Implant assembly

Abstract

The present invention proposes an implant assembly having an abutment which can be easily combined with a crown. The abutment (20) of the present invention has a connection groove (24) formed in the center and an upper inclined surface (22) which is increasingly raised outward from the upper end of the connection groove (24), and is fixed to the upper part of a fixing member (80) fixed to the alveolar bone. Also, the crown link (30) has a lower inclined surface (32) which contacts the upper inclined surface (22) of the abutment (20) at the lower part, and a crown support part (36) for supporting the crown at the upper part. If the crown link (30) is placed on the abutment (20), the upper inclined surface (22) and the lower inclined surface (32) are combined with each other, and the through hole (38) of the crown link (30) and the connection groove (24) of the abutment (20) are arranged on the same axis, so that the two can be easily connected and fixed by using a connection screw (40).

Description

Technical Field

[0001] This invention relates to implant assemblies, and more specifically, to an implant assembly having an abutment that can be accurately and easily coupled to a crown or a crown link having a crown, and that enables accurate machining of the crown link. Background Technology

[0002] Prior patent documents concerning implant abutments and related peripheral components include, for example, Korean Patent Publication No. 10-2015-0036467. Figure 1 This illustrates a base 20 as proposed in a prior patent document. A flat peripheral top surface 18 is formed on the outer periphery of the base 20 proposed in this prior patent document, and a portion of such a flat top surface 18 serves as a support for the tooth crown. Summary of the Invention

[0003] However, the structure described in the prior patent document is not only complex to support the crown, but also presents considerable inconvenience in attaching the crown or crown-equipped components to the base 20. Furthermore, there is a risk that accurate dimensional control may be difficult to achieve in the manufacturing of the crown-related components attached to the base.

[0004] The object of the present invention is to provide a base assembly that, in terms of the engagement (connection) of the crown, is easily connected to the crown or a component on which the crown is mounted.

[0005] Another object of the present invention is to provide a base assembly capable of accurately controlling the dimensions of a crown or crown-related component that is coupled with the base.

[0006] Another object of the present invention is to provide a structure that can easily fix the base to the fastener.

[0007] The present invention comprises: a base having a centrally formed connecting groove and an upper inclined surface that gradually rises outward from the upper end of the connecting groove, for fixing to the upper part of a fixation member fixed to the alveolar bone; and a crown link having a lower inclined surface at its lower part that contacts the upper inclined surface of the base, and a crown support portion at its upper part for supporting the tooth crown. Furthermore, when the crown link is placed on the base, the upper and lower inclined surfaces engage with each other, and the through hole of the crown link and the connecting groove of the base are arranged coaxially, allowing for easier connection using connecting screws.

[0008] Furthermore, the connecting rod joint formed at the inlet of the connecting groove includes: a hexagonal portion having hexagonal corners; and an arcuate portion extending outward from between the hexagonal portions. With this configuration, substantially any hexagonal or cylindrical shape of the lower end protrusion of the crown connecting rod can be accommodated.

[0009] According to another embodiment of the present application, a female threaded portion for screwing with the connecting screw is formed in the lower portion of the connecting groove, and a plurality of screwdriver grooves are formed in the female threaded portion in the up-and-down direction.

[0010] According to another embodiment of the present application, a dental crown is integrally formed in the crown support portion of the crown connecting rod.

[0011] According to the present application having the above-described configuration, if the upper inclined surface of the abutment and the lower inclined surface of the crown connecting rod are combined with each other, the connecting groove of the abutment and the through hole of the crown connecting rod are substantially aligned in a line. Therefore, it is expected that they can be more easily connected and fixed to each other using the connecting screw.

[0012] Further, the connecting rod combining portion formed at the entrance of the connecting groove of the present application can accommodate the lower end protrusion of the crown connecting rod in the hexagonal or cylindrical shape since it has both the hexagonal portion and the circular arc portion. The female threaded portion for screwing with the connecting screw is formed in the lower portion of the connecting groove, and a plurality of screwdriver grooves are formed in the female threaded portion in the up-and-down direction, so it is known that not only the combining of the connecting screw can be more easily achieved, but also the abutment can be more easily fixed to the fixing member. In addition, the dental crown can be integrally formed in the crown support portion of the crown connecting rod, so it is expected that the simple configuration can be achieved as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is an explanatory diagram showing an example of a conventional implant.

[0014] Figure 2 is a perspective view showing the assembled state of the implant assembly of the present application.

[0015] Figure 3 is a perspective view showing the state that a part of the implant assembly of the present application is cut away.

[0016] Figure 4 is an explanatory diagram showing the combined state of the implant assembly of the present application.

[0017] Figure 5 is a partially cut-away perspective view of the abutment of the present application.

[0018] Figure 6 is a plan view of the abutment of the present application.

[0019] Figure 7 is a perspective view of the crown connecting rod of the present application.

[0020] Figure 8 is a perspective view showing a dental crown applicable to the implant assembly of the present application. DETAILED DESCRIPTION

[0021] The present application will be examined in more detail below based on the embodiments shown in the accompanying drawings.

[0022] As Figure 2 shown, the abutment 20 is combined with the upper portion of the fixing member 80 fixed to the alveolar bone, and the upper portion is formed as an inclined surface 22 as shown. In the present application, the "upper inclined surface 22" of the abutment 20 is defined as an inclined surface formed in a form that the outer side is higher and the inner side is lower. Also, as Figure 3 shown, the upper inclined surface 22 of the abutment 20 can be said to correspond to the lower inclined surface 32 of the crown link 30.

[0023] That is, the lower inclined surface 32 corresponding to the above-mentioned upper inclined surface 22 is provided at the lower portion of the crown link 30 combined with the upper portion of the abutment 20, so that they can be closely combined with each other. The crown link 30 is substantially used to support a tooth crown, and for example, a flange 34 protruding to the outer side so as to form the lower inclined surface 32 is formed on a crown support portion 36 extending to the upper portion, and a tooth crown is formed on the flange 34. Also, it is known that the above-mentioned lower inclined surface 32 is formed on the bottom surface of the flange 34 protruding to the outer side.

[0024] As described above, the upper inclined surface 22 formed on the upper surface of the abutment 20 is formed to be lower at the center, and the lower inclined surface 32 of the crown link 30 combined with the upper inclined surface 22 is also formed to be lower at the center and higher at the outer side, so that the upper inclined surface 22 and the lower inclined surface 32 can be combined in a state of being closely combined with each other. If the upper inclined surface 22 and the lower inclined surface 32 are combined with each other, the relative position of the abutment 20 and the crown link 30 is substantially accurately set.

[0025] Here, the relative position of the abutment 20 and the crown link 30 is accurately determined, as Figure 3 shown, it means that the lower portion 38b of the through hole of the crown link 30 and the connection groove 24 formed at the center of the abutment 20 are naturally arranged in a state of being coincided with each other. Therefore, it is expected to have an advantage that the connection of the crown link 30 and the abutment 20 can be easily achieved using the connection screw 40.

[0026] In Figure 4In the present embodiment, the coupling relationship of the abutment 20 and the crown link 30 each having the upper inclined surface 22 and the lower inclined surface 32 as described above is shown. As shown in the figure, in the inclined state as shown in (a) or the reverse inclined state as shown in (b), the abutment 20 and the crown link 30 can be accurately aligned with each other substantially by means of the upper inclined surface 22 and the lower inclined surface 32. Here, the so-called accurate alignment means that if the crown link 30 is placed on the abutment 20, the upper inclined surface 22 and the lower inclined surface 32 are coupled to each other while the through hole 38 of the crown link 30 and the connection groove 24 of the abutment 20 are aligned coaxially. Here, the two can be easily coupled by means of the coupling screw 40. It is easily understood that, for example, if the two contact surfaces are flat surfaces without the inclined surfaces 22 and 32 as described above, it is considerably difficult to align the lower end coupling protrusion 38b of the crown link 30 and the connection groove 24 of the abutment 20 with each other.

[0027] As shown in Figure 3 and Figure 4 the lower threaded portion 26 formed at the lower end of the abutment 20 is screwed into the threaded hole 82 of the fixing member 80 which is open upward. Also, the connection groove 24 which is open upward is formed at the center of the upper inclined surface 22 of the abutment 20. A female threaded portion 24a is formed at the lower portion of this connection groove 24, and this female threaded portion 24a is a portion which is screwed into the male threaded portion 44 formed at the lower end of the coupling screw 40. Here, the coupling screw 40 is used to couple and fix the crown link 30 to the abutment 20.

[0028] Also, a plurality of screwdriver grooves 24b are formed in the female threaded portion 24a in the up-and-down direction. These screwdriver grooves 24b can be used for insertion of a tool such as a screwdriver (or a wrench, etc.) when the abutment 20 is fixed to the fixing member 80 in order to rotate the abutment 20 for coupling. By means of these screwdriver grooves 24b, the abutment 20 can be coupled and fixed to the fixing member 80 in a sufficiently strong state.

[0029] Referring to Figure 5 and Figure 6 it can be seen that the link coupling portion 21 into which the lower end protrusion 31 formed at the lower end of the crown link 30 is inserted and coupled is formed at the inner side of the upper inclined surface 22 at the upper end (the entrance portion) of the connection groove 24. That is, the connection groove 24 formed at the upper portion of the abutment 30 is used to couple the crown link 30 to the upper portion by means of the coupling screw 40, and in this coupling, the lower end coupling protrusion 31 of the crown link 30 is inserted into the link coupling portion 21 formed at the upper end of the connection groove 24 of the abutment 20.

[0030] The shapes of the connecting screw 40 and the crown link 30 are examined. The crown link 30 is cylindrical, with a crown support portion 36 formed at the upper part having a relatively large diameter, and an upper through hole 38a formed on its inner surface. Furthermore, the lower end protrusion 31 formed at the lower end has a relatively small diameter, and a lower through hole 38b with a relatively small diameter is formed on its inner surface. A through hole inclined surface 38c is formed between the upper through hole 38a and the lower through hole 38b to connect them. The through hole inclined surface 38c also slopes upwards from the upper part to the outer side.

[0031] Furthermore, when the connecting screw 40 is inserted into the through hole 38 of the crown connecting rod 30, it engages with the female thread portion 24a of the connecting groove 24 of the base 20. This connecting screw 40 has a connecting screw upper portion 42, a connecting screw lower portion 44, and a connecting screw inclined surface 46 that connects them to each other. It can be seen that this connecting screw 40 has a shape that substantially corresponds to a tight contact with the through hole 38 of the crown connecting rod 30, and the connecting screw lower portion 44 is formed with a male thread, engaging with the female thread portion 24a of the connecting groove 24 of the base 20.

[0032] As described above, if the crown link 30 is fixed to the base 20 by means of the connecting screw 40, then, as described above, the upper inclined surface 22 of the base 20 and the lower inclined surface 32 of the crown link 30 are in contact with each other. Moreover, the lower end protrusion 31 of the crown link 30 remains inserted into the link joint 21, wherein the link joint 21 forms the upper part of the connecting groove 24 of the base 20.

[0033] Next, we will examine an embodiment of a connecting rod joint 21 formed on the upper part of the base 20 and a lower end protrusion 31 of the crown connecting rod 30 connected to this connecting rod joint 21. Figure 6 In the diagram, (a) is a plan view of the base 20, and (b) is a schematic diagram to help understand the connecting slot 24. Figure 6 As shown, the connecting rod joint 21 is essentially the part that forms the entrance (upper part) of the connecting groove 24 of the base 20, and as described above, the lower end protrusion 31 of the crown connecting rod 30 is inserted into this part.

[0034] The lower end of the crown link 30 is as follows Figure 7 As shown, it can have two forms. The lower protrusion 31a shown in (a) is a hexagonal protrusion and is used in the case of a single crown. The lower protrusion 31b shown in (b) is cylindrical and can be used in the case of multiple crowns bridging. According to the present invention, the connecting rod joint 21, which serves as the inlet of the connecting groove 24 of the base 20, is configured to simultaneously accommodate the hexagonal lower protrusion 31a shown in (a) and the cylindrical lower protrusion 31b shown in (b).

[0035] refer to Figure 6As is apparent from (a) and (b) of FIG. 21, the connecting rod coupling portion 21 includes a hexagonal portion 21a having a local shape of each corner portion of a hexagon, and a circular arc portion 21b formed by extending a circle partially outward with respect to all sides of the hexagon. The circular arc portion 21a can be substantially said to be a portion in which a circle is expanded outward from each side of the hexagon into a circular arc shape.

[0036] According to the connecting rod coupling portion 21 having such a shape, Figure 7 the hexagonal lower end protrusion 31a shown in (a) of FIG. 31 can enter the hexagonal portion 21a of the connecting rod coupling portion 21, as is apparent from (a) of FIG. 31. Figure 7 The cylindrical lower end protrusion 31b shown in (b) of FIG. 31 can enter the circular arc portion 21b of the connecting rod coupling portion 21. As a reference, a portion of the crown support portion 36 has a flat shape in order to prevent the arbitrary rotation of the crown coupled to the upper portion of the connecting rod coupling portion 21.

[0037] Furthermore, as is apparent from Figure 2 and Figure 3 , the abutment 20 is configured to protrude upward by a predetermined height in a state of being fixed to the fixing member 80. That is, the upper portion 22A of the abutment 20 in which the above-described upper inclined surface 22 is formed protrudes outward (in a radial direction), and thus can be said to have a predetermined height with respect to the fixing member 80. This can be said to be because the abutment 20 is designed to have various sizes according to the gum height of a patient who receives a surgery.

[0038] Hereinafter, with reference to Figure 8 , another embodiment of the present application will be examined. In Figure 8 , (a) shows the assembly of the abutment 20 and the fixing member 80 described above, (b) shows an embodiment in which the crown C is placed on the crown connecting rod 30 assembled to the upper portion of the abutment 20, and (c) shows an embodiment in which the crown connecting rod is deformed. As is apparent from (b), the embodiment shows that the crown C is coupled to the crown support portion 36 of the crown connecting rod 30 in the embodiment described above.

[0039] As is apparent from the embodiment shown in (c), the crown is integrally formed with the crown connecting rod 30C. As described above, it can be said that the crown is formed directly on the upper portion of the crown connecting rod 30C fixed by the connecting screw 40 on the upper portion of the abutment 20. In this embodiment, the crown connecting rod 30C of the present embodiment has substantially the same structure and connection relationship as described above, except for the crown formed on the upper portion, with respect to the organic connection portion of the connecting screw 40 and the abutment 20, which is naturally expected.

[0040] Various modifications can be applied by those skilled in the art within the scope of the basic technical idea of the present application described above. The scope of protection of the present application should be interpreted based on the contents recited in the claims, which is naturally expected in the purpose of the patent law.

Claims

1. An implant assembly, characterized by Comprise: an abutment (20) having a connection groove (24) formed in the center and an upper inclined surface (22) rising outwardly from the upper end of the connection groove (24) for fixing to the upper part of a fixing member (80) fixed to the alveolar bone; a crown connecting rod (30) having a lower inclined surface (32) contacting the upper inclined surface (22) of the abutment (20) at the lower part and a crown support part (36) for supporting a dental crown at the upper part; wherein, if the crown connecting rod (30) is placed on the abutment (20), the upper inclined surface (22) and the lower inclined surface (32) are combined with each other while the through hole (38) of the crown connecting rod (30) and the connection groove (24) of the abutment (20) are arranged coaxially; the connecting rod combining part (21) formed at the entrance of the connection groove (24) comprises hexagonal parts (21a) having the shape of each corner part of a hexagon; and arc parts (21b) extending outwardly from between the hexagonal parts (21a); a female screw part (24a) for screwing with a connecting screw (40) is formed at the lower part of the connection groove (24), and a plurality of screwdriver grooves (24b) are formed in the female screw part (24a) in the vertical direction.

2. The implant assembly according to claim 1, wherein a dental crown is integrally formed at the crown support part (36) of the crown connecting rod (30).

Images