KR102591052B1 - Abutment for dental implant and dental implant system having the same - Google Patents

Abstract

The present invention relates to a dental implant system, and more specifically, to an abutment for a dental implant, which forms an annular protrusion on the post of an abutment to be restored by a crown (artificial tooth/prosthesis) and easily fixes the crown to the abutment without using a separate adhesive or screw member, to prevent the crown from being separated from the post of the abutment, and a dental implant system having the same.

Description

Abutment for dental implant and dental implant system equipped with same {ABUTMENT FOR DENTAL IMPLANT AND DENTAL IMPLANT SYSTEM HAVING THE SAME}

The present invention relates to a dental implant system, and more specifically, to form an annular protrusion on the post of an abutment to be restored by a crown (artificial tooth/prosthesis) without using a separate adhesive or screw member. It relates to an abutment for dental implants that can easily fix a crown to an abutment and prevent the crown from being separated from the post of the abutment, and a dental implant system equipped therewith.

The dental implant system basically consists of a fixture installed in the alveolar bone, an abutment that is fixed to the fixture and supports lateral or horizontal pressure in response to the occlusal force applied during mastication, and an abutment. It includes a crown (artificial tooth) that restores the upper part (post) of the tooth and restores aesthetic beauty similar to natural teeth.

The procedure of this dental implant system is briefly explained as follows. First, a fixture is installed in the alveolar bone of the recipient, an abutment is fixed to the fixture placed in the alveolar bone using an abutment screw, etc., and then a crown is attached to the top of the abutment. Additionally, the crown is attached and fixed using an adhesive (cement or bond) that is harmless to the human body so that the crown does not easily separate from the abutment during mastication.

However, in the existing surgical method of attaching and fixing an artificial tooth to an abutment using adhesive, the adhesive is not completely removed after the procedure and some of it remains, and the remaining adhesive that is not removed causes inflammation around the gums and implants. It causes. As a result, the bone around the screw thread of the fixture may be lost, and in severe cases, side effects may occur, such as having to remove the installed fixture and then perform the implant procedure again.

In a structure where the fixture and abutment are separated, the remaining adhesive can be removed after separating the abutment from the fixture, but in a structure where the fixture and abutment are integrated, the abutment cannot be separated from the fixture, so the remaining adhesive can be removed. cannot be removed. For this reason, in the integrated structure of the fixture and abutment, there is a need to develop technology that can attach and fix the crown to the abutment without using adhesive as much as possible.

KR 10-1445298 B1, 2014. 09. 22. KR 10-1808599 B1, 2017. 12. 07. KR 10-2132353 B1, 2020. 07. 03. KR 10-1924802 B1, 2018. 11. 28.

Domestic Patent No. 10-1445298 and Domestic Patent No. 10-1808599 each provide a structure for connecting a prosthesis (crown) to an abutment using a screw, providing the advantage of not using adhesives. It is a structure in which the bonding force between the prosthesis and the abutment depends only on the screw, and if continuous external force is applied to the prosthesis, the bonding force of the screw may become loose, which may cause a problem in which the bonding force between the prosthesis and the abutment decreases.

In Domestic Patent No. 10-2132353, a coupler is interposed between the prosthesis and the abutment, and in Domestic Patent No. 10-1445298 and Domestic Patent No. 10-1808599, the prosthesis rotates around the abutment and is screwed. Solved the problem of loose bonding force. However, as in Domestic Patent No. 10-1445298 and Domestic Patent No. 10-1808599, the bonding force between the prosthesis and the abutment is structured to depend only on screws, maximizing the bonding force between the prosthesis and the abutment. There may still be limits to what you can do.

In addition, Domestic Patent No. 10-1924802 proposes an implant structure that connects the prosthesis to the upper part of the abutment via a screw bolt, similar to the preceding documents, but Domestic Patent No. 10-1445298 and As in Domestic Patent No. 10-1808599, since the bonding force between the prosthesis and the abutment depends only on the bolt, there may still be limitations in maximizing the bonding force between the prosthesis and the abutment.

In addition, in Domestic Patent No. 10-2132353, unlike the existing implant structure, an additional coupler is installed between the prosthesis and the abutment, and in Domestic Patent No. 10-1924802, a coupler is installed between the prosthesis and the abutment to prevent the prosthesis from flowing. Because an additional cushioning member is installed between the implants, the structure of the implant becomes somewhat more complicated than before, and this may cause the implant procedure to be somewhat more complicated and the procedure time to increase.

Therefore, the present invention was proposed to solve the general problems of the prior art, and the problem (objective) to be solved is to more easily securely attach the crown to the post of the abutment without using a separate adhesive, It also relates to an abutment for dental implants that can stably maintain the bonding force between the crown and the post of the abutment even during repetitive mastication, and to a dental implant system equipped therewith.

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

The present invention according to an embodiment for achieving the above object includes a coupling portion coupled to a fixture; A cuff formed on the upper part of the coupling portion; and a post formed on an upper part of the cuff and restored with a crown, and an abutment for a dental implant having a protrusion of a band-shaped annular structure formed along an outer surface of the post.

Additionally, one or more protrusions may be formed on the outer surface of the post.

Additionally, two protrusions may be formed parallel to each other on the outer surface of the post, and the two protrusions may be formed to have different diameters.

In addition, two protrusions are formed side by side on the outer surface of the post, and among the two protrusions, the protrusion formed on the upper outer surface of the post has a diameter at the apex based on the central axis that bisects the post into left and right. It may be formed to be smaller than the diameter at the apex of the protrusion formed on the lower outer surface of the post.

In addition, the protrusion formed in the lower part and the protrusion formed in the upper part may each be formed so that the upper end has a gentle slope compared to the lower end with respect to the apex.

Additionally, an abutment screw may be formed integrally with the lower portion of the coupling portion to fasten and secure the coupling portion to the fixture.

Additionally, a hollow may be formed in the post, the cuff, and the coupling portion to allow an abutment screw to penetrate and secure the coupling portion to the fixture.

Additionally, the abutment screw may have a head portion protruding from the top of the post.

Additionally, a protrusion having an annular structure in a band shape may be formed along the circumference of the outer surface of the head portion of the abutment screw.

Additionally, the protrusion of the annular structure formed on the outer surface of the head portion may be formed to have a smaller diameter than the protrusion of the annular structure formed on the outer surface of the post.

In addition, the present invention according to another embodiment for achieving the above object includes the above-mentioned abutment for dental implant; a sleeve coupled to the post of the dental implant abutment to cover the outer surface of the post; and a crown coupled to the sleeve to cover the sleeve.

In addition, a receiving space in which the post is accommodated is formed in the sleeve, and an inner surface of the receiving space is coupled to a protrusion of the annular structure formed on the outer surface of the post corresponding to the protrusion of the annular structure formed on the outer surface of the post. A groove may be formed.

In addition, the crown is formed with a receiving space for receiving the sleeve, one or a plurality of grooves are formed on the inner surface of the receiving space of the crown, and an outer surface of the sleeve is formed on the inner surface of the receiving space of the crown. An outer groove portion coupled to the groove portion formed on the inner surface of the receiving space of the crown may be formed in response to the groove portion.

In addition, the abutment for dental implants has a hollow formed in the center, and can be fastened and fixed to the fixture through an abutment screw that penetrates the hollow of the abutment for dental implants.

Additionally, the abutment screw may have a head portion protruding above the post, and a protrusion having a band-shaped annular structure may be formed on the head portion protruding above the post.

In addition, the sleeve is formed with an accommodating space for accommodating the head and the post, and in the accommodating space of the sleeve, a protrusion with a ring-shaped structure formed on the head and a protrusion with a ring-shaped structure formed on the outer surface of the post are provided, respectively. An inner groove to be joined may be formed.

Additionally, a slit may be formed in the sleeve so as to extend from the outer surface to the receiving space of the sleeve.

Additionally, the opening may be formed vertically, horizontally, or diagonally.

As described above, according to the abutment for dental implant according to an embodiment of the present invention, the outer surface of the post of the abutment has a protrusion (step) having a curve (step) in the vertical direction (vertical direction), especially an annular structure. By forming a protrusion (a structure in which the upper and lower parts, based on the apex, have a rounded surface of a predetermined curvature based on the outer surface of the post), when the crown is connected to the post of the abutment, the rounded surface provides a smoother and more stable method (circle- It can be connected by touch), and when the crown is connected to the post of the abutment, the crown can be easily separated from the post and prevent it from coming off.

In addition, according to the dental implant system according to an embodiment of the present invention, it further includes a sleeve installed between the crown and the post to cover the post, and the sleeve is caught in the vertical direction corresponding to the structure formed on the outer surface of the post. By providing a possible internal structure on the inner surface of the receiving space where the post is inserted, the crown can be gently coupled and fixed to the post of the abutment and prevent the crown from being separated.

In addition, according to the dental implant system according to an embodiment of the present invention, the crown is coupled to the structure formed on the inner surface of the receiving space of the crown in response to the shape of the structure (protrusion or groove) formed on the inner surface of the receiving space of the crown. By providing an outer structure that can be caught in the vertical direction on the outer surface of the crown, the crown can be smoothly fixed to the post through the sleeve without using adhesive, and while the crown is coupled to the post, it can be easily separated from the post and separated. You can prevent it from happening.

In addition, according to the dental implant system according to an embodiment of the present invention, it further includes an abutment screw for fastening and fixing the abutment to the fixture, wherein the head of the abutment screw protrudes above the post of the abutment. By forming a protrusion-like structure curved in the vertical direction on the head portion, the crown coupled to cover the post can be prevented from being easily separated from the post.

In addition, according to the dental implant system according to an embodiment of the present invention, the sleeve is formed of metal, plastic (engineering plastic), synthetic rubber, silicone rubber, etc., so that the mechanical bonding force can be increased depending on the material used. , or by providing elasticity between the crown and the post of the abutment, it is possible to stably absorb the occlusal force caused by repetitive mastication, effectively preventing fracture of the abutment, abutment screw, or fixture.

1 is a view showing an abutment according to Example 1 of the present invention.
Figure 2 is a view showing an abutment according to Example 2 of the present invention.
Figure 3 is an enlarged view of the front view shown in Figure 2.
Figure 4 is a diagram showing an abutment according to Example 3 of the present invention.
Figure 5 is a diagram showing a dental implant system according to Example 4 of the present invention.
Figure 6 is a diagram showing a dental implant system according to Example 5 of the present invention.
Figure 7 is a diagram showing a dental implant system according to Embodiment 6 of the present invention.
Figure 8 is a diagram showing a dental implant system according to Example 7 of the present invention.
Figure 9 is a diagram showing a dental implant system according to Example 8 of the present invention.
Figure 10 is a view showing a dental implant system according to Example 9 of the present invention.
Figure 11 is a view showing a sleeve formed with slits of various shapes according to the present invention.

Hereinafter, the advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. In addition, the same reference numerals refer to the same components throughout this specification. Additionally, the size and shape of each component shown in each drawing may be excessive, but this is for convenience of explanation and is not intended to be limiting. Additionally, when written as 'A and/or B', it may mean both A and B, or either A or B. In addition, although different terms such as crown, artificial tooth, or prosthesis are used interchangeably throughout the specification, they can be interpreted as the same member in the present invention.

The abutment for dental implant according to various embodiments of the present invention, which will be described later, is curved in the vertical direction (vertical direction) on the outer surface of the upper part of the abutment (hereinafter referred to as 'post') to be restored by the crown. A structure such as a protrusion (protrusion) of an annular structure with a step (a structure in which the upper and lower ends have rounded surfaces based on the apex) is formed. The structure formed on the outer surface of the post of the abutment may be formed in a band shape, that is, an annular (or annular) structure, along the outer surface of the post in the rotation direction of the abutment. This structure is formed on the outer surface of the post in a vertical direction, that is, in a direction perpendicular to the direction in which the crown is mounted on the post (or the direction in which the crown is separated from the post).

Dental implant systems according to various embodiments of the present invention described later may further include a sleeve installed between the crown and the post. The sleeve may be shaped like an inverted cup with a closed top and an open bottom. And it can be combined to cover all (or part) of the post. This sleeve has an inner groove formed in an annular structure so that the inner surface of the receiving space in which the post is accommodated inside is male and female coupled to the structure formed on the outer surface of the post in response to the structure formed on the outer surface of the post, so that they engage with each other like a toothed or geared coupling. An inner structure containing is formed. In addition, the outer surface of the sleeve is provided with an outer structure that can be hung up and down by being coupled to the structure formed on the inner surface of the crown receiving space in response to the shape of the structure formed on the inner surface of the receiving space of the crown, using adhesive. It is possible to gently fix the crown to the post of the abutment through the sleeve, while preventing the crown coupled to the post of the abutment through the sleeve from coming off.

Additionally, the dental implant system according to various embodiments of the present invention further includes an abutment screw that fastens and secures the abutment to the fixture. The abutment screw has a head portion that protrudes above the post of the abutment, and the head portion is curved (stepped) in the vertical direction to be coupled to the sleeve, similar to the structure formed on the outer surface of the post of the abutment described above. A structure such as a protrusion (protrusion) is formed. The structure formed on the head of the abutment screw may be formed in a strip shape, that is, an annular (or annular) structure, along the outer surface in the rotation direction of the abutment screw. This structure is formed on the outer surface of the crown in a vertical direction, that is, in a direction perpendicular to the direction in which the crown is mounted on the post (or the direction in which the crown is separated from the post).

Additionally, in the dental implant system according to various embodiments of the present invention, annular protrusions may be formed on the outer surface of the abutment post and the head of the abutment screw, respectively, to be male and female coupled to the inner groove formed in the sleeve. For example, one is formed on the outer surface of the abutment post, and one is formed on the head of the abutment screw that protrudes from the top of the abutment post. These annular protrusions are formed parallel to each other up and down.

In addition, the sleeve may be made of metal, plastic (engineering plastic), synthetic rubber, silicone rubber, etc., and depending on the material used, the mechanical bonding force can be increased, or it can be used between the crown and the post of the abutment. Elasticity is provided to stably absorb the occlusal force caused by repetitive mastication, effectively preventing fracture of the abutment, abutment screw, or fixture.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

1 is a diagram schematically showing an abutment according to Example 1 of the present invention, where (a) is a perspective view, (b) is a front view, and (c) is a sectional view of A-A' shown in (b). It's a degree.

Referring to FIG. 1, the abutment 10 according to Example 1 of the present invention includes, for example, a coupling portion 11 that is inserted and coupled to a fixture (not shown), and a cuff formed on the upper portion of the coupling portion 11. (cuff, 12) and a post (13) formed on the upper part of the cuff (12) and restored by a crown (not shown). And a berm 12a may be formed between the cuff 12 and the post 13.

A protrusion 13a is formed along the circumference of the upper outer surface of the post 13. This protrusion 13a may be formed in a round shape (annular or annular) like a ring. And these protrusions 13a may be formed in a strip shape along the outer surface of the post 13 so that the outer surface of the post 13 is curved in the vertical direction (vertical direction).

The abutment 10 shown in FIG. 1 is, for example, a separate abutment screw type in which the abutment screw (not shown) is separated, and the abutment screw is centered in order to be coupled to the fixture through the abutment screw. A hollow 13b may be formed to allow penetration.

Example 2

Figure 2 is a diagram schematically showing an abutment according to Example 2 of the present invention, where (a) is a perspective view, (b) is a front view, and (c) is a sectional view of B-B' shown in (b). It's a degree.

Referring to FIG. 2, the abutment 20 according to Example 2 of the present invention includes a coupling portion 21, a cuff 22, and a post 23, similar to Example 1. However, the post 23 has two protrusions 23a and 23b formed side by side in the vertical direction in a strip shape along the circumference of the outer surface of the post 23, and the other configuration may be the same as in Example 1. .

Figure 3 is an enlarged view of the front view shown in Figure 2.

Referring to FIG. 3, the protrusions 23a and 23b formed on the outer surface of the post 23 of the abutment 20 correspond to the diameter of each part of the post 23 so that they can be smoothly and easily joined when the crown is coupled. Thus, they can be formed to have different diameters. For example, the protrusion 23b formed at the top has a diameter d2 ( The portion with the largest horizontal diameter of the protrusion 23b) is smaller than the diameter d1 (the portion with the largest horizontal diameter of the protrusion 23a) at the apex c1 of the protrusion 23a formed in the lower portion. can be formed.

The protrusion 23a formed in the lower part and the protrusion 23b formed in the upper part can be divided into an upper part (x1, x2) and a lower part (y1, y2) based on the apex points (c1, c2), respectively. The upper end x1 of the protrusion 23a formed in the lower part is the upper part of the apex c1 of the protrusion 23a, and the lower end part y1 is the lower part of the apex c1 of the protrusion 23a. The upper end x2 of the protrusion 23b formed in the upper part is the upper part of the apex c2 of the protrusion 23b, and the lower end part y2 is the lower part of the apex c2 of the protrusion 23b.

When the crown is coupled to the abutment 20, the crown enters smoothly and is coupled to the abutment 20. On the other hand, the upper portion of the protrusion 23a formed at the lower portion is designed to prevent the crown from being easily separated while coupled to the abutment 20. (x1) may be formed to have a gentle slope, and the lower end (y1) may be formed to have a relatively steep slope compared to the upper end (x1). The upper end (x2) of the protrusion 23b formed at the top may also be formed to have a gentle slope, and the lower end (y2) may be formed to have a relatively steep slope compared to the upper end (x2). That is, the upper ends (x1, x2) of the protrusions (23a, 23b) may be formed with a gentle angle of curvature so that the crown enters smoothly when coupled to the post (23), and the lower ends (y1, y2) may be curved at a gentle angle to enter the post (23). ), the crown may be formed to have a steep slope with a relatively large curvature angle so that it can be caught in the direction away from the post 23 (upward direction).

Example 3

Figure 4 is a diagram schematically showing an abutment according to Example 3 of the present invention, where (a) is a front view and (b) is a cross-sectional view taken along the line C-C' shown in (a).

Referring to FIG. 4, the abutment 30 according to Example 3 of the present invention provides an abutment screw-integrated structure in which the abutment screw is formed integrally. And, as in Example 2, it includes a coupling portion 31, a cuff 32, and a post 33, and the post 33 has two protrusions 33a and 33b in a strip shape along the outer surface of the post 33. is formed.

An abutment screw 31a is formed integrally with the lower part of the coupling portion 31. And in order to screw the abutment 30 to the fixture, a driver groove 33c into which a driver tool is coupled may be formed in the upper part of the post 33. At this time, the driver groove 33c may have a groove structure of various shapes such as a hexa shape, a straight shape, a cross shape, or a star shape.

Example 4

FIG. 5 is a diagram schematically showing a dental implant system according to Example 4 of the present invention, and shows a dental implant system including the abutment shown in FIG. 2. Here, (a) is an assembled cross-sectional view, and (b) is an exploded cross-sectional view with each component separated.

Referring to FIG. 5, the dental implant system 40 according to Example 4 of the present invention includes an abutment 41 coupled to a fixture, and all (or part) of the post 413 of the abutment 41. It includes a sleeve 42 coupled to cover, and a crown 43 coupled to cover the sleeve 42.

The abutment 41 includes a coupling portion 411, a cuff 412, and a post 413 in the same manner as the abutment 20 according to Example 2 shown in FIG. 2, and they are formed as one piece. It can be.

The sleeve 42 may be shaped like an inverted cup with a closed top and an open bottom. The sleeve 42 has inner grooves 42b and 42c on the inner surface of the receiving space 42a, where the post 413 is accommodated, to correspond to the structures formed on the outer surface of the post 413, such as protrusions 413a and 413b. An inner structure containing The inner structure is male and female coupled to the protrusions 413a and 413b formed on the outer surface of the post 413 and engages with each other like a toothed or geared coupling, thereby preventing the sleeve 42 from being separated by being caught in the vertical direction.

The sleeve 42 may be made of metal, plastic (engineering plastic), synthetic rubber, silicone rubber, etc., and can increase mechanical bonding force depending on the material used, or may be used as the crown 43 and the abutment. By providing elasticity between the posts 413 of (41), the occlusal force caused by repetitive mastication can be stably absorbed, thereby effectively preventing fracture of the abutment, abutment screw, or fixture.

The crown 43 is formed with a receiving space 43a in which the post 413 including the sleeve 42 enters and is received in order to repair the post 413 by covering the sleeve 42.

The sleeve 42 according to Embodiment 4 of the present invention described above may have a flat structure with no curves on the outer surface. In this structure, since there is no separate curved part, the crown can be attached to the outer surface of the sleeve mounted on the abutment by applying adhesive to the outer surface, or by applying adhesive to the inner surface of the crown. However, in this case, side effects may occur due to the use of adhesive, so a structure similar to the examples below is proposed.

Example 5

Figure 6 is a diagram schematically showing a dental implant system according to Example 5 of the present invention, where (a) is an assembled cross-sectional view and (b) is an exploded cross-sectional view with each component separated.

Referring to Figure 6, the dental implant system 50 according to Example 5 of the present invention includes an abutment 51, a sleeve 52, and a crown 53, similar to Example 4 shown in Figure 5. do. However, in order to fix the crown 53 to the sleeve 52 without using an adhesive, the outer surface of the sleeve 52 corresponds to the grooves 53b and 53c formed on the inner surface of the receiving space 53a of the crown 53. An outer structure is formed including outer protrusions 52d and 52e.

The outer structure may be formed on an outer surface corresponding in the horizontal direction to the inner grooves 52b and 52c formed on the inner surface of the receiving space 52a of the sleeve 52. This outer structure is formed when the sleeve 52 coupled to the post 513 is inserted into the receiving space 53a of the crown 53, and the grooves 53b and 53c are formed on the inner surface of the receiving space 53a of the crown 53. ), the male and female are combined. Accordingly, the crown 53 can be prevented from being separated from the post 513 in the vertical direction by being stably coupled to the outer surface of the sleeve 52 without using an adhesive.

Example 6

Figure 7 is a diagram schematically showing a dental implant system according to Example 6 of the present invention, where (a) is an assembled cross-sectional view and (b) is an exploded cross-sectional view with each component separated.

Referring to FIG. 7, the dental implant system 60 according to Example 6 of the present invention is an abutment screw separable type, and, like Example 5, includes an abutment 61, a sleeve 62, and a crown 63. ) includes. However, the abutment 61 is fastened to the fixture through an individually manufactured abutment screw 64. Other configurations are the same as Example 5.

Example 7

Figure 8 is a diagram schematically showing a dental implant system according to Example 7 of the present invention, where (a) is an assembled cross-sectional view and (b) is an exploded cross-sectional view with each component separated.

Referring to Figure 8, the dental implant system 70 according to Example 7 of the present invention, like Example 6, has an abutment screw separable structure, and like Example 6, the abutment 71 is an abutment. It is fastened to the fixture through a screw (74). A sleeve 72 and a crown 73 are sequentially coupled to the post of the abutment 71 to cover the post.

The abutment screw 74 is formed on the upper part of the screw part 741 and a screw part 741 screwed to the fixture and protrudes from the upper part of the post of the abutment 71 (projects upward based on 'a'). It includes a head portion 742. And the upper outer surface of the head portion 742 has an inner groove portion 74b corresponding to the shape of the inner groove portion 74b formed on the inner surface of the receiving space 72a of the sleeve 72 along the circumference for coupling the sleeve 72. A band-shaped annular protrusion 742a coupled to is formed. That is, in Example 7, the annular protrusion (Example 6) is not formed on the post of the abutment, but on the head portion 742 of the abutment screw 74.

Example 8

Figure 9 is a diagram schematically showing a dental implant system according to Example 8 of the present invention, where (a) is an assembled cross-sectional view and (b) is an exploded cross-sectional view with each component separated.

Referring to Figure 9, the dental implant system 80 according to Example 8 of the present invention, like Example 7, includes an abutment 81, a sleeve 82, a crown 83, and an abutment. Includes screw 84. However, two annular protrusions 842a and 842b are formed on the outer surface of the head portion 842 of the abutment screw 84 in the upper and lower directions. In addition, two inner grooves 82b and 82c are formed vertically on the inner surface of the receiving space 82a of the sleeve 82 corresponding to the annular protrusions 842a and 842b formed on the head portion 842. Other configurations are the same as Example 7.

Example 9

Figure 10 is a diagram schematically showing a dental implant system according to Example 9 of the present invention, where (a) is an assembled cross-sectional view and (b) is an exploded cross-sectional view with each component separated.

Referring to FIG. 10, the dental implant system 90 according to Example 9 of the present invention includes an abutment 91, a sleeve 92, a crown 93, and an abutment screw 94. do. And, in Example 9, the annular protrusions 913a and 942a respectively coupled to the two inner grooves 92b and 92c formed on the inner surface of the receiving space 92a of the sleeve 92 are connected to the abutment 91 and the abutment. It is not formed in only one component of the mount screw 94, but is formed separately from each other. For example, one is formed on the outer surface of the post 913 of the abutment 91, and the other is formed on the head portion 942 of the abutment screw 94 that protrudes from the top of the post 913. Provides a mixed structure formed. Other configurations are the same as Example 8.

Meanwhile, the sleeves according to Examples 4 to 9 may be made of elastic synthetic rubber or silicone rubber, or may be made of rigid metal or engineering plastic. Rigid metal or engineering plastic materials lack flexibility compared to elastic materials such as synthetic rubber or silicone rubber. For this reason, it may be difficult to connect the sleeve to an abutment made of a hard metal such as titanium, or to connect the crown to the sleeve. Therefore, as shown in Figure 11, when the sleeves (s0, s1, s2) are formed of a material such as metal or engineering plastic, the sleeves (s0, s1, s2) are used to add flexibility to the sleeves (s0, s1, s2). The side part of s2) can be cut into various shapes to form openings (gap spaces) (t0, t1, t2) of various shapes that communicate with the receiving space. At this time, the slits t0, t1, and t2 may be vertical (a), diagonal (b), or horizontal (c).

On the other hand, when the sleeve according to embodiments of the present invention is made of flexible synthetic rubber or silicone rubber, when coupled to the post of the abutment, the bonding force with the structure formed on the post may be relatively weak compared to the metal material. there is. Because of this, even if the sleeve is coupled to the post structure, there is a risk of it being separated from the post due to external shock. In consideration of this problem, the inner groove that is caught up and down on the protrusion formed on the post of the abutment or the head of the abutment screw is wrapped, or a reinforcing ring (not shown) made of a harder material than the material of the sleeve is placed below it. ) can also be installed additionally. At this time, the reinforcement ring may be made of metal or plastic, and may be installed on the inner surface of the receiving space of the sleeve, or may be embedded within the inner wall of the receiving space of the sleeve. At this time, the reinforcement ring may have a C-ring structure for easy installation.

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

10, 20, 30, 41, 51, 61, 71, 81, 91: Abutment
11, 21, 31, 411: coupling part
12, 22, 32, 412: Cuff
12a: berm
13, 23, 33, 413, 513, 913: Post
13a, 23a, 23b, 33a, 33b, 413a, 413b, 742a, 842a, 842b, 913a, 913b: Protrusion (protrusion)
13b: hollow
31a, 64, 74, 84, 94: Abutment screw
33c: driver home
40, 50, 60, 70, 80, 90: Dental implant system
42, 52, 62, 72, 82, 92, s0, s1, s2: sleeve
42a, 52a, 72a, 82a, 92a: Accommodation space
42b, 42c, 52b, 52c, 74b, 82b, 82c, 92b, 92c: inner groove
43, 53, 63, 73, 83, 93: Crown
43a, 53a: Accommodation space
52d, 52e: medial protuberance
53b, 53c: groove part
741: threaded part
742, 842, 942: Head part
t0, t1, t2: Slit area

Claims (18)

A coupling part coupled to the fixture;
A cuff formed on the upper part of the coupling portion; and
A post formed on the upper part of the cuff and restored by a crown; Including,
A hollow is formed in the post, the cuff, and the coupling portion to allow an abutment screw to penetrate and secure the coupling portion to the fixture,
The abutment screw has a head portion protruding from the top of the post,
Abutment for dental implants.
According to claim 1,
An abutment for dental implants in which one or more protrusions are formed on the outer surface of the post.
According to claim 1,
On the outer surface of the post, two protrusions are formed vertically and side by side,
The two protrusions are formed to have different diameters,
Abutment for dental implants.
According to claim 1,
On the outer surface of the post, two protrusions are formed vertically and side by side,
Among the two protrusions, the protrusion formed on the upper outer surface of the post has a diameter at the apex based on the central axis that divides the post into left and right sides and is smaller than the diameter at the apex of the protrusion formed on the lower outer surface of the post. Abutment.
According to claim 4,
An abutment for a dental implant wherein the protrusion formed in the lower part and the protrusion formed in the upper part are each formed so that the upper end has a gentle slope compared to the lower end with respect to the apex.
According to claim 1,
An abutment for a dental implant in which an abutment screw is integrally formed on the lower part of the coupling portion to fasten and secure the coupling portion to the fixture.
delete delete According to claim 1,
A protrusion in a band-shaped annular structure is formed on the outer surface of the head of the abutment screw, or a protrusion in a band-shaped annular structure is formed along the outer surface of the post.
Abutment for dental implants.
According to clause 9,
An abutment for a dental implant wherein the protrusion of the annular structure formed on the outer surface of the head portion is formed with a smaller diameter than the protrusion of the annular structure formed on the outer surface of the post.
The abutment for dental implant according to any one of claims 1, 2, 3, 4, 5, 6, 9, or 10;
a sleeve coupled to the post of the dental implant abutment to cover the outer surface of the post; and
a crown coupled to the sleeve to cover the sleeve;
A dental implant system comprising:
According to claim 11,
A receiving space in which the post is accommodated is formed in the sleeve,
On the inner surface of the receiving space, an inner groove is formed in which the protrusion of the annular structure formed on the outer surface of the post is coupled to the protrusion of the annular structure formed on the outer surface of the post,
Dental implant system.
According to claim 11,
A receiving space in which the sleeve is accommodated is formed in the crown,
One or more grooves are formed on the inner surface of the receiving space of the crown,
An outer groove is formed on the outer surface of the sleeve to correspond to the groove formed on the inner surface of the receiving space of the crown and is coupled to the groove formed on the inner surface of the receiving space of the crown.
Dental implant system.
According to claim 11,
The abutment for dental implant has a hollow formed in the center,
It is fastened and fixed to the fixture through an abutment screw that penetrates and couples into the hollow of the abutment for the dental implant.
Dental implant system.
According to claim 14,
The abutment screw has a head portion protruding from the top of the post,
The head portion protruding from the upper part of the post has a protrusion of an annular structure in the shape of a strip along the outer surface,
Dental implant system.
According to claim 15,
A receiving space in which the head portion and the post are accommodated is formed in the sleeve,
In the receiving space of the sleeve, an inner groove is formed in which the protrusion of the annular structure formed on the head portion and the protrusion of the annular structure formed on the outer surface of the post are respectively combined,
Dental implant system.
According to claim 11,
A dental implant system in which a slit is formed in the sleeve so as to extend from the outer surface to the receiving space of the sleeve.
According to claim 17,
A dental implant system in which the opening is formed vertically, horizontally, or diagonally.