KR102588466B1 - Dental abutment having a protruding locking part for preventing rotation of crown and dental implant system having the same - Google Patents

Abstract

The present invention relates to a dental abutment and a dental implant system equipped with the same. The present invention relates to a dental abutment and a dental implant system equipped with the same, by forming a protruding locking part in an integrated or assembled structure on the berm formed between the post of the abutment and the cuff. Due to structural limitations, the area that is caught in the direction of rotation of the crown is increased compared to the structure of a conventional abutment without increasing the diameter of the post in a structure that cannot secure a sufficient depth of the groove or cutting surface where the crown is joined. This can prevent the crown from rotating around the abutment axis.

Description

Dental abutment having a protruding locking part to prevent crown rotation and a dental implant system having the same {DENTAL ABUTMENT HAVING A PROTRUDING LOCKING PART FOR PREVENTING ROTATION OF CROWN AND DENTAL IMPLANT SYSTEM HAVING THE SAME}

The present invention relates to a dental abutment and a dental implant system equipped with the same, and more specifically, to a state in which a crown (artificial tooth/prosthesis) coupled to the post of the abutment is coupled to the post of the abutment. It relates to a dental abutment that prevents the abutment from rotating about its axis and a dental implant system equipped with the same.

The dental implant system basically consists of a fixture installed in the alveolar bone, an abutment that is fixed to the fixture and supports the pressure corresponding to the occlusal force applied during mastication, the upper part of the abutment, In other words, it includes a crown (artificial tooth/prosthesis) that restores the post and restores aesthetic beauty similar to natural teeth.

When attaching the crown to the abutment, depending on the shape of the abutment post, the crown may remain connected to the abutment post (the crown will not move while connected to the post), or the crown may remain connected to the abutment post. It can be rotated around the butment's post. For example, if the cross-section of the abutment post is circular, there is no member (means) that is caught in the direction of rotation of the crown between the outer surface of the abutment post and the inner surface of the receiving part of the crown where the abutment post is accommodated. The crown can be easily rotated about the post.

In particular, this phenomenon can appear clearly in the case of crowns that are attached to the abutment using a screw or clip-type locking device without using adhesive. Even if an adhesive is used to attach the crown to the abutment post, it is difficult to fix the crown in the desired position if there is no jamming in the direction of rotation of the crown between the inner surface of the crown receiving portion and the outer surface of the abutment post.

For this reason, while the crown can be coupled in a desired direction, a groove or cut surface (cut surface) can be formed on the post of the abutment to prevent the crown from rotating. In general, when the abutment post is thick, rotation of the crown can be prevented by forming a straight groove or cut surface with sufficient depth on the side of the post. However, structurally, when the thickness of the post is thin, it is difficult to form a groove or cut surface with a sufficient depth on the side of the post, so the effect is inevitably relatively insignificant.

KR 10-2022-0052264 A, 2022. 04. 27. KR 10-2022-0052024 A, 2022. 04. 27. KR 10-2304797 B1, 2021. 09. 15. KR 10-1988194 B1, 2019. 06. 04.

As described above, grooves or cutting surfaces may be formed on the abutment to determine the direction in which the crown is coupled or to prevent the abutment from rotating about its axis while the crown is coupled to the abutment. In order for these grooves or cut surfaces to be formed stably, the area where the grooves or cut surfaces are formed must have sufficient thickness.

However, depending on the patient's oral structure or the location where the implant is placed, the diameter of the abutment post may be reduced and may not be thick enough to form a groove or cut surface, or even if the abutment post is not thick enough to form a groove or cut surface, the diameter of the abutment post may be reduced. Even in the case where it is formed, as in prior documents such as Korean Patent Publication No. 10-2022-0052264, Korean Patent Publication No. 10-2022-0052024, Korean Patent No. 10-2304797, Korean Patent No. 10-1988194, etc. If a predetermined structure (e.g., a groove or slit, etc.) is formed to add a special function to the post where the groove or cut surface is to be formed, this structure creates a groove or cut surface deep enough to stably attach the crown to the post. cannot be formed

Accordingly, the present invention can be proposed to solve various problems that may occur in a dental implant system including an abutment, including the problems described above.

One problem (object) that the present invention seeks to solve is to overcome the structural limitations of an abutment post (e.g., a structure in which the diameter of the post is reduced, a structure in which a hollow into which the abutment screw is inserted is formed inside the post, and/or a structure in which a predetermined structure is formed to add a special function to the post) near the berm formed between the cuff of the abutment and the post in a structure in which a sufficient depth of the groove or cut surface to be formed in the post cannot be secured. A dental abutment that forms a protruding protruding locking portion with a convex structure so that the crown is sufficiently caught on the outer surface of the abutment post in the circumferential direction around the abutment post, and a dental implant system equipped with the same. is to provide.

Meanwhile, the present invention is not limited to the above-described tasks. Various tasks may be additionally provided through the techniques described through various embodiments and claims described later.

The present invention according to an embodiment for achieving the above object is a dental device including a coupling part coupled to a fixture, a cuff formed on the upper part of the coupling part, and a post formed on the upper part of the cuff and to which the crown is coupled. In the butment, a convexly protruding locking part is formed on the berm formed at the boundary between the post and the cuff, and the locking part is coupled to a coupling groove formed in the lower part of the crown to prevent the crown from rotating around the post. We provide dental abutments that prevent

Additionally, the locking portion may be formed integrally or assembled with the berm.

In addition, when the locking portion is formed in an assembled form, a wedge groove portion to which the locking portion is coupled will be formed at the lower end of the post in contact with the upper surface of the berm or the upper part of the cuff in contact with the lower end of the post and the berm, including the berm. You can.

Additionally, the locking portion and the wedge groove portion may be coupled with screws or interference fit.

Additionally, the locking portion may be made of a rod with a rod-shaped or tubular structure.

Additionally, the wedge groove portion may have an inner diameter smaller or larger on the entrance side than the inner diameter.

Additionally, the locking portion may be formed in a hemispherical shape with a lower surface having a horizontal surface, and the wedge groove portion may be formed as a hemispherical groove corresponding to the shape of the locking portion.

In addition, the locking portion is formed with a plurality of fixed pieces divided from one another on one side, and a wedge-shaped protrusion is formed in the wedge groove portion, and the fixing piece is moved by the wedge-shaped protrusion when the locking portion enters the wedge groove portion. The engaging portion may be opened and secured to the wedge groove portion in a direction away from the wedge groove portion.

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

As described above, according to the dental abutment and implant system according to an embodiment of the present invention, a protruding locking part is integrated around the periphery (lower part of the post or upper part of the cuff) in contact with the bulge or around the bulge, including the bulge. Alternatively, by forming it into an assembled structure, it can be used as a conventional abutment without increasing the diameter of the post in a structure where the depth of the groove or cutting surface where the crown is joined cannot be sufficiently secured due to the structural limitations of the abutment's post. Compared to the structure, the area caught in the direction of rotation of the crown can be increased to prevent the crown from rotating around the abutment axis.

Meanwhile, the present invention is not limited to the effects described above, and various effects may be additionally provided through techniques described through various embodiments and claims described later.

1 is a diagram showing a dental abutment according to Example 1 of the present invention.
Figure 2 is a cross-sectional view showing a dental implant system to which the dental abutment shown in Figure 1 is applied.
Figure 3 is a diagram showing a dental abutment according to Example 2 of the present invention.
Figure 4 is a cross-sectional view showing a dental implant system to which the dental abutment shown in Figure 3 is applied.
Figure 5 is a view showing a dental abutment according to Example 3 of the present invention.
Figure 6 is a diagram showing a dental abutment according to Example 4 of the present invention.
Figure 7 is a view showing a dental abutment according to Example 5 of the present invention.
Figure 8 is a cross-sectional view showing a locking portion of a rod structure according to another example of the present invention.
Figure 9 is a diagram showing a dental abutment according to Example 6 of the present invention.
Figure 10 is a diagram showing a dental abutment according to Example 7 of the present invention.
Figure 11 is a view showing the number and position of the engaging portions formed or combined 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.

Example 1

Figure 1 is a diagram schematically showing a dental abutment according to Example 1 of the present invention, and Figure 2 is a cross-sectional view schematically showing a dental implant system to which the dental abutment shown in Figure 1 is applied. Here, Figure 1 (a) is a front view of the dental abutment, and Figure 1 (b) is a longitudinal cross-sectional view taken along 'A-A' shown in Figure 1 (a).

Referring to Figures 1 and 2, the dental abutment 10 according to Example 1 of the present invention is an abutment screw detachable abutment, and this dental abutment 10 is used for dental purposes. Depending on the area formed on the abutment 10 and its function, it can be divided into three parts, including the coupling portion 11, the cuff 12, and the post 13.

The coupling portion 11 is a lower part of the abutment 10, and part or all of it is inserted and coupled to the fixture 21 implanted in the alveolar bone. The coupling portion 11 may be fixed to the fixture 21 by an abutment screw 22, as shown in FIG. 2 . For reference, in the abutment screw integrated structure, the abutment screw is formed integrally at the lower part of the coupling portion (see FIGS. 3 and 4).

The cuff 12 is a middle part of the abutment 10 as shown in FIG. 1, and connects the coupling portion 11 and the post 13 to each other. This cuff 12 may be partly or entirely covered by the gums while the abutment 10 is coupled and fixed to the fixture 21 implanted in the alveolar bone, and usually increases in diameter from the bottom to the top as shown in Figure 1. This can be achieved with an expanded structure.

The post 13 is an upper part of the abutment 10, and is formed on the upper part of the cuff 12 and restored by the crown 23. The crown 23, which restores the post 13, is supported by the post 13. A berm 12a is formed between the cuff 12 and the post 13 (boundary), which is exposed on the upper surface and is restored by the crown 23 together with the post 13. The berm 12a is formed along the circumference (circumferential direction) of the abutment 10 when the abutment 10 is viewed from above.

The upper surface of the berm (12a) is formed to have a horizontal surface along the circumference of the abutment (10), and a portion of the berm (12a) along the circumference of the abutment (10) has a locking portion (12b) protruding upward. One or more are formed. The locking portion 12b may be formed of a protrusion-shaped structure that protrudes an amount 'd' upward from the cuff 12, that is, from the berm 12a. This locking portion 12b is restored together with the crown 23 when the crown 23 restores the post 13. For this purpose, as shown in FIG. 2, a locking groove 23a is formed in the crown 23 in response to the locking portion 12b formed on the berm 12a, into which the locking portion 12b is inserted upward (male and female are combined).

When viewed from above, the locking portion 12b formed on the berm 12a may have a rectangular shape with angled corners or a lined structure with a predetermined curved surface. As shown in FIG. 2, this locking portion 12b guides the crown 23 to be coupled in a desired direction when the crown 23 is coupled to the post 13 of the abutment 10, while the crown 23 In the state of being coupled to restore the post 23 of the abutment 10, the crown 23 is coupled to the locking groove 23a of the crown 23. It can prevent rotation on its axis.

As such, in the dental implant system 20 according to an embodiment of the present invention, a locking portion for preventing rotation of the crown 23 is placed on the berm 12a rather than on the side of the post 13 of the abutment 10. By forming 12b), it can be free from the structural constraints of the post 13 of the abutment 10. For example, in the related art, a structure in which the diameter of the post is reduced, a structure in which a hollow is formed into which the abutment screw is inserted inside the post (abutment screw separable structure), and/or a predetermined structure (e.g., to add a special function to the post) is used. , grooves), there were many limitations in forming grooves or cutting surfaces with sufficient depth on the sides of the abutment post. However, in Example 1, the problems pointed out in the prior art can be solved by forming the locking portion on the upper surface of the berm rather than on the side of the post.

Example 2

Figure 3 is a diagram schematically showing a dental abutment according to Example 2 of the present invention, and Figure 4 is a cross-sectional view schematically showing a dental implant system to which the dental abutment shown in Figure 3 is applied. Here, Figure 3 (a) is a front view of the dental abutment, and Figure 3 (b) is a longitudinal cross-sectional view taken along 'B-B' shown in Figure 3 (a).

Referring to Figures 3 and 4, the dental abutment 30 according to Example 2 of the present invention is an abutment screw-integrated abutment, and, like Example 1 of the present invention, the coupling portion 31 and , It can be divided into three parts, including the cuff (32) and the post (33). However, in Example 2, unlike Example 1, a threaded portion 31a is formed on the coupling portion 31 and fastened to the fixture 41. That is, in Example 2, the abutment is directly fastened to the fixture 41 through the threaded portion 31a of the coupling portion 31 without an independently separated abutment screw.

In the abutment 30 according to Example 2 having this structure, there is no need to form a hollow 10a inside the abutment 10 like in Example 1, so the thickness of the post is secured compared to Example 1. Because it is easy to use, there may be less restrictions on forming grooves or cutting surfaces on the sides of the post. However, depending on the structure and location of the oral cavity to which the implant system is applied, the diameter of the post may be reduced, or in a structure in which a predetermined structure is formed to add a special function to the post, the thickness of the post may be reduced, causing the same problem.

As shown in (b) of FIG. 3, the dental abutment 30 does not have a hollow interior, but a locking portion 32b consisting of a protrusion structure protruding upward is formed on the upper surface of the berm 32a. A locking groove portion 42c is formed on the corresponding surface of the crown 42 in response to the locking portion 32b.

A driver groove 33a may be formed in the upper part of the post 33 of the dental abutment 30 to which a driver tool is coupled to directly fasten the abutment 30 to the fixture 41. And on the upper part of the driver groove (33a) is an abutment cap to prevent the crown (42) from falling off from the post (33) while the crown (42) is coupled to the post (33) to restore the post (33). A coupling groove (33b) where (43) is coupled may be formed.

As shown in FIG. 4, in the dental implant system 40 according to another embodiment of the present invention, the abutment 30 is fixed using the threaded portion 31a formed in the coupling portion 31 of the abutment 30. After fastening to (41), the crown (42) is coupled to the abutment (30) so that the inner surface of the receiving portion (42a) of the crown (42) covers the outer surface of the post (33). Thereafter, the abutment cap 43 enters the receiving portion 42a through the entry hole 42b formed in the crown 42 and is exposed through the receiving portion 42a and the entry hole 42b of the crown 42. Fasten and secure to the coupling groove (33b).

As an example, as shown in FIG. 4, the abutment cap 43 includes a body 431 coupled to the coupling groove 33b and having a threaded portion formed on the outer peripheral surface, and a diameter larger than the diameter of the body 431 at the top of the body 431. It is formed to have a diameter and includes a head 432 that is caught downwardly on the inner surface of the jaw portion or the receiving portion 42a formed at the boundary between the entry hole 42b of the crown 42 and the receiving portion 42a. A driver groove 432a into which a driver tool is coupled may be formed on the top of the head 432.

In FIG. 4, the abutment cap 43 has a roughly 'T' shaped longitudinal cross-sectional view, but this may be an example. For example, the head may have a tapered structure (slanted structure) where the side (circumference) increases in diameter from the top of the body to the top. The inner surface of the receiving portion of the crown where the head is accommodated also has a tapered structure corresponding to the side of the head which has a tapered structure. Accordingly, the side of the head comes into close contact with the inner surface of the receiving portion of the crown, and the crown can be pressed downward and fixed to the post.

Example 3

Figure 5 is a diagram schematically showing a dental abutment according to Example 3 of the present invention. (a) is a front view of the dental abutment, and (b) is a longitudinal cross-sectional view of 'C-C' shown in (a).

Referring to Figure 5, the dental abutment 50 according to Example 3 of the present invention is an abutment screw detachable abutment, and includes a coupling portion 51, a cuff 52, and a post 53. Includes.

Embodiment 3 of the present invention Also, similarly to Embodiment 1 shown in FIG. 1, a locking portion 52b protruding upward is formed on the upper surface of the berm 52a. However, in Example 1, the locking portion 12b has a structure extending from the lower side of the post 53 to the upper surface of the berm 12a, but in Example 3, it is hooked so as to protrude upward only from the upper surface of the berm 12a. A portion 52b is formed.

In the case of Example 1, the locking portion 12b has a structure extending from the upper surface of the berm 12a to the lower side of the post 13. In Example 3, the locking portion 52b is not connected to the lower side of the post 53, but is formed to protrude upward only from the upper surface of the berm 52a. This structure can be appropriately selected considering the size (area) of the berm, etc.

In Examples 1 to 3 of the present invention described above, the structure of the locking part formed integrally with the berm of the abutment was explained. Hereinafter, various embodiments of the locking structure that is individually separated from the abutment and fastened to the abutment will be described.

Example 4

Figure 6 is a diagram schematically showing a dental abutment according to Example 4 of the present invention. (a) is a front view of the dental abutment, (b) is a longitudinal cross-sectional view of 'D-D' shown in (a), and (c) is a state in which the locking part in (b) is separated from the abutment. This is a vertical cross-sectional view.

Referring to FIG. 6, the dental abutment 60 according to Example 4 of the present invention includes a coupling portion 61, a cuff 62, and a post 63, similar to Examples 1 to 4. Includes.

As shown in Figures 6 (b) and (c), a wedge groove (62b) is formed at the upper part of the cuff (62) and the lower part of the post (63), including the berm (62a). The wedge groove portion 62b has a structure in which the inlet of the abutment 60 is open, and has a female thread structure with threads formed on the inner surface.

A locking portion 64 composed of a male thread structure with threads formed on the outer peripheral surface is fastened to the wedge groove portion 62b. The engaging portion 64 may include a body and a head. Alternatively, it may be made of a headless bolt structure. A portion of the locking portion 64 protrudes upward from the upper surface of the berm 62a while being fastened to the wedge groove portion 62b. At this time, the head of the locking portion 64 may be formed so as not to protrude to the outside of the cuff 62 in the lateral direction (direction of releasing the locking portion) so that it can be completely restored by the crown when the crown is coupled.

Although not shown, as in the above-described embodiments, a coupling groove to which the locking portion 64 is coupled is formed in the crown corresponding to the locking portion 64. The coupling groove formed in the crown is formed in a structure corresponding to the locking portion 64 so that the locking portion 64 is tightly accommodated. When the crown is coupled to the post 63 so that the post 63 is restored, the coupling groove of the crown is male and female coupled to the locking portion 64, thereby preventing rotation of the post 63 about its axis.

Example 5

Figure 7 is a diagram schematically showing a dental abutment according to Example 5 of the present invention. (a) is a front view of the dental abutment, (b) is a longitudinal cross-sectional view of 'E-E' shown in (a), and (c) is the state in which the locking part in (b) is separated from the abutment. This is a vertical cross-sectional view.

Referring to FIG. 7, the dental abutment 70 according to Example 5 of the present invention includes a coupling portion 71, a cuff 72, and a post 73, similar to Examples 1 to 5. Includes.

In Embodiment 5 of the present invention, as in Embodiment 4, the locking portion 74 has a structure separated from the abutment 70. However, as in Example 4, it is not a male screw (or bolt) structure, but a rod-shaped or tubular bar structure. And a wedge groove portion 72b is formed on the upper part of the cuff 72 and the lower part of the post 73, including the berm 72a.

The locking portion 74, which has a bar structure, is fastened and fixed to the wedge groove portion 72b using an interference fit method. The locking portion 74 may have a circular, oval, or square cross-sectional structure, and correspondingly, the wedge groove portion 72b may also have a circular, oval, or square structure.

The wedge groove portion 72b may have the same inner diameter. Correspondingly, it may be made of a locking portion 74 or the same outer diameter. Additionally, in order to improve the fixing force, the wedge groove portion 72b may have an inner diameter that becomes smaller as it goes in the depth direction. The locking portion 74 may also have a structure in which the outer diameter decreases from one side to the other (see Figure 8).

The wedge groove portion 72b is formed horizontally in the depth direction at the entrance side, as shown in (c) of FIG. 7, but this is just an example and may be formed diagonally. For example, it may be formed as an inclined structure that slopes downward in the depth direction. Additionally, in order to increase the fixing force of the locking portion 74, one or more jaws may be additionally formed on the inner surface.

Figure 8 is a cross-sectional view schematically showing a locking portion of a bar structure according to another example of the present invention. The outer diameter of the locking portion 84 may decrease from one side to the other (d1>d2).

Example 6

Figure 9 is a diagram schematically showing a dental abutment according to Example 6 of the present invention. (a) is a front view of the dental abutment, (b) is a longitudinal cross-sectional view of 'F-F' shown in (a), and (c) is a state in which the locking part in (b) is separated from the abutment. This is a vertical cross-sectional view.

Referring to FIG. 9, the dental abutment 90 according to Example 6 of the present invention includes a coupling portion 91, a cuff 92, and a post 93, like Example 5. And the locking portion 94 having a bar structure inside the wedge groove portion 92b is fastened and fixed in an interference fit method.

In Example 6, as shown in Figure 9(c), the bottom surface of the wedge groove portion 92b is formed at the lower end of the post 93 on the same line (same horizontal plane) as the upper surface of the berm 92a. The locking portion 94 is formed to have a horizontal surface so that its lower surface is in close contact with the upper surface of the berm 92a. For example, the locking portion 94 may have a hemispherical structure obtained by cutting a sphere in the transverse direction.

Example 7

Figure 10 is a diagram schematically showing a dental abutment according to Example 7 of the present invention. (a) is a front view of the dental abutment, (b) is a longitudinal cross-sectional view of 'G-G' shown in (a), and (c) is a state in which the locking part in (b) is separated from the abutment. This is a vertical cross-sectional view.

Referring to FIG. 10, the dental abutment 100 according to Example 7 of the present invention has a coupling portion 101, a cuff 102, and a post 103, similar to Examples 5 and 6. Included, a locking portion 104 is fastened and fixed to the wedge groove portion 102b formed near the berm 102a.

The wedge groove portion 102b is formed to have an inner diameter larger than that of the inlet side, as shown in Figures 10 (b) and (c). A wedge-shaped protrusion 102c is formed inside the wedge groove portion 102b. A fixing piece 104a is formed on one side of the locking portion 104 inserted into the wedge groove portion 102b. The fixing piece 104a is divided into upper and lower parts on one side of the locking portion 104 and consists of a plurality of pieces.

When the locking portion 104 enters the inside of the wedge groove portion 102b, the wedge-shaped protrusion 102c enters between the pair of fixing pieces 104a. At this time, the pair of fixing pieces 104a are spread upward and downward due to the wedge-shaped protrusion 102c whose diameter increases inward and are caught on the inside of the wedge groove portion 102b. Accordingly, the engaging portion 104 can be fixed in a state coupled to the wedge groove portion 102b.

Figure 11 is a diagram schematically showing the number and location of the locking portions formed or combined according to the present invention, and is a view of a dental abutment with the locking portion formed from above.

Dental abutments according to Examples 1 to 7 of the present invention include the periphery of the berm (b) (the upper part of the cuff and the lower part of the post) or the berm (b) for the purpose of preventing rotation of the crown. A locking portion (p) is formed around it in an integrated or assembled form (screw or interference fit). At this time, as shown in Figure 11, the number and location of the engaging portions (p) are not limited.

As above, preferred embodiments of the present invention have been described and illustrated using specific terminology, but such terminology is only intended to clearly describe the present invention. In addition, 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, 30, 50, 60, 70, 90, 100: Dental abutment
10a: hollow
11, 31, 51, 61, 71, 91, 101: Connection part
12, 32, 52, 62, 72, 92, 102: Cuff
12a, 32a, 52a, 62a, 72a, 92a, 102a: Berm
13, 33, 53, 63, 73, 93, 103: Post
20: Dental implant system
21, 41: fixture
23, 42: Crown
23a, 42c: Locking groove
31a: threaded part
12b, 32b, 52b, 64, 74, 84, 94, 104: Locking portion
33a, 432a: driver home
33b: Coupling groove
42a: receiving part
42b: Entry hole
43: Abutment cap
62b, 72b, 92b, 102b: wedge groove
102c: protrusion
104a: fixed piece
431: body
432: head

Claims (9)

A dental abutment comprising a coupling portion coupled to a fixture, a cuff formed on an upper portion of the coupling portion, and a post formed on the upper portion of the cuff to which a crown is coupled,
A wedge groove is formed in the lower part of the post and the upper part of the cuff, and a locking part is coupled to the wedge groove to prevent the crown from rotating around the post,
The wedge groove has an inner diameter larger than the inner diameter at the entrance side,
Dental abutment.
delete delete According to claim 1,
A dental abutment wherein the locking portion and the wedge groove portion are coupled with a screw or interference fit.
According to claim 1,
A dental abutment wherein the locking portion is made of a rod having a rod-shaped or tubular structure.
delete According to claim 1,
A dental abutment wherein the locking portion has a hemispherical shape with a horizontal surface on its lower surface, and the wedge groove portion has a hemispherical groove corresponding to the shape of the locking portion.
According to claim 1,
The locking portion is formed with a plurality of fixed pieces divided from one another on one side, and a wedge-shaped protrusion is formed in the wedge groove portion, and the fixing piece is opened by the wedge-shaped protrusion when the locking portion enters the wedge groove portion. A dental abutment that locks and secures the engaging portion to the wedge groove portion in a direction away from the wedge groove portion.
A dental implant system comprising the dental abutment of any one of claims 1, 4, 5, 7, or 8.