KR20200082806A - Dental implant whichof crown is detached easily - Google Patents

Abstract

The present invention relates to a dental implant capable of detaching a crown from an implant fixture without damage to a bonded part more quickly and easily during additional correction procedure or replacement of the crown as elastic bonding is applied to the bonded area between the implant fixture and the crown. According to an embodiment of the present invention, a dental implant capable of easily detaching a crown comprises: an implant fixture which has a fixture unit embedded in and fixed to alveolar bone on a lower side, and has an elastic bushing insertion groove recessed on an upper side; an elastic bushing which is inserted and fixed to the elastic bushing insertion groove of the implant fixture, and in which a slit providing elasticity in a radial direction is formed around a circumference, and an elastic bonding protrusion protruding outward from an upper part of the implant fixture is formed on an upper end; and a crown cap in which a detachment bonding groove fit and bonded to the implant fixture, to which the elastic bushing is bonded, is formed on an inner lower side, an engaging step to which the elastic bonding protrusion of the elastic bushing is bonded to be detached is recessed outward in a radial direction on an upper end of the detachment bonding groove, and a crown is integrally formed on the outside.

Description

DENTAL IMPLANT WHICHOF CROWN IS DETACHED EASILY

The disclosed subject matter relates to a dental implant fixed to the alveolar bone to compensate for a missing tooth.

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

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

Normally, humans have a total of 32 teeth, including 16 teeth in the maxilla and 16 teeth in the mandible, and the teeth created during infancy are replaced with permanent teeth once in childhood, and then oral activities are performed using permanent teeth for life. Perform.

Since the human teeth are replaced with permanent teeth once in childhood, even if the teeth are lost, new teeth are no longer created, and thus, the lost teeth or surrounding tissues are restored through prosthetic treatment at the dentist.

For example, in the case of a universal prosthesis such as a bridge, partial denture, or denture, there is a problem that causes inconvenience in use due to foreign body sensation. For this reason, in recent years, dental implants (dental implants) that are capable of restoring all functions and appearances almost the same as natural teeth without damaging surrounding teeth or tissues have been spotlighted.

The 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 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 the artificial tooth that reproduces the same shape and function as a natural tooth. The dental implant may include a fixture and an abutment formed separately, or may include an implant fixture in which the fixture and 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 further correction or replacement of the crown corresponding to the artificial tooth.

As an example of a dental implant to facilitate attachment and detachment of the crown, the Korean Patent Registration No. 10-1869348 (announced on June 20, 2018) is buried in the alveolar bone, and the gingival and the gingival part formed with threads on the outer circumferential surface. A lower fixed body which is located on the upper side but includes an upper coupling portion formed to be engaged with the upper coupling body, and includes an upper coupling portion receiving portion to be engaged with the upper coupling portion, and includes an upper coupling body to which a crown is coupled to the outer circumferential surface, and the gum placement The portion includes a cutting groove formed in a spiral shape along the longitudinal direction of the gum placement portion, and the upper coupling portion is formed to be engaged with the second coupling portion of the upper coupling body, and the groove is formed to have a long groove around one side of the upper coupling portion 1 formed on one side and the other side of the fastening portion and the upper coupling portion, and formed on one side and the other side of the upper coupling portion to prevent the lower fixed body buried in the alveolar bone from falling in the reverse direction, and is formed to protrude sharply to the gums. An implant fixture is disclosed, which includes an inverted release protrusion for implantation, and the upper coupling body is formed to be engaged with the first coupling portion of the lower fixture, and includes a ball-shaped second coupling portion. .

In addition, the Republic of Korea Patent Registration No. 10-1633258 (announced on June 27, 2016) includes an abutment coupled to the upper portion of the implant, a crown is attached to the upper portion of the abutment, and a crown coupling structure coupled to the upper portion of the abutment. The treatment includes an implant coupling portion coupled to the implant, and a coupling structure coupled to the crown coupling structure. In the coupling structure, the upper outer circumferential surface of the abutment is formed in a curved surface to form a ball seating portion on which the ball is seated. In the crown coupling structure, a crown attachment portion to which a crown is attached, an abutment coupling portion to be coupled to the abutment is formed, and the abutment coupling portion includes an abutment coupling portion body into which the coupling structure is introduced, and a plurality of It includes a plurality of abutment fixing balls, and a fixed ring in which one side is cut off, and in the abutment coupling portion body, a plurality of abutment fixing ball holes formed to gradually decrease in radius toward the inner direction are formed, and 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, a plurality of fish in which the abutment fixing ball is accommodated Disclosed is an implant-coupled prosthesis that is easy to perform and correct, characterized in that it is formed outside the abutment fixing ball hole, and when combined with the abutment, the abutment fixing ball is fixed to the ball seating portion.

However, in the case of the dental implant as described above, only the ball and the ball seat corresponding to the ball are disclosed at the joint portion of the implant nut fixture or the abutment and the crown, and proper elastic coupling is not considered, and thus the crown is not considered. There was a problem in that the recombination of the crown was not easy due to the damage of the coupling portion such as the ball.

Patent Document 1: Republic of Korea Patent Registration No. 10-1869348 (announced on June 20, 2018) Patent Document 2: Republic of Korea Patent Registration No. 10-1633258 (Announcement on June 27, 2016)

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

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

Disclosed is an implant fixing body in which the lower side is embedded in the alveolar bone and an elastic bushing insertion groove is embedded in the upper side, and a slit that is fixed in the elastic bushing insertion groove of the implant fixing body and provides elasticity in the radial direction around the circumference. An elastic bushing in which an elastic coupling protrusion protruding outwardly from the upper portion of the implant fixing body is formed, and a detachable coupling groove to be fitted into and coupled to the implant fixing body to which the elastic bushing is coupled are formed at the upper end of the implant fixing body. The upper end of the groove is formed with a locking step in which the elastic coupling protrusion of the elastic bushing is detachably coupled to be embedded in the radially outer side, and the dental implant with easy crown removal including a crown cap in which the crown is integrally formed is provided on the outside. It is presented as an example.

According to a preferred feature of the disclosed content, the outer end of the elastic coupling protrusion of the elastic bushing extends downward and has a shape extending vertically downward.

The dental implant for easy attachment and detachment of the crown according to the disclosed contents, the elastic bushing is interposed on the coupling portion 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 so that the crown cap is integrally formed there is an advantage that can be easily detached from the implant fixture without damage to the coupling portion.

In addition, the dental implant for easy attachment and detachment of the crown according to the disclosed contents, as the outer end of the elastic coupling protrusion of the elastic bushing extends downward and has a shape extending vertically downward, downward coupling of the crown cap is made easily. However, there is an advantage that the crown cap can be separated only when a force of a predetermined size or more is applied in the upper direction during the additional correction or replacement of the crown.

The 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 for easy attachment and detachment of a crown according to an embodiment of the disclosed subject matter.
Figure 2 is an exploded perspective view of a dental implant for easy attachment and detachment of the crown according to an embodiment of the disclosed subject matter.
Figure 3 is a cross-sectional view of the dental implant is easy to attach and detach the crown according to an embodiment of the disclosed content.
Figure 4 is a dental implant for easy attachment and detachment of the crown according to an embodiment of the disclosed content, the removal procedure of the crown.

Hereinafter, with reference to the accompanying drawings looks at with respect to the configuration and effect of the preferred embodiment. 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 with easy attachment and detachment of a crown according to an embodiment of the disclosed subject matter, and FIG. 2 is an exploded perspective view of a dental implant with easy attachment and detachment of a crown according to an embodiment of the disclosed subject matter, FIG. It is a cross-sectional view of the dental implant is easy to attach and detach the crown according to an embodiment of the disclosed content.

The dental implant for easy attachment and detachment of the crown according to an embodiment of the disclosed content, as shown in FIGS. 1 to 3, is provided with a fixture 11 to be fixed to the alveolar bone on the lower side and an elastic bushing insertion groove on the upper side. (13) is implanted and fixed to the implant fixing body 10 and the elastic bushing insertion groove 13 of the implant fixing body 10, and a slit 23 that provides elasticity in the radial direction around the circumference is formed, At the top, the elastic bushing 20 is formed with an elastic coupling protrusion 25 protruding to the upper outside of the implant fixing body 10, and at the inner lower side, the elastic bushing 20 is inserted into and coupled to the implant fixing body 10. Detachable coupling groove 31 is formed and the upper end of the detachable coupling groove 31 at the top of the elastic coupling protrusion 25 of the elastic bushing 20 is detachably coupled to the engaging step 33 is embedded radially outward It is formed and includes a crown cap 30 on which the crown (not shown) is integrally formed.

Here, the implant fixture 10 is a fixture portion and the abutment is formed integrally to form an abutment for the connection of the artificial root and the crown to be buried in the alveolar bone at the same time, the lower portion of the fixture to be embedded in the alveolar bone (11) is provided and the upper surface is formed with an elastic bushing insertion groove 13 into which the elastic bushing 20 is fixed. In addition, the upper outer circumferential surface of the implant fixture 10 in which the elastic bushing insertion groove 13 is formed is tapered toward the upper portion.

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, and thus further detailed description for the purpose of simplification of the specification Will be omitted.

The elastic bushing 20 is inserted and fixed to the elastic bushing insertion groove 13 of the implant fixing body 10 described above. The elastic bushing 20 is a component member that forms elasticity so that the crown cap 30 is 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 that provides elasticity in the radial direction. The slits 23 are alternately formed in the vertical direction at regular angle intervals, for example, 90 degrees. In other words, the slit 23 is formed along the circumference of the circumference of the cylindrical elastic bushing 20, one slit 23 is formed in a downward direction from the top of the elastic bushing 20 and the other slit 23 adjacent thereto ) Is formed in the upper direction from the bottom of the elastic bushing 20 and the other one slit 23 adjacent to it is formed again in the downward direction from the top 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 the radial direction.

At the upper end of the elastic bushing 20, an elastic coupling protrusion 25 protruding outward from the upper end of the implant fixing body 10 so that the crown cap 30 is detachably coupled is formed to protrude radially outward.

In addition, as the outer end of the elastic coupling protrusion 25 of the elastic bushing 20 extends downward and has a shape extending vertically toward the lower portion, the crown cap 30 is lowered to the upper end of the implant fixing body 10. When coupled toward the case where it is easily coupled by the downward inclined portion of the elastic coupling protrusion 25, but to remove the crown cap 30 from the top of the implant fixture 10 for further correction or replacement of the crown As the elastic locking jaw is formed by the vertical extension portion of the elastic coupling protrusion 25, the crown cap 30 can be separated only when a force of a predetermined size or more is applied in the upper direction.

Also, in the elastic bushing insertion groove 13 of the implant fixing body 10, the elastic support protrusion 27 is radially outward at the lower end of the elastic bushing 20 so that the lower end of the elastic bushing 20 is supported at a predetermined position. It is protruding. In addition, to support the lower end of the elastic bushing 20, the lower end of the elastic bushing insertion groove 13 of the implant fixing body 10, into which the elastic bushing 20 is inserted, is supported at the lower end of the elastic bushing 20, the support step 15 15 ) Is formed, and an elastic support groove 17 into which the elastic support projection 27 of the elastic bushing 20 is inserted and coupled is formed on the outer side of the support step 15 in a radially outward direction.

In addition, the elastic bushing 20 is inserted into the elastic bushing insertion groove 13 of the implant fixing body 10 to be inserted into the central hole 21 so as to prevent departure even when a relatively strong force is applied, the implant fixing body 10 ) It is preferable that the elastic bushing fastener (29a, 29b) coupled to the lower end of the elastic bushing insert groove (13) is inserted and fixed to the elastic bushing insert groove (13) of the implant fixing body (10).

The elastic bushing fixtures 29a, 29b may be formed into a wedge shape (corresponding to 29a) fitted into the central hole 21 and inserted into the lower end of the elastic bushing insertion groove 13 of the implant fixture 10. It may be formed into a fastening screw that is inserted into the ball 21 and screwed to the lower end of the elastic bushing insertion groove 13 of the implant fixing body 10 (corresponding to 29b).

The crown cap 30 is detachably coupled to the implant fixing body 10 to which the elastic bushing 20 described above is coupled. Crown cap 30 is a crown forming an artificial tooth is integrally formed, is detachably coupled to the implant fixture 10 by the elastic support projection 27 of the elastic bushing 20.

The inner and lower side of the crown cap 30 is formed with a detachable coupling groove 31 that is fitted into the implant fixing body 10 to which the elastic bushing 20 is coupled, and the upper side of the detachable coupling groove 31 is an implant fixing body. It is formed to taper toward the upper portion to correspond to the upper outer circumferential surface of (10), and the lower side of the detachable coupling groove 31 is rotatably coupled to the upper side of the implant fixing body 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 inward in the radial direction.

In addition, on the inner upper side of the crown cap 30, a screw hole 35 is formed to communicate with the detachable coupling groove 31. The screw hole 35 is closed after the crown cap 30 is coupled, for example, through filling of resin or fastening of a resin material screw, for example, when removing the crown cap 30, removing or screwing the resin After opening through the separation of the tool for removing the crown cap 30 is screwed.

In addition, for the tight coupling of the crown cap 30 to the implant fixture 10, a packing ring 40 is coupled to the upper outer circumferential surface of the implant fixture 10, and a detachable coupling groove 31 of the crown cap 30 is provided. The packing ring 40 is inserted into the packing ring groove 37 is formed in the radial direction.

Figure 4 is a surgical flow chart of the dental implant is easy to attach and detach the crown according to an embodiment of the disclosed content. Hereinafter, with reference to FIGS. 1 to 4, the procedure and operation relationship of the dental implant for easy attachment and detachment of the crown according to an embodiment of the disclosed contents will be described.

First, as shown in FIG. 4, with the fixture portion 11 of the implant fixture 10 embedded in 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 fixing body 10, and the elastic supporting protrusion 27 of the elastic bushing 20 is of the implant fixing body 10 Elastically coupled to the elastic support groove 17 formed in the elastic bushing insertion groove 13 of the implant fixing body 10 in a state supported by the support step 15 formed in the elastic bushing insertion groove 13.

Then, when the crown cap 30 is integrally formed with a crown integrally inserted into the implant fixing body 10 to which the elastic bushing 20 is coupled, the fitting of the detachable coupling groove 31 of the crown cap 30 is performed. 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. Through.

The dental implant for easy attachment and detachment of the crown according to an embodiment of the disclosed contents, the elastic bushing 20 is interposed at the coupling portion between the implant fixture 10 and the crown cap 30, and the crown cap 30 is implanted. The crown cap 30 in which the crown is integrally formed is easily detachable without damage to the implant fixing body 10 as it is elastically coupled to the stagnant body 10 but configured to be detachable only by a force of a predetermined size or more. Can be.

In particular, as the outer end of the elastic coupling protrusion 25 of the elastic bushing 20 extends downward and has a shape extending vertically toward the lower side, the downward coupling of the crown cap 30 is easily made, but additional correction of the crown is made. The crown cap 30 is separated only when a force of a predetermined size or more is applied in the upper direction at the time of the procedure or exchange, and in the normal authoring environment, the crown cap 30 cannot be arbitrarily separated.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the embodiments described in the specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and represent all technical spirits of the present invention. It should be understood that there may be various equivalents and modifications that can replace them at the time of application. Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, 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 It should be construed that any altered or modified form derived from the equivalent concept is included in the scope of the present invention.

10: Implant fixture
11: Fixture part
13: Resilient 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 projection
29a, 29b: Elastic bushing fixture
30: crown cap
31: elastic coupling groove
33: hanging step
35: thread
37: packing ring groove
40: packing ring

Claims (7)

An implant fixture in which a fixture portion to be embedded and fixed to the alveolar bone is provided on the lower side and an elastic bushing insertion groove is embedded in the upper side;
An elastic bushing in which an elastic bushing is inserted into an elastic bushing insertion groove of the implant fixing body, a slit providing elasticity in a radial direction is formed around the circumference, and an elastic coupling protrusion protruding outwardly to the upper outside of the implant fixing body is formed at the top: and
On the lower side of the inner side, a detachable coupling groove is formed by being fitted into the implant fixing body to which the elastic bushing is coupled, and a locking step in which the elastic coupling protrusion of the elastic bushing is detachably coupled to the upper end of the detachable coupling groove is radially outward. A dental implant that is formed and includes a crown cap on which the crown is integrally formed, for easy attachment and detachment of the crown. The method according to claim 1,
The elastic bushing is formed in a cylindrical shape through which a central hole is formed, but the slits are alternately formed in the vertical direction at a predetermined angle interval, the elastic coupling protrusions are formed at the top of the elastic bushing, and elastic at the bottom of the elastic bushing Dental implant for easy attachment and detachment of the crown, characterized in that the support protrusion is formed to protrude radially outward. The method according to claim 2,
The lower end of the elastic bushing insertion groove of the implant fixing body is formed with a support step at which the lower end of the elastic bushing is supported, and an elastic support groove into which the elastic support projection of the elastic bushing is inserted and coupled is radially outer on the outer side of the support step. The dental implant is easy to attach and detach the crown, characterized in that the incorporation. The method according to claim 2,
The elastic bushing is implanted into the central hole, the dental implant for easy attachment and detachment of the crown, characterized in that the elastic bushing is inserted into and fixed by the elastic bushing fastener coupled to the lower end of the elastic bushing insertion groove. The method according to any one of claims 1 to 4,
The dental implant is easy to attach and detach the crown, characterized in that the outer end of the elastic coupling protrusion of the elastic bushing extends downward and extends vertically downward. The method according to any one of claims 1 to 4,
The dental implant for easy crown attachment and detachment, characterized in that a screw hole is formed in communication with the detachable coupling groove on the inner upper side of the crown cap. The method according to any one of claims 1 to 4,
A dental implant for easy attachment and detachment of a crown, characterized in that a packing ring is coupled to an upper outer circumferential surface of the implant fixture, and a packing ring groove into which the packing ring is inserted is radially embedded in the detachable coupling groove of the crown cap.

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