KR102597778B1 - Dental abutment system - Google Patents

Abstract

A dental abutment system that can compensate for angles when combining components in an implant procedure is disclosed. A dental abutment system according to an embodiment of the present invention includes a fixture mounted on the alveolar bone; A base abutment that is partially inserted into the central hole of the fixture and is fixed by screwing a base screw to the fixture through a fastening hole formed in the center; And a post that is fixed by inserting and screwing into the upper center of the base screw through a central fastening hole so that the lower end can be closely assembled to the top of the base abutment. A post is provided on the upper outer side of the base screw. An outer tapered portion is formed, and an inner tapered portion corresponding to the outer tapered portion is formed on the lower inner surface of the post, so that at least a portion of the post is in surface contact when fastened.

Description

Dental abutment system

The present invention relates to a dental abutment system, and more specifically, to a dental abutment system that can compensate for angles when combining components in an implant procedure.

An implant, generally used in dentistry, refers to implanting a metal in the form of a tooth root into the jaw bone in an area where a tooth has been partially or completely lost in the oral cavity, allowing it to adhere to the bone and then forming a tooth.

The procedure for artificial teeth using implants first involves drilling and tapping the alveolar bone to form a groove that matches the size of the implant, and then attaching a fixture mount to the top of the implant. Afterwards, the implant fixture is implanted into the alveolar bone using a surgical hand piece, and then the fixture mount is removed from the implant. The first surgery is then completed by fastening the cover screw to the top of the implant and suturing the implant. The cover screw serves to prevent bacteria and foreign substances remaining in the oral cavity from invading the inside of the implant while waiting for osseointegration of the implant. The osseointegration period varies somewhat depending on the patient's bone quality and implant location, but generally takes 3 to 5 months.

Afterwards, through a second surgery, the gums are opened to expose the cover screw, the degree of osseointegration of the implant is checked, and the cover screw is removed. Next, a healing cap is fastened to the top of the implant to prevent the gum from covering the space where the artificial tooth will be located and to form an aesthetic gum, and wait for a certain period of time. Finally, after confirming aesthetic gum formation, the healing cap is removed, and an impression coping is fastened to the top of the implant to fabricate a prosthesis.

Subsequently, a preliminary impression is taken in the oral cavity using impression material, and the coping for the impression is removed. Through this, the abutment and prosthesis are completed, the abutment is fastened to the top of the implant, and the prosthesis is fixed on the abutment to complete the artificial tooth.

In this series of dental procedures, in the case of a detachable abutment, dental components such as a post or healing cap are attached to or separated from the base abutment. In this case, when performing an implant procedure including a bridge, etc., in some cases, depending on the angle, There was a problem in that the fastening lines did not match, requiring compensation, and in some cases, fastening could not be accomplished.

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Public Patent Publication No. 10-2020-0014558

According to the present invention, when combining the base abutment and the upper post in a separate abutment, the contact surface of the base screw and the post has a tapered shape, so that angle compensation can be achieved when connecting the separate abutment. We would like to provide a communication system.

A dental abutment system according to one aspect of the present invention includes a fixture mounted on the alveolar bone; A base abutment that is partially inserted into the central hole of the fixture and is fixed by screwing a base screw to the fixture through a fastening hole formed in the center; And a post that is fixed by inserting and screwing into the upper center of the base screw through a central fastening hole so that the lower end can be closely assembled to the top of the base abutment. A post is provided on the upper outer side of the base screw. An outer tapered portion is formed, and an inner tapered portion corresponding to the outer tapered portion is formed on the lower inner surface of the post, so that at least a portion of the post is in surface contact when fastened.

At this time, the inner tapered portion may be formed to be longer than the outer tapered portion.

At this time, when two or more fixtures are inserted and fixed into the alveolar bone at different installation angles, the installation angle formed by the central axes of each base abutment is the taper angle of the inner and outer tapered parts with respect to the central axis. It can be formed the same or smaller.

At this time, the posts correspondingly fastened to each of the base abutments may be fixed to the integrated prosthesis at the same angle as the corresponding base abutment, or may be fastened to each of the base abutments and then inserted into a cylinder formed in the prosthesis.

At this time, the post may be a healing cap that is temporarily fastened and separated.

At this time, the taper angle of the outer tapered portion and the inner tapered portion with respect to the central axis of each member may be at most 24 degrees or less.

At this time, the central axis of the post with respect to the outer surface may be inclined at a predetermined angle with respect to the central axis of the base abutment.

At this time, the predetermined angle may be 6 to 18 degrees.

According to the above configuration, the dental abutment system according to the present invention can protect the base abutment from contamination by the external environment such as bacteria by preventing soft tissue from being exposed during implant surgery.

In addition, the dental abutment system according to the present invention enables temporary prosthesis without cement, an adhesive, and eliminates the need for anesthesia, thereby saving prosthesis time.

Additionally, when using full arc, it allows for more advantageous procedures than multi-abutment in a low position.

Additionally, it is possible to perform procedures such as bridges while maintaining the maximum compensation angle.

Additionally, specifications for angle compensation can be expanded and applied in a variety of ways.

In addition, it can be applied to various clinical trials with a small number of types of posts.

1 is a perspective view of a dental abutment system according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of a dental abutment system according to an embodiment of the present invention.
Figure 3 is a cross-sectional view taken along line AA shown in Figure 1.
Figures 4 and 5 are state diagrams of a state in which a dental abutment system according to an embodiment of the present invention is coupled to a prosthesis.
Figure 6 is a schematic diagram of the procedure for applying the dental abutment system according to an embodiment of the present invention to a general implant procedure.
Figure 7 is a schematic diagram showing the types of angles that can compensate for various installation angles of the dental abutment system according to an embodiment of the present invention.

The words and terms used in this specification and claims are not to be construed as limited in their usual or dictionary meanings, but according to the principle that the inventor can define terms and concepts in order to explain his or her invention in the best way. It must be interpreted with meaning and concepts consistent with technical ideas.

Therefore, the embodiments described in this specification and the configuration shown in the drawings correspond to a preferred embodiment of the present invention, and do not represent the entire technical idea of the present invention, so the configuration may be replaced by various alternatives at the time of filing of the present invention. There may be equivalents and variations.

In this specification, terms such as “comprise” or “have” are intended to describe the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to describe the presence of one or more other features. It should be understood that it does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

A component being “in front,” “rear,” “above,” or “below” another component means that it is in direct contact with the other component, unless there are special circumstances. This includes not only those placed at the “bottom” but also cases where another component is placed in the middle. In addition, the fact that a component is "connected" to another component includes not only being directly connected to each other, but also indirectly connected to each other, unless there are special circumstances.

Hereinafter, a dental abutment system according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIGS. 1 to 8, the dental abutment system according to an embodiment of the present invention includes a fixture 10, a base abutment 30, a base screw 20, and a post 40. Includes.

Referring to Figures 1 to 3, the fixture 10 is mounted on the alveolar bone 1. At this time, a groove matching the size of the implant can be formed in the alveolar bone 1 through a drilling and tapping process, and a fixture mount can be fastened to the top of the implant.

At this time, the fixture 10 has a screw formed on its outer surface so that it can be screwed to the alveolar bone 1, and a fastening hole 11 is formed on its inner side. Here, a part of the base abutment 30 is inserted into the fastening hole 11, and the screw 21 of the base screw 20 is fastened to the screw of the fastening hole 11, thereby making the base abutment 30 strong. It is fixed.

Referring to FIGS. 1 to 3, the base abutment 30 is partially inserted into the fastening hole 11 of the fixture 10 and passes through the fastening hole formed in the center to attach the base screw 20. ) can be fixed by screwing to the fixture (10).

At this time, the base screw 20 has a fastening screw 21 formed from the lower end to a certain height. Referring to FIG. 3, an enlarged diameter portion whose diameter increases as it goes upward is formed, so that when fastening, the base abutment ( 30) can be fixed. In addition, the base screw 20 has a fastening hole 22 formed in the upper center, and the post screw 40 is aligned with the base abutment 30 in a similar manner to the base abutment 30. (60) can be fixed by combining screws (61, 22). Here, an outer tapered portion 20a is formed at a certain distance from the top of the base screw 20.

Referring to FIGS. 1 to 3, the post 40 penetrates the central fastening hole 40b so that the lower end can be closely assembled to the upper end of the base abutment 30 and is connected to the base screw 20. It can be fixed by inserting and screwing into the upper center of the.

At this time, an outer tapered portion 20a is formed on the upper outer side of the base screw 20, and an inner tapered portion 40a corresponding to the outer tapered portion 20a is formed on the lower inner surface of the post 40. This can be done so that at least some of them are interviewed when signing the contract.

At this time, after the outer tapered portion 20a and the inner tapered portion 40a are fastened, the entire tapered portion may be in close contact. Accordingly, the angles formed by the outer tapered portion 20a and the inner tapered portion 40 with respect to the central axes of the abutment 30 and the post 40 may be formed to be the same.

At this time, referring to FIG. 3, the inner tapered portion 40a may be formed to be longer than the outer tapered portion 20a.

At this time, referring to FIGS. 4 and 5, the taper angle of the outer tapered portion 20a and the inner tapered portion 40a with respect to the central axis of each member may be at most 12 degrees or less. In FIG. 4, the insertion angle θ1 may be a maximum of 8 degrees, and θ2 in FIG. 5 may be 20 to 24 degrees. Therefore, the angle formed between the central axes of the outer tapered portion 20a and the inner tapered portion 40a can be formed to be about 12 degrees, which is half of the maximum of 24 degrees. That is, when two or more fixtures 10 are inserted and fixed into the alveolar bone at different installation angles, the installation angle formed by the central axes of each base abutment 30 is the inner tapered portion 40a and the outer taper. The portion 20a may be formed to be equal to or smaller than the taper angle with respect to the central axis.

At this time, referring to FIG. 5, the posts 40 correspondingly fastened to each of the base abutments 30 are fixed to the integrated prosthesis 300 at the same angle as the corresponding base abutment 30 or as shown in FIG. For reference, after being fastened to each of the base abutments 30, they may be inserted into the cylinder formed in the prosthesis 300.

Referring to Figure 1, a perspective view of the base abutment 30 and the post 40 installed on the fixture 10 of the dental abutment system according to an embodiment of the present invention is shown. The fixture 10 is completely fastened to the alveolar bone 1 and installed, and the base abutment 30 and the post 40 are sequentially fastened to the fixture 10 and fixed thereto.

Referring to Figure 2, an exploded perspective view of a dental abutment system according to an embodiment of the present invention is shown. The fixture 10 is installed and fixed to the alveolar bone 1 from the lower part. When the base abutment 30 is inserted into the fixture 10, the base abutment 30 is fixed by screwing it to the screw of the fixture 10 using the base screw 20. Then, in the same manner, the post 40 is aligned with the upper part of the base abutment 30 and the post screw 60 is screwed to the inner screw of the base screw 20 to secure it.

Referring to FIG. 3, a cross-sectional view taken along line AA shown in FIG. 1 of the dental abutment system according to an embodiment of the present invention is shown. The base abutment 30 is fixed to the fixture 10 by a base screw 20, and the post 40 is assembled and fixed to the base abutment 30 by a post screw 60. At this time, the outer tapered portion 20a of the base screw 20 is tapered at the same angle as the inner tapered portion 40a of the post 40, and thus are fixed in close contact with each other.

Referring to Figure 4, a state diagram of a dental abutment system according to an embodiment of the present invention coupled to a prosthesis is shown. The prosthesis 300 is applied to a cement type prosthesis called a bridge. At this time, a dental abutment system having two or more different installation angles may be applied to the prosthesis. An insertion groove into which the post 40 is inserted is formed inside the prosthesis 300, and an adhesive called cement is applied to the insertion groove. Therefore, each post 40 is inserted into the insertion groove corresponding to the prosthesis 300 and fixed. At this time, the installation angle, θ1, is about 8 degrees, and the outer surface of the post is tapered, making insertion easy when combining the prosthesis.

Referring to Figure 5, a state diagram of a dental abutment system according to an embodiment of the present invention coupled to a prosthesis is shown. The prosthesis 300 is applied to a screw type prosthesis, also called a bridge. Here, as in FIG. 4, a dental abutment system having two or more different installation angles may be applied to the prosthesis 300. Unlike Figure 4, in the prosthesis 300, posts 40 are pre-installed at each position rather than in the insertion groove. At this time, the entire prosthesis 300 will be lowered in the vertical direction in the drawing, and the head of the base screw 20 will be inserted into the post 40 first. Here, an inner tapered portion 40a is formed on the post 40 and an outer tapered portion 20a is formed on the head of the base screw 20, so the head of the base screw 20 can be easily attached to the post 40 without interference. can be inserted.

If the tapered portions are not formed as in the past, when inserting the post, the head edge of the base screw may be caught on one side of the lower part of the through hole of the post, making insertion impossible or requiring interference fitting. Here, since the outer tapered portion and the inner tapered portion are formed, the bridge procedure can be easily performed without interference.

At this time, θ2, which is the difference in the installation angle, may be 20 to 24 degrees, and the angle that is half of the angle may be formed to be the same as the angle that the tapered portions make with respect to the central axis.

This advantage of the present invention can be applied not only to bridges but also to so-called multi procedures. In the case of this type of procedure, four fixtures are usually used. Since each fastened part has a different insertion angle, it can be applied in a similar manner, and when applying full arch, it is very advantageous compared to the conventional method. .

Referring to Figure 6, a schematic diagram of the procedure for applying the dental abutment system according to an embodiment of the present invention to a general implant procedure is shown. In (a), after installing the fixture (10) in the alveolar bone (1), the base abutment (30) is fastened using the base screw (20), and the healing cap (140) is assembled thereon instead of the healing abutment. It is a state. The first treatment is completed.

In (b), when osseointegration is achieved, the healing cap 140 is removed. At this time, in the conventional case, the healing abutment is removed, so it is easily exposed to the external environment such as bacteria, but in the case of the present invention, the base abutment 30 is maintained in the opened state of the gum 2. Therefore, exposure to the external environment such as bacteria can be suppressed.

In (c), the scan body 240 is fastened as before. Next, the scan body 240 is removed in (d). As in (d), in the conventional case, it is exposed to the external environment, but in the case of the present invention, the base abutment 30 is exposed. In (e), the final prosthesis, the cement post 340, is assembled. Conventionally, a cement abutment is assembled into a fixture, and until then, exposure to the external environment continues. However, in the present invention, exposure is always suppressed by the base abutment 30.

For similar reasons, the present invention saves prosthesis time. That is, in conventional prosthetics, the final prosthesis setting time increases because the abutment at the previous stage and the abutment at the final stage are different from each other. However, in the case of the present invention, the base abutment naturally adapts to the shape of the base abutment while it is fastened and healing, thereby saving prosthetic time. In addition, since the base abutment is protected without exposing soft tissue, the procedure can be performed without anesthesia. possible.

Referring to Figure 7, a schematic diagram showing the types of angles that can compensate for various installation angles of the dental abutment system according to an embodiment of the present invention is shown.

At this time, the central axis of the posts (540, 640, 740) with respect to the outer surface may be inclined at a predetermined angle with respect to the central axis of the base abutment (30).

At this time, the predetermined angle may be 6 to 18 degrees.

This embodiment is intended to correspond to various oral structures, and a fixture is installed in the alveolar bone, and a base abutment is also fastened to the fixture. In this state, appropriate posts 540, 640, and 740 that can compensate for the angle can be selected and applied depending on the angle, for example, 6 degrees, 12 degrees, or 18 degrees.

In addition to this angle compensation, it is possible to produce a highly aesthetically complete prosthesis by minimizing unnecessary margin modifications by lowering the labial and buccal margin heights in a shape similar to the patient's gum line on the post side. Additionally, the combination of a small number of post types makes it possible to apply it to a variety of clinical settings.

Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention can add or change components within the scope of the same spirit. , deletion, addition, etc., other embodiments can be easily proposed, but this will also be said to fall within the scope of the present invention.

1: Alveolar bone
2: Gum 10: Fixture
20: base screw 20a: outer tapered portion
30: Base abutment 40: Post
40a: inner tapered portion 60: post screw

Claims (8)

A fixture mounted on the alveolar bone;
A base abutment that is partially inserted into the central hole of the fixture and is fixed by screwing a base screw to the fixture through a fastening hole formed in the center; and
A post is fixed by inserting and screwing into the upper center of the base screw through a central fastening hole so that the lower end can be closely assembled to the upper end of the base abutment,
An outer tapered portion is formed on the upper outer side of the base screw, and an inner tapered portion corresponding to the outer tapered portion is formed on a lower inner surface of the post so that at least a portion of the inner tapered portion contacts the outer taper when fastened. It is formed longer than the second part,
In a state where two or more fixtures are inserted and fixed into the alveolar bone at different installation angles, the installation angle formed by the central axes of each base abutment is equal to the taper angle of the inner tapered portion and the outer tapered portion with respect to the central axis. By being small, they can be combined even when the central axes of the base screw and the post do not coincide with each other,
A dental abutment in which the posts correspondingly fastened to each of the base abutments are fixed to the integrated prosthesis at the same angle as the corresponding base abutment, or are fastened to each of the base abutments and then inserted into a cylinder formed in the prosthesis. system.
delete delete delete According to claim 1,
A dental abutment system in which the post is a healing cap that is temporarily fastened and separated.
According to claim 1,
A dental abutment system, wherein the outer tapered portion and the inner tapered portion have a maximum taper angle of 24 degrees or less with respect to the central axis of each member. According to claim 1,
A dental abutment system, wherein the central axis of the post relative to the outer surface is inclined at a predetermined angle with respect to the central axis of the base abutment.
According to clause 7,
The predetermined angle is 6 to 18 degrees, a dental abutment system.

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