KR102568818B1 - Connector and dental implant system having the same - Google Patents

Abstract

The present invention relates to a dental implant system, and more particularly, to a connector for filling a gap between a crown (artificial tooth/prosthesis) and an abutment to block the inflow of foreign substances and to absorb and buffer occlusal force, and for dentistry having the same It is about the implant system.
According to the connector and dental implant system according to the present invention, in the implant system for coupling and fixing the crown to the abutment by using the hooking structure, the gap generated between the crown and the abutment due to the step caused by the hooking structure is removed by the connector. It is possible to prevent the inflow of foreign substances such as food debris by filling it stably using.

Description

Connector and dental implant system having the same {CONNECTOR AND DENTAL IMPLANT SYSTEM HAVING THE SAME}

The present invention relates to a dental implant system, and more particularly, to a connector for filling a gap between a crown (artificial tooth/prosthesis) and an abutment to block the inflow of foreign substances and to absorb and buffer occlusal force, and for dentistry having the same It is about the implant 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 (object) 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 stably solved. It is to provide a connector capable of preventing the inflow of foreign substances by filling the connector and a dental implant system having the same.

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 more closely attached to the outer surface of the abutment by eliminating the step caused by the locking structure. An object of the present invention is to provide a connector capable of completely eliminating a gap generated between a crown and an abutment even when a locking structure exists by ensuring close contact with the connector and a dental implant system having the same.

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 connector in which a connector installed to be filled is stably fixed to the outer surface of an abutment without using an adhesive to prevent falling off, and a dental implant system having the same.

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 provided with a hollow upper and lower parts open so that the crown is covered on the outer surface of the post of the abutment to be restored, and corresponds to the outer surface of the post of the abutment Thus, a connector having a structure in which the diameter decreases from the lower end to the upper end, and a horizontal extension part covering a barrier between the post of the abutment and the cuff of the abutment is formed at the lower end.

In addition, the inner surface of the hollow may have the same slope as the outer slope of the post of the abutment from the lower end to the upper end based on the axis of the post of the abutment.

In addition, one or a plurality of anchor grooves or anchor protrusions may be formed on the outer surface of the post of the abutment, and inner protrusions or inner grooves coupled to the anchor grooves or the anchor protrusions may be formed on the hollow inner surface. .

In addition, any one of the plurality of anchor grooves or the plurality of anchor protrusions may extend from a lower portion of the post of the abutment to an upper portion of the cuff beyond the barrier.

In addition, a driver groove may be formed on the upper part of the post of the abutment.

In addition, a coupling groove is formed on the upper part of the post of the abutment, and a locking structure accommodated in the receiving portion of the crown is coupled and fixed to the coupling groove, and the inner surface of the receiving portion of the crown is of the post of the abutment. It is pressed downward by the head of the holding structure protruding upward and coupled thereto, and may be coupled and fixed to the post of the abutment.

In addition, the circumference of the head of the holding structure may protrude outward from the upper circumference of the post of the abutment.

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 post of the abutment, or may be formed to have an inclined surface whose outer diameter increases from the upper surface of the post of the abutment to the upper part.

In addition, an anti-rotation groove may be formed in an upper portion of the cuff in the bump, and an extension portion coupled to the anti-rotation groove may be formed in a lower portion of the connector.

In addition, an anti-rotation protrusion coupled to the anti-rotation groove may be formed at a lower end of the crown.

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, the connector may be formed with one or a plurality of side slits.

In addition, the present invention according to another embodiment for achieving the above object provides a dental implant system including the above connector.

As described above, according to the connector according to the embodiment of the present invention, in the implant system for coupling and fixing the crown to the abutment using the locking structure, a step caused by the locking structure occurs between the crown and the abutment. The inflow of foreign substances such as food debris can be prevented by stably filling the gap using a connector.

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

In addition, according to the connector 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, it is installed to fill the gap between the crown and the abutment due to the locking structure By forming an inner protrusion (or inner groove) on the connector and coupling 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 the use of adhesives. It is possible to prevent the connector from coming off from the post.

In addition, according to the connector according to an embodiment of the present invention, 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 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 connector according to an embodiment of the present invention, the connector installed to fill the gap between the crown and the abutment due to the step caused by the locking structure is formed of a material having elasticity such as rubber, thereby repeatedly applied By absorbing the occlusal force, naturalness like natural teeth and fracture of abutments or fixtures can be prevented.

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 longitudinal sectional view showing an abutment to which the connector shown in FIG. 1 is to be coupled;
Figure 4 is an assembled cross-sectional view showing a dental implant system to which the connector according to the first embodiment of the present invention is applied.
Figure 5 is an exploded cross-sectional view of Figure 4;
6 is a longitudinal cross-sectional view showing a connector according to a second embodiment of the present invention;
7 is a longitudinal sectional view showing an abutment to which the connector shown in FIG. 6 is coupled;
8 is a longitudinal cross-sectional view showing a state in which a connector is coupled to the abutment shown in FIG. 7;
9 is a longitudinal sectional view showing a connector according to a third embodiment of the present invention;
10 is a longitudinal sectional view showing a connector according to a fourth embodiment of the present invention;
11 is a longitudinal sectional view showing an abutment to which the connector shown in FIG. 10 is coupled;
12 is a longitudinal sectional view showing a connector according to a fifth embodiment of the present invention;
Fig. 13 is a longitudinal sectional view showing an abutment to which the connector shown in Fig. 12 is coupled;
14 is a longitudinal sectional view showing a state in which a crown is coupled to the structure shown in FIG. 13;

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 an embodiment of the present invention, the connector is formed to correspond to the post shape of the abutment in order to closely fill the space between the crown and the abutment using the connector. Preferably, it is formed to have a shape corresponding to the shape of the outer surface of the post of the abutment.

Hereinafter, specific embodiments of the connector 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 tapered structure in which the outer diameter decreases from the lower end to the upper end in correspondence to the shape of the post of the abutment. This decreasing taper structure can be made.

The connector 10 has a lower and upper portion open to form a hollow 10a penetrating vertically. The post of the abutment is inserted into the hollow 10a. The hollow 10a may have a structure in which the inner diameter decreases from the lower end to the upper end in correspondence with the outer diameter of the post of the abutment to be accommodated so that the inner surface is in close contact with the outer surface of the post of the abutment.

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.

3 is a cross-sectional view schematically showing an abutment to which the connector shown in FIG. 1 is to be coupled.

2 and 3, the abutment 20 is an abutment screw-integrated abutment, for example, and a screw 21a fastened to a fixture (not shown) is integrally formed with the coupling part 21. do. A cuff 22 partially or entirely covered by gums is formed on the upper part of the coupling part 21, and a post 23 repaired by a crown is formed on the upper part of the cuff 22.

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 Also, the height 'h1' of the connector 10 may be formed at the same height as the height 'h2' of the post 23 (the height from the barrier 22a to the top surface of the post 23).

As the post 23 is integrally formed with the screw 21a, a driver groove 23a for fastening or loosening the post 23 using a driver tool on the upper part in order to directly fasten the abutment 20 to the fixture. is formed, and on top of the driver groove 23a to communicate with the driver groove 23a, a coupling groove portion 23b in which various structures for engaging and fixing the crown to the post 23 are fastened and fixed without using an adhesive ) is formed. At this time, the coupling groove 23b may be made of a female screw structure as shown in FIG.

FIG. 4 is a schematic cross-sectional view of an assembled dental implant system to which a connector according to the first embodiment of the present invention is applied, and FIG. 5 is an exploded cross-sectional view of FIG. 4 .

1 to 5, the screw 21a of the abutment 20 is fastened and fixed to the fixture 31 implanted in the alveolar bone. And the connector 10 is coupled to cover the outer surface of the post 23 of the abutment 20, preferably the side surface of the post 23 and the upper surface of the barrier 22a.

In a state where the connector 10 is coupled to the post 23 of the abutment 20, the horizontal extension 11 of the connector 10 covers the upper surface of the bump 22a. In a state where the crown 32 is coupled to cover the connector 10 in order to repair the post 23, the crown 32 is secured through the locking structure 33 fastened to the coupling groove 23b of the post 23. The post 23 is fixed in a restored state.

As shown in FIGS. 4 and 5 , the engaging structure 33 may have, for example, a 'T'-shaped cross section. The holding structure 33 includes a body 331 screwed into the coupling groove 23b of the post 23 and a head 332 formed on the upper portion of the body 331 . The head 332 has a larger outer diameter than the body 331 and is hooked downward to the upper end of the post 23 .

As shown in FIGS. 4 and 5 , the lower surface of the head 332 may be formed to have a horizontal surface so as to be in close contact with the upper surface of the post 23 . As another example, the lower surface of the head 332 may be formed to have a tapered structure in which an outer diameter increases from the top of the body 331 to the top, that is, to have an inclined surface in cross section. The head 332 of the hooking structure 33 enters and is accommodated in the receiving portion 32b of the crown 32 . The head 332 of the engaging structure 33 presses the crown 32 downward in a state where the lower end is coupled so that the crown 32 covers the outer surface of the post 23 . Accordingly, the crown 32 is coupled and fixed to the post 23 by the head 332 .

As shown in FIGS. 4 and 5, the locking structure 33 is a driver groove into which a driver tool is coupled to fix the locking structure 33 to the coupling groove 23b formed in the post 23 of the abutment 20. (332a) may be formed. An entry hole 32a through which the locking structure 33 enters is formed in the crown 32, and the entry hole 32a fixes the locking structure 33 to the post 23 of the abutment 20. It is buried using fillers such as

Example 2

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

Referring to FIG. 6, the connector 40 according to the second embodiment of the present invention is hollow in the center to be coupled to the post of the abutment, like the connector 10 according to the first embodiment shown in FIGS. 1 and 2 ( 40a) is formed, and a horizontal extension 41 is formed at the lower end. And an annular (annular) inner protrusion 42 is formed on the inner wall of the hollow 40a.

7 is a cross-sectional view schematically showing an abutment to which the connector shown in FIG. 6 is coupled, and FIG. 8 is a cross-sectional view showing a state in which the connector is coupled to the abutment shown in FIG. 7 .

6 to 8 , the abutment 50 includes a coupling portion 51 integrally formed with a screw 51a, a cuff 52, and a post 53. At the top of the post 53, the driver groove 53a and the coupling groove 53b are formed to communicate vertically, and on the outer circumferential surface, one or a plurality of circumferential grooves in an annular structure along the circumferential surface, that is, the anchor groove 53c is formed

As shown in FIG. 8, in the state where the connector 40 is covered so as to cover the outer surface of the post 53 of the abutment 50, the inner protrusion 42 of the connector 10 is formed in the anchor groove 53c formed in the post 53. ) are combined. In this way, in a state in which the connector 40 is coupled to the post 53 of the abutment 50, the inner protrusion 42 of the connector 40 is coupled and fixed to the anchor groove portion 53c, so that the connector 40 is abutted. It can be stably coupled and fixed to the post 53 of the ment 50. Therefore, the connector 40 can be prevented from slipping, flowing, or falling off on the outer surface of the post 53 of the abutment 50 while being coupled to the post 53 of the abutment 50. .

Example 3

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

Referring to FIG. 9 , the connector 60 according to the third embodiment of the present invention is a modified example of the connector 40 according to the second embodiment, and includes a horizontal extension part 61 and an inner protrusion 62 . The inner protrusion 62 includes an annular protrusion 62a having an annular structure to prevent rotation of the post axially while the connector 60 is coupled to the post of the abutment, and a predetermined portion of the annular protrusion 62a. It includes vertical protrusions 62b formed to form a cross-shaped (+) structure.

The vertical protrusion 62b is connected to the annular protrusion 62a to form a cross (+) structure, and may be formed singly or in plural numbers, and is not limited thereto. Although not specifically shown, as shown in Figure 7, an anchor groove portion is formed on the outer surface of the post of the abutment to which the inner protrusion 62 is coupled and fixed in correspondence with the inner protrusion 62. The anchor groove portion may include an annular groove and a vertical groove, including the annular projection 62a and the vertical projection 62b of the inner protrusion 62.

Example 4

10 is a cross-sectional view schematically showing a connector according to a fourth embodiment of the present invention, and FIG. 11 is a cross-sectional view schematically showing an abutment to which the connector shown in FIG. 10 is coupled.

10 and 11, the connector 70 according to the fourth embodiment of the present invention is a modified example of the connector 40 according to the second embodiment, and the horizontal extension part 71 and the inner surface of the connector 70 are formed vertically and horizontally. It includes the inner protrusions 72 and 73 of the dog. Corresponding to the two inner protrusions 72 and 73, two anchor grooves 83c and 83d are formed vertically in the post 83 of the abutment 80.

Both of the two anchor grooves 83c and 83d are formed in an annular structure along the circumferential surface of the post 83 of the abutment 80. And, as shown in FIG. 11, the anchor groove portion 83d formed on the lower side of the two anchor groove portions 83c and 83d is formed on the lower part of the post 83 of the abutment 80 so as to be close to the upper surface of the barrier 82a. can At least a part of the anchor groove 83d formed on the lower side, for example, the lower portion, may extend to the top of the cuff 82 by invading the barrier 83a.

In a state where the connector 70 is coupled to cover the outer surface of the post 83 of the abutment 80, the inner protrusions 72 and 73 are anchor grooves 83c of the abutment 80, as shown in FIG. 83d), respectively, are coupled and fixed. Accordingly, it is possible to improve the fixing force of the connector coupled to the abutment compared to the structure consisting of only one inner protrusion as in the second embodiment shown in FIG. 6 .

Example 5

12 is a cross-sectional view schematically showing a connector according to a fifth embodiment of the present invention, and FIG. 13 is a cross-sectional view schematically showing an abutment to which the connector shown in FIG. 12 is coupled. In Fig. 12, (a) is a front view of the connector, and (b) is a cross-sectional view of the connector shown in (a).

12 and 13, the connector 90 according to the fifth embodiment of the present invention has a horizontal extension part 91 and two inner protrusions 92 and 93 like the connector 70 according to the fourth embodiment. includes And it further includes an extension 94 extending downward on at least one side.

As shown in FIG. 13, two anchor grooves 103c and 103d are formed in the post 103 of the abutment 100 corresponding to the two inner protrusions 92 and 93. In addition, an anti-rotation groove 102b is formed in the cuff 102 of the abutment 100 to be connected to (communicate with) a portion of the anchor groove 103d formed on the lower side corresponding to the extension 94. For example, the anti-rotation groove 102b extends downward from the barrier 102a to an upper part of the cuff 102.

One or more extensions 94 may be formed to extend downward from the lower end of the connector 70 . Correspondingly, one or a plurality of anti-rotation grooves 102b may be formed. As the cuff 102 is formed to have a relatively larger diameter than the post 103, the anti-rotation groove 102b is formed deeper than the depth of the anchor groove 103d formed on the lower side.

14 is a view schematically showing a state in which a crown is coupled to the structure shown in FIG. 13;

As shown in FIG. 14 , in a state in which the connector 90 is coupled to cover the post 103 of the abutment 100, the crown 110 is coupled so that the post 103 is restored. At this time, the anti-rotation protrusion 111 extending downward from the bottom of the crown 110 is coupled to the anti-rotation groove 102b.

As shown in FIG. 14 , the extension part 94 formed in the connector 90 is coupled to the anti-rotation groove 102b before the anti-rotation protrusion 111 of the crown 110 is coupled. Accordingly, the anti-rotation protrusion 111 is coupled to the anti-rotation groove 102b so as to cover the upper portion of the extension part 94 .

In a state in which the crown 110 is coupled so that the post 103 of the abutment 100 is restored, the locking structure 120 enters the inside through the entry hole 110a formed in the crown 110. Then, the crown 110 is stably coupled and fixed to the post 103 of the abutment 100 by fastening to the coupling groove 103b formed on the upper part of the post 103 of the abutment 100.

As such, the anti-rotation protrusion 111 of the crown 110 protruding inwardly is coupled and fixed to the anti-rotation groove 102b, so that the crown 110 is prevented from rotating around the abutment 100, Falling out of the abutment 100 can be prevented.

Connectors according to Embodiments 2 to 5 of the present invention have an inner protrusion to be coupled to the anchor groove formed in the post of the abutment, but 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 an inner groove to which the anchor protrusion is coupled may be formed on the inner surface of the connector correspondingly. The inner protrusion formed on the connector may also have a rod-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, in correspondence with this, the anchor protrusion and the anchor groove may be mixed and formed on the post of the abutment.

In the dental implant system, the post of the abutment is made of a tapered structure. Accordingly, when the connector is coupled to the outer surface of the post of the abutment, 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 to stably couple and fix the connector to the outer surface of the post.

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 5 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, 40, 60, 70, 90: connector
10a, 40a: hollow
11, 41, 61, 71, 91: horizontal extension
20, 50, 80, 100: abutment
21, 51, 81, 101: coupling part
21a, 51a: screw
22, 52, 82, 102: Cuff
22a, 82a, 102a: bump
23, 53, 83, 103: post
23a, 53a, 83a, 103a: driver groove
23b, 53b, 83b, 103b: Coupling groove (female thread)
31: fixture
32, 110: Crown
32a, 110a: entry hole
33, 120: holding structure (abutment cap)
42, 62, 72, 73, 92, 93: medial prominence
53c, 83c, 83d, 103c, 103d: anchor groove
62a: annular protrusion
62b: vertical protrusion
94: extension
102b: anti-rotation groove
111: anti-rotation protrusion
331: body
332: head
332a: driver home

Claims (13)

It has a hollow upper and lower parts open so that the crown is covered on the outer surface of the post of the abutment to be restored, and has a structure in which the diameter decreases from the lower end to the upper end corresponding to the outer surface of the post of the abutment, A horizontal extension part covering the bump between the post of the abutment and the cuff of the abutment is formed at the lower end,
An anti-rotation groove is formed on the upper portion of the cuff from the bump,
An extension coupled to the anti-rotation groove is formed at the bottom,
An anti-rotation protrusion coupled to the anti-rotation groove is formed at the lower end of the crown,
connector.
According to claim 1,
The inner surface of the hollow connector is formed such that the slope from the lower end to the upper end with respect to the axis of the post of the abutment is the same as the slope of the outer surface of the post of the abutment.
According to claim 1,
One or a plurality of anchor grooves or anchor protrusions are formed on the outer surface of the post of the abutment,
On the inner surface of the hollow, an inner protrusion or an inner groove coupled to the anchor groove or the anchor protrusion is formed.
connector.
According to claim 3,
Any one of the plurality of anchor grooves or the plurality of anchor protrusions extends from the lower part of the post of the abutment to the upper part of the cuff beyond the barrier.
According to claim 1,
A connector having a driver groove formed on an upper portion of the post of the abutment.
According to claim 1,
An engaging groove is formed on the upper part of the post of the abutment,
An engaging structure accommodated in the accommodating part of the crown is coupled and fixed to the coupling groove,
The inner surface of the receiving portion of the crown is caught downward by the head of the holding structure protruding to the top of the post of the abutment and coupled and fixed to the post of the abutment.
connector.
According to claim 6,
The head of the holding structure is a connector protruding outwardly from the upper circumference of the post of the abutment.
According to claim 7,
The engaging structure is formed in a horizontal plane such that the lower surface of the head contacts the upper surface of the post of the abutment, or the connector formed to have an inclined surface whose outer diameter increases from the upper surface of the post of the abutment to the upper part.
delete delete According to claim 1,
The connector is made of a rubber material, a plastic material, a high-performance polymer material, or a metal material.
According to claim 11,
A connector formed with one or a plurality of side slits in the connector.
A dental implant comprising the connector of any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 11 or 12 system.