Multi-unit dental implant

Abstract

The present invention relates to a multi-unit dental implant by which a plurality of fixtures are placed in the alveolar bone of an edentulous patient, a plurality of lower abutments are connected to each other by using a framework made of titanium in a state in which the lower abutments are coupled to respective fixtures, and a plurality of prostheses are coupled to the framework, and thus strength, stability and ease of attachment / detachment can be improved.

Description

Multi-unit dental implant

[0001] The present invention relates to a dental implant, and more specifically, to a multi-unit dental implant capable of performing a procedure in which a plurality of fixtures are implanted in the alveolar bone of an edentulous patient, a plurality of lower abutments are connected using a titanium framework while a plurality of lower abutments are attached to each of the plurality of fixtures, and a plurality of prosthetics are attached to the framework.

[0002] Dentures refer to prosthetics equipped with artificial teeth. They can be classified into partial dentures and full dentures; partial dentures are used when only a portion of natural teeth are missing, while full dentures are used when there are no remaining natural teeth in the upper or lower jaw.

[0003] Recently, a method of attaching and detaching dentures by implanting artificial tooth roots has been applied, and Korean registered patent No. 10-1861165 discloses a denture coupling device for connecting a denture and an abutment.

[0004] These conventional dentures have wide resin flanges that support the prosthesis, which leads to a high frequency of food getting trapped and a shortened lifespan of the fixture.

[0005] In addition, conventional dentures are difficult to level, which makes the procedure complex and time-consuming.

[0006] The present invention aims to solve the aforementioned problems, and the objective of the present invention is to provide a multi-unit dental implant that can prevent food impaction occurring in conventional dentures and allows for easy attachment and detachment of the prosthesis.

[0007] A multi-unit dental implant according to the present invention for achieving the above-mentioned purpose may comprise: a plurality of fixtures that are implanted and fixed in the alveolar bone and have an abutment coupling hole formed to communicate upwardly with a female screw groove having a screw thread formed on its inner surface; a plurality of lower abutments coupled to the upper part of the fixtures, having a lower fastening hole formed to penetrate in the vertical direction and communicating with the abutment coupling hole of the plurality of fixtures; a framework that is seated on the gum of the oral cavity, having a plurality of coupling holes formed to penetrate at positions corresponding to the plurality of lower abutments; a coupling means for coupling the lower abutments to the framework; and a tooth-shaped prosthesis coupled to the framework.

[0008] The abutment coupling hole of the above fixture is formed in a polygonal shape in the upper portion of the female screw groove, and the lower abutment may be formed with a polygonal shape corresponding to the abutment coupling hole and a reinforcing insert portion connected to the inner surface of the abutment coupling hole extending downward.

[0009] The coupling means may include an anchor screw that secures the framework to the lower abutment by being fastened to the lower fastening hole of the lower abutment or the screw fastening hole of the fixture through the coupling hole of the framework.

[0010] A female screw portion with threads formed on the upper inner surface of the lower fastening hole of the lower abutment may be formed, and a male screw portion with threads formed to spirally engage with the female screw portion of the lower abutment may be formed on the lower outer surface of the anchor screw.

[0011] The upper part of the coupling hole of the above framework may be formed with a step in the radially inward direction so that the periphery of the head of the above anchor screw is caught.

[0012] The above framework has an arch shape corresponding to the shape of the upper or lower jaw of the oral cavity, and may be formed with a plurality of coupling holes to which the anchor screw is fastened and a plurality of prosthetic coupling holes to which a prosthetic abutment for coupling a prosthesis is coupled.

[0013] The above anchor screw penetrates the lower fastening hole of the lower abutment, and as its lower end is screw-coupled to the female screw groove of the fixture, the fixture and the lower abutment can be simultaneously coupled to the framework.

[0014] According to another embodiment of the present invention, the coupling means may include: an upper abutment coupled to the lower abutment through a coupling hole of the framework and coupled to a crown; and an adhesive resin that fills the gap between the upper abutment and the coupling hole of the framework and mutually fixes the upper abutment and the framework.

[0015] According to the present invention, a plurality of fixtures are implanted in alveolar bone of good bone quality, and a plurality of prostheses can be mounted by connecting the plurality of fixtures to each other using a framework, thereby increasing initial fixation strength and obtaining the advantage of excellent strength and stability.

[0016] In addition, by simply joining the framework using anchor screws or connecting it to the lower abutment using an upper abutment for fixing the prosthesis, a combination of multiple lower abutments and fixtures can be connected simultaneously, and since the prosthesis can be mounted on the framework, the prosthesis can be mounted in a short time, and there is also the advantage of easy removal and attachment of prostheses requiring repair or replacement.

[0017] In addition, if a reinforcing insert is formed in the lower abutment that is inserted into the inner side of the abutment fastening hole of the fixture and extends all the way to the female screw groove, the strength of the titanium fixture, which is relatively weaker than the lower abutment, can be increased, thereby preventing fracture and increasing durability.

[0018] In addition, by mounting the lower abutment horizontally with the gum, pain and damage to the gum can be eliminated during the insertion and removal of the prosthesis.

[0019] FIG. 1 is a perspective view showing a multi-unit dental implant according to one embodiment of the present invention.

[0020] FIG. 2 is a plan view of a framework constituting a multi-unit dental implant according to one embodiment of the present invention.

[0021] Figure 3 is a cross-sectional view of AA of Figure 2.

[0022] FIG. 4 is a cross-sectional view showing the configuration of a multi-unit dental implant according to one embodiment of the present invention in disassembly.

[0023] FIG. 5 is a cross-sectional view showing the combined configuration of a multi-unit dental implant according to one embodiment of the present invention.

[0024] FIG. 6 is a cross-sectional view showing a modified example of a multi-unit dental implant according to one embodiment of the present invention.

[0025] FIG. 7 is a cross-sectional view showing the configuration of a multi-unit dental implant according to another embodiment of the present invention.

[0026] FIG. 8 is a perspective view showing the upper abutment constituting the multi-unit dental implant illustrated in FIG. 7.

[0027] FIG. 9 is a plan view and a cross-sectional view of a framework constituting a multi-unit dental implant according to another embodiment of the present invention.

[0028] FIG. 10 is a cross-sectional view showing the configuration of the multi-unit dental implant illustrated in FIG. 9.

[0029] FIG. 11 is an exploded perspective view showing a multi-unit dental implant according to another embodiment of the present invention.

[0030] FIG. 12 is a perspective view showing a partial configuration of a multi-unit dental implant according to another embodiment of the present invention.

[0031] FIG. 13 is an exploded perspective view showing a multi-unit dental implant according to another embodiment of the present invention.

[0032] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and various modifications that may replace the embodiments and drawings of this specification may exist at the time of filing this application.

[0033] Hereinafter, a multi-unit dental implant will be specifically described according to the embodiments described below with reference to the attached drawings. In the drawings, the same reference numerals indicate the same components.

[0034] For the sake of understanding, the upper and lower parts of each component of the multi-unit dental implant described below are defined arbitrarily based on the drawings; however, when the multi-unit dental implant is installed in the maxilla versus the mandible, the upper and lower parts will be reversed. That is, when the multi-unit dental implant is installed in the maxilla, the upper part in the drawings will be positioned in the lower part of the actual maxilla, and conversely, the lower part in the drawings will be positioned in the upper part of the actual maxilla.

[0035] Referring to FIGS. 1 to 5, a multi-unit dental implant according to one embodiment of the present invention comprises a plurality of fixtures (10) implanted in alveolar bone (B), a lower abutment (20) coupled to each fixture (10), a framework (30) that simultaneously connects the plurality of lower abutments (20), a coupling means for coupling the lower abutments (20) to the framework (30), and a tooth-shaped prosthesis (50) coupled to the framework (30).

[0036] In this embodiment, the coupling means may be composed of an anchor screw (40) that secures the framework (30) to the lower abutment (20) by being fastened to the lower abutment (20) or fixture (10) through the coupling hole (31) of the framework (30).

[0037] The fixture (10) can be constructed by applying a fixture used in known dental implants. For example, the fixture (10) has screw threads formed on its outer surface so that it can be screw-coupled to a hole drilled in the alveolar bone (B), and an abutment coupling hole (11) in the shape of a polygon, such as a hexagon, square, or octagon, is formed in the center and extends from the upper side to the lower side. The upper end of the abutment coupling hole (11) is formed to communicate to the upper outer side through the upper surface of the fixture (10). In addition, a female screw groove (12) with screw threads formed on its inner surface may be provided at the lower end of the abutment coupling hole (11). The fixture (10) may be made of titanium, which has excellent osseointegration properties, but may also be made of various other materials having anti-allergic properties and excellent osseointegration properties.

[0038] The lower abutment (20) is attached to the upper part of the fixture (10) and is positioned at a location that corresponds approximately to the gum (G). The lower abutment (20) has a conical shape in which the cross-sectional area gradually increases toward the upper side, and the upper surface may be generally flat. Additionally, a lower fastening hole (21) is formed to penetrate vertically in the approximately central part of the lower abutment (20), coaxially communicating with the female screw groove (12) of the fixture (10).

[0039] A reinforcing insert portion (22) is formed at the bottom of the lower abutment (20) and is inserted into the abutment coupling hole (11) and coupled thereto. At this time, in order to prevent the lower abutment (20) from rotating relative to the fixture (10), the reinforcing insert portion (22) is formed to have a polygonal shape corresponding to the abutment coupling hole (11) and is connected to the inner surface of the abutment coupling hole (11). This reinforcing insert portion (22) is formed to extend to a depth reaching the female screw groove (12) of the abutment coupling hole (11) and also serves to reinforce the strength of the fixture (10).

[0040] That is, since the strength of the lower abutment (20) is relatively greater than the strength of the fixture (10) which is made using titanium that requires surface treatment, the strength of the fixture (10) can be increased by inserting the reinforcing insert part (22) of the lower abutment (20) deeply into the inner side of the abutment coupling hole (11) of the fixture (10) and connecting them.

[0041] The lower abutment (20) can be connected to the fixture (10) by an abutment screw (25) that is inserted through the lower fastening hole (21) and screw-coupled to the female screw groove (12) of the fixture (10).

[0042] The upper part of the lower abutment (20) is coupled with an anchor screw (40). To this end, a female screw portion (23) with screw threads formed on the upper inner circumference of the lower fastening hole (21) of the lower abutment (20) may be formed. Additionally, a male screw portion (42) that is screw-coupled to the female screw portion (23) may be formed on the lower part of the anchor screw (40).

[0043] As described above, when the lower abutment (20) is attached to the fixture (10), the lower abutment (20) is positioned generally horizontally with respect to the gum (G) and exposed to the outside. Therefore, the position of the lower abutment (20) exposed to the outside can be easily recognized visually, thereby providing the advantage of facilitating the assembly and disassembly of the framework (30) and the anchor screw (40).

[0044] The above framework (50) functions to support multiple prostheses (50) by integrally connecting multiple lower abutments (20) that are coupled to multiple fixtures (10). The framework (30) may be made of titanium, but may also be made of various other materials having anti-allergic properties and excellent osseointegration properties.

[0045] The framework (30) has an arch shape corresponding to the shape of the upper or lower jaw of the oral cavity, and a plurality of coupling holes (31) are formed vertically through at positions corresponding to a plurality of fixtures (10) and lower abutments (20) implanted in the alveolar bone. In addition, the framework (30) has a plurality of prosthetic coupling holes (32) formed vertically through at predetermined positions to which a prosthetic abutment (60) for coupling a prosthetic (50) corresponding to anterior or posterior teeth is coupled.

[0046] A plurality of coupling holes (31) of the above framework (30) may be formed at positions corresponding to the posterior teeth on both sides of the oral cavity. The upper inner surface of the coupling hole (31) of the framework (30) may be formed with a step inward in the radial direction so that the periphery of the head of the anchor screw (40) is caught thereon. At this time, the upper inner surface of the coupling hole (31) may have a polygonal hole shape, such as a hexagon, to prevent the anchor screw (40) from rotating and unraveling.

[0047] The anchor screw (40) has a male screw portion (42) formed on the outer surface of the lower portion that is screw-coupled to the female screw portion (23) of the lower abutment (20), and a head (41) protrudes radially outward on the outer surface of the upper portion so that when the anchor screw (40) is coupled to the lower abutment (20) by the male screw portion (42), the head (41) can press the stepped portion of the coupling hole (31) of the framework (30) toward the lower abutment (20) to fix it.

[0048] At this time, to compensate for the slight height difference between the fixture (10) and the gum (G) according to the implantation direction of the fixture (10), a photocurable adhesive resin may be applied to the gap between the anchor screw (40) and the lower abutment (20).

[0049] In this embodiment, the anchor screw (40) is configured to be coupled to the lower abutment (20) and the framework (30) is coupled to the lower abutment (20), but as shown in another embodiment in FIG. 6, the anchor screw (40) may be coupled to the lower fastening hole (21) of the lower abutment (20) and the lower end may be coupled to the female screw groove (12) of the fixture (10) so that the fixture (10) and the lower abutment (20) are coupled to the framework (30) at the same time.

[0050] The prosthesis (crown) (50) has the shape of a tooth, and multiple prostheses may be connected as a single unit. The prosthesis (50) may be made of materials such as zirconia, gold, or porcelain. The prosthesis (50) may be composed of a portion corresponding to the anterior part of the upper or lower jaw and a portion corresponding to the posterior part of the tooth. The portion corresponding to the anterior part and the portion corresponding to the posterior part may be formed as a single unit, but alternatively, the portion corresponding to the anterior part and the portion corresponding to the posterior part may be formed separately. The prosthesis (50) may be a ready-made product, and while multiple prostheses (crowns) connected as a single unit may be used, prostheses in the shape of individual teeth may also be used.

[0051] The prosthesis (50) can be joined to a prosthetic abutment (60) joined to a prosthetic coupling hole (32) of the framework (30) with a prosthetic bonding resin such as photocurable resin or dental resin, or joined by a screw.

[0052] The prosthetic abutment (60) can be connected to the prosthetic connection hole (32) of the framework (30) by a screw (65). Here, if the prosthetic abutment (60) is a straight type aligned with a vertical axis, the screw (65) is fastened at the upper side of the fastening hole (61) of the prosthetic abutment (60); however, if the prosthetic abutment (60) is an angled type inclined at a certain angle relative to the vertical axis, it may be preferable for aesthetic reasons to fasten the screw (65) at the lower side of the fastening hole (61) of the prosthetic abutment (60) to connect it to the framework (30).

[0053] A multi-unit dental implant composed of the above-described configuration can be implanted in a patient as follows.

[0054] First, a plaster model of the oral cavity is fabricated through CT scanning and / or impression taking of the patient's oral cavity.

[0055] Next, the framework (30) is fixed to the plaster model produced to mark the location where the fixture (10) will be implanted.

[0056] The condition of the alveolar bone at the location where the fixture (10) is to be implanted is confirmed by analyzing the plaster model and CT image. Then, the framework (30) is fixed in the oral cavity using a temporary fixing means such as an anchor pin (not shown), and a hole of a predetermined depth is drilled through the coupling hole (31) of the framework (30) using a drill, and the fixture (10) is firmly fixed by screw-coupling it inside the hole.

[0057] Once all fixtures (10) are implanted in the oral cavity, the framework (30) is removed from the oral cavity again, and a known healing cap (not shown) is attached to the fixture (10) and left until bone fusion is complete. After placing the healing cap, the upper jaw is kept in place for about 3 to 6 months and the lower jaw for about 1 to 3 months until bone fusion is complete.

[0058] When bone fusion is complete, the healing cap (not shown) is removed, and the lower abutment (20) is attached to the fixture (10). At this time, with the reinforcing insert portion (22) of the lower abutment (20) inserted into the abutment coupling hole (11) of the fixture (10), the abutment screw (60) is inserted through the lower fastening hole (21) of the lower abutment (20), and the screw threads at the bottom of the abutment screw (60) are screw-coupled to the female screw groove (12) of the fixture (10) to join the fixture (10) and the lower abutment (20). When the lower abutment (20) is completely attached to the fixture (10), the lower abutment (20) is exposed to the outside at a position corresponding to the gum (G). Therefore, when the operator installs the framework (30) in the oral cavity as shown below, the installation position of the framework (30) can be easily recognized visually through the lower abutment (20) exposed to the outside, allowing the framework (30) to be seated in the correct position in the oral cavity, and the anchor screw (40) can be accurately coupled to the female screw portion (23) of the lower abutment (20) through the coupling hole (31) of the framework (30).

[0059] That is, the operator can visually check the lower abutment (20) exposed outside the gum (G) and align the coupling hole (31) of the framework (30) with the female screw portion (23) of the lower abutment (20) to connect the anchor screw (40) to the lower abutment (20) by passing it through the coupling hole (31).

[0060] In this way, the anchor screw (40) is connected to the lower abutment (20) to integrate the framework (30), the lower abutment (20), and the fixture (10). Then, an impression is taken again, and the prosthesis (50) is connected to the prosthetic abutment (60) connected to the framework (30) using a screw or adhesive resin, thereby completing the implant placement.

[0061] Before installing the above framework (30) in the oral cavity, a plurality of prosthetic abutments (60) can be pre-attached to a plurality of prosthetic coupling holes (32) formed in the anterior and posterior portions of the framework (30).

[0062] The multi-unit dental implant of the present invention has the advantage of excellent strength and stability because it can implant a plurality of fixtures (10) in alveolar bone with good bone quality and connect the plurality of fixtures (10) to each other using a framework (30) to mount a plurality of prosthetics (50).

[0063] In addition, the prosthesis (50) can be attached in a short time, and there is also the advantage of being able to increase the initial fixation force.

[0064] Meanwhile, in the above-described embodiment, the anchor screw (40) is coupled to the lower fastening hole (21) of the lower abutment (20) through the coupling hole (31) of the framework (30) to connect the framework (30) to the lower abutment (20) using the anchor screw (40). However, as shown in the embodiment illustrated in FIGS. 7 and 8, the framework (30) can be connected to a plurality of lower abutments (20) by coupling the upper abutment (70) to the lower abutment (20) through the coupling hole (31) of the framework (30) and coupling the upper abutment (70) to the framework (30) using a photocurable adhesive resin (80). That is, in this embodiment, the coupling means for coupling the lower abutment (20) to the framework (30) consists of the upper abutment (70) and the photocurable adhesive resin (80).

[0065] The upper abutment (70) has its upper portion protruding upward from the framework (30) and is joined to the prosthesis (50). The upper abutment (70) may be made of a metal material such as titanium.

[0066] A circular ring-shaped seating portion (72) that is seated on the upper surface of the lower abutment (20) may be formed at the lower part of the upper abutment (70) and extended radially. Additionally, a tapered retaining part (73) that becomes thinner from the upper side to the lower side is formed at the lower part of the upper abutment (70) which is positioned inside the coupling hole (31) of the framework (30), so that when a photocurable adhesive resin (80) is injected into the coupling hole (31) and cured, the upper abutment (70) can be firmly and stably fixed to the framework (30).

[0067] An upper fastening hole (71) is formed in the central part of the upper abutment (70) to penetrate in the vertical direction, and a screw (75) is inserted through the upper fastening hole (71) and fastened to the female screw portion (23) of the lower abutment (20), thereby allowing the upper abutment (70) to be coupled to the lower abutment (20).

[0068] The above photocurable adhesive resin (80) may be a photocurable resin that can be cured by ultraviolet light or other wavelengths of light, or other known dental resins used for dental purposes.

[0069] In this way, the upper abutment (70) is coupled to the lower abutment (20) through the coupling hole (31) of the framework (30) and is also coupled to the framework (30) by an adhesive resin (80) to function to integrate the framework (30) with the plurality of lower abutments (20), and can also function to firmly support the prosthesis (50) by being coupled to the prosthesis (50).

[0070] FIGS. 9 and FIGS. 10 illustrate another embodiment of a multi-unit dental implant according to the present invention. In this embodiment, a catch (31a, 32a) is formed in the middle portion of the thickness direction of the coupling hole (31) and the prosthetic coupling hole (32) of the framework (30), and a head insertion groove (31b, 32b) into which the head of an anchor screw (40) or a prosthetic abutment (60) is inserted, and a projection insertion groove (31c, 32c) into which a coupling projection (27) protruding from the upper surface of the lower abutment (20) is inserted, may be formed in the upper and lower portions of the catch (31a, 32a), respectively.

[0071] In this way, a coupling projection (27) is formed on the lower abutment (20), and when the coupling projection (27) is inserted into the projection insertion groove (31c) of the framework (30) and coupled, the position of the framework (30) and the fixture (10) can be maintained in an accurately coupled state without shifting when implanting the anchor screw (40) and the prosthesis (50).

[0072] FIG. 11 shows another embodiment of a multi-unit dental implant according to the present invention. In this embodiment, the multi-unit dental implant is configured such that the framework (30) is divided into multiple parts, and the divided multiple frameworks (30) can be assembled together or separated and connected to the dental arch by means of screws (38) in the center or on the side.

[0073] In this way, when the framework (30) is divided into multiple parts, the multiple frameworks (30) can be assembled together or used in a separated state depending on the size of the dental arch.

[0074] FIG. 12 shows a fixture carrier (90) for implanting a fixture (10) of a multi-unit dental implant according to the present invention. The fixture carrier (90) has a lower portion that corresponds to a lower abutment (20), thereby providing the advantage that when implanting the fixture (10) through the coupling hole (32) of the framework (30), the fixture (10) can be accurately implanted into the dental arch where the framework (30) is seated.

[0075] Meanwhile, in order to perform an integrated analysis by taking X-rays of the patient's head to analyze the side profile, the front profile, and the three-dimensional volumetric analysis, a three-dimensional analysis of the fixture (10), lower abutment (20), framework (30), and prosthesis (50) is required. That is, for the accurate combination of the fixture (10), lower abutment (20), framework (30), and prosthesis (50), the plane, front-back, and upper-lower connection angles and lengths of each element must be accurate.

[0076] Accordingly, in order to represent the three dimensions by X-raying the patient's head, a plurality of reference points (P) (four in this embodiment) can be marked on one side of the upper part of the fixture (10), lower abutment (20), framework (30), and prosthesis (50), as shown in FIG. 13.

[0077] The occlusal plane is represented by the four reference points (P) above, allowing the three-dimensional positions of each element in the front-back, left-right, and up-down directions to be accurately verified. Therefore, the four reference points (P) marked on the top of the fixture (10), lower abutment (20), framework (30), and prosthesis (50) can be utilized for the subsequent fabrication of the prosthesis (50), and when using existing dentures, the positions of the fixture (10), lower abutment (20), and framework (30) can be determined and implanted using the reference points (P).

[0078] Although the present invention has been described in detail above with reference to embodiments, it is obvious to those skilled in the art that various substitutions, additions, and modifications are possible within the scope of the technical concept described above without departing from the spirit of the invention, and such modified embodiments should also be understood to fall within the scope of protection of the present invention as defined by the claims appended below.

[0079] The present invention can be applied to a dental implant product that can be implanted in a patient's alveolar bone.

Claims

1. A plurality of fixtures that are implanted and fixed in the alveolar bone, each having an abutment coupling hole formed to communicate upwardly with a female screw groove having screw threads formed on its inner surface; A lower fastening hole is formed so as to penetrate vertically through the lower portion, communicating with the abutment coupling hole of the plurality of fixtures, and a plurality of lower abutments are coupled to the upper portion of the fixture; A framework having a plurality of coupling holes formed to penetrate at positions corresponding to the plurality of lower abutments and seated on the gums of the oral cavity; Coupling means for coupling the lower abutment to the framework; and, A tooth-shaped prosthesis combined with the above framework; A multi-unit dental implant including 2. In Paragraph 1, A multi-unit dental implant in which the abutment coupling hole of the above fixture is formed in a polygonal shape in the upper portion of the female screw groove, and the lower abutment is formed in a polygonal shape corresponding to the abutment coupling hole, with a reinforcing insert portion extending downwardly in contact with the inner surface of the abutment coupling hole.

3. In Paragraph 1 or 2, A multi-unit dental implant comprising an anchor screw that secures the framework to the lower abutment by being fastened to the lower fastening hole of the lower abutment or the screw fastening hole of the fixture through the coupling hole of the framework.

4. In Paragraph 3, A female screw portion having screw threads is formed on the upper inner surface of the lower fastening hole of the lower abutment, and A multi-unit dental implant having a male screw portion formed on the lower outer surface of the anchor screw, the male screw portion having threads that are spirally coupled to the female screw portion of the lower abutment.

5. In Paragraph 3, A multi-unit dental implant in which the upper part of the coupling hole of the above framework is formed with a step in the radially inward direction so that the periphery of the head of the above anchor screw is caught.

6. In Paragraph 3, A multi-unit dental implant in which the anchor screw penetrates the lower fastening hole of the lower abutment and its lower end is screw-coupled to the female screw groove of the fixture, thereby simultaneously connecting the fixture and the lower abutment to the framework.

7. In Paragraph 3, A multi-unit dental implant with photocurable adhesive resin applied to the gap between the anchor screw and the lower abutment.

8. In Paragraph 1 or 2, The coupling means comprises: an upper abutment coupled to the lower abutment through the coupling hole of the framework and coupled to the crown; and An adhesive resin that fills the gap between the upper abutment and the coupling hole of the framework and mutually fixes the upper abutment and the framework; A multi-unit dental implant including 9. In Paragraph 1, The above framework has an arch shape corresponding to the shape of the upper or lower jaw of the oral cavity, and is a multi-unit dental implant formed with a plurality of coupling holes corresponding to the upper part of the lower abutment and a plurality of prosthetic coupling holes to which a prosthetic abutment for coupling a prosthesis is coupled.

10. In Paragraph 1, A connecting projection is formed to protrude from the center of the upper surface of the lower abutment, and A multi-unit dental implant in which the coupling hole of the above framework has a stopper formed in the middle portion in the thickness direction, and a projection insertion groove formed below the stopper into which a coupling projection of the lower abutment is inserted.

11. In Paragraph 1, The above framework is a multi-unit dental implant configured to be divided into multiple parts.

12. In Paragraph 1, A multi-unit dental implant having a plurality of reference points marked on one side of the fixture, lower abutment, framework, and upper portion of the prosthesis.

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