the metal frame 320 made of a metallic material is matched with the actual periodontal tissue, ie, the color of the target arch of the gum. It is preferable to include.

In detail, referring to FIG. 10, a first coating liquid for shielding the surface of the metal frame 320, preferably the surface color of the corresponding area of the gum part, is coated and dried on the surface of the metal frame 320 to form a primer layer ( p1). In this case, the gum corresponding region of the metal frame 320 may be understood as a surface excluding the inner surface of the fastening hole 324 and the outer surface of the support protrusion 322.

Here, the first coating solution is provided in a liquid or colloidal state containing an acrylic resin material and zirconium oxide, and the surface of the metal frame 320 is laminated and applied one to three times, and creadent lig. Can be used.

The first coat solution is applied to substantially shield the surface color of the metal frame 320 so that the color of the color layer p2 described later is clearly displayed. In addition, the first coating liquid includes an acrylic resin included in the color developing layer p2 and a resin of the same material, so that the color developing layer p2 is formed on the primer layer p1 through high adhesion between the same materials. It can be tightly applied and hardened firmly.

In addition, a coating composition including a base resin, a pigment of a predetermined color, and a dispersant is coated and cured on the surface of the primer layer p1 to form the color layer p2 that matches the color of the target archery 2. do. Here, it is preferable that the coating composition includes a photoinitiator activated in the ultraviolet region so that the coating composition is cured quickly after being applied to the surface of the primer layer p1.

In detail, the present invention is a step in which the coating composition is mixed with the photoinitiator activated in the ultraviolet region is applied to the surface of the primer layer (p1), and cured through an ultraviolet light filler to form the color layer (p2) It may include. As a result, as the coating composition applied to the surface of the primer layer p1 is rapidly cured, staining due to flowing down of the coating composition may be prevented, and a series of painting processes may be rapidly performed to perform the digital Manufacturing period of the prosthesis 300 can be significantly shortened.

Here, the coating composition is 1.85 ~ 2.05% by weight of the photoinitiator, the coloring layer (p2) 0.027 ~ 0.038% by weight of white inorganic pigments, yellow organic pigments 0.002 ~ 0.004 weight so as to match the color of the target archery (2) %, And 0.003% to 0.007% by weight of the red organic pigment, and 0.007% to 0.015% by weight of the dispersant and the balance of the base resin, which are included to uniformly mix the pigment.

In detail, the photoinitiator may be used by mixing Irgacure 819, Irgacure 1173 of Ciba company in the commercially available products, the Irgacure 819 and the Irgacure 1173 may be mixed in a ratio of 1: 0.8 to 1.2% by weight. Here, in the case of Irgacure 819, it is advantageous to express the color of white or pastel tones, and Irgacure 1173 can improve the ease of use in the liquid phase and minimize the yellowing so that excellent color can be provided.

Such a photoinitiator is included to rapidly cure the coloring layer (p2) in the ultraviolet region, when less than 1.85% by weight relative to the total weight of the coating composition, the crosslinking density of the base resin is lowered, the mechanical properties of the coloring layer (p2) Is lowered. On the other hand, when the photoinitiator exceeds 2.05% by weight relative to the total weight of the coating composition, the crosslinking density is increased, so that the coloring layer (p2) may be firmly formed, but the appearance or aesthetic appearance is caused by lifting or distortion due to shrinkage. This can be degraded.

In addition, as the Irgacure 819 or Irgacure 1173 is used in combination than when used alone, the photo-curing efficiency and the color expression efficiency of the coloring layer (p2) are improved. Can be improved.

Of course, in some cases, the photoinitiator may be changed to include a photoinitiator of the visible ray strengthening series or the IR strengthening series according to the type of the photopolymerizer.

On the other hand, the pigment may be mixed with the white inorganic pigment, the yellow organic pigment and the red organic pigment in the above-described range so that the color is similar to the target archery (2). Such a mixing ratio may vary depending on the surface color of the target archery 2, and may be applied to have a variety of mixing ratios of colors so as to improve the similarity with the target archery 2 and to be gradient-treated.

In addition, the dispersant may be included so that the pigment is uniformly mixed in the coating composition, BYK-disper 118 of the commercially available product can be used. Here, when the dispersant is mixed, when the coating composition is applied to the surface of the primer layer p1, the lowering and spreadability of the surface tension may be improved, and thus the coating composition may be applied with a uniform thickness.

In this case, when the dispersant is included in an amount less than 0.007% by weight or more than 0.015% by weight based on the total weight of the coating composition, the dispersibility between the mixture may be lowered and staining may occur on the color layer p2.

In addition, the base resin may be provided in a mixed form of an acrylic oligomer and an acrylic monomer, and is not limited thereto as long as the base resin is the same as the resin material included in the first coating liquid. For example, the base resin may include an oligomer and isobornyl selected from the group consisting of urethane dimethacrylate (UDMA), ethoxylated 30 bisphenol A dimethacrylate (EBADMA), and mixtures thereof. It may include a monomer including an acrylate (isobonyl acrylate, IBOA).

At this time, the UDMA is contained in 68.000 ~ 78.000% by weight relative to the total weight of the coating composition, the EBMDMA is included in the 3.000 ~ 8.000% by weight relative to the total weight of the coating composition, the IBOA is the coating composition It may be included as 17.000 to 23.000% by weight relative to the total weight of.

In addition, 0.1 to 10 parts by weight of the inorganic filler is further included on the basis of 100 parts by weight of the coating composition in order to prevent shrinkage of the coloring layer (p2) during the photopolymerization through the ultraviolet light polymerizer. At this time, the inorganic filler preferably includes one selected from the group consisting of titanium oxide, zinc oxide and mixtures thereof.

Such an inorganic filler prevents shrinkage during crosslinking of the coloring layer (p2) while the fusion fixing with the primer layer (p1) is carried out through crosslinking of the oligomer and monomer included in the coating composition, thereby significantly reducing the dimensional precision. Can be improved.

In this case, the coating composition may be applied by laminating 1-3 times on the surface of the primer layer (p1), and the curing time through the ultraviolet photopolymerizer may take 1 to 5 minutes for each coating.

On the other hand, a second coating liquid for reinforcing the surface of the color layer p2 is applied and dried to form a surface coating layer p3.

In detail, the second coating solution may be GC's Optiglaze commercially available product is applied to the surface of the color development layer (p2). The second coating liquid may give gloss to the surface of the metal frame 320 to which the coloring layer p2 is applied, thereby improving aesthetic satisfaction. In addition, the service life of the digital prosthesis 300 may be significantly extended by preventing deterioration due to abrasion, scratching, peeling, breakage of the coloring layer p2, and the like.

Furthermore, the method may further include a step of pretreating the surface treatment agent so that the adhesive force of the primer layer p1 is conserved. That is, as the surface treating agent forms a fine concavo-convex surface on the surface of the metal frame 320, adhesion and adhesion may be further improved while increasing the area to which the primer layer p1 is applied. Through this, the metal frame 320 and the primer layer p1, which is a release material, are firmly fixed, and then peeling of the color layer p2 and the surface coating layer p3 sequentially stacked may be minimized. .

Here, the surface treating agent may be provided as a solution diluted with hydrochloric acid or sulfuric acid in water, and may be provided with various known etching solutions capable of etching the metal surface. In addition, the above-described series of painting processes are more preferably performed before the metal frame 320 and the artificial tooth 310 are combined. Therefore, it is possible to prevent unnecessary formation of the color layer p2 on the surface of the artificial tooth 310. Of course, in some cases, the surface coating layer p3 may be applied to the outer surface of the artificial tooth 310, thereby preventing the surface of the artificial tooth 310 from being worn, damaged or discolored.

As described above, according to the present invention, since the portion of the fastening screw fastened to the artificial tooth 310 is installed in the oral cavity, the metal screw 320 is firmly supported and the durability is improved. The service life of the digital prosthesis 300 can be significantly extended.

At this time, since the inner profile of the metal frame 320 is directly installed in the oral cavity and is set based on the scanning image of the temporary prosthesis 14 whose inner and outer surfaces are corrected, the intraoral installation accuracy can be improved. In addition, even when there is no prosthetic in use, since the temporary prosthesis 14 can actually be used, the usability and convenience in the procedure can be significantly improved.

In this case, the temporary prosthesis 14 is integrally formed with a coupling region 19 where the temporary gum part, the temporary tooth part and the coupling part of the abutment 9 are joined. Therefore, the inconvenience of assembling a separate support cylinder can be eliminated. In addition, in the state in which the curable resin is applied to the inner and outer surfaces of the temporary prosthesis 14 is installed in the oral cavity and precisely corrected. Accordingly, since the position and shape of the stepped portion 324b integrally formed in the metal frame 320 are precisely formed, the installation precision may be significantly improved.

In addition, even if the metal frame 320 is made of a metallic material in order to satisfy the required strength corresponding to the mastication and the occlusal pressure, the coloring layer through a series of painting processes to match the color of the gum part of the target archery (2) ( As p2) is stacked, a high-quality digital prosthesis 300 with improved aesthetics can be provided.

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 commonly used, 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.

1d, 1e: 3D working image 1f: Corrected scanning image
2d: target surface information 3d: antagonistic surface information
9d: abutment joint profile 14d: virtual draft
19d: virtual joining area 20d: virtual fastener
21d: virtual step 14: temporary prosthesis
300: digital prosthesis 310: artificial tooth
311: support groove 312: communication hole
320: metal frame 321: gum extension
322: support protrusion 324: fastening hole
324a: coupling end 324b: step
p2: chromophoric layer

Claims (6)

Scanning images and CT images of the target arch and the clavicle arch are aligned and matched based on the image information of the combined bytes for guiding the vertical height of each subject, thereby creating a three-dimensional working image including the target and opposing surface information and implantation information. First step;
A virtual temporary prosthesis in which the inner and outer surface parts correspond to the object and clam surface information and a virtual joining area corresponding to the joining part profile of the abutment implanted in the target archery is created in the 3D work image according to the implantation information. A second step of becoming;
The temporary prosthesis manufactured in correspondence with the virtual temporary prosthesis is corrected so that the occlusal and inner surfaces are conformed to the target arch in which the abutment is implanted by the occlusal pressure between the target arch and the opposing arch in which the abutment is placed. A third step of obtaining a corrected scanning image for the provisional prosthesis;
The virtual metal frame and the virtual metal frame in which the object and the clam surface information are replaced with the corrected scanning image, wherein an inner surface profile is set according to the corrected surface information of the inner surface of the corrected scanning image, and a virtual fastening hole is set corresponding to the corrected coupling region. A fourth step of generating a virtual artificial tooth whose height is set based on outer surface correction surface information of the correction scanning image; And
And a fifth step of manufacturing the final digital prosthesis by combining the virtual metal frame and the metal frame and the artificial tooth manufactured corresponding to the virtual artificial tooth. The method of claim 1,
In the fourth step, the correction scanning image is set on the inner surface side as a matching area portion based on a boundary line selected and input along the outer side of the inner surface correction surface information, and correcting the temporary prosthesis except for the matching area portion. Surface information is erased and corrected to expose the inner surface correction surface information including the coupling region;
And an inner surface profile of the virtual metal frame is generated by replacing the exposed inner surface correction surface information. The method of claim 1,
In the fourth step, the virtual fastening hole is formed in the digital library including a virtual engaging end that is integrally protruding radially inwardly in the inner circumference but matching the engaging portion profile of the abutment below the virtual stepped portion. Already saved,
The virtual coupling end of the virtual fastening hole extracted from the digital library is virtually arranged to correspond to the three-dimensional surface information of the corrected coupling area, and the three-dimensional surface information of the corrected coupling area is erased and replaced by the virtual fastening hole. Digital prosthesis manufacturing method characterized by. The method of claim 1,
In the fourth step, the inner surface of the virtual gum extension is virtually arranged to correspond to the inner surface correction surface information, and the virtual artificial tooth is disposed virtually in correspondence with the outer surface correction surface information, and from the virtual gum extension. A virtual support protrusion protruding in correspondence to the virtual artificial tooth is set,
The virtual metal frame is set to integrate the virtual gum extension and the virtual support protrusion,
The shape and volume of the virtual support protrusion are proportional to the chewing load for each position of the dental arch line in which the joining area and the support cross-sectional area for the virtual support groove formed on the inner side of the virtual artificial tooth correspond to the outer surface of the virtual support protrusion. Digital prosthesis manufacturing method characterized in that it is set to. The method of claim 1,
In the third step, the correction scanning image is coated on the inner surface and the inner surface of the bonding region, the curable resin is applied to be installed in the target arch of the abutment implanted, the curable resin is pressed by the occlusal pressure is corrected Characterized in that it is obtained by scanning the inner and outer surfaces of the temporary prosthesis corrected, including a mating correction surface portion and the occlusal correction surface portion that is cut and corrected based on the indentation of the clavicle arch formed by the occlusal pressure Digital prosthetic manufacturing method. The method of claim 1,
In the fifth step, the metal frame is produced by three-dimensional printing the frame base corresponding to the virtual metal frame with a high-temperature vaporization resin, and the frame base is embedded in the molding sand and vaporized by high temperature of the frame base A cavity corresponding to the volume is formed, and a molten metal is filled and hardened in the cavity,
And applying a coating composition that matches the color of the target archery to the gum region corresponding area of the metal frame, thereby forming a coloring layer.

Images