KR101726706B1 - method for manufacturing crown of dental implant using digital library - Google Patents

Abstract

In order to improve the economical efficiency of the implant treatment and improve the precision of the manufactured prosthesis by reducing the cost and time consumed in manufacturing the prosthesis, the present invention obtains the three-dimensional outline information of the prepared abutment, A first step of obtaining a CT shot image and an oral scan image of the inside of the subject's mouth; A second step in which the CT shot image and the ORAL scan image are matched to obtain a three-dimensional integrated image; A third step in which the solid body image is disposed in the three-dimensional integrated image so as to correspond to the inside of the mouth of the subject; A fourth step of extracting at least one abutment image corresponding to a unique number of the fixed body image from the digital library and displaying the extracted abutment image as a list; And an outline profile is set based on the arrangement of the peripheral teeth displayed in the three-dimensional integrated image, wherein the outer-surface profile is set based on the outline information of the abutment image, And a fifth step in which the physical prosthesis is manufactured using the digital library.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a prosthesis for a dental implant using a digital library,

The present invention relates to a method of manufacturing a prosthesis for a dental implant using a digital library, and more particularly, to a digital library which improves the economical efficiency of the implant procedure by reducing the cost and time consumed in manufacturing the prosthesis, To a method of manufacturing a dental implant prosthesis using the same.

Generally, an implant refers to a substitute for replacing a human tissue when the original human tissue is lost, but refers to implanting an artificial tooth in the dentistry. It is a procedure to restore the function of the tooth by fixing a prosthesis made of titanium or the like, which has no rejection to the human body, in place of the lost tooth, and then implanting the tooth in the alveolar bone that has passed through and fixing the artificial tooth (prosthesis).

In other words, the implant procedure consists of forming perforations in the alveolar bone, placing the fixture, bonding the abutment to the fused fixture when the fixture is fused to the alveolar bone, and combining the final restoration, the prosthesis.

At this time, the inside of the prosthesis is provided with a mold-fitting portion to be fitted with the upper outer surface of the abutment. A tolerance for inserting the adhesive is formed between the inner surface of the mold part of the prosthesis and the outer surface of the abutment, and the durability of the prosthesis can be improved when the tolerance is uniform.

Therefore, conventionally, in the state where the fixture and the abutment are placed, the impression of the inside of the mouth is acquired, and the obtained impression is directly used or a gypsum model is manufactured with the obtained impression, and then the exterior of the prosthesis A profile was set, and a molded part of the prosthesis was set according to the outer surface of the abutment upper part to prepare the prosthesis.

However, it is difficult to obtain accurate design information on the upper external surface of the abutment because it is common in the case of the ready-made abutment manufactured by mass production, that is, the abutment construction or the design which does not consider external image acquisition through oral scanning.

Therefore, it is difficult to design the abutment part of the prosthesis to be suitable for the abutment, and the prosthesis is broken due to the pressure at the time of chewing or the bonding force of the prosthesis is low.

Further, since the prosthesis can be manufactured after the fixture and the abutment are placed on the wearer, the procedure period is increased, and additional visit is required to obtain the impression, thereby causing inconvenience.

Korean Patent No. 10-0693806

The present invention relates to a method of manufacturing a prosthesis for a dental implant using a digital library in which cost and time consumed in manufacturing a prosthesis are reduced to improve the economical efficiency of the implant procedure and the precision of the manufactured prosthesis is improved.

In order to solve the above problems, the present invention provides a digital library, wherein three-dimensional external shape information on a plurality of abutment abutments manufactured is prepared and prepared as a digital library, and a first CT scan image and an oral scan image, step; A second step in which the CT shot image and the ORAL scan image are matched to obtain a three-dimensional integrated image; A third step in which the solid body image is disposed in the three-dimensional integrated image so as to correspond to the inside of the mouth of the subject; A fourth step of extracting at least one abutment image corresponding to a unique number of the fixed body image from the digital library and displaying the extracted abutment image as a list; And an outline profile is set based on the arrangement of the peripheral teeth displayed in the three-dimensional integrated image, wherein the outer-surface profile is set based on the outline information of the abutment image, Wherein the abutment portion between the abutment surface image and the prosthesis image is calculated, and in the fifth step, the abutment portion between the abutment surface image and the prosthesis image is calculated, And calculating design information of the physical prosthesis according to three-dimensional solid coordinates corresponding to a range from the mold-assembling portion to an outer profile of the prosthesis image. And a manufacturing method thereof.

The fourth step includes a step of extracting a unique number of the stationary object image, a step of extracting a unique number of the stationary object image, And extracting at least one abutment image from the digital library according to predetermined binding association information for each zone-based three-dimensional outline information.

The first step may include the step of assigning a unique number to the acquired three-dimensional outer shape information for the plurality of fixed bodies manufactured and stored in the digital library.

In the fifth step, the extracted abutment images are sequentially arranged in a virtual manner, and the minimum value of the distances calculated for the outer surface of the abutment image from the predetermined plurality of reference points on the outer surface of the prosthesis image, Wherein the abutment images of the abutment images are sequentially compared with the deflections of the abutment images having different degrees of deflection of the abutment images, and one abutment image having the highest degree of deflection is emphasized so as to maximize the supporting force of the abutment It is preferable to include a step to be displayed.

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

First, since the preformed 3D fixture and 3D contour information are prepared according to the manufacturers and specifications and prepared as a digital library, if the implant placement position is determined in the 3D integrated image, the fixture, abdomen, And can be shipped, so that rapid and efficient procedures can be performed without troublesome procedures such as additional visits for acquiring a dentist impression.

Second, because the linkage information is provided in the three-dimensional outer shape information of each region, the abutment image that can be coupled to the solid image selected through the unique number of the fixed solid can be extracted quickly, and a selected one of the abutment images The joint alignment between the fixture, the abutment, and the prosthesis can be improved.

Third, a plurality of abutment images extracted through the unique number of the existing fixture are compared with each other according to the deflection calculated as the distance from the outer surface of the prosthesis image, so that the support force for the prosthesis can be maximized The precision of the implant procedure can be improved.

1 is a flowchart illustrating a method of manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dental implant prosthesis.
3 is a view illustrating a digital library in a method of manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention.
4 is a view illustrating a procedure of selecting an abutment image in a method of manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention.
5 is a view illustrating a process of calculating a bias in a method of manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention.
6 is a view illustrating a process of matching an abutment image in a state where a physical object is implanted in a method of manufacturing a prosthesis for a dental implant 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.

FIG. 1 is a flowchart illustrating a method of manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention. FIG. 2 is a flowchart illustrating a method of manufacturing a prosthesis for a dental implant using a digital library according to an embodiment of the present invention. FIG. 3 is an exemplary view illustrating a digital library in a method of manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention. FIG. 4 is a view illustrating a digital library according to an embodiment of the present invention. FIG. 5 is a view illustrating a process of calculating a bias in the method of manufacturing a prosthesis for dental implants using a digital library according to an embodiment of the present invention. FIG. 5 is a view illustrating a process of selecting an image of an abutment in a method of manufacturing a prosthesis for a dental implant using a library. 6 is a block diagram of a digital FIG. 3 is a view illustrating a process of matching an abutment image in a state where the abutment is placed on the abutment in the method of manufacturing a prosthesis for a dental implant using a library.

As shown in FIGS. 1 to 6, a method of manufacturing a prosthesis for a dental implant using the digital library of the present invention comprises the following steps.

First, three-dimensional outer shape information on a plurality of prepared abutments is obtained and prepared as a digital library (s10). Here, the abutment means a fixture replacing the role of the root placed in the alveolar bone, and a part connecting the prosthesis replacing the role of the crown used for the actual chewing.

2, the abutment is formed at the lower part of the connection part 30c to be inserted into and coupled with the coupling groove formed on the upper surface of the fixture, and is formed on the upper part of the connection part 30c to be closely attached to the gum, A margin 30b having an enlarged cross-sectional area, and an engaging portion 30c protruding from the center of the upper surface of the margin 30b to engage with the prosthesis.

In this case, it is preferable to understand that the manufactured abutment means the abutment abutment manufactured in the form suitable for the fixture in the manufacturer of the fixture. That is, the standard stockers are provided with different specifications of the connecting parts according to the manufacturers.

In addition, the ready-made land area is a product group to which an insurance benefit is paid, and is divided into an integrated type in which an abutment body and a screw for connecting a fixed body are integrated, a abutment body and a separated type in which a screw for connecting a fixed body is separated, , And an inclined type in which the coupling portion is inclined.

At this time, the finished stock is produced in various sizes combined with unit sizes such as a margin length, a joint length, and an inclination angle of a coupling part of 1 mm to 5 degrees.

Referring to FIG. 3, it is preferable that the digital library 10 be understood as a database of three-dimensional outer shape information obtained for real abutment abutments of various standards.

That is, the 3D contour information of the region is the 3D vector data that can reproduce the physical shape and structure of the real area, and can be obtained through direct scanning of the real area or CAD / CAM design information.

At this time, the 3D contour information of each zone is assigned to an independent part number according to the standard and is stored in the digital library 10. For example, different abutment numbers of the same standard are assigned the same part number, and different abutment numbers of different standards are assigned different part numbers.

In addition, the step (s10) of preparing the digital library 10 may include the step of assigning a unique number to the three-dimensional outer shape information of the plurality of fixtures manufactured and stored in the digital library.

That is, the digital library 10 preferably further includes three-dimensional outer shape information obtained for the plurality of fixtures manufactured in the past. In detail, the fixture is formed with a thread for mounting on the alveolar bone on the outside, and an engaging groove 40a for engaging the abutment on the upper end.

Herein, it is understood that the manufactured fixture means a built-in fixture which can be classified according to the maker and the diameter, and the three-dimensional shape information of the fixture is a three-dimensional image that can reproduce the appearance and structure of the fixture Dimensional vector data, which can be obtained through direct scanning of the object and CAD / CAM design information.

In addition, the three-dimensional outer shape information obtained for each of the fixtures may be added to the digital library 10 and stored therein. Here, the unique number means that the manufacturer and the diameter are displayed in consecutive numbers / symbols / English, and a unique number can be assigned to the fixed body having one standard.

For example, a 10 mm diameter fixture manufactured by Company X may have a unique number of X-10, a 10 mm diameter manufactured by Company X, that is, all fixtures of the same specification have the same unique number, Or different diameters, they have different unique numbers.

At this time, it can be understood that the fixed fastener has the same type of engaging groove and the same type of engaging groove with the same diameter, and the fastener having the same size or the same number has the same type of engaging groove.

The 3D contour information of each zone may further include joint linkage information for a unique number corresponding to a specification of a connection unit provided at each lower portion.

At this time, the coupling link information is pre-set for each three-dimensional outer shape information of each zone so as to indicate at least one fixed body unique number having a coupling groove that is matched to the coupling portion of each zone.

For example, the three-dimensional contour information for one abutment may be composed of the part number, the three-dimensional vector data, and the joint link information. Here, it is preferable that the coupling link information is a unique number of a fixed body having a coupling groove conformable to the standard of the coupling portion provided below the respective zones, that is, the coupling portion can be fastened.

At this time, it can be understood that one or more unique numbers included in the association information may be provided, and the corresponding state information may be concatenated into a joining groove of a fixed body corresponding to a unique number included in the joint association information. Thus, a zone capable of being coupled to the pre-selected fixed body image can be extracted quickly.

In this case, each binding linkage information can be confirmed through catalogs provided by the respective fixture and zone manufacturer, and it can be confirmed by directly connecting multiple pairs of fixture and abutment, and the confirmed linkage information May be updated in the digital library 10.

At this time, the linkage information stored in the digital library 10 can be easily searched through the unique number of the fixture or the part number of the fixture.

Here, the digital library 10 may be prepared in a procedure support center so that three-dimensional external shape information on various existing fixtures and abutment abutments manufactured by various manufacturers can be integrally provided, You can use the digital library by installing it or by networking with the support center.

On the other hand, when the digital library 10 is prepared, a CT shot image and an oral scan image of the subject's mouth are acquired (s10).

Here, the CT image can be acquired through the CT imaging device. The CT image can be acquired through the CT imaging device, and the crown part of the tooth (the upper side of the tooth appearing outside the gum), the root (the lower side of the teeth coupled with the alveolar bone in the inside of the gum) It contains information about internal organization.

At this time, the CT image may show clear information about the teeth and the alveolar bone, but it is preferable that the information of the soft tissues such as the gums is almost inaccurate, so that it is complemented by the oral scan image.

Here, the oral scan image may indicate the shape of the crown portion of the tooth exposed to the outside from inside the oral cavity and the shape of the gum around the tooth.

In detail, the oral scan image can be obtained by directly photographing the inside of the oral cavity through an oral scanner, and it can also be obtained by scanning a gypsum model manufactured through an impression member or impression member to the inside of the oral cavity.

1 and 2, when the CT photographed image and the oral scan image are obtained (s10), the obtained three-dimensional integrated image 1 is obtained by matching the obtained images (s20).

In detail, since the implantation procedure must take into consideration internal and external conditions such as the arrangement and bonding between the alveolar bone and the fixture according to the bone mass, bone density and distribution of the alveolar bone, the external shape and arrangement angle of the space between the teeth and the prosthesis, , It is possible to provide a more accurate and complete procedure.

Here, the matching of the images can be made based on the common part appearing in each image.

In other words, the term "matching the images" means that the two images are combined based on a common part in the two images, and the information of the root and alveolar bone connected to the crown and the information of the gums bonded to the root and alveolar bone are matched with each other, And the like.

For example, the matching of the images can be performed through a crown, which is a common part of each image, and it is also possible to perform a marker based on the marker by installing a marker in the mouth, It is also possible to match the images based on the selected features.

At this time, each of the images may be digitized and stored in a computer storage device, and the matching process of each image may be performed using an image processing program.

Here, the acquisition of the three-dimensional integrated image (1) may be performed directly in the individual dentistry in which the CT image and the oral scan image are obtained, but it is also possible to acquire each image in the individual dentistry, It is more preferable to be performed within the operation support center after transfer to the center.

On the other hand, when the three-dimensional integrated image 1 is obtained (s20), the still image 40 is virtually arranged in the three-dimensional integrated image 1 so as to correspond to the interior of the subject's mouth (s30).

Here, the three-dimensional integrated image 1 includes comprehensive information on the inside of the subject's mouth, i.e., the alveolar bone 2, the teeth (root and crown), and the gum 7 as three-dimensional vector data. It is displayed as a visual image through vector data, and the volume, position, etc. of each part can be calculated numerically or compared with each other.

In detail, when a pre-determined portion or a portion requiring extraction is identified through the three-dimensional integrated image 1, the implant placement position 4 at which the implant treatment is to be performed is determined through consultation between the practitioner and the subject.

Then, if the diameter of the fixture is set according to the pressure of the tooth to be replaced, a suitable fixture of the manufacturer is determined and the fixture image (from the digital library 10) according to the unique number corresponding to the make and diameter of the fixture 40 may be extracted.

In this case, the fixed body image 40 means that the three-dimensional outer shape information is converted and displayed as a three-dimensional image, and the three-dimensional outer shape information of the fixed body is converted into a coordinate system of the three- Converting to the appropriate image can be displayed.

That is, if the external information of the various physical fixtures is cataloged and displayed through the digital library 10, a single fixture image suitable for the inside of the mouth of the physician can be selected from the displayed images, It is also possible to select a solid image by entering a unique number.

When the bone alveolar bone amount and thickness of the implant placement position 4 are analyzed using the visual image or the vector data of the three-dimensional integrated image 1, the depth and direction of the implantation of the fixture are calculated, The fixed body image 40 can be virtually arranged in the three-dimensional integrated image 1 according to the depth and direction.

For example, the selected fixed body image 40 can be placed virtually in the three-dimensional integrated image 1 via dragging, three-dimensional coordinate input, or the like. In the outer periphery of the fixed body image 40, An overlapping safety line corresponding to a predetermined set safety distance can be displayed.

In this case, the installation safety distance means a distance at which the pressure applied to the fixture during mastication is not transmitted to the nerve tissue or other adjacent fixtures or roots, and may be set to about 1 mm.

Then, the stability of placement of the fixture is determined through the vector information or the visual analysis of the overlapping safety line, and a sufficient amount of bone for support or osseointegration is secured in the peripheral alveolar bone 2 of the vertically arranged fixed body image 40 The position and orientation of the fixture can be determined.

When the fixed body image 40 is virtually arranged in the three-dimensional integrated image 1 (s30), a curricular guide for guiding the drilling of the perforation and the placing of the fixture for placement of the fixture guide can be manufactured.

Here, on one side of the surge guide, there is formed a fixing groove portion which is formed in the outer surface profile of the gum 7 and the peripheral teeth 3 adjacent to the implant placing position 4, and the direction, A guide hole is formed.

At this time, the surge guide can be stably fixed to the inside of the mouth of the subject through the fixing groove, and when the surge guide is fixed, the perforation can be drilled using the guide hole, The procedure of placing the surgical instrument can be accurately performed.

2 to 4, when the fixed body image 40 is virtually arranged (s30), at least one abutment portion corresponding to the unique number of the fixed body image 40 from the digital library 10 The images 30, 30a, 30b, and 30c are extracted and displayed as a list 20 (s40).

Here, the fixed image (40) means that the three-dimensional outer shape information of the physical fixture is converted into an image, and the unique number is a continuous number assigned to distinguish the physical fixture according to the manufacturer and diameter, Character, symbol combination.

The abutment image (30) means that the 3D contour information of the real area is converted into an image, and the 3D contour information of the abutment is suitable for the coordinate system of the 3D integrated image through simple coordinate transformation of the 3D vector data Images can be converted and displayed.

Referring to FIG. 3, the digital library 10 includes three-dimensional external information on a plurality of abutment fabrics manufactured in the database, and the external appearance information of each abutment includes a connection shape, a margin length, , And the angle of inclination of the coupling part may be classified according to each specification, and an independent part number may be given.

In other words, the same part number is assigned to the abutment having the same specifications as the joint part shape, the length of the margin part, the length of the joint part, and the inclination angle of the joint part, and is stored as one appearance information. And stored.

At this time, if a solid or solid image 40 suitable for the inside of the subject's mouth is selected, the unique number of the solid or fixed image 40 can be extracted.

Then, the extracted unique number is compared with the association information included in the 3D contour information of each zone, and the abutment image having the extracted unique number as the association information can be extracted from the digital library 10 have.

In this case, if there is only one extracted abutment image, it is also possible that the extracted abutment image is directly placed in the three-dimensional integrated image 1 (s50). Referring to FIG. 4, if two or more abutment images are extracted All extracted abutment images may be displayed as a list 20.

Of course, if the number of abutment images extracted exceeds the predetermined number of available abutments, the list 20 may be composed of a list of the abutment image number of each abutment image, And an abutment image corresponding to the part number.

Here, it is preferable that the coupling linkage information is understood as a unique number of a fixed body having a coupling groove conformable to a standard of a coupling portion provided at a lower portion of each zone, And may be provided in the digital library 10 in advance.

Of course, the linkage information can be confirmed through the Internet, the product catalog of each manufacturer, the performed procedure, etc. using the unique number of the fixture, and the confirmed result is updated in the digital library 10 .

That is, when the unique number is extracted, one abutment or a plurality of abutment notes that can be combined with the selected fixed object 40 or the selected fixed object can be extracted.

For example, when the unique number is directly input in the fixture selection process, the inputted unique number is input to the digital library, and a plurality of abutment images and part numbers having the association information corresponding to the unique number can be extracted.

When the fixed body image is directly selected when the fixed body is selected, the unique number is extracted from the external shape information of the selected fixed body image and input to the digital library, and a plurality of abutment images or part numbers having the combination link information corresponding to the unique number Can be extracted.

At this time, by selecting one of the abutment images indicated by the list 20, it is possible to select an abutment which can be stably bonded to the selected fixture by the abutment suitable for the intraoral or restorative of the subject.

If the extracted abutment images are displayed as a list (s40), one of the abutment images is selected and placed virtually in the three-dimensional integrated image (1), and the peripheral teeth The outer surface profile 50b is set based on the arrangement of the abutment surface 3 and the actual prosthesis is manufactured on the basis of the prosthesis image 50 in which the mold half 50a is set according to the outline information of the abutment image 30 ).

At this time, when one of the abutment images 30, 30a, 30b and 30c indicated by the list 20 is clicked or a part number is inputted, the selected abutment image 30 is displayed on the fixed image 40, Dimensional integrated image (1) to be coupled to the top of the three-dimensional integrated image (1).

That is, the three-dimensional vector data of the abutment groove 40a of the fixed body image 40 and the three-dimensional vector data of the connecting portion 30c of the abutment image 30 are aligned so that the three- Dimensional coordinates of the abutment image 30 can be calculated. When the abutment image 30 is three-dimensionally moved according to the computed three-dimensional coordinates, the abutment image 30 can be appropriately selected using the visual image or vector data of the three- Can be determined.

The outer shape of the prosthesis suitable for the implant placement position 4 can be determined through the arrangement of the peripheral teeth 3 displayed on the three-dimensional integrated image 1.

That is, when the width, the length, and the masticating surface of the prosthesis are determined, the shape information of the prosthesis can be obtained as three-dimensional vector data, and the prosthodontic image 50 can be displayed on the three- .

In detail, the prosthesis image 50 has a width set according to the space between the peripheral teeth 3, and a length is set according to an interval between the implant placement position 4 and a tooth placed opposite to the implant placement position 4, 4), the external surface profile 50b can be determined.

At this time, the margin portion 30b of the abutment image may be disposed inside the gum 7, and the engaging portion 30a may be disposed inside the restoration image 50.

Preferably, the gum 7 and the prosthesis image 50 are displayed in a semi-transparent manner in the three-dimensional integrated image 1 so that the conformity of the prosthesis is first determined through a visual analysis.

5, each of the abutment images 30, 30a, 30b, and 30c is sequentially arranged in a virtual manner, and the prosthesis images 50, A step of extracting a minimum value of the distances calculated for the outer surface of the virtually placed abutment image from a plurality of reference points previously set on the outer surface of the abutment image, Wherein the one abutment image having the highest degree of deflection is highlighted so as to maximize the supporting force with respect to the actual prosthesis.

When the horizontal or vertical distance to the outer surface of one abutment image 30 virtually arranged to correspond to the fixed body image 40 at each of the reference points is calculated, .

At this time, the calculation direction of the distance is set in advance at each reference point. For example, the reference point may be set to four positions on the upper surface center, the left side, the right side, the right side, the front side, and the back side of the prosthesis image 50, .

Of course, the reference point and the distance calculation direction may be arbitrarily set by the practitioner, and the set contents are preferably applied to other abutment images extracted by the list 20. [

That is, the degree of flatness is set to a minimum value among the distances calculated for five abutment images with respect to one abutment abutment image, and the same procedure is repeated for the abutment abutment images extracted by the list 20, have.

Herein, the degree of deflection means a portion where the interval between the prosthesis image and abutment image is the narrowest with respect to each reference point, and the degree of deflection is low means that there is an excessively thin portion between the prosthesis and the abutment And a high degree of deflection means that a sufficient thickness is guaranteed between the prosthesis and the abutment.

At this time, the set deflection degree is preferably displayed in the list 20. Of course, in the process of setting and displaying the degree of deflection, a plurality of abutment images may be extracted and displayed as a list 20, and the abutment images may be automatically performed on the abutment images of the list 20, It is also possible that an abutment image is performed as it is clicked.

Then, if all the degrees of deflection for the abutment images shown in the list 20 are calculated, the abutment images having the highest degree of deflection can be highlighted. In this case, it is preferable that the highlighted display means that the part number or image displayed in the list 20 is blinked or converted into the highlight color.

Accordingly, it is possible to easily grasp whether each of the abutments is disposed close to the center of the prosthesis, whether the one side of the prosthesis is not excessively thin, and a region where the bearing force of the prosthesis is maximized can be easily and quickly selected .

In other words, by presenting the degree of deflection as a standard of restoring force of the prosthesis, by selecting the abutment, it is possible to minimize crack damage of the prosthesis during chewing, which is caused by excessive deflection of the abutment of the abutment joint in the interior of the prosthesis, The abutment stock can be accurately selected and the perfection of the implant procedure can be improved.

30a, 30b, and 30c of the extracted list 20 are compared with each other because the marginal length, the length of the coupling portion, the inclination angle of the coupling portion, , It is possible to select a region where the bearing capacity of the prosthesis is maximized while using the abutment abutment.

Of course, in the case where all deflection degrees calculated from each abutment image are less than the tolerance interval to be described later, it is also possible to repeat the above-mentioned process by reselecting the fixture.

When the abutment surface image 30 is selected and arranged in a virtual arrangement, an external profile 50b is set based on the arrangement of the peripheral teeth 3 displayed in the three-dimensional integrated image 1, A physical prosthesis is manufactured on the basis of the prosthesis image 50 in which the mold-fitting portion 50a is set according to the information (s50).

At this time, the outer profile 50b of the prosthesis image 50 is set according to the arrangement of the peripheral teeth 3 shown in the three-dimensional integrated image 1 and the tooth creation surface facing the implant placement position 4 .

The protruding portion 50a is a portion formed at one side of the prosthesis, into which the engaging portion 30a is inserted and coupled to the dental prosthesis.

At this time, the edge side end of the fused portion 50a of the prosthesis is preferably formed to fit on the upper surface of the margin portion 30b, so that foreign material penetration between the prosthesis and the abutment and the lateral flow of the prosthesis are prevented, More preferably, the outer surface connected to the rim of the mold half 50a is continuous with the outer surface of the margin 30b.

An adhesive material for fixing the prosthesis is inserted between the inner surface of the mold portion 50a of the prosthesis and the outer surface of the abutment caulking portion 30a and the fitting portion 50a of the prosthesis is inserted It is preferable to have a constant tolerance with the outer surface of the engaging portion. That is, if the tolerances are uniform, the prosthesis and the abutment can be firmly coupled.

In this case, the step 50 of setting the mold 50a of the prosthesis image 50 is a step of calculating the overlap between the abutment image 30 and the prosthesis image 50, Dimensional solid coordinate corresponding to a range from the mold-fitting portion 50a to the outer surface profile 50b of the prosthesis image 50, the step of setting the mold- And design information of the prosthesis is calculated.

That is, the outer profile 50b of the prosthesis image 50 includes an arrangement of the peripheral teeth 3 with reference to the implant placement position 4 at the time of acquiring the three-dimensional integrated image 1, ) Of the teeth facing the tooth surface.

The three-dimensional solid coordinate corresponding to the inside of the predetermined outer profile 50b from the top of the gum 7 displayed on the three-dimensional integrated image 1 may be set as the primary restoration image. Here, the term " solid coordinate " is understood to mean coordinates filled in a space corresponding to the inside of the outer surface profile from the upper part of the gum.

At this time, an overlapped portion between the set primary restoration image and the abutment root image is calculated. In this case, the overlapped portion is an overlapped coordinate between the three-dimensional coordinates of the abutment image 30 and the three-dimensional coordinates of the primary restoration image, and a portion corresponding to the engaging portion 30a in the abutment image 30 can be extracted have.

When the overlapping portion is calculated, the mold half 50a is set in accordance with the predetermined tolerance interval from the outer profile of the overlapping portion, and between the outer profile of the image of the first set prosthesis from the outer profile of the mold half 50a 3D solid coordinates can be calculated as the design information of the real prosthesis.

When the physical prosthesis is manufactured according to the calculated design information, the physical abutment selected in accordance with the part number, the physical fixture selected according to the unique number, and the surge Curl guides can be delivered to individual dentists.

Thus, since the preformed three-dimensional shape information of the prepared fixture and the abutment is classified according to the manufacturer and the standard and prepared as a digital library, if the implant placement position is determined in the three-dimensional integrated image, the fixture, abdomen, And can be shipped, so that rapid and efficient procedures can be performed without troublesome procedures such as additional visits for acquiring a dentist impression.

In addition, when the existing fixed body is selected, the existing stockyard stock that can be coupled to the selected fixed body can be quickly extracted and disposed by virtue of the unique number and the linkage information of the digital library, and the virtual layout- The use of a direct connection to the design of the mold of a fast and high precision prosthesis can be manufactured.

Moreover, since the abutment is selected so that the abutment can be accurately fastened to the abutment, and the abutment of the abutment is designed based on the state in which the abutment and abutment are virtually disposed and placed inside the abutment of the subject, It is possible to improve the precision of the procedure by improving the bonding consistency between the fixture, the abutment and the prosthesis.

Meanwhile, as shown in FIG. 6, the CT scan image and the oral scan image may be obtained in a state where the real part of the image is placed inside the oral cavity of the subject.

In this case, the abutment image is extracted and fictitiously arranged (step s50). The abutment image 30 is extracted from the digital library according to the extracted part number, And the virtual abutment image 30d displayed on the dimensionally integrated image 1a.

That is, when the part number of the physical part is confirmed, the corresponding abutment image 30 can be extracted from the digital library 10 through the part number.

At this time, the abutment image 30 is matched to the feature of the abutment image 30 based on the feature of the physical abutment image 30d displayed on the three-dimensional integrated image 1a, It can be placed virtually.

In this way, even if the real-scene image 30d acquired through the oral scan or the CT image is unclear, accurate piece-of-sight information can be extracted from the digital library according to the part number Therefore, the molded part of the prosthesis can be accurately set through the extracted external information, and the precision of the procedure can be remarkably improved.

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

1.1a: 3D integrated image 2: alveolar bone
3: Peripheral teeth 4: Implant placement position
7: Gum 10: Digital Library
30: abutment image 40: solid image
50: prosthetic image

Claims (5)

A first step of acquiring three-dimensional outline information of a plurality of prepared abutment stocks, preparing a digital library, and acquiring a CT shot image and an oral scan image of the inside of the subject's mouth;
A second step in which the CT shot image and the ORAL scan image are matched to obtain a three-dimensional integrated image;
A third step in which the solid body image is disposed in the three-dimensional integrated image so as to correspond to the inside of the mouth of the subject;
A fourth step of extracting at least one abutment image corresponding to a unique number of the fixed body image from the digital library and displaying the extracted abutment image as a list; And
Wherein an external profile is set based on the arrangement of the peripheral teeth displayed in the three-dimensional integrated image, and based on the external information of the abutment image, based on the prosthesis image in which the mold- A fifth step in which a physical prosthesis is manufactured,
The fifth step
Wherein the abutment portion between the abutment surface image and the prosthesis image is calculated, the mold abutment portion being set according to a predetermined tolerance interval from the calculated outer profile of the superimposition portion,
And calculating design information of the physical prosthesis according to three-dimensional solid coordinates corresponding to a range from the mold-fitted portion to the outer surface profile of the prosthesis image. The method according to claim 1,
The fourth step
Extracting a unique number of the still image,
At least one from the digital library according to the coupling association information predefined for each of the three-dimensional contour information of each of the regions, so as to indicate at least one fixed body unique number having an engaging groove that is matched with the coupling portion provided at the lower portion of each of the above- Wherein the abutment image of the dental implant is extracted using the digital library. The method according to claim 1,
The first step
And a step of assigning a unique number to the three-dimensional outer shape information obtained for the plurality of fixtures manufactured and stored in the digital library. delete The method according to claim 1,
The fifth step
The extracted abutment images are sequentially arranged in a virtual manner so that a minimum value among the distances calculated for the outer surface of the abutment image from the predetermined plurality of reference points on the outer surface of the prosthesis image is extracted and set as a deflection Step,
Wherein the abutment of each abutment image is sequentially compared with the deflection of the abutment abutment image and the one abutment abutment image having the highest degree of deflection is highlighted so that the bearing force of the abutment object is maximized Method for manufacturing prosthesis for dental implants using digital library.

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