KR102568819B1 - Dental implant system - Google Patents

Abstract

The present invention relates to a dental implant system, and more particularly, to a dental implant that blocks the inflow of foreign substances and absorbs and buffers occlusal force by filling a gap between a crown (artificial tooth/prosthesis) and an abutment using a connector. It's about the system.
According to the dental implant system according to the present invention, in the abutment screw separable implant system in which the crown is coupled and fixed to the abutment by using a locking structure, there is a gap between the crown and the abutment due to a step caused by the locking structure. Inflow of foreign substances such as food debris can be prevented by filling the gap using a connector.

Description

Dental implant system {DENTAL IMPLANT SYSTEM}

The present invention relates to a dental implant system, and more particularly, to a dental implant that blocks the inflow of foreign substances and absorbs and buffers occlusal force by filling a gap between a crown (artificial tooth/prosthesis) and an abutment using a connector. It's about the system.

The dental implant system basically includes a fixture to be placed in the alveolar bone, an abutment fixed to the fixture and supporting pressure corresponding to the occlusal force applied during chewing, an upper part of the abutment, In other words, it includes a crown (artificial tooth/prosthetic appliance) that restores an aesthetic beauty similar to that of a natural tooth by restoring the post.

Briefly explaining the implant procedure, first, the abutment is fixed by placing a fixture in the alveolar bone of the person to be treated. Then, the crown is coupled to the post of the abutment to be restored. At this time, the crown is attached and fixed using an adhesive (cement or bond) harmless to the human body so that the crown is not easily separated from the abutment during mastication.

However, in the traditional treatment method of attaching and fixing the crown to the abutment using adhesive, the adhesive is not completely removed after the procedure and some remains, and the remaining adhesive causes inflammation around the gums and implants. By doing so, the alveolar bone (bone) around the screw thread of the fixture can be lost. In severe cases, side effects such as having to perform an implant procedure again after removing the implanted fixture may follow.

KR 10-2480663 B1, 2022. 12. 20. KR 10-2480666 B1, 2022. 12. 20.

Recently, technology development for a dental implant system capable of coupling a crown to an abutment without using an adhesive has been actively progressed. For example, the crown is coupled to the abutment by coupling a locking structure such as an abutment cap to the top of the abutment so that the crown can be locked in a direction in which the crown is coupled to and separated from the abutment.

However, in the structure of coupling and fixing the crown to the abutment using the locking structure, even if the pore process is precisely performed, a gap inevitably exists between the abutment and the crown due to the locking structure. Of course, it is possible to fill the gap between the abutment and the crown using an adhesive, but the use of the adhesive is restricted due to the side effects described above, so foreign substances such as food debris are inevitably introduced.

Therefore, the present invention may be proposed to solve various problems that may occur in an implant system that couples and fixes a crown to an abutment using a locking structure, including the above problems. However, the use of an adhesive is not excluded.

As a problem (purpose) to be solved by the present invention, in an implant system for coupling and fixing a crown to an abutment by using a locking structure, a gap generated between the crown and the abutment due to a step caused by the locking structure is removed by using a connector. It is to provide a dental implant system equipped with a connector capable of preventing the inflow of foreign matter by filling it by using.

In addition, as another problem to be solved by the present invention, in an implant system for coupling and fixing a crown to an abutment using a locking structure, the crown is attached to the outer surface of the abutment by eliminating the step caused by the locking structure through a connector. It is to provide a dental implant system capable of completely eliminating a gap generated between a crown and an abutment even when a locking structure exists by making them more closely adhered.

In addition, as another problem to be solved by the present invention, in an implant system for coupling and fixing a crown to an abutment using a locking structure, a gap generated between the crown and the abutment due to a step caused by the locking structure is reduced. An object of the present invention is to provide a dental implant system having a connector in which a connector installed to be filled is stably fixed to an outer surface of an abutment without using an adhesive to prevent falling off.

In addition, as another problem to be solved by the present invention, in a structure in which a connector is installed between the crown and the abutment to fill the gap that occurs between the crown and the abutment due to the step caused by the locking structure, the crown is a connector It is to provide a dental implant system capable of preventing an installed abutment from rotating on an axis.

In addition, the present invention is not limited to the above-mentioned purpose, and various other objects may be additionally provided through the techniques described through the following embodiments and claims.

The present invention according to an embodiment for achieving the above object is an abutment coupled to the fixture; an abutment screw including a head protruding above the post of the abutment; and a connector covering the outer surface of the post of the abutment and the head of the abutment screw.

In addition, the connector has a hollow so as to cover the outer surface of the post of the abutment and the head of the abutment screw, and the inner surface of the hollow of the connector is the post of the abutment and the head of the abutment screw. Corresponding to the outer surface, a diameter may decrease toward the top, and a horizontal extension may be formed at a lower end to cover a barrier formed between the post of the abutment and the cuff of the abutment.

In addition, the connector may be formed such that an inner surface inclination is the same as an outer surface inclination of the post of the abutment based on an axial line of the post of the abutment.

In addition, one or a plurality of anchor grooves or anchor protrusions are formed on at least one of the outer surface of the post of the abutment or the outer surface of the head of the abutment screw, and the anchor groove or anchor protrusion is formed on the inner surface of the connector. Correspondingly, an inner protrusion or an inner groove coupled to the anchor groove or anchor protrusion may be formed.

In addition, the anchor groove or anchor protrusion formed on the post of the abutment may extend from the lower part of the post of the abutment to the upper part of the cuff of the abutment.

In addition, a driver groove may be formed on the top of the head of the abutment screw.

In addition, a coupling groove is formed on the upper part of the head of the abutment screw, and the coupling groove is a holding structure accommodated in the receiving portion of the crown coupled to restore the post of the abutment and the head of the abutment screw. This coupling is fixed, and the inner surface of the receiving portion of the crown is engaged downward by the head of the holding structure to be coupled and fixed to the post of the abutment and the head of the abutment screw.

In addition, the holding structure may be formed in a horizontal plane so that the lower surface of the head comes into contact with the upper surface of the head of the abutment screw, or may be formed to have an inclined surface whose outer diameter increases from the upper surface of the head of the abutment screw to the top. there is.

In addition, an anti-rotation groove is formed on the abutment to extend from a bump between the post of the abutment and the cuff of the abutment to an upper portion of the cuff, and a lower portion of the connector is coupled to the anti-rotation groove. A vertical extension is formed, and an anti-rotation protrusion coupled to the anti-rotation groove may be formed at a lower portion of the crown coupled to restore the post of the abutment and the head of the abutment screw.

In addition, in the connector, a portion surrounding the outer surface of the head of the abutment screw and a portion surrounding the outer surface of the post of the abutment may be separated from each other.

In addition, in the connector, a portion surrounding the outer surface of the head of the abutment screw and a portion surrounding the outer surface of the post of the abutment may be integrally formed with each other.

In addition, the connector may be made of a rubber material, a plastic material, a high-performance polymer material, or a metal material.

In addition, one or a plurality of side slits may be formed in the connector.

As described above, according to the dental implant system according to an embodiment of the present invention, in the implant system for coupling and fixing the crown to the abutment using the locking structure, the crown and the abutment are separated due to the step caused by the locking structure. The inflow of foreign substances, such as food waste, can be prevented by stably filling the gaps between them using connectors.

In addition, according to the dental implant system according to an embodiment of the present invention, in the implant system for coupling and fixing the crown to the abutment using the locking structure, a connector is placed between the post of the crown and the abutment to secure the locking structure. It is possible to eliminate the gap between the crown and the abutment by adhering the crown more closely to the outer surface of the abutment by resolving the resulting step (step difference due to the locking structure manufactured outside the tolerance range).

In addition, according to the dental implant system according to an embodiment of the present invention, in the implant system for coupling and fixing the crown to the abutment using the locking structure, filling the gap between the crown and the abutment due to the locking structure By forming an inner protrusion (or inner groove) on the connector installed for the abutment and fixing it to the anchor groove (or anchor protrusion) formed on the post of the abutment, the connector is coupled and fixed to the outer surface of the abutment without using adhesives. It is possible to prevent the connector from being detached from the post of the butment.

In addition, according to the dental implant system according to an embodiment of the present invention, the abutment in a structure in which a connector is installed between the crown and the abutment to fill the gap between the crown and the abutment due to a step caused by the locking structure By forming an anti-rotation groove on the chin and cuff, an extension part on the connector, and an anti-rotation protrusion on the crown, it is possible to prevent the crown from rotating around the abutment in which the connector is installed.

In addition, according to the dental implant system according to an embodiment of the present invention, the connector installed to fill the gap between the crown and the abutment due to the level difference caused by the locking structure is formed of a material having elasticity such as rubber, so that the repetitive It absorbs the occlusal force exerted by the natural teeth and prevents the fracture of abutments or fixtures.

1 is a view showing a connector according to a first embodiment of the present invention;
Fig. 2 is a longitudinal sectional view of the connector shown in Fig. 1;
3 is a view showing an abutment and an abutment screw to which a connector is coupled according to the first embodiment of the present invention.
Figure 4 is a view showing a dental implant system to which the connector according to the first embodiment of the present invention is applied.
5 is views showing a dental implant system in which a crown is coupled and fixed to the structure shown in FIG. 4;
6 is a cross-sectional view showing a connector according to a second embodiment of the present invention;
7 is a cross-sectional view showing an abutment and an abutment screw to which the connector shown in FIG. 6 is coupled;
8 is a view showing a state in which connectors are coupled to the structure of FIG. 7;
9 is a view showing a connector according to a third embodiment of the present invention.
10 is a view showing a state in which connectors are coupled to the structure of FIG. 9;
11 is a view showing a state in which a crown is coupled to the structure shown in FIG. 10;
12 is a cross-sectional view showing a connector according to a fourth embodiment of the present invention.
Figure 13 is a view showing a state in which the connector shown in Figure 12 is coupled to the abutment.
14 is a cross-sectional view illustrating a process in which the lower part of the connector shown in FIG. 12 is coupled to the post of the abutment;
15 is a cross-sectional view illustrating a process in which the upper part of the connector shown in FIG. 12 is coupled to the head of the abutment screw.
16 is a cross-sectional view illustrating a process of coupling the abutment screw to which the upper part of the connector shown in FIG. 12 is coupled to the abutment to which the lower part of the connector is coupled;

Hereinafter, the advantages and characteristics of the present invention, and methods for achieving them will become clear with reference to the embodiments to be described in detail in conjunction with the accompanying drawings. Also, like reference numerals designate like elements throughout this specification. In addition, each component shown in each figure may be excessively illustrated in size and shape, which is for convenience of description and is not intended to be limited. In addition, when described as 'A and/or B', it may mean both A and B, or either A or B.

As an example of a dental implant system for coupling and fixing a crown to an abutment using a hooking structure, Korean Registered Patent No. 10-2304199 (Registration Date: 2021.09.14.), Korean Registered Patent No. proposed by the present applicant In the structure proposed in No. 10-2304798 (registration date: 2021.09.15.), more precise crown production is required than when using an adhesive. This is because the hooking structure functions mechanically (physically). This is because it is difficult to precisely combine the hooking structures in a coupling process between the hooking structures when the hooking structures are out of tolerance.

The problem in the dental implant system that uses the locking structure is that the entire inner surface of the crown receiving part (the inside of the crown where the abutment post is accommodated) is stably and closely adhered to the outer surface of the abutment without gaps. It is difficult to combine with . For example, when the crown is coupled to the abutment, one side of the receiving part of the crown may be closely coupled to the abutment, but the other side may not be tightly coupled to the abutment and a space (gap) may be formed between them. . This is because the crown does not come into uniform contact with the entire outer surface of the abutment due to the hooking structure, and point contact or line contact is made between the crown and the abutment.

Therefore, in the dental implant system according to an embodiment of the present invention, a connector is placed between the crown and the abutment instead of an adhesive to fill the gap that may occur between the crown and the abutment due to the application of the locking structure, thereby eliminating the need for removal. can These connectors are located between the crown and the abutment to compensate for errors in the dental procedure, as in the case of using adhesives, and also absorb the occlusal force transmitted from the crown depending on the material of the connector, allowing natural movement like natural teeth. can provide

As described above, when the connector is placed between the crown and the abutment instead of the adhesive, many advantages can be provided in the implant system using the locking structure. However, applying connectors is never easy. The space between the crown and the abutment is microscopic. For this reason, the connector located in the space between the crown and the abutment is also manufactured with a micro-unit thickness corresponding to this. A connector having a thickness of microns makes manipulation difficult. Because of this, positioning the connector between the crown and the abutment can be a daunting task.

A connector having a micro-unit thickness may make manipulation more difficult from the operator's (operator's) side due to its small thickness. In particular, it is not easy to maintain the shape of the connector before installing it in the space between the crown and the abutment. For example, as in prior literature such as the aforementioned Korean Patent No. 10-2304199 and Korean Patent No. 10-2304798, in a dental implant system using an abutment structure as an abutment cap, the post of the abutment is As it is made of a taper structure (inclined structure) in which the diameter decreases toward the upper end, the slope between the lower end and the upper end is large, and the connector may not be seated in the space between the crown and the abutment and may fall out.

An adhesive may be used to prevent the connector from coming off, but as described above, side effects caused by the use of the adhesive must be endured. In addition to this, since it is necessary to find and use an adhesive suitable for the connector, this can also be cumbersome and make the work difficult. Of course, the present invention does not exclude the use of an adhesive within the technical scope.

In the present invention, in an abutment screw-separable implant system in which an abutment is coupled and fixed to a fixture through an abutment screw, and the head of the abutment screw protrudes and is coupled to the upper part of the post of the abutment, the crown and the abutment In order to tightly fill the space between the post of the abutment and the head of the abutment screw using a connector, the connector is formed to correspond to the shape of the post of the abutment and the head of the abutment screw.

Hereinafter, specific embodiments of a connector that can be applied to an abutment screw-separable dental implant system will be described with reference to the drawings.

Example 1

1 is a schematic view of a connector according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view (longitudinal cross-sectional view) of the connector shown in FIG. 1 cut in a vertical direction.

1 and 2, the connector 10 according to an embodiment of the present invention has a diameter decreasing from the lower end to the upper end in correspondence with the post of the abutment having a tapered structure in which the outer diameter decreases from the lower end to the upper end. It may be made of a tapered structure that does.

The connector 10 has a lower and upper portion open to form a hollow 10a penetrating vertically. The post of the abutment and the head of the abutment screw protruding upward from the post of the abutment are inserted into the hollow 10a. The hollow 10a has an outer diameter of the post of the abutment and the head of the abutment screw, the inner surface of which is accommodated in close contact with the outer surface of the post of the abutment and the head of the abutment screw protruding and coupled to the upper part of the post. Correspondingly, the inner diameter may decrease from the lower end to the upper end.

As shown in FIGS. 1 and 2, the connector 10 is bent and extended horizontally along the circumference of the lower end like a flange corresponding to a connection portion of a pipe joint to cover a bump formed at the boundary between the post of the abutment and the cuff. It includes part 11. For example, the connector 10 may have a hat structure with a brim attached along the circumference. In addition, the shape except for the horizontal extension part 11 may be formed in a shape similar to a cup in which the top and bottom are open, or a cylindrical structure in which the outer diameter and the inner diameter decrease from the bottom to the top.

Both the outer diameter and the inner diameter of the connector 10 may decrease from the lower end to the upper end corresponding to the outer surface (inclination from the lower end to the upper end) of the post of the abutment. Alternatively, only the inner diameter may decrease along the outer surface of the post of the abutment.

Figure 3 is a view schematically showing an abutment and an abutment screw to which the connector according to the first embodiment of the present invention is coupled, the left side is an exploded cross-sectional view, the right side is an assembly cross-sectional view.

As shown in FIG. 3, the abutment 20 is coupled and fixed to the fixture by an abutment screw 30 fastened to a fixture (not shown) placed in the alveolar bone. The abutment 20 includes a coupling portion 21 partially or entirely inserted into the fixture, a cuff 22 formed on the coupling portion 21 and partially or entirely covered by the gum, It is divided into three parts including the post 23 formed on the upper part of the cuff 22 and restored by the crown. In addition, a barrier 22a having a step is formed at the boundary between the cuff 22 and the post 23 .

As shown in FIG. 3, the abutment screw 30 is formed on the body 31, which has a threaded portion 31a formed on its outer circumferential surface and is screwed to the fixture, and formed on the upper part of the body 31 and coupled to the abutment 20. It includes a head 32 protrudingly coupled to the top of the post 23 of the abutment 20 in the state of being. The head 32 protruding and coupled to the upper portion of the post 23 of the abutment 20 is inserted into a receiving portion formed in a crown (not shown) together with the post 23 and is restored by the crown.

As shown in Figure 3 on the lower outer circumferential surface of the body 31, a threaded portion 31a is formed to be screwed into the fixture. In addition, a neck portion 31b having a tapered structure in which an outer diameter increases as the body 31 approaches the head 32 is formed. The threaded portion 31a may be formed only on a lower portion of the body 31 or may extend to the lower portion of the neck portion 31b.

The neck portion 31b is engaged with the inner locking jaw 23a of the post 23 of the abutment 20 in the downward direction. An inner locking jaw 23a having a tapered structure is formed on the upper inner surface of the post 23 of the abutment 20 to correspond to the neck portion 31b. The neck portion 31b is installed to face the inner locking jaw 23a formed on the post 23 of the abutment 20 and is closely coupled in the downward direction. The neck portion 31b has a structure in which the outer diameter increases toward the top, and correspondingly, the inner locking jaw 23a also has a structure in which the inner diameter increases toward the top. As shown in the cross section of FIG. 3, the neck portion 31b and the inner locking jaw 23a are each formed in a tapered structure having an inclined surface with an outer diameter or an inner diameter increasing toward the top.

As shown in FIG. 3, the head 32 protrudes and is coupled to the upper part of the post 23 of the abutment 20 and is received inside the crown (not shown) together with the post 23 of the abutment 20. As a part, as opposed to the neck part (31b), the outer surface has a tapered structure having a slope so that the diameter decreases from the bottom to the top, so that it can be stably accommodated in the receiving part of the crown.

A hollow 20a through which the abutment screw 30 is received is formed at the center of the abutment 20 . An inner locking jaw 23a may be formed in the hollow 20a so that the head 32 of the abutment screw 30 is lowered. The head 32 and the body 31 are formed to have different diameters from each other up and down with the inner locking jaw 23a as a boundary. For example, based on the inner locking jaw 23a, the upper part is formed to have a larger inner diameter than the lower part so that the head 32 of the abutment screw 30 can be accommodated therein, and the abutment accommodated in the hollow 20a The head 32 of the screw 30 is supported downward by the inner locking jaw 23a.

As shown in FIG. 3 , the post 23 has a tapered structure in which the outer diameter decreases from the upper surface (lower end) to the upper end of the barrier 22a formed at the boundary between the cuff 22 and the post 23 . The inclination 'a1' of the connector 10 will be formed at the same inclination (inclination angle) as the inclination 'a2' of the post 23 with respect to the axis so as to closely adhere to the outer surface of the post 23 of the abutment 20. can In addition, the height 'h1' of the connector 10 is the total height 'h2' of the height of the post 23 of the abutment 20 and the height of the head 32 of the abutment screw 30 (the barrier 22a). It may be formed at the same height as the height from to the top surface of the head 32).

A driver groove 32a is formed on the top of the head 32 so that a driver tool used to fasten and fix the abutment screw 30 to the fixture is coupled, and the driver groove 32a communicates with the driver groove 32a. On the upper part of the coupling groove portion in which various structures for engaging and fixing the crown to the post 23 of the abutment 20 and the head 32 of the abutment screw 30 are fastened and fixed without using an adhesive. (32b) is formed. At this time, as shown in Figure 3, the coupling groove (32b), for example, may be made of a female screw structure.

Figure 4 is a view schematically showing a dental implant system to which the connector according to the first embodiment of the present invention is applied, the left side is an exploded cross-sectional view, and the right side is an assembled cross-sectional view.

1 to 4, the body 31 of the abutment screw 30 is fastened and fixed to the fixture 40 through the hollow 20a of the abutment 20, and thus the abutment ( 20) is coupled and fixed to the fixture 40 by the abutment screw 30. In addition, the side surface of the post 23 of the abutment 20, the side surface of the head 32 of the abutment screw 30 protruding to the top of the post 23, and the upper surface of the bump 22a are covered. So that the connector 10 is coupled.

Figure 5 is a view schematically showing a dental implant system in which a crown is coupled and fixed to the structure shown in Figure 4, the left side is an exploded cross-sectional view, the right side is an assembled cross-sectional view.

1 to 5, a state in which the connector 10 is coupled to simultaneously cover the side surface of the post 23 of the abutment 20 and the side surface of the head 32 of the abutment screw 30 In order to repair the post 23 and the head 32 of the abutment screw 30, a crown 60 is coupled to cover the connector 10. At this time, the crown 60 is fixed through the engaging structure 50 fastened to the coupling groove 32b formed in the head 32 of the abutment screw 30.

As shown in FIGS. 4 and 5, the engaging structure 50 has a body 51 screwed into the coupling groove 32b formed in the head 32 of the abutment screw 30, and an upper portion of the body 51. and a formed head 52 . The head 52 has a larger outer diameter than the body 51 and is accommodated inside the receiving portion 61 of the crown 60 to engage and support the inner surface of the receiving portion 61 of the crown 60 in the downward direction.

The head 52 of the hooking structure 50 may have a tapered structure (inclined surface) in which an outer diameter increases from the upper end of the body 51 to the upper side. As another example, the lower surface of the head 52 may be made of a horizontal surface corresponding to the upper surface of the head 32 of the abutment screw 30. As shown in FIG. 5 , the head 52 of the hooking structure 50 is accommodated in the receiving portion 61 of the crown 60 . And it is caught in the lower direction on the inner wall of the receiving portion 61 of the crown (60). Accordingly, the crown 60 may be coupled and fixed to the outer surface of the post 23 of the abutment 20 and the head 32 of the abutment screw 30 by the head 52 of the holding structure 50. there is.

As shown in FIGS. 4 and 5, the engaging structure 50 is a driver to which a driver tool is coupled to fix the engaging structure 50 to the coupling groove 32b formed in the head 32 of the abutment screw 30. A groove 52a may be formed. An entry hole 62 through which the locking structure 50 enters is formed in the crown 60, and the entry hole 62 is fixed by fastening the locking structure 50 to the head 32 of the abutment screw 30. Then, it is buried using a filler such as resin.

Example 2

6 is a cross-sectional view schematically showing a connector according to a second embodiment of the present invention, and FIG. 7 is a cross-sectional view schematically showing an abutment and an abutment screw to which the connector shown in FIG. 6 is coupled. In FIG. 7, the left side is an exploded cross-sectional view, and the right side is an assembled cross-sectional view.

Referring to FIGS. 6 and 7 , the connector 70 according to the second embodiment of the present invention includes a horizontal extension part 71 and two inner protrusions 72 and 73 formed vertically and horizontally on an inner surface. In addition, anchor grooves 83a and 92a are formed on the outer surface of the post 83 of the abutment 80 and the outer surface of the head 92 of the abutment screw 90 corresponding to the two inner protrusions 72 and 73, respectively. is formed

The inner protrusions 72 and 73 may have an annular structure on the inner surface of the connector 70 . Correspondingly, the anchor grooves 83a and 92a are also formed in an annular structure along the circumferential surface of the post 83 of the abutment 80 and the circumferential surface of the head 92 of the abutment screw 90. The anchor groove portion 83a formed in the post 83 of the abutment 80 may be formed in the lower part of the post 83 of the abutment 80 to be close to the upper surface of the bump 82a. Alternatively, at least a portion of the anchor groove 83a, for example, the lower portion, may extend to the upper portion of the cuff 82 by invading the barrier 82a.

FIG. 8 schematically shows a state in which connectors are coupled to the structure of FIG. 7 . The left side is an exploded cross-sectional view of a separated state and the right side is an assembled cross-sectional view of an assembled state.

6 to 8, when the connector 70 is coupled to cover the outer surface of the post 83 of the abutment 80, the inner protrusion 72 is the head 92 of the abutment screw 90 The inner protrusion 73 is coupled to the anchor groove 83a formed in the post 83.

Meanwhile, in FIG. 6 , only one inner protrusion may be formed. Correspondingly, the anchor groove may also be formed only on one part of the head of the abutment screw or the post of the abutment. In this way, the number of inner protrusions and anchor grooves is not limited.

Example 3

Figure 9 is a schematic diagram showing a connector according to a third embodiment of the present invention, Figure 9 (a) is a front view of the connector, Figure 9 (b) is a cross-sectional view of the connector shown in (a).

Referring to FIG. 9 , a connector 100 according to a third embodiment of the present invention includes a horizontal extension part 101 and two inner protrusions 102 and 103 . And it further includes an extension 104 extending downward on at least one side.

FIG. 10 is a view schematically illustrating a state in which connectors are coupled to the structure of FIG. 9 . The left side is an exploded cross-sectional view of a disconnected state, and the right side is an assembled cross-sectional view of an assembled state.

9 and 10, the post 113 of the abutment 110 and the head 122 of the abutment screw 120 correspond to the two inner protrusions 102 and 103, the anchor groove portion 113a, 122a) is formed. In addition, an anti-rotation groove 112b is formed in the cuff 112 of the abutment 110 to be connected to (communicate with) a portion of the anchor groove 113a corresponding to the extension 104 of the connector 100. For example, the anti-rotation groove 112b extends downward from the barrier 112a to an upper portion of the cuff 112 .

One or more extensions 104 may be formed to extend downward from the lower end of the connector 100 . Correspondingly, one or a plurality of anti-rotation grooves 112b may be formed. The anti-rotation groove 112b may be formed deeper than the depth of the anchor groove 113a as the cuff 112 has a relatively larger diameter than the post 113 .

11 is a view schematically showing a state in which a crown is coupled to the structure shown in FIG. 10 . Here, the left side represents a state where the crown is separated, and the right side represents a state where the crown is assembled.

As shown in FIGS. 10 and 11, the crown 130 is coupled while the connector 100 is coupled to cover the post 113 of the abutment 110 and the head 122 of the abutment screw 120. do. At this time, the anti-rotation protrusion 132 extending downward from the bottom of the crown 130 is coupled to the anti-rotation groove 112b.

As shown in FIG. 11 , the extension part 104 formed in the connector 100 is coupled to the anti-rotation groove 112b before the anti-rotation protrusion 132 of the crown 130 is coupled. Accordingly, the anti-rotation protrusion 132 may be coupled to the anti-rotation groove 112b to cover the upper portion of the extension 104 .

In a state where the crown 130 is coupled so that the post 113 of the abutment 110 and the head 122 of the abutment screw 120 are restored, the structure is engaged through the entry hole 131 formed in the crown 130. (140) into the interior. Thereafter, the body of the engaging structure 140 is fastened to the coupling groove 122a formed on the upper part of the head 122 of the abutment screw 120 to secure the crown 130 to the post 113 of the abutment 110. It is stably coupled and fixed to the head 122 of the abutment screw 120.

As such, the anti-rotation protrusion 132 of the crown 130 protruding inwardly is coupled and fixed to the anti-rotation groove 112b, so that the crown 130 is prevented from rotating around the abutment 110, Falling out of the abutment 110 can be prevented.

Example 4

12 is a schematic cross-sectional view of a connector according to a fourth embodiment of the present invention.

Referring to FIG. 12 , the connector 150 according to the fourth embodiment of the present invention has a structure divided into a lower part 151 and an upper part 152 . In the lower part 151, a horizontal extension part 151a may be formed around the lower end, and an inner protrusion 151b may be formed on the hollow inner surface. One or a plurality of inner protrusions 152a may be formed on the hollow inner surface of the upper part 152 .

13 are views schematically showing a state in which the connector shown in FIG. 12 is coupled to an abutment, the left side is a cross-sectional view of a separated state, and the right side is a cross-sectional view of an assembled state.

12 and 13, the lower part 151 is coupled to cover the side surface of the post 163 of the abutment 160, and the upper part 152 is the head 172 of the abutment screw 170 ) are combined to cover the side of the The lower part 151 and the upper part 152 of the connector 150 may be independently manufactured. Alternatively, it may be manufactured together integrally and then divided through cutting.

As shown in FIG. 13, as an example, the connector 150 attaches the lower part 151 to the post 163 of the abutment 160 while the abutment screw 170 is coupled to the abutment 160. combine Then, the upper part 152 may be sequentially coupled to cover the side of the head 172 of the abutment screw 170 protruding upward to the upper part of the post 163 of the abutment 160 .

14 to 16 are diagrams schematically illustrating a coupling (installation) method of the connector shown in FIG. 12 according to another example. Here, FIG. 14 is a cross-sectional view showing the process of coupling the lower part to the post of the abutment, FIG. 15 is a cross-sectional view showing the process of coupling the upper part to the head of the abutment screw, and FIG. 16 is the coupling process of the upper part A cross-sectional view showing the process of coupling the abutment screw to the abutment to which the lower part is coupled.

As shown in FIG. 14 , the lower part 151 of the connector 150 is coupled to surround the side surface of the post 163 of the abutment 160 . At this time, the horizontal extension part 151a formed on the lower part 151 covers the bump 162a between the post 163 and the cuff 162, and the inner protrusion 151b extends the post 163 to the upper side of the bump 162a. ) is pressurized and coupled to the anchor groove portion 163a formed at the bottom of the.

15, the upper part 152 of the connector 150 is coupled to surround the side of the head 172 of the abutment screw 170. At this time, the inner protrusion 152a formed in the upper part 152 is male and female coupled to the anchor groove 172a formed in the head 172 of the abutment screw 170.

As shown in FIGS. 14 and 15 , the abutment 160 to which the lower part 151 is coupled and the abutment screw 170 to which the upper part 152 is coupled are independently coupled to each other. That is, the body 171 of the abutment screw 170 to which the upper part 152 is coupled passes through the hollow of the abutment 160 and is fastened to the fixture to form an abutment to which the upper part 152 is coupled The screw 170 can be easily coupled and fixed to the abutment 160 to which the lower part 151 is coupled.

As described above, in the connector according to the second to fourth embodiments of the present invention, the inner protrusion is formed around the inner surface of the connector to be coupled to the anchor groove formed in the post of the abutment and/or the head of the abutment screw. The formed structure has been described as an example. However, this is an example, and the opposite structure is also possible. For example, an anchor protrusion is formed on the post of the abutment and/or the head of the abutment screw, and correspondingly, an inner groove portion to which the anchor protrusion is coupled may be formed on the inner surface of the connector. The inner protrusion formed on the connector may be formed in a bar-like structure in addition to the annular protrusion. The inner surface of the connector may be formed by mixing an inner protrusion and an inner groove. Of course, correspondingly, the anchor protrusion and the anchor groove may be mixed and formed in the post of the abutment and the head of the abutment screw.

In the dental implant system, the post of the abutment and the head of the abutment screw protrudingly coupled to the top of the post of the abutment may have the same external slope as the external slope of the post. Accordingly, when the connector is coupled to the outer surface of the post of the abutment and the head of the abutment screw, the connector may not find its place. Even if you have found your place, you may get out of the place you are supposed to be due to external shocks or stimuli. To prevent this, an inner protrusion (or inner groove) is formed on the inner surface of the connector, and an anchor groove (or anchor protrusion) is formed on the outer surface of the post of the abutment and/or the head of the abutment screw to secure the connector to the abutment. It can be stably coupled and fixed to the outer surface of the post of the ment and/or the head of the abutment screw.

Operation of the connector can be made easier due to the inner protrusion formed on the connector. The connector is manufactured in micro units and its thickness is relatively thin, so it is not easy to manipulate. However, as in Embodiments 2 to 4 of the present invention, by forming the inner protrusion on the inner surface of the connector, the portion where the inner protrusion is formed is partially thickened to facilitate manipulation. As another example, the upper and lower ends of the connector may be formed thicker than other parts, or a ring structured plastic material or Nitinol (Ni-Ti alloy) may be coupled to the upper and lower ends.

Connectors according to embodiments of the present invention may be made of a rubber material such as synthetic rubber, silicone rubber, urethane rubber, etc. having an elastic property that expands and contracts in response to a change in volume. It may be made of a material having elastic properties by using its own bending, such as plastic material or Nitinol (Ni-Ti alloy). For example, when using a plastic material or a hard metal material (alloy) that does not change in volume, a rubber material may be coated on the outer surface.

When the connector is made of a rubber material, it is installed between the crown and the post of the abutment or between the crown and the abutment screw head and the post of the abutment, and functions as an elastic body that absorbs the occlusal force transmitted from the crown. The connector is made of high-performance polymer (High-Performance Polymer, HPP) that has elasticity not by volume change but by its own bending, for example, metal materials such as PEEK (polyaryl ether ketone) or Nitinol (Ni-Ti alloy). In this case, a side opening such as a slit groove may be formed in the connector to facilitate operation of the connector. At this time, a plurality of side slits may be formed. If the connector is to be formed using plastic or a hard metal material, the plastic or metal material may be used as a base, and at least one surface of the base may be coated with a rubber material.

As above, although preferred embodiments of the present invention have been described and illustrated using specific terms, such terms are only intended to clearly describe the present invention. And, it is obvious that various changes and changes can be made to the embodiments of the present invention and the described terms without departing from the technical spirit and scope of the following claims. Such modified embodiments should not be individually understood from the spirit and scope of the present invention, and should be said to fall within the scope of the claims of the present invention.

10, 70, 100, 150: connector 10a: hollow
11, 71, 101, 151a: horizontal extension part 20, 80, 110, 160: abutment
21, 81, 111, 161: coupling part 22, 82, 112, 162: cuff
22a, 82a, 112a, 162a: bump 23, 83, 113, 163: post
23a: inner locking jaw 30, 90, 120, 170: abutment screw
31, 51, 91, 121, 171: Body 31a: Thread
31b: Neck 32, 52, 92, 122, 172: Head
32a: driver groove 32b, 122a: coupling groove
40: fixture 50, 140: holding structure (abutment cap)
51: body 52: head
52a: driver groove 60, 130: crown
61: receiving part 62, 131: entry hole
72, 73, 102, 103, 151b: medial protrusion
83a, 92a, 113a, 122a, 163a, 172a: anchor groove
104: extension 112b: anti-rotation groove
132: anti-rotation protrusion 151: lower part
152: upper part

Claims (13)

an abutment coupled to the fixture;
an abutment screw including a head protruding above the post of the abutment; and
a connector covered on outer surfaces of the post of the abutment and the head of the abutment screw; including,
In the connector, a portion surrounding the outer surface of the head of the abutment screw and a portion surrounding the outer surface of the post of the abutment are separated from each other or formed integrally with each other,
Dental implant system.
According to claim 1,
The connector has a hollow so as to be covered on the outer surface of the post of the abutment and the head of the abutment screw, and the inner surface of the hollow of the connector is on the outer surface of the post of the abutment and the head of the abutment screw. Correspondingly, the dental implant system is formed so that the diameter decreases toward the top, and a horizontal extension portion covering a barrier formed between the post of the abutment and the cuff of the abutment is formed at the lower end.
According to claim 1,
The dental implant system of claim 1 , wherein the connector has an inner surface inclination equal to an outer surface inclination of the post of the abutment with respect to an axial line of the post of the abutment.
According to claim 1,
One or a plurality of anchor grooves or anchor protrusions are formed on at least one of the outer surface of the post of the abutment or the outer surface of the head of the abutment screw, and the inner surface of the connector corresponds to the anchor groove or anchor protrusion. A dental implant system having an inner protrusion or an inner groove coupled to the anchor groove or the anchor protrusion.
According to claim 4,
The anchor groove or anchor protrusion formed on the post of the abutment extends from the lower part of the post of the abutment to the upper part of the cuff of the abutment dental implant system.
According to claim 1,
A dental implant system in which a driver groove is formed on the top of the head of the abutment screw.
According to claim 1,
A coupling groove is formed on the upper part of the head of the abutment screw,
A locking structure accommodated in the receiving part of the crown coupled to restore the post of the abutment and the head of the abutment screw is coupled and fixed to the coupling groove,
The inner surface of the receiving portion of the crown is engaged downward by the head of the holding structure and coupled and fixed to the post of the abutment and the head of the abutment screw,
Dental implant system.
According to claim 7,
The holding structure is a dental implant system formed to have a horizontal surface so that the lower surface of the head comes into contact with the upper surface of the head of the abutment screw, or to have an inclined surface whose outer diameter increases from the upper surface of the head of the abutment screw to the upper part. .
According to claim 1,
An anti-rotation groove is formed on the abutment to extend from a bump between the post of the abutment and the cuff of the abutment to an upper portion of the cuff, and an extension coupled to the anti-rotation groove is formed at a lower portion of the connector. A dental implant system in which an anti-rotation protrusion coupled to the anti-rotation groove is formed at the lower part of the crown coupled to restore the post of the abutment and the head of the abutment screw.
delete delete According to claim 1,
The connector is a dental implant system made of a rubber material, a plastic material, a high-performance polymer material, or a metal material.
According to claim 1,
Dental implant system formed with one or a plurality of side slits in the connector.