KR102316320B1 - Dental implant whichof crown is detached easily - Google Patents

Abstract

The disclosed content is a dental implant that allows the crown to be attached and detached more quickly and easily from the implant fixture without damage to the coupling part during additional correction or replacement of the crown as elastic coupling is applied to the coupling part of the implant fixture and the crown. is about
The disclosed contents include an implant fixture in which a fixture to be embedded and fixed in the alveolar bone is provided on the lower side and an elastic bushing insertion groove is formed to be depressed on the upper side, and the elastic bushing insertion groove of the implant fixture is inserted and fixed to the periphery of the periphery in a radial direction. A slit to provide is formed and an elastic bushing having an elastic coupling protrusion protruding outward from the upper portion of the implant fixture is formed at the upper end, and a detachable coupling groove is formed on the inner lower side to be fitted and coupled to the implant fixture to which the elastic bushing is coupled. At the upper end of the detachable coupling groove, a locking step to which the elastic coupling protrusion of the elastic bushing is removably coupled is recessed in a radial direction outward, and the crown is easily removable including a crown cap in which the crown is integrally formed on the outside. An implant is presented as an example.

Description

Dental implant for easy removal of crown {DENTAL IMPLANT WHICHOF CROWN IS DETACHED EASILY}

Disclosed content relates to a dental implant that is fixed to the alveolar bone and supplements a missing tooth.

Unless otherwise indicated herein, the contents described in this identification are not prior art to the claims of this application, and the description in this identification is not admitted to be prior art.

BACKGROUND ART In general, teeth are bodily tissues responsible for chewing functions that help digestion by crushing or grinding food into small pieces. When these teeth are lost, for example, due to tooth extraction due to tooth decay, there is a problem in chewing function, and food cannot be chewed properly and digestion is difficult. do. For this reason, teeth have been recognized as an important part of the body since ancient times, and play an important role in leading a healthy life.

In general, humans have a total of 32 teeth, including 16 teeth in the upper jaw and 16 teeth in the mandible. carry out

After human teeth are replaced with permanent teeth once in childhood, new teeth are no longer formed even if the teeth are lost.

For example, in the case of universal prosthetics, such as bridges, partial dentures, and dentures, there is a problem that causes inconvenience in use due to a feeling of foreign body. For this reason, recently, a dental implant that can restore almost the same function and appearance as natural teeth without damaging surrounding teeth or tissues when a tooth is lost has been in the spotlight.

A dental implant is largely composed of a fixture fixed to the alveolar bone, an abutment coupled to the fixture, and a crown integrally coupled to the abutment. The fixture corresponds to the artificial tooth root that is embedded and fixed in the alveolar bone, the abutment serves to connect the fixture and the crown, and the crown corresponds to an artificial tooth that reproduces the same shape and function as natural teeth. The dental implant may include an implant fixture in which the fixture and the abutment are formed as a separate type, or the fixture and the abutment are integrally formed.

In the case of the dental implant as described above, it is often necessary to separate the crown from the implant fixture or abutment for additional correction or replacement of the crown corresponding to the artificial tooth.

As an example of a dental implant for facilitating attachment and detachment of such a crown, Korean Patent Registration No. 10-1869348 (published on June 20, 2018) has a gum implantation part that is embedded in the alveolar bone, and a screw thread is formed on the outer circumferential surface, and the gum implantation part It is located on the upper part, but includes a lower fixture including an upper coupling part formed to be fastened to the upper coupling body, and an upper coupling part receiving part to be fastened with the upper coupling part, comprising an upper coupling body to which a crown is coupled to an outer circumferential surface, and the gum implantation The part includes a cutting groove spirally formed along the longitudinal direction of the gum implantation part, the upper coupling part is formed to be fastened with the second coupling part of the upper coupling body, and the groove is formed long along the circumference of one side of the upper coupling part. 1 The coupling part and the upper coupling part are formed on one side and the other side, respectively, and are formed on one side and the other side of the upper coupling part to prevent the lower fixture implanted in the alveolar bone from being separated in the reverse direction, and are formed to protrude sharply to the gums. Disclosed is an implant fixture comprising a protrusion in the reverse direction for implantation, wherein the upper coupling body is formed to be coupled with the first coupling part of the lower fixture, and comprising a ball-shaped second coupling part. .

In addition, Republic of Korea Patent Registration No. 10-1633258 (published on June 27, 2016) includes an abutment coupled to the upper part of the implant, a crown to which a crown is attached, and a crown coupling structure coupled to the upper part of the abutment, the abutment The ment includes an implant coupling part coupled to the implant, and a coupling structure coupled to the crown coupling structure, wherein the coupling structure has a curved upper outer circumferential surface of the abutment to form a ball seating part on which the ball is seated, the In the crown coupling structure, a crown attachment part to which a crown is attached and an abutment coupling part coupled to the abutment are formed, and the abutment coupling part includes an abutment coupling part body into which the coupling structure is introduced, and a plurality of It includes four abutment fixing balls and a fixing ring having one side cut out, and a plurality of abutment fixing ball holes are formed in the abutment coupling part body so that the radius gradually decreases toward the inside. The abutment fixing ball hole is formed to correspond to the abutment fixing ball, respectively, the abutment fixing ball is accommodated in the abutment fixing ball hole, and the fixing ring includes a plurality of abutment fixing balls in which the abutment fixing ball is accommodated. An implant-coupled prosthesis that is formed outside the abutment fixing ball hole and is formed so that the abutment fixing ball is fixed to the ball seat portion when combined with the abutment is disclosed.

However, in the case of dental implants as described above, only the ball and the ball seating portion corresponding to the ball are disclosed at the coupling site of the implant nut fixture or the abutment and the crown, and proper elastic coupling is not taken into account when the crown is separated. There was a problem in that it was not easy to rejoin the crown because the coupling part such as a ball was damaged.

Patent Document 1: Korean Patent Registration No. 10-1869348 (2018.06.20. Announcement) Patent Document 2: Republic of Korea Patent Registration No. 10-1633258 (2016.06.27. Announcement)

To provide a dental implant that allows the crown to be attached and detached more quickly and easily from the implant fixture without damage to the joint during additional correction or replacement of the crown as elastic coupling is applied to the joint between the implant fixture and the crown. do.

In addition, it is not limited to the technical problems as described above, and it is obvious that another technical problem may be derived from the following description.

The disclosed content is an implant fixture in which the lower side is embedded and fixed in the alveolar bone and the upper side has an elastic bushing insertion groove, and a slit that is inserted and fixed in the elastic bushing insertion groove of the implant fixture and provides elasticity in a radial direction around the circumference. is formed, and an elastic bushing having an elastic coupling protrusion protruding outward from the upper portion of the implant fixture is formed at the upper end thereof, and a detachable coupling groove for fitting and coupling to the implant fixture to which the elastic bushing is coupled is formed on the inner lower side, and the detachable coupling At the upper end of the groove, a locking step to which the elastic coupling protrusion of the elastic bushing is detachably coupled is recessed radially outward, and a dental implant for easy removal of the crown including a crown cap in which the crown is integrally formed on the outside is provided. It is presented as an example.

According to a preferred feature of the disclosure, the outer end of the elastic coupling protrusion of the elastic bushing has a shape extending downwardly and vertically extending downwardly.

In the dental implant that is easy to attach and detach the crown according to the disclosure, an elastic bushing is interposed between the implant fixture and the crown cap so that the crown cap can be elastically coupled to the implant fixture, but can be separated only by a force of a certain size or more. As it is configured to do so, there is an advantage that the crown cap in which the crown is integrally formed can be easily detached from the implant fixture without damage to the coupling portion.

In addition, the dental implant for easy removal of the crown according to the disclosure has a shape in which the outer end of the elastic coupling protrusion of the elastic bushing extends downwardly and vertically extends downwardly, so that the downward coupling of the crown cap is facilitated. However, there is an advantage that the crown cap can be separated only when a force of a certain size or more is applied upwards during additional correction or replacement of the crown.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a dental implant easily removable crown according to an embodiment of the disclosed subject matter.
Figure 2 is an exploded perspective view of an easily removable dental implant crown according to an embodiment of the disclosed subject matter.
Figure 3 is a cross-sectional view of a dental implant easily removable crown according to an embodiment of the disclosed subject matter.
Figure 4 is a dental implant that is easy to attach and detach the crown according to an embodiment of the present disclosure, a flow chart of the removal of the crown.

Hereinafter, with reference to the accompanying drawings, the configuration and effects of preferred embodiments will be described. For reference, in the following drawings, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals refer to the same components throughout the specification, and reference numerals for the same components in individual drawings will be omitted.

1 is a perspective view of a dental implant that is easy to attach and detach a crown according to an embodiment of the disclosed subject matter, FIG. 2 is an exploded perspective view of a dental implant that is easy to attach and detach a crown according to an embodiment of the disclosure, and FIG. 3 is It is a cross-sectional view of a dental implant easily removable crown according to an embodiment of the disclosed subject matter.

As shown in FIGS. 1 to 3, the dental implant for easy removal of the crown according to an embodiment of the disclosure is provided with a fixture 11 fixed to the alveolar bone on the lower side and an elastic bushing insertion groove on the upper side. (13) is inserted and fixed in the implant fixture 10, the elastic bushing insertion groove 13 of the implant fixture 10, and a slit 23 is formed around the circumference to provide elasticity in the radial direction, An elastic bushing 20 having an elastic coupling protrusion 25 that protrudes outward from the upper portion of the implant fixture 10 is formed at the upper end, and the elastic bushing 20 is inserted into the implant fixture 10 to which the elastic bushing 20 is coupled and coupled. A detachable coupling groove 31 is formed, and at the upper end of the detachable coupling groove 31, a locking step 33 to which the elastic coupling protrusion 25 of the elastic bushing 20 is detachably coupled is recessed radially outward. It is formed and includes a crown cap 30 integrally formed with a crown (not shown) on the outside.

Here, in the implant fixture 10, the fixture part and the abutment are integrally formed to form an abutment for the connection of the crown and the artificial tooth root, which are embedded and fixed in the alveolar bone, at the same time. 11 is provided and an elastic bushing insertion groove 13 into which the elastic bushing 20 is inserted and fixed is formed in the upper surface. In addition, the upper outer peripheral surface of the implant fixture 10 in which the elastic bushing insertion groove 13 is formed is tapered toward the upper part.

The implant fixture 10 is the same as a conventional implant fixture in which the fixture and the abutment are integrally formed, except that the elastic bushing insertion groove 13 is formed. is to be omitted.

The elastic bushing 20 is inserted and fixed in the elastic bushing insertion groove 13 of the aforementioned implant fixture 10 . The elastic bushing 20 is a component that forms elasticity so that the crown cap 30 can be detachably coupled to the upper end of the implant fixture 10 , and is formed in a cylindrical shape through which the central hole 21 is formed.

The elastic bushing 20 is formed with a slit 23 providing elasticity in the radial direction. The slits 23 are alternately formed in the vertical direction at a predetermined angular interval, for example, 90 degrees. In other words, the slit 23 is formed along the circumference of the cylindrical elastic bushing 20 in the downward direction from the upper end of the elastic bushing 20 and the other slit 23 adjacent thereto. ) is formed in the upper direction from the lower end of the elastic bushing 20, and another slit 23 adjacent thereto repeats that it is formed in the lower direction from the upper end of the elastic bushing 20 again. In addition, the slit 23 is preferably formed to have a length of half or more of the length of the elastic bushing (20). The structure of the slit 23 includes the upper and lower ends of the elastic bushing 20 to provide elasticity in a radial direction.

At the upper end of the elastic bushing 20 , an elastic coupling protrusion 25 protrudes outwardly from the upper end of the implant fixture 10 so that the crown cap 30 is detachably coupled thereto and protrudes outward in the radial direction.

In addition, as the outer end of the elastic coupling protrusion 25 of the elastic bushing 20 has a shape extending downwardly and vertically extending downwardly, the crown cap 30 is lower than the upper end of the implant fixture 10 . In the case of coupling toward the , it is easily coupled by the downward inclined portion of the elastic coupling protrusion 25 , but the crown cap 30 is separated from the upper end of the implant fixture 10 for additional correction or replacement of the crown. As the elastic locking jaw is formed by the vertical extension of the elastic coupling protrusion 25, the crown cap 30 can be separated only when a force of a certain size or more is applied upwardly.

In addition, an elastic support protrusion 27 is provided at the lower end of the elastic bushing 20 in a radial direction so that the lower end of the elastic bushing 20 is supported at a predetermined position within the elastic bushing insertion groove 13 of the implant fixture 10 . protrusion is formed. In addition, the lower end of the elastic bushing 20 is supported on the lower side of the elastic bushing insertion groove 13 of the implant fixture 10 into which the elastic bushing 20 is inserted to support the lower end of the elastic bushing 20, 15 ) is formed, and an elastic support groove 17 into which the elastic support protrusion 27 of the elastic bushing 20 is inserted and coupled is formed radially outwardly on the outside of the support step 15 .

In addition, the elastic bushing 20 is inserted into the elastic bushing insertion groove 13 of the implant fixture 10 so that separation can be prevented even when a relatively strong force is applied. ) is preferably inserted and fixed into the elastic bushing insertion groove 13 of the implant fixture 10 by the elastic bushing fixtures 29a and 29b coupled to the lower end of the elastic bushing insertion groove 13 of the implant fixture 10 .

The elastic bushing fixture (29a, 29b) is inserted into the central hole 21 and is formed in a wedge shape that is inserted into the lower end of the elastic bushing insertion groove 13 of the implant fixture 10 (corresponding to 29a), or the center It can also be formed (corresponding to 29b) in the form of a fastening screw inserted into the ball 21 and screwed to the lower end of the elastic bushing insertion groove 13 of the implant fixture 10 .

The crown cap 30 is detachably coupled to the implant fixture 10 to which the aforementioned elastic bushing 20 is coupled. The crown cap 30 is integrally formed with the crown forming the artificial tooth, and is detachably coupled to the implant fixture 10 by the elastic support protrusion 27 of the elastic bushing 20 .

A removable coupling groove 31 is formed on the lower inner side of the crown cap 30 to be fitted and coupled to the implant fixture 10 to which the elastic bushing 20 is coupled. (10) is tapered toward the upper side to correspond to the outer peripheral surface of the upper side, the lower side of the detachable coupling groove 31 is non-rotatably coupled to the upper side of the implant fixture (10).

At the upper end of the detachable coupling groove 31 , a locking step 33 to which the elastic coupling protrusion 25 of the elastic bushing 20 is detachably coupled is formed radially outwardly.

In addition, a screw hole 35 is formed in communication with the detachable coupling groove 31 on the inner upper side of the crown cap 30 . The screw hole 35 is closed through, for example, filling of a resin or fastening a screw made of a resin material after coupling of the crown cap 30, for example, removing or screwing the resin when the crown cap 30 is separated. It is a part to which the tool for separating the crown cap 30 is screwed after being opened through the separation of the .

In addition, for watertight coupling of the crown cap 30 to the implant fixture 10 , a packing ring 40 is coupled to the upper outer peripheral surface of the implant fixture 10 , and a detachable coupling groove 31 of the crown cap 30 . A packing ring groove 37 into which the packing ring 40 is inserted is recessed in the radial direction at the lower end of the .

Figure 4 is a procedure flow chart of the dental implant for easy removal of the crown according to an embodiment of the disclosed subject matter. Hereinafter, with reference to FIGS. 1 to 4, the procedure and operational relationship of the dental implant for easy attachment and detachment of the crown according to an embodiment of the disclosure will be described.

First, as shown in FIG. 4, in the state where the fixture part 11 of the implant fixture 10 is embedded and fixed in the alveolar bone, the elastic bushing 20 into the elastic bushing insertion groove 13 of the implant fixture 10. is inserted, and the elastic bushing fixtures 29a and 29b are coupled to the elastic bushing insertion groove 13 through the central hole 21 of the elastic bushing 20 to fix the elastic bushing 20.

At this time, the elastic coupling protrusion 25 of the elastic bushing 20 is formed to protrude outward from the top of the implant fixture 10 , and the elastic support protrusion 27 of the elastic bushing 20 is the implant fixture 10 . It is elastically coupled to the elastic support groove 17 formed in the elastic bushing insertion groove 13 of the implant fixture 10 in a state supported by the support step 15 formed in the elastic bushing insertion groove 13.

Then, when the crown cap 30 integrally formed with the crown is pressed into the lower part of the implant fixture 10 to which the elastic bushing 20 is coupled, the detachable coupling groove 31 of the crown cap 30 is formed. As the elastic coupling protrusion 25 of the elastic bushing 20 is coupled to the engaging step 33, the coupling of the crown cap 30 is completed, and the screw hole 35 of the crown cap 30 is filled with resin or screwed together. closed through

In the dental implant that is easy to attach and detach the crown according to an embodiment of the present disclosure, the elastic bushing 20 is interposed at the coupling portion of the implant fixture 10 and the crown cap 30 so that the crown cap 30 is an implant. As it is configured to be elastically coupled to the body 10 but detachable only by a force of a certain size or more, the crown cap 30 in which the crown is integrally formed is easily detached from the implant fixture 10 without damage to the coupling portion. can be

In particular, as the outer end of the elastic coupling protrusion 25 of the elastic bushing 20 has a shape extending downwardly and vertically extending downwardly toward the lower portion, the downward coupling of the crown cap 30 is easily made, but additional correction of the crown The crown cap 30 is separated only when a force of a certain size or more is applied upward during a procedure or exchange, and the crown cap 30 cannot be arbitrarily separated in a normal chewing environment.

Although the preferred embodiment of the present invention has been described with reference to the accompanying drawings, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiment of the present invention and represent all of the technical spirit of the present invention. Therefore, it should be understood that there may be various equivalents and modifications that can be substituted for them at the time of filing the present application. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

10: implant fixture
11: fixture part
13: elastic bushing insertion groove
15: support step
17: elastic support groove
20: elastic bushing
21: central ball
23: slit
25: elastic coupling protrusion
27: elastic support protrusion
29a, 29b: elastic bushing fixture
30: crown cap
31: elastic coupling groove
33: jamming step
35: screw hole
37: packing ring groove
40: packing ring

Claims (7)

An implant fixture in which a fixture to be embedded and fixed in the alveolar bone is provided on the lower side and an elastic bushing insertion groove is formed on the upper side;
Inserted and fixed into the elastic bushing insertion groove of the implant fixture, a slit providing elasticity in a radial direction is formed around the circumference, an elastic coupling protrusion protruding outward from the upper part of the implant fixture is formed at the upper end, and an elastic support protrusion is formed at the lower end. An elastic bushing protruding outward in the radial direction: And
A detachable coupling groove is formed on the inner lower side to be fitted and coupled to the implant fixture to which the elastic bushing is coupled, and a locking step to which the elastic coupling protrusion of the elastic bushing is detachably coupled is recessed in the radial direction at the upper end of the detachable coupling groove. It is formed and includes a crown cap in which the crown is integrally formed on the outside,
The elastic bushing is formed in a cylindrical shape through which a central hole is formed, and the slits are formed alternately in the vertical direction at a predetermined angular interval and have a length of half or more of the length of the elastic bushing,
The elastic bushing is inserted and fixed into the elastic bushing insertion groove by an elastic bushing fixture fitted into the central hole and coupled to the lower end of the elastic bushing insertion groove,
A support step in which a lower end of the elastic bushing is supported is formed on a lower side of the elastic bushing insertion groove of the implant fixture, and an elastic support groove in which an elastic support protrusion of the elastic bushing is inserted and coupled to the outside of the support step is radially outward. is formed by inclusion,
A packing ring is coupled to the upper outer circumferential surface of the implant fixture for watertight coupling of the crown cap to the implant fixture, and a packing ring groove into which the packing ring is inserted is provided at the lower end of the detachable coupling groove of the crown cap in a radial direction. is formed,
A dental implant for easy removal of the crown in which a screw hole to which a tool for removing the crown cap is screwed is formed in communication with the detachable coupling groove on the inner upper side of the crown cap. delete delete delete The method according to claim 1,
The outer end of the elastic coupling protrusion of the elastic bushing is easy to attach and detach the crown, characterized in that it has a shape extending downwardly and vertically extending downwardly. delete delete

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