KR100912271B1 - One body abutment with crown of implant and method for manufacturing the one body abutment - Google Patents

Abstract

A crown integrated abutment and a manufacturing method for the same are provided, which simplify the manufacture process of the abutment and reduce the manufacture cost and time. A crown integrated abutment manufacturing method comprises: a step(S12) for processing the ceramic block and making the first preliminary block; a step(S13) for 3D modeling the tooth; a step(S18) for modeling the core unit(S15) combined with the implant fixture and the porcelain part forming the outlook of the artificial tooth at the core unit outside; a step(S17) for forming the core unit by sintering the first preliminary block; a step(S19) for forming the block body of the porcelain part; a step(S20) for binding the core unit and the block body of the porcelain part; and a step(S21) for forming the crown integrated abutment.

Description

ONE BODY ABUTMENT WITH CROWN OF IMPLANT AND METHOD FOR MANUFACTURING THE ONE BODY ABUTMENT}

The present invention relates to an implant, and relates to a crown-integrated abutment in which the crown and the abutment are integrally formed in the abutment connecting the implant and the crown constituting the artificial tooth, and a method of manufacturing the same.

Dental implant (dental implant) means an artificial tooth structure or a method of implantation in place of the teeth partially or entirely replace the teeth. Types of implants include bridge type dental implants and crown type dental implants. A bridge type implant is to treat a prosthesis formed integrally by connecting two or more artificial teeth adjacent to each other, and a crown type implant to treat a prosthesis in the form of an artificial tooth.

Implants generally consist of implant fixtures made of titanium and abutments and artificial teeth such as crowns or prosthesis. The implant fixture is placed in the jawbone of the patient to act as a root and the crown is formed to be the same or similar to the shape and color of the missing tooth and form the shape of an artificial tooth. The abutment anchors the crown to the implant fixture and transfers the load from the crown to the implant fixture and the jawbone.

Existing abutment manufacturing methods include casting (for example, wax build-up), using ready-made products, or build-up using ceramics such as zirconia.

Because the ready-made abutment does not reflect the oral structure of each patient at all, cutting the abutment to the patient before inserting the crown after inserting the implant fixture is not only difficult, but also the procedure time. This takes a lot and there is a problem causing fear of the patient.

There was a problem that the casting abutment caused a gap between the abutment and the gum due to the error between the mold and the final finished abutment, food was caught in the gap, causing tooth decay or feeling of heterogeneity. In addition, the abutment of the casting method uses titanium as the part fastened to the implant fixture to secure strength and biocompatibility, and gold is used as the part fastened to the crown. There was a problem that the economic burden is increased due to the use of metal. In addition, the existing casting method has a problem that the production time is long and mass production is impossible to produce the abutment.

On the other hand, the abutment made of titanium has the advantage of non-toxicity, good biocompatibility, and sufficient mechanical strength. have. In order to solve this problem, a method of forming an opaque layer for preventing the abutment from shining inside the artificial tooth has been proposed, but the problem of discoloration due to the abutment being reflected near the gum remains unresolved.

In recent years, with increasing interest in aesthetics, it has been replaced by ceramics that have excellent biocompatibility and similar tooth color instead of metals. However, the conventional abutment of the ceramic material has a problem in that processing is difficult because of the high brittleness and hardness of the ceramic. In particular, the existing ceramic abutment also needs to mechanically process the upper portion of the ceramic abutment according to the characteristics of the patient after the implant fixture is inserted, there is a problem that the hardness of the ceramic is very difficult to process. In addition, the ceramic abutment is inserted into the implant fixture, and a crown or bridge is manufactured to be bonded to the ceramic abutment. Since the structure of the ceramic abutment is formed of a plurality of structures, strength degradation or destruction may occur between the structures. There is a structural problem that can be. In addition, the existing ceramic abutment has many manufacturing steps, there is a problem that requires a lot of manufacturing cost and time.

An object of the present invention for solving the above problems is to provide a method for manufacturing a ceramic rent column that can simplify the production step of the rent column and solve the structural problem.

In addition, the present invention is to provide a method for manufacturing a ceramic rent column that can reduce the production cost and shorten the time.

In addition, the present invention is to provide a tailor-made abutment and a method of manufacturing the same to be produced for each individual.

In addition, the present invention is to provide a ceramic abutment and a method of manufacturing the same that can solve the structural problems of the existing ceramic abutment and secure the strength.

In addition, the present invention is to provide abutment excellent in aesthetic effect and formed of zirconia material.

According to the embodiments of the present invention for achieving the above object of the present invention, the crown-integrated abutment manufacturing method comprises the steps of fabricating the first preliminary block body by processing the zirconia block, 3D modeling the teeth, the tooth 3D Modeling the core part to be coupled to the implant fixture in the model and the porcelain part forming the appearance of an artificial tooth outside the core part, respectively, forming a core part by processing and sintering a first preliminary block body using the core part model. And forming a porcelain unit block body using the porcelain unit model, and combining the core unit and the porcelain unit block body and injecting porcelain into the porcelain unit block body to form a crown-integrated abutment. It is configured by.

In an embodiment, the first preliminary block body may be formed using a zirconia block in a state before sintering. In particular, the first preliminary block body includes a body part for processing the core part and a connection part to be fastened with the implant fixture, and the body part and the connection part are integrally formed. In addition, in consideration of the volume reduction amount of the zirconia block during the sintering process, the core part model is preferably formed to have a volume increased by 20 to 30% relative to the volume of the core part to be finally formed.

In an embodiment, the porcelain block may be formed of a plastic material. In particular, the porcelain block has a shell shape that provides an interior space corresponding to the appearance of the artificial tooth so that the porcelain can be filled therein.

In an embodiment, after performing the porcelain injection step, the step of building up the stain or porcelain powder on the crown integral abutment surface to make the surface of the crown integral abutment as close as possible to the texture and color of the natural tooth. You can do more.

On the other hand, according to another embodiment of the present invention for achieving the above object of the present invention, in the abutment of the implant to form an artificial tooth, the core portion and the core coupled to the implant fixture and formed of a zirconia material It is integrally formed on the outside of the part to form the appearance of artificial teeth and comprises a porcelain portion formed of porcelain (porcelain) material, the porcelain portion is formed by injection molding the porcelain to the outside of the core portion.

In an embodiment, the implant fixture and the crown integral abutment are coupled by a fastening member, and a fastening hole penetrating the crown integral abutment is formed to receive and fasten the fastening member. Here, the fastening hole is formed through the core portion and the porcelain portion so as to be exposed to the outside of the porcelain portion. And it is preferable that the fastening hole is closed after the crown-integrated abutment is fastened to the implant fixture.

As described above, according to the present invention, first, by simplifying the structure of the rent by forming the crown and the abutment integrally, when compared with the conventional method of manufacturing and combining the crown and the abutment respectively, the time and This can reduce costs.

In addition, since the crown and the abutment are integrally formed, it prevents structural problems from occurring between the structures, and has excellent advantages in the esthetics and strength characteristics of the final tooth formed.

Third, the abutment is designed and manufactured through 3D modeling using CAD / CAM in consideration of all surrounding teeth and antagonisms, so that a custom abutment reflecting the oral structure of each patient can be manufactured.

Fourth, because the modeling and manufacturing using a computer can produce a high precision abutment, it can prevent and close the gap between the gum and artificial teeth after the procedure.

In addition, the computer can be used to produce the same product at the time of re-production using the data from the first production, and in the re-production stage can be effectively reduced production time and cost to be able to produce without a modeling step.

Although the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, the present invention is not limited or restricted by the embodiments.

Referring to FIG. 1, an implant (dental implant) according to an embodiment of the present invention is an implant fixture 101 which is an artificial tooth that replaces a lost tooth and an artificial tooth that supports an artificial tooth by being placed in an alveolar bone 1 of a patient. In particular, the artificial tooth is made of a crown integral abutment 102 formed integrally with the core portion 121 serving as abutment and the porcelain portion 122 forming the appearance of the artificial tooth.

Hereinafter, the crown integral abutment 102 for replacing the molar will be described as an example, and the form of the present invention is not limited to the drawings, and the structure and manufacturing method of the crown integral abutment 102 according to the present invention are different from each other. Equally applicable to the crown integral abutment instead of the.

The porcelain portion 122 is formed of porcelain (porcelain) material in order to form the color and transparency of the artificial tooth similar to the natural tooth and has an appearance form that can be meshed with the adjacent teeth and antagonist teeth.

The core part 121 is formed of a partially stabilized zirconia material, and supports the porcelain part 122 to transmit a load acting on the artificial tooth to the implant fixture 101.

Here, the crown integral abutment 102 is coupled to the implant fixture 101 by using a fastening member 103 in the form of a screw, and the fastening member 103 is inserted through the crown integral abutment 102. The fastening hole 123 to be coupled is formed. In particular, the fastening hole 123 is formed to penetrate the central portion of the crown integral abutment 102 and is exposed to the outside of the crown integral abutment 102, so that the crown integral abutment is inserted into the implant fixture 101. It is easy to fasten the procedure and there is an advantage that can shorten the procedure time. In addition, the fastening member 103 formed as a separate object from the crown integral abutment 102 is simultaneously fastened to the crown integral abutment 102 and the implant fixture 101 and the fastening in the fastening hole 123. Since the member 103 is accommodated, a load repeatedly acting on the crown-integrated abutment 102 can be prevented from being directly transmitted to the fastening member 103, and the screw loosening phenomenon of the fastening member 103 can be suppressed. have.

For example, a screw thread to which the fastening member 103 is fastened is formed on the whole or part of the inner surface of the fastening hole 123, and the thread to which the fastening member 103 is fastened to the inside of the implant fixture 101. In this case, the crown integral abutment 102 and the implant fixture 101 are simultaneously fastened by the fastening member 103.

The crown integral abutment 102 is an implant connection portion of the lower end portion of the crown integral abutment 102 is inserted into the implant fixture 101 in order to improve coupling and holding force with the implant fixture 101 ( 124 is formed. In addition, a screw thread to which the fastening member 103 is fastened may be formed in a part of the fastening hole 123 penetrating the implant connection part 124. In addition, the portion in which the crown-integrated abutment 102 is inserted into the patient's gum 2 is formed with a tapered portion 125 inclined at a predetermined angle in consideration of coupling to the gum 2.

However, the present invention is not limited thereto, and the presence and absence of the implant connection part 124 and the taper part 125 may be changed in various ways.

According to the present invention, the crown-integrated abutment 102 is integrally formed with the core portion 121, the implant connecting portion 124, and the tapered portion 125. That is, the implant fixture 101 is placed in the alveolar bone 1 of the patient and the crown-integrated abutment 102 is mounted on the implant fixture 101, and then the fastening member 103 is fastened to perform implantation. Is completed. Therefore, the structure of the implant and abutment can be simple and the procedure time can be shortened, and the abutment formed of one structure has an advantage of preventing structural problems and a decrease in strength.

Meanwhile, the crown-integrated abutment 102 fabricates the core portion 121 by processing a zirconia block using a CAD / CAM, and injects porcelain into the core portion 121 to form the core. The unit 121 and the porcelain unit 122 are integrally formed.

Hereinafter, with reference to Figures 2 to 10 will be described in detail with respect to the crown-integrated abutment manufacturing method according to an embodiment of the present invention. For reference, FIG. 2 is a flowchart illustrating a method for fabricating a crown integrated abutment according to an embodiment of the present invention, and FIGS. 3 to 10 are views corresponding to each step of the method for fabricating a crown integral abutment of FIG. Description of the drawings will be described with reference to the drawings.

First, an implant performed on a patient is modeled (S11), and a first preliminary block body 30 is manufactured (S12).

The first preliminary block body 30 may be individually manufactured as a base block for manufacturing the crown-integrated abutment 102 for each patient, but may also be manufactured in a standardized form. When standardizing and manufacturing the first preliminary block body 30, the first preliminary block body having a form that can be coupled to the implant fixture 101 of the patient by omitting the implant modeling step (S11) is manufactured. Replaced by providing 30.

Here, the first preliminary block body 30 is a fastening hole penetrating the first preliminary block body 30 so as to correspond to the final shape of the core part 121 as a part to be processed by the core part 121 ( 33) and a preliminary connecting portion 34 and a preliminary tapered portion 35 are formed. In particular, the first preliminary block body 30 is formed integrally with the implant connecting portion 124 to be coupled to the implant fixture (101). For example, the first preliminary block body 30 has a relatively simple shape to enable mass production.

5 is a perspective view of a first preliminary block body 30 according to an embodiment of the present invention. As shown in FIG. 5, the first preliminary block body 30 has a cylindrical body 31. It can have

On the other hand, the first preliminary block body 30 has a predetermined volume to form the molar teeth, and has a cylindrical body 31 for the convenience of manufacturing, the present invention is not limited by the drawings, The shape of the body 31 of the first preliminary block body 30 may also be changed in various ways according to the shape of teeth such as a canine or an incisor. In addition, it will be possible to standardize and manufacture the first preliminary block body 30 for forming each tooth.

The first preliminary block body 30 is sintered from a zirconia material and is sintered in a green state or partially. Here, the first preliminary block body 30 may be formed by completely sintering, but since the hardness of the fully sintered zirconia block is high, it is difficult to process it. It is preferable to sinter. In the subsequent step, the core part 121 is processed and finally sintered. In the case of the green zirconia block, the volume of about 20 to 30% is reduced in the final sintering step, so that the first preliminary block body 30 ) Is preferably manufactured to have a sufficient volume in consideration of the processing margin and sintering margin of the core portion 121.

Next, 3D modeling of teeth to form artificial teeth (S13). For reference, FIG. 3 is a cross-sectional view for explaining an embodiment of an analog for 3D scanning for 3D modeling of teeth, and FIG. 4 is an artificial tooth modeled using the analog of FIG. 3 and an oral cavity of a patient. It is a perspective view showing an example of a 3D model.

Referring to FIG. 3, an analog 11 is mounted on an implant fixture 101 installed on an alveolar bone 1 of a patient, and the patient, such as a jawbone, an adjacent tooth and an opposing tooth of the patient, is mounted by 3D scanning of the analog 11. Acquire oral information of, and as shown in Figure 4, can be configured as a 3D image. In addition, an optimized shape of the tooth 3D model 10 may be modeled in consideration of the relationship between adjacent teeth and antagonists from the 3D oral cavity image of the patient obtained as described above.

Next, a cutback model 20 for forming the crown integral abutment 102 is modeled in the modeled tooth 3D model (S14). The cutback model 20 is modeled by separating the core part model 21 (S15) for forming the core part 121 and the porcelain part model 22 (S19) for forming the porcelain part 122. do. 6 is an exploded perspective view of the cutback model 20 for producing the crown-integrated abutment 102 of the present invention, which is an exploded perspective view of the core part model 21 and the porcelain part model 22.

The porcelain part model 22 has the appearance shape of the optimized artificial tooth modeled in the tooth 3D model 10 and is a model for the part where porcelain is to be veneered. In addition, the porcelain part model 22 has a fastening hole 23b penetrating through the porcelain part model 22 to form a fastening hole 123 in the crown-integrated abutment 102.

The core part model 21 has a predetermined shape for forming the core part 121. For example, the core part model 21 has a circumferential shape having a predetermined diameter, and the tooth 3D model ( The middle part may have a convex shape to the outside so as to correspond to 10). In particular, the core part model 21 has a simple shape for convenience of processing and securing the strength of the core part 121. However, the shape of the core part 121 is not limited by the drawings, and the core part 121 may have a curved or uneven surface shape to correspond to the appearance of the artificial tooth. In addition, the core part 121 may have an appearance shape that is approximately similar to that of the tooth 3D model 10 so that the thickness of the porcelain part 122 may be relatively constant.

Here, since the core part model 21 is a model for processing the first preliminary block body 30, the implant connection part 24 and the taper part 25 are formed to correspond to the first preliminary block body 30. The fastening hole 23a is formed through the core part model 21.

Next, the second preliminary block body 40 is manufactured by milling the first preliminary block body 30 using the core part model 21 (S16), and the second preliminary block body 40 is obtained. Sintering to produce the core portion 121 (S17). For reference, FIG. 7 is a perspective view of the second preliminary block body 40 manufactured through the second preliminary block body manufacturing step S17. The convex body 41, the implant connection part 124, and the taper are shown. It has a portion 125 and a fastening hole 123.

The second preliminary block body 40 may be manufactured by milling the first preliminary block body 30 using a CAD / CAM system, and the second preliminary block body 40 is sintered at a sintering temperature of zirconia. As a result, the core part 121 having the maximum density and the hardness can be manufactured.

Here, since the first preliminary block body 30 in the green state is reduced in volume by 20 to 30% in the sintering step, the second preliminary block body 40 is manufactured in consideration of the volume to be reduced in the sintering step. .

Next, the porcelain unit block body 50 is produced using the porcelain unit model 22 (S20).

Since the porcelain unit 122 is formed by injection molding porcelain in the core unit 121, the porcelain unit block body 50 is combined with the core unit 121 to form porcelain outside the core unit 121. It has a shell form for injection. For example, the porcelain unit block body 50 may be manufactured by processing a plastic block.

8 is a cross-sectional view of the porcelain unit block body 50 manufactured through the porcelain unit manufacturing step (S20). As shown in FIG. 8, the porcelain unit block body 50 has the porcelain unit 122 therein. In the form of a shell 51 having a predetermined internal space into which porcelain can be filled. An injection hole 52 for filling porcelain into the shell 51 is formed at one side of the shell 51, and a fastening hole 53 for forming the fastening hole 123 is formed in the shell 51. Is formed. In particular, the inner surface of the shell 51 has a surface shape for forming the outer surface of the porcelain portion 122.

However, the porcelain unit block body 50 is not limited by the drawings, and the porcelain unit block body 50 may inject the porcelain into the core unit 121 to form the porcelain unit 122. It may have various forms.

Next, the core portion 121 and the porcelain unit block body 50 are combined (S21), and the porcelain injecting porcelain into the porcelain unit block body 50 forms a crown-integrated abutment 102 (S22). ).

9 is a cross-sectional view for explaining the step of coupling the core portion 121 and the porcelain unit block body 50 and injecting porcelain, as shown in FIG. 9, the porcelain unit inside the mold 60. The block body 50 and the core part 121 are accommodated, and the porcelain in the shell 51 is connected by connecting the injection port 52 of the shell 50 and the porcelain injection part 62 of the mold 60. Fill (61). Porcelain 61 filled in the shell 51 is coupled to the core portion 121 to form the porcelain portion 122 integrally with the core portion 121.

Here, the porcelain unit block 50 is coupled to the core 121 and the porcelain unit block 50 while the fastening hole 53 is inserted into the fastening hole 123 of the core 121. Can be. Or it may be further provided with a fixing structure (not shown) for fixing the core portion 121 and the shell 51 at one side of the porcelain unit block body 50.

10 is a perspective view of the crown-integrated abutment 102 produced by the above-described method for manufacturing a crown abutment.

Here, after the porcelain injection (S22) is completed, to form a stain or porcelain powder on the surface of the porcelain portion 122 to form the color and texture of the crown integrated abutment 102 more similar to natural teeth. It can be up (S23).

According to the present invention, by injecting the porcelain 61 can form a crown-integrated abutment 102 formed integrally with the porcelain portion 122 and the core portion 121, the surface of the existing porcelain powder artificial tooth Compared to the method of applying and sintering, it is possible to save time and cost, and to improve the bonding force between the porcelain unit 122 and the core unit 121.

In addition, the conventional method of applying porcelain is difficult to form the appearance of the artificial tooth so that it can mesh well with the antagonist teeth, the accuracy of the finished artificial tooth is poor, so that the occlusion between the antagonist teeth and the gap between the artificial tooth and the gum Although there was a problem, according to the present invention, it is possible to precisely manufacture the porcelain unit block body 50 according to the shape of an optimized artificial tooth modeled in CAD / CAM, and the porcelain unit block body 50 due to the nature of the injection molding method. By implementing exactly) has the advantage of forming the porcelain portion 122. Therefore, the crown-integrated abutment 102, which is finally completed, can be accurately engaged with adjacent teeth and opposing teeth, has excellent aesthetics, and has excellent coupling force between the porcelain portion 122 and the core portion 121, thereby providing the crown integral abutment. The strength characteristic of 102 has the outstanding characteristic.

The crown integral abutment 102 according to the present invention and the fabrication price and time of the existing abutment were compared in Table 1 and Table 2.

price Rent prices Crown price Sum Domestic ceramic rent 150,000 won 150,000 won 300,000 won Imported Ceramic Rent 35 ~ 500,000 won 150,000 won 50 ~ 650,000 won Crown Integral Rent 150,000 won 150,000 won

time Model making and abutment processing Crown making (design and porcelain work) Sum Domestic and imported landlords 2 days 5 days 7 days or more Crown Integral Rent 1 day 1 day 2 days

As can be seen in Table 1 and Table 2, since the crown-integrated abutment 102 according to the present invention forms a crown and abutment integrally, the cost can be saved by more than 50% compared to the method of manufacturing and combining the existing abutment and the crown respectively. And, the production time also has the advantage that can be reduced to less than 30%.

Next, a brief description will be given of a method of performing the crown integrated abutment 102 to the patient.

The crown-integrated abutment 102 and the implant fixture 101 are mounted by mounting the crown abutment 102 on the implant fixture 101 and fastening the fastening member 103 through the fastening hole 123. Is combined. In particular, the crown integral abutment 102 is formed so that the fastening hole 123 is exposed on the surface of the porcelain portion 122, so that the fastening member 103 is easily outside the crown integral abutment 102. Can be tightened.

Here, after the procedure of the crown-integrated abutment 102 is completed, it is necessary to conceal the fastening hole 123. That is, by filling a predetermined filler (not shown) inside the fastening hole 123 and closing the fastening hole 123 from the outside, the fastening hole 123 is exposed outside the crown-integrated abutment 102. To improve the aesthetics. In addition, concealing the fastening hole 123, in addition to the aesthetic reason, to prevent foreign matter from entering into the fastening hole 123 through the fastening hole 123, the crown abutment 102 and the It is preferable to implement in order to prevent weakening of the bond between the implant fixture 101 and to prevent contamination of the inside of the implant and the alveolar bone 1.

Meanwhile, in the above-described embodiment, the crown integrated abutment 102 of one artificial tooth type and a manufacturing method thereof have been described, but it may be possible to form a bridge integrated crown abutment having a form in which two or more artificial teeth are connected to each other. will be.

The bridge-integrated abutment in the form of a bridge (hereinafter referred to as a bridge-shaped abutment) has a structure substantially the same as that of the crown-integrated abutment 102 according to the above-described embodiment, except that two or more artificial teeth are connected to each other and the implant There is a slight difference in that it is fastened to the fixture at one or more positions.

In this case, the abutment (hereinafter referred to as the first abutment) at the position where the abutment fixture is fastened in the bridge-shaped abutment has a shape substantially the same as that of the crown-integrated abutment described above. That is, the first abutment is formed in the same as the crown-integrated abutment 102, the core portion is formed by milling the zirconia block and sintered, and the porcelain portion is integrally formed by injection molding the porcelain outside the core portion. In addition, the abutment (hereinafter referred to as a second abutment) at a position where the implant fixture is not fastened does not have a fastening hole to which the connection part and the fastening member are fastened to the implant fixture. For example, the second abutment may inject porcelain to form a tooth-shaped appearance. In addition, the second abutment may also be provided with a core part processed and sintered zirconia blocks therein to secure strength.

The method of manufacturing the bridge abutment is substantially the same as the manufacturing method of the crown-integrated abutment 102 described above. However, in order to manufacture a bridge-shaped abutment, after modeling the tooth of the bridge-shaped abutment, the model is separated according to the number of artificial teeth, and the core part is individually processed and sintered for each abutment. It can be formed by combining the individually formed core portions when injecting. Therefore, the bridge-shaped abutment model requires a separate model for each abutment and a model connected in the form of a bridge, and in particular, the porcelain block body for injecting the porcelain is formed in a form capable of connecting the abutments.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is a cross-sectional view showing a state in which the integrated crown abutment according to an embodiment of the present invention is mounted;

Figure 2 is a flow chart for explaining a method for manufacturing a crown integral abutment according to an embodiment of the present invention;

3 is a cross-sectional view for explaining an embodiment of an analog for 3D modeling of teeth in the crown-integrated abutment manufacturing method of FIG.

4 is a perspective view of a tooth 3D model modeled by the crown-integrated abutment manufacturing method of FIG.

5 is a perspective view of a first preliminary block body for the manufacture of a crown integral abutment according to an embodiment of the present invention;

6 is an exploded perspective view of the core model and the porcelain model as a cutback model modeled by the crown-integrated abutment manufacturing method of FIG.

7 is a perspective view of a second preliminary block body formed using the core model of FIG. 6;

8 is a cross-sectional view of the porcelain unit block body formed by using the porcelain unit model of FIG. 6;

FIG. 9 is a cross-sectional view for explaining a method of manufacturing a porcelain unit by injecting and molding a porcelain by combining a core unit and a porcelain unit block body; FIG.

10 is a perspective view of the crown-integrated rent column produced in FIG.

<Description of the symbols for the main parts of the drawings>

1: alveolar bone 2: gum

10: Tooth 3D Model 11: Analog for Scanning

20: cutback model 21: core part model

22: porcelain model 23a, 23b: fastening hole

24: implant connection 25: taper

30: first preliminary block 31: body

33: fastening hole 34: preliminary connection

35: preliminary tapered portion 40: second preliminary block body

41: body 50: porcelain block

51: shell 52: injection hole

53: fastening hole 60, 240: mold

61: porcelain 62: porcelain inlet

100: implant 101: implant fixture

102: integral crown abutment 103: fastening member

121: core portion 122: porcelain portion

123: fastening hole 124: implant connection

125: tapered portion

Claims (12)

Processing the ceramic block to produce a first preliminary block body; 3D modeling the tooth; Modeling the core part to be coupled to the implant fixture in the tooth 3D model and the porcelain part forming the appearance of an artificial tooth outside the core part; Forming a core part by processing and sintering a first preliminary block body using the core part model; Forming a porcelain unit block body using the porcelain unit model; And Coupling the core part with the porcelain part block and injecting porcelain into the porcelain part block to form a crown-integrated abutment; Crown integrated abutment manufacturing method comprising a. The method of claim 1, The first preliminary block body is a crown-integrated abutment manufacturing method, characterized in that formed using a ceramic block in the state before sintering. The method of claim 2, The first preliminary block body is a crown integral abutment manufacturing method comprising a body portion for processing the core portion and a connecting portion to be fastened with the implant fixture, the body portion and the connecting portion is formed integrally. The method of claim 3, The first preliminary block body is a crown-integrated abutment manufacturing method characterized in that the connecting portion to be fastened with the implant fixture is formed to fit the fixture. The method of claim 1, The core part model is a crown-integrated abutment manufacturing method characterized in that the core portion to be formed to have a 20 to 30% increase in volume compared to the volume. The method of claim 1, The porcelain unit block body is a crown-integrated abutment manufacturing method characterized in that formed of a plastic material. The method of claim 6, The porcelain unit block body is a crown integral abutment manufacturing method characterized in that it has a shell shape to provide an internal space corresponding to the appearance of the artificial tooth so that the porcelain can be filled therein. The method of claim 1, And a step of building up the stain or porcelain powder on the crown integral abutment surface after performing the porcelain injection step. delete delete delete delete

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