KR20210106754A - method for manufacturing crown of dental implant using digital library - Google Patents

Abstract

In order to improve precision and manufacturing convenience of tooth restoration, a method for manufacturing a dental implant prosthesis using a digital library is provided. The method for manufacturing a dental implant prosthesis using a digital library comprises: a first step of loading a three-dimensional work image, obtained by matching surface information and internal tissue information of a target arch, into a planning unit, wherein three-dimensional external information of a virtual tooth in a restoration area is arranged in the three-dimensional work image; a second step of extracting, from a digital library in which a plurality of fixture images and abutment images are classified and stored according to selection items for each tooth, fixture images and abutment images matching the restoration area and virtually arranging fixture images and abutment images on the three-dimensional work image such that the arranged fixture images and abutment images correspond to preset placement information; and a third step of setting an external contour based on the external information of the virtual tooth, wherein design information of the prosthesis, in which a contour of an inner binding part is swapped with upper part external information of the abutment image superimposed on the inside of the virtual tooth and set, is transferred to a manufacturing device, and a real prosthesis is manufactured.

Description

Method for manufacturing crown of dental implant using digital library

The present invention relates to a method for manufacturing a dental implant prosthesis using a digital library, and more particularly, to a method for manufacturing a dental implant prosthesis using a digital library in which the precision and manufacturing convenience of dental restoration are improved.

In general, when the original human tissue is lost, the implant means a substitute that can replace the human tissue, but in dentistry refers to the implantation of artificially made teeth. In other words, it is a treatment method that restores the function of teeth by implanting a fixture made of titanium, etc., which does not have a rejection reaction in the human body, in the alveolar bone from which the teeth have escaped, and then fixing the artificial teeth to replace the lost root.

In detail, the implant procedure includes a process of forming a hole in the alveolar bone and placing a fixture, and when the fixture is fused to the alveolar bone, an abutment is coupled to the fused fixture and a final prosthesis is coupled.

At this time, a mating portion to be fitted with the upper outer surface of the abutment is provided inside the prosthesis, and a tolerance for laminating and applying an adhesive is formed between the inner surface of the mating portion of the prosthesis and the upper outer surface of the abutment. Here, when the tolerance is uniform, the prosthesis and the abutment may be firmly coupled, and durability of the prosthesis may be improved.

Therefore, in the prior art, in the state in which the fixture and the abutment are placed, an impression of the inside of the patient's mouth is taken, and the obtained impression is directly used or the outer surface of the prosthesis suitable for the patient's tooth arrangement after manufacturing a plaster model A final prosthesis was manufactured by setting the shape, and by setting the shape of the molded part of the prosthesis according to the upper outer surface of the abutment.

However, as described above, in the related art, since the external shape of the final prosthesis is formed after the fixture and the abutment are placed and selected, the size and thickness of the prosthesis are determined by the size of the abutment. That is, when the abutment is excessively thick, the prosthesis is easily fractured due to the masticatory pressure while the thickness of the prosthesis is relatively thin. In addition, when the length of the abutment is increased, the length of the prosthesis is longer than that of the surrounding teeth in order to secure the masticatory pressure, and the aesthetic feeling is deteriorated, and the discomfort may be increased due to the misalignment of the occlusion.

Moreover, since the prosthesis can be manufactured after the fixture and the abutment are placed in the patient's oral cavity, the period of dental restoration is increased, and an additional visit to obtain an impression is required, causing discomfort to the patient. there was

Korean Patent Registration No. 10-0693806

In order to solve the above problems, an object of the present invention is to provide a method for manufacturing a dental implant prosthesis using a digital library in which the precision and manufacturing convenience of dental restoration are improved.

In order to solve the above problems, the present invention provides a three-dimensional working image obtained by matching surface information and internal tissue information of a target arch is loaded into a planning unit, and a 3D image of a virtual tooth is loaded in the restoration area set in the three-dimensional working image. A first step in which the dimensional appearance information is virtually arranged; A plurality of fixture images and abutment images are classified according to selection items for each tooth, and fixture images and abutment images matching the restoration area are extracted from a digital library stored in advance, and the abutment image is extracted to correspond to preset placement information. a second step of virtual arrangement on a three-dimensional work image; And the design information of the prosthesis set based on the external contour information of the virtual tooth is set by swapping the contour of the inner shape-matching part with the upper part external information of the abutment image superimposed on the inside of the virtual tooth to the manufacturing device. Provided is a method for manufacturing a prosthesis for dental implants using a digital library including a third step of being transmitted and manufacturing a real prosthesis.

Here, in the third step, the fixture image matching the restoration area is selected from the digital library and displayed in the three-dimensional working image, and the abutment image corresponding to the fixture image. The step of extracting one or more pieces of information and displaying it as a virtual combined set image at the upper end of the fixture image according to preset coupling linkage information, and length values, cross-sectional area values and angle values for each size of the abutment image It is preferable to include the step of sequentially replacing and displaying the three-dimensional work image in a shape that is expanded or reduced according to a repetitive selection input.

In this case, the set image of the fixture image and the abutment image is classified and displayed in a pop-up table corresponding to the length value, cross-sectional area value and angle value for each size, and one selected according to a selection input from the pop-up table Preferably, the method includes the step of replacing and displaying the fixture image, in which the set image of a virtual arrangement is placed on the three-dimensional work image, with one set image selected according to a selection input from the pop-up table.

And, in the second step, the three-dimensional external information of the sleeve image in which the inner diameter corresponds to the outer diameter of the implantation means and at least one guide projection protrudes to the outside is concentrically arranged on the upper side of the upper end of the fixture image and displayed at the same time However, in the third step, it is preferable that the design information of the surgical guide for guiding the placement of the real fixture based on the spaced area between the surface information and the sleeve image is set.

In addition, in the second step, a three-dimensional offset profile in which a warning effect is displayed when an implantation safe area is considered outside the outer periphery of the fixture image and intersects a preset interference area is set, and the abutment image is the virtual It is preferable that the degree of deflection between the three-dimensional external information of the tooth and the image of the coupling part is sequentially compared, and when one abutment image having the highest degree of deflection is selected, an emphasis effect is displayed.

Through the above solution means, the method for manufacturing a dental implant prosthesis using a digital library according to the present invention provides the following effects.

First, since the abutment image and the fixture image are set as a set image corresponding to the combination state of the real abutment and the fixture according to the preset coupling linkage information, alveolar bone information, surface information and virtual It is possible to intuitively check the virtual arrangement state optimized with the teeth, so that the design convenience can be significantly improved.

Second, as the set image of the abutment and fixture is replaced and displayed on the 3D work image according to the selection input that reflects the length value, cross-sectional area value and angle value, the relationship with virtual teeth and surrounding tissues is output as an easily recognizable effect. By quickly determining and selecting optimal information, the design process is simplified and efficiency can be significantly improved.

Third, the virtual teeth in consideration of the surrounding teeth, opposing teeth, dentition, and vertical height are first set on the three-dimensional image, and then fixtures and abutments are selected based on them. Since it is manufactured to stably support pressure, functional satisfaction can be significantly improved.

Fourth, as the inner diameter corresponds to the outer diameter of the implantation means and the three-dimensional external information of the sleeve image in which at least one guide projection protrudes to the outside is displayed concentrically with the fixture image, it guides the placement of the real fixture. The design information of the surgical guide is acquired at the same time during the design process of the prosthesis, and since the mutual precision is significantly improved, the overall accuracy of the dental restoration can be significantly improved.

1 is a flowchart illustrating a method of manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention.
2 is an exemplary view showing a three-dimensional working image in a method for manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention.
3 is an exemplary view showing a restoration area setting process in a method for manufacturing a prosthesis for a dental implant using a digital library according to an embodiment of the present invention.
4 is an exemplary view illustrating a virtual arrangement process of virtual teeth in a method for manufacturing a prosthesis for a dental implant using a digital library according to an embodiment of the present invention.
5 is an exemplary view illustrating a fixture image selection process in a method for manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention.
6 is an exemplary view illustrating a process of selecting a set image of a fixture and an abutment in a method for manufacturing a prosthesis for a dental implant using a digital library according to an embodiment of the present invention.
7 is an exemplary view illustrating a digital library in a method for manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention.
8 is an exemplary view illustrating a deflection calculation process in a method for manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention.

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

1 is a flowchart illustrating a method for manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention, and FIG. 2 is a three-dimensional view illustrating a method for manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention. It is an example diagram showing a working image. And, FIG. 3 is an exemplary view showing a restoration area setting process in a method for manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention, and FIG. 4 is a dental dental implant using a digital library according to an embodiment of the present invention It is an exemplary diagram showing a virtual arrangement process of virtual teeth in a method of manufacturing a prosthesis for implants. 5 is an exemplary view showing a fixture image selection process in a method for manufacturing a dental implant prosthesis using a digital library according to an embodiment of the present invention, and FIG. 6 is a digital library using the digital library according to an embodiment of the present invention. It is an exemplary view showing a process of selecting a set image of a fixture and an abutment in a method for manufacturing a prosthesis for a dental implant, and FIG. 7 is a digital library in a method for manufacturing a prosthesis for a dental implant using a digital library according to an embodiment of the present invention It is also an example. And, FIG. 8 is an exemplary diagram illustrating a deflection calculation process in a method for manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention.

1 to 8, the method for manufacturing a dental implant prosthesis using the digital library 20 of the present invention includes the following series of steps.

First, the three-dimensional work image (m1) generated by matching the surface information (m2) and the internal tissue information (m4) of the target arch is loaded into the planning unit. Then, the three-dimensional external information of the virtual tooth mC is virtually placed in the restoration area m5 set in the three-dimensional work image m1 (s10).

Here, the internal tissue information m4 may be acquired through CT imaging, and three-dimensional information about internal tissues such as the crown, root, and alveolar bone of a tooth in the oral cavity is displayed as an image. That is, the internal tissue information m4 is preferably understood as a CT image obtained through CT imaging. At this time, since the internal tissue information m4 is displayed through the difference in density of oral tissues, information on teeth and alveolar bone, which are silk tissues, is clearly displayed, but information on soft tissues such as gums is displayed inaccurately.

In addition, the surface information m2 is displayed as an image of the shape of the crown of the tooth exposed to the outside from the oral cavity and the shape of the gum, which is the soft tissue around the tooth. That is, the surface information m2 is preferably understood as a scanning image obtained by directly photographing the oral cavity through an oral scanner. Such a scanning image may be obtained by scanning an impression body obtained through the oral cavity or a model manufactured based thereon.

Here, the surface information m2 and the internal tissue information m4 are matched based on a common part shown in each image, and the three-dimensional work image m1 is generated through this. At this time, the matching of the image means that information on the gum surrounding the root and alveolar bone is matched together with information on the root and alveolar bone connected to the crown by overlapping the common part on the two images as a reference, and collects it into comprehensive information. It is preferable to understand that In this case, the common part may be selected as a part displayed in the same shape at the same position in each image, and an image of a soft tissue part with low fluidity such as residual teeth or a separately attached reference marker may be set as the common part. have.

In addition, the 3D work image m1 may further include internal tissue information m4 and surface information m2 for the opposing arch that occludes the target arch. The internal tissue information m4 and surface information m2 of the opposing arch may be arranged in consideration of the target arch and a preset vertical height. In this case, the surface information m2 and the internal tissue information m4 may be digitized and loaded and stored in the planning unit. Here, the planning unit is preferably understood as a device for performing a series of digital prosthesis design processes based on the three-dimensional working image m1.

Here, the three-dimensional work image m1 may be displayed by matching the surface information m2 and the internal tissue information m4, and overlapping each image as shown in FIG. 2 . Alternatively, as in FIG. 5 to be described later, in the three-dimensional working image m1, one of the two images may flicker in a state in which information of each image is superimposed, or each image may be displayed vertically on the display. In this case, even if one of the two images is flickering or separated, it is preferable to understand that each displayed image includes information about an image that is not displayed because it flickers or is separated. That is, it is preferable to understand that the surface information m2 and the internal tissue information m4 are connected with information required for a dental restoration plan regardless of the visible information displayed on the display.

On the other hand, the CT imaging device and the oral scanner may be provided on the operator's side (dentistry), and the planning unit may be provided on at least one side of the operator's side or the manufacturer's side (a dental laboratory). That is, it is possible to obtain the surface information m2 and the internal tissue information m4 from the operator's side, and generate the three-dimensional work image m1 through the planning unit. In addition, the generated 3D work image m1 may be transmitted to the planning unit of the operator through wired/wireless communication. Alternatively, the surface information m2 and the internal tissue information m4 obtained from the operator's side are transmitted to the operator's planning unit through wired/wireless communication, and the operator's side may generate the three-dimensional image.

And, it is preferable that the restoration area m5 is set in the three-dimensional work image m1. In this case, the restoration area m5 is preferably understood as a region requiring restoration or restoration of teeth due to damage, loss, or undesirable dentition of natural or artificial teeth. Here, the restoration area m5 may be set as an empty space formed between surrounding teeth after the restoration target tooth is lost or extracted. Alternatively, the restoration region m5 is the restoration region m5 is set based on the restoration target tooth image t1 displayed on the image, but the three-dimensional working image m1, preferably the surface information ( m2) can be erased and set.

In detail, referring to FIG. 3 , the process of setting the restoration area m5 from the three-dimensional work image m1 on which the restoration target tooth image t1 is displayed is as follows.

First, a plurality of boundary points 4 are set apart from the surface information m2 at a predetermined interval along the outer edge of the restoration target tooth image t1. In this case, the boundary point 4 may be manually set, or may be automatically set along the periphery of the restoration target tooth image t1 through image operation. And, a connecting line 4a connecting the plurality of the boundary points 4 is set, and the image t1 of the tooth to be restored on the basis of the connecting line 4a is set and deleted as an erasing area. The restoration area m5 may be set between t2).

And, referring to FIG. 4 , it is preferable that the virtual tooth mC is virtually disposed inside the restoration area m5 . Here, the virtual tooth mC is preferably understood as 3D external information of a standardized tooth corresponding to each tooth position (eg, anterior teeth, canines, premolars, molars, etc.). The virtual tooth mC may be virtually disposed in the restoration area m5, and the size and length may be adjusted in consideration of the size, direction, and arrangement of the surrounding tooth image t2 and the opposing tooth image t3.

As such, in the present invention, the size and length of the virtual tooth mC are first set on the three-dimensional work image m1. That is, in the state that the external information about the real prosthesis is set to have the desired dentition and vertical height with the surrounding teeth and the opposing teeth remaining in the oral cavity, product information about the real fixture and the real abutment suitable for this is selected can be Therefore, since the actual prosthesis finally manufactured is manufactured and placed so as to have an even tooth arrangement with the surrounding teeth, aesthetic satisfaction in use can be significantly improved. In addition, the real prosthesis is manufactured and placed to have a precise vertical diameter with the opposing teeth, and the selected real fixture and the real abutment are manufactured to stably support the masticatory pressure, so functional satisfaction with use This can be significantly improved.

Meanwhile, a fixture image m31 and an abutment image m32 matching the restoration area m5 are extracted from the digital library 20 . Then, the extracted fixture image m31 and the abutment image m32 are virtually arranged on the three-dimensional work image m1 to correspond to the preset placement information m3 (s20).

In detail, with reference to FIGS. 5 to 7 , the digital library 20 is understood as a database in which the three-dimensional appearance information obtained for the fixtures and abutments of the real thing pre-manufactured in various standards are imaged and stored. desirable. The digital library 20 may be included as a database in the planning unit, and may be provided as a separate storage medium connected to the planning unit through wired/wireless communication.

In this case, it is preferable that the plurality of fixture images m31 and the abutment image m32 are classified according to a selection item for each tooth and stored in the digital library 20 . The fixture image m31 and the abutment image m32 refer to three-dimensional vector data that can reproduce the appearance and structure of the real fixture and the real abutment in the same way, and the real fixture and direct scanning of the real abutment or through CAD/CAM design information.

In detail, the fixture image m31 may be classified into a plurality by subdividing the length, diameter, thread, and coupling groove shape into optional items according to the position of each tooth, alveolar bone thickness, bone mass, bone density, and the like. In addition, the abutment image m32 may be classified into a plurality by subdividing the shape of the connection part, the cuff part, the margin part, and the post length and angle into optional items according to the type of each tooth and the standard of the fixture. . In addition, the abutment image m32 may be subdivided and classified according to a length value, a cross-sectional area value, and an angle value for each size. Here, the plurality of fixture images m31 and the plurality of abutment images m32 are assigned independent part numbers according to standards and are stored in the digital library 20 . At this time, each part number may be displayed as continuous numbers/symbols/characters, etc. information about the manufacturer, the diameter of the fixture image m31, the length of the post, and the like.

Here, referring to FIG. 5 , the restoration among the plurality of fixture images m31 pre-stored in the digital library 20 based on the internal tissue information m4 included in the three-dimensional work image m1. One fixture image m31 matching the area m5 is selected. Then, the selected one fixture image m31 is arranged in the internal tissue information m4 along the implantation information m3 and is virtually disposed. In this case, the implantation information m3 is preferably set in consideration of the arrangement and angle of the virtual tooth mC, the root of the surrounding tooth t2, the alveolar bone density, and the like.

In detail, the fixture image m31 may be displayed as a pop-up table p on the planning unit. The three-dimensional work image m1 may be automatically aligned and displayed in response to the implantation information m3. In addition, the operator may manually or automatically adjust the position of the fixture image m31 according to the implantation information m3. At this time, since the surface information m2 and the internal tissue information m4 are matched on the basis of the common part and the information of each image is linked, the fixture image m31 virtually placed in either of the two images. ), the position can be moved in the same way on other linked images.

Then, one of the displayed fixture images m31 is reselected or selected through a preset selection input while moving the image displayed on the pop-up table p left and right. Through this, the fixture image m31 displayed in the three-dimensional work image m1 may be replaced with the reselected fixture image m31 and displayed. Here, it is preferable to understand that the preset selection input means selecting specific information by inputting a specific key or specific information of an input device. For example, images displayed on the left or right or up, down, left, and right on the pop-up table p can be sequentially replaced and selected using the direction keys or character keys of the keyboard, and correspond to the selected position in the pop-up table p. image may be virtually arranged in correspondence to the implantation information m3 on the three-dimensional work image m1.

That is, the fixture image m31 displayed in the pop-up table p is linked to the fixture image m31 aligned in correspondence to the implantation information m3 set on the three-dimensional work image m1, and at the same time can be displayed. Then, one of the fixture images m31 suitable for the patient's alveolar bone is selected through the cross-sectional image of the internal tissue information m4 displayed for each coordinate in the three-dimensional work image m1.

At this time, referring to FIGS. 6 to 7 , the part number and information of the fixture image m31 may be displayed together with the fixture image m31 on the pop-up table p. Through this, information on the fixture image m31 can be intuitively checked, so that design convenience can be further improved.

In detail, when one fixture image m31 is selected, one or more pieces of information about the abutment image m32 corresponding to the fixture image m31 are extracted. At this time, the abutment image (m32) is displayed as a virtual combined set image (m30) at the upper end of the fixture image (m31) according to the predetermined coupling linkage information (h) with the fixture image (m31). desirable. Here, the coupling linkage information (h) is a coupling groove image (h1) set at the upper end of the fixture image (m31) and the coupling groove image (h1) at the lower end of the abutment image (m32) to be virtually formed. It is preferable to include the set connection part image h2.

And, as shown in FIG. 7 , of the abutment image m32 pre-stored in the digital library 20, the coupling groove image h1 of the fixture image m1 and the connection part image h2 that can be virtualized have a connection part image (h2) A plurality of abutment images m32 may be extracted. In addition, the lower end of the abutment image m32 may be virtually combined with the upper end of the fixture image m31 according to the coupling linkage information h to be displayed as a set image m30.

Here, the length value, the cross-sectional area value, and the angle value for each size of the abutment image m32 are alternately displayed on the three-dimensional work image m1 in a shape that is expanded or reduced according to repeated selection input. In detail, when one fixture image m31 is selected, the set image m30 of the fixture image m31 and the abutment image m32 corresponds to the length value, cross-sectional area value and angle value for each size. It is classified and displayed in the pop-up table (p). In addition, one set image m30 selected according to a selection input in the pop-up table p may be replaced and displayed with the fixture image m31 virtually placed on the three-dimensional work image m1.

At this time, the abutment image m32 is displayed in a virtual state through the fixture image m31 and the coupling linkage information h, and the fixture image m31 and the abutment image m32 ) may be virtually combined to extract and display a plurality of the set images m30a, m30b, m30c, m30d, m30e, and m30f. In detail, the abutment image m32 is classified into length, cross-sectional area, and angle as optional items with respect to the fixture image m31 and is displayed in the pop-up table p. In addition, the fixture image m31 virtually placed on the 3D work image m1 is replaced with the set image m30 selected from the pop-up table p and displayed.

That is, the virtual tooth mC is virtually placed on the three-dimensional work image m1, and the fixture image m31 is first selected based on the virtual tooth mC and the internal tissue information m4. Then, when the fixture image m31 is determined, the abutment image m32 is selected by considering the fixture image m31 , the virtual tooth mC, and the surface information m2 . In this case, the abutment image m32 and the fixture image m31 are virtually arranged as a set image m30 on the three-dimensional work image m1.

As described above, according to the present invention, the fixture image m31 and the abutment image m32 are set substantially integrally through the coupling linkage information h on the three-dimensional work image m1, and are virtually arranged. Through this, the degree of matching between the virtual tooth mC, the fixture image m31, and the abutment image m32 is intuitively displayed on the three-dimensional work image m1, so that design convenience will be significantly improved. can

In addition, by simply reselecting another image from among the plurality of set images displayed in the pop-up table (p), the fixture image m31 and the abutment image m32 are immediately swapped and swapped for the three-dimensional work It may be displayed on the image m1. Through this, the fixture image m31 and the abutment image m32 that are optimized and matched to the virtual tooth mC can be quickly determined and selected, thereby simplifying and shortening the design process.

At this time, it is preferable that the three-dimensional offset profile (s) in consideration of the implantation safety area is set to the outside of the fixture image (m31). In detail, the three-dimensional offset profile (s) is set in consideration of the distance from the adjacent implant or tooth root to induce stable bone regeneration when the real fixture is implanted in the alveolar bone, and the 3 of the fixture image (m31) It can be set to be spaced apart by 1.5 to 2 mm from the dimensional outline information.

Here, it is preferable that the three-dimensional offset profile (s) is displayed as a warning effect when it intersects with a preset interference region. In detail, the interference region may be set as a three-dimensional offset profile s of the fixture image m31 that is virtually arranged adjacently, or a peripheral tooth image t2, a maxillary sinus image, an inferior alveolar nerve image, or the like. That is, when the three-dimensional offset profile s engages or intersects with the interference region in a state in which the fixture image m31 is virtually placed on the three-dimensional work image m1 in response to the implantation information m3 A warning effect is displayed. In addition, the operator can intuitively check the warning effect and perform tasks such as replacing it with another fixture image m31 or adjusting the virtual arrangement position of the fixture image m31. Through this, through the rough judgment of the operator, the fixture image m31 and the interference region overlap or the fixture image m31 that is difficult to support the masticating pressure to maintain a wide interval is selected. can be prevented in advance.

In this case, the warning effect may be displayed in a way that the color of the three-dimensional offset profile (s) is transformed. For example, the three-dimensional offset profile (s) may be displayed in green in a state in which it does not intersect or intersect with the interference region, and may be displayed in red as soon as it engages or intersects with the interference region. Alternatively, the warning effect may be displayed in a pop-up window or sound, and such a modification is within the scope of the present invention.

In addition, the abutment image m32 is preferably displayed as an emphasis effect when one abutment image m32 having the highest deflection and the virtual tooth mC is selected.

In detail, according to the set image m30 selected from the pop-up table p, the abutment image m32 is virtually fitted to the upper end of the fixture image m31 on the three-dimensional work image m1. replacement is swapped. At this time, the image of the upper end of the abutment image m32 is virtually disposed by overlapping the inside of the virtual tooth mC based on the margin. In addition, a minimum value among distances calculated for the outer surface of the upper end image of the plurality of abutment images m32 from a plurality of reference points preset on the outer surface of the virtual tooth mC is respectively extracted and set as a deflection degree. Here, the degree of deflection of the plurality of abutment images m32 is sequentially compared, and one abutment image m32 having a high degree of deflection capable of maximizing the supporting force for the virtual tooth mC is obtained. is highlighted.

Here, referring to FIG. 8 , the horizontal or vertical distance from each reference point to the outer surface of the abutment image m32 is calculated, and a minimum value among the calculated distance values is set as the deflection degree. For example, the reference point may be set to four places: the center of the upper surface, the left, right, front, and rear of the virtual tooth mC, the vertical distance c1 in the upper surface, and the horizontal distance c2, c3 in the four side portions ) can be calculated. Here, the low deflection means that there is an excessively thin portion of the real prosthesis coupled to the upper end of the real abutment, and the high deflection means that the real prosthesis has a sufficient thickness, It is preferred to understand that it is manufactured.

In this case, when the deflection of the plurality of abutment images m32 is calculated, one abutment image m32 having the highest degree of deflection may be highlighted. It is preferable to understand that the highlight display is that the fixture images m31 having a relatively low deflection flicker or the surrounding color of the abutment image m32 having the highest deflection is converted or displayed in a darker color.

As such, in the present invention, the fixture image m31 and the abutment image m32 are displayed in a virtual arrangement state at the same time, so that the matching between the virtual tooth mC and the surrounding teeth t2 can be intuitively confirmed. have. In addition, the placement position of the fixture image m31 and the fastening position, angle, size, etc. of the abutment image m32 are automatically determined through each calculated value calculated through the planning unit, and a warning is displayed or emphasized. It can be easily identified by marking. Accordingly, as a real fixture and a real abutment that precisely match the design information of the restoration area m5 and the virtual tooth mC are selected, the accuracy of dental restoration can be remarkably improved.

Furthermore, the fixture image m31 and the abutment image m32 matching the virtual tooth mC are first virtually placed in the three-dimensional working image m1 are selected. Therefore, while the real prosthesis is fixed with the peripheral teeth (t2) and the opposing teeth (t3) with the desired teeth and vertical height, the real abutment can be selected as a standard that can stably support the real prosthesis. have.

On the other hand, the outer contour is set based on the outer contour information of the virtual tooth mC, and the contour of the molded part is swapped with the upper end contour information of the abutment image m32 to generate design information of the set prosthesis. Then, the design information of the prosthesis is transmitted to the manufacturing device to manufacture the real prosthesis (s30). Here, the manufacturing apparatus is preferably understood as a 3D printer or a mold apparatus for manufacturing the real prosthesis to correspond to the design information of the prosthesis.

In detail, a molded portion fixed to cover the upper end of the abutment is formed in the shape of a groove inside the real prosthesis. In this case, the molded portion is formed to have substantially the same shape as the upper end of the abutment of the real thing and to include a predetermined tolerance to which the adhesive can be applied. In this case, the shape-fitting portion is formed in consideration of a preset tolerance interval based on the virtual tooth mC and the abutment image m32 virtually superimposed on the three-dimensional work image m1. As such, since the design information of the prosthesis is manufactured based on the three-dimensional external information of the real fixture and the real abutment that are actually placed and fastened in the oral cavity, mutual precision can be significantly improved.

At this time, in the step in which the fixture image m31 or the set image m30 of the fixture and the abutment is virtually arranged on the three-dimensional work image m1, the three-dimensional external information of the sleeve image m51 may be virtually arranged concentrically above the upper end of the fixture image m31 and displayed at the same time. And, in the process of generating the design information of the prosthesis, based on the spaced area between the surface information (m2) and the sleeve image (m51), the design information of the surgical guide for guiding the implantation of the real fixture is set. This is preferable.

That is, in the present invention, the abutment image m32 and the sleeve image m51 are displayed at the same time as the abutment image m32 and the sleeve image m51 are aligned concentrically based on the implantation information m3 above the upper end of the fixture image m31. . At this time, each image can be moved and rotated in the vertical direction in a state in which the center is aligned and fixed based on the implantation information m3. Accordingly, each image may be virtually arranged so as not to interfere with an interference region to be described later, and design information of a virtual tooth mC and a surgical guide may be simultaneously acquired based on each image.

At this time, the sleeve is fastened to the surgical guide at a position corresponding to the implantation information (m3). In detail, the sleeve is preferably understood as a member in which at least one guide protrusion m52 protrudes outside the outer diameter of the sleeve corresponding to the outer diameter of the drill for installing the real fixture. This sleeve is fastened to the coupling hole formed in the surgical guide in response to the implantation information m3, and the guide protrusion m52 is arranged in a preset direction to guide the fastening direction of the abutment of the real thing. desirable.

To this end, the distance between the sleeve image m51 and the fixture image m31 on the three-dimensional work image m1 is adjusted, and the direction in which the guide projection m52 image protrudes may be set. At this time, although not shown in the drawing, the three-dimensional offset profile s may be set outside the outer edge of the sleeve image m51. Through this, it is possible to prevent in advance that each guide protrusion m52 of the sleeve that is adjacently fastened during the design and manufacturing process of the surgical guide overlaps.

As such, in the present invention, as long as the fixture image m31 is selected, based on this, the abutment image m32 and the sleeve image m51 are simultaneously virtually placed on the three-dimensional work image m1. have. Accordingly, not only the design information of the prosthesis but also the design information of the surgical guide for guiding the accurate placement of the real fixture can be simultaneously acquired based on the same information. Through this, a dental restoration plan through the real prosthesis can be established quickly and easily. In addition, the real fixture and real abutment required for dental restoration are selected appropriately for the oral environment, and the manufactured real prosthesis and the real surgical guide are precisely matched to the oral cavity, so the accuracy and precision of dental restoration This can be significantly improved.

On the other hand, terms such as "comprises", "comprises", "provide" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated. It should be construed as not excluding components, but may further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and modifications can be implemented by those of ordinary skill in the art to which the present invention pertains without departing from the scope of the claims of the present invention. and such modifications are within the scope of the present invention.

m1: 3D work image m2: Surface information
m3: placement information m4: internal organization information
m5: restoration area mC: virtual tooth
m30: set image m31: fixture image
m32: abutment image t1: restoration target tooth image
t2: image of surrounding teeth t3: image of opposing teeth

Claims (5)

A first step of loading a three-dimensional working image obtained by matching the surface information and internal tissue information of the target arch into a planning unit, wherein the three-dimensional external information of the virtual tooth is virtually placed in the restoration area set in the three-dimensional working image;
A plurality of fixture images and abutment images are classified according to selection items for each tooth, and fixture images and abutment images matching the restoration area are extracted from a pre-stored digital library and correspond to preset placement information. a second step of virtual arrangement on a three-dimensional work image; and
The outer contour is set based on the outer contour information of the virtual tooth, and the contour of the inner shape portion is swapped with the upper end outer form information of the abutment image superimposed on the inside of the virtual tooth, and the set prosthesis design information is transmitted to the manufacturing device A method of manufacturing a dental implant prosthesis using a digital library including a third step of manufacturing a real prosthesis. The method of claim 1,
The third step is
the fixture image matching the restoration area is selected from the digital library and displayed in the three-dimensional working image;
The step of extracting one or more information on the abutment image corresponding to the fixture image in plurality and displaying it as a virtual combined set image at the upper end of the fixture image according to preset coupling linkage information;
Digital library comprising the step of sequentially replacing and displaying the length value, cross-sectional area value, and angle value for each size of the abutment image in a shape that expands or contracts according to repeated selection input on the three-dimensional work image A method of manufacturing a prosthesis for dental implants using 3. The method of claim 2,
The third step is
classifying and displaying the set image of the fixture image and the abutment image in a pop-up table corresponding to the length value, cross-sectional area value, and angle value for each size;
a step in which the fixture image in which one set image selected according to the selection input from the pop-up table is virtually placed on the three-dimensional work image is replaced with one set image selected according to the selection input from the pop-up table; A method of manufacturing a prosthesis for dental implants using a digital library, characterized in that it is The method of claim 1,
In the second step, the three-dimensional external information of the sleeve image in which the inner diameter corresponds to the outer diameter of the implantation means and at least one guide protrusion protrudes to the outside is concentrically placed on the upper part of the upper end of the fixture image and displayed at the same time,
In the third step, based on the spaced area between the surface information and the sleeve image, design information of a surgical guide for guiding the implantation of a real fixture is set. Manufacturing a dental implant prosthesis using a digital library Way. The method of claim 1,
In the second step, a three-dimensional offset profile in which a warning effect is displayed is set when an implantation safe area is considered outside the outer periphery of the fixture image and intersects a preset interference area,
The abutment image is characterized in that the degree of deflection between the three-dimensional external information of the virtual tooth and the coupling part image is sequentially compared, and when one abutment image having the highest degree of deflection is selected, an emphasis effect is displayed. Method of manufacturing prosthesis for dental implant using digital library.

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