KR102427069B1 - Implant crown fastening structure and fastening method - Google Patents

Abstract

The present invention relates to an implant crown fastening structure and fastening method. The implant crown fastening structure of the present invention comprises: an abutment (200) in which a second screw insertion hole (210), a cutting portion (220), and a protrusion portion (230) are formed; a crown (100); and a fixture (300). According to the present invention, by providing a simple implant crown fastening structure, it is possible for an operator to easily perform an implant operation.

Description

Implant crown fastening structure and fastening method {IMPLANT CROWN FASTENING STRUCTURE AND FASTENING METHOD}

The present invention relates to a fastening structure capable of easily coupling a crown to an abutment and allowing the crown, an abutment and a fixture to be closely coupled to each other in the case of performing an implant procedure, and relates to a fastening method using such a fastening structure will be.

As a prior art related to the implant crown fastening structure of the present invention, Korean Patent Publication No. 10-2021-0012179 (published on February 3, 2021) has a fixture that is embedded and fixed in the alveolar bone and a fastening hole is formed; An abutment through which a fastening bolt insertion hole is formed along the longitudinal direction and a seating step is formed on the upper periphery; a fastening bolt passing through the fastening bolt insertion hole of the abutment and being fastened to the fastening hole of the fixture by pressing and fixing the abutment to the fixture; a first ring-shaped spring that is seated and fixed on the seating step of the abutment and provides elasticity in a radial direction; a second ring-shaped spring fitted on the outer circumferential surface of the first ring-shaped spring, seated and fixed on the seating step of the abutment, providing elasticity in a radial direction, and forming a first elastic coupling concave-convex portion on the periphery together with the first ring-shaped spring; and a detachable coupling groove that is detachably fitted to the abutment to which the first and second ring-shaped springs are coupled is formed therein, and is elastically closely coupled to the first elastic coupling concavo-convex portion in the detachable coupling groove. A technology related to a dual spring type dental implant that is easy to attach and detach a crown including a crown cap in which a second elastic coupling concavo-convex portion is formed and the crown is integrally formed on the outside is disclosed.

In addition, in Patent Publication No. 10-2198248 (registered on Dec. 28, 2020), the abutment body through which the screw insertion hole is formed; A healing part molding mold in which an inner core corresponding to the upper shape of the abutment body is protruded is used in the resin building groove corresponding to the outer shape of the resin light polymerization healing part, but the resin is filled into the resin building groove and is light-cured separately. Resin light polymerization healing unit to be manufactured; And it is inserted into the screw insertion hole of the abutment body is fastened to the fixture, the upper side of the upper periphery of the abutment body is spread radially outwardly, the resin light polymerization healing portion is closely coupled to the upper side of the abutment body. It includes a fastening screw in which the pressing part is integrally formed, and the abutment body is formed with an elastic coupling protrusion that provides elasticity in the radial direction by a vertical slit spaced apart from the upper periphery, and the healing part molding mold is A resin construction groove corresponding to the outer shape of the resin light polymerization healing part is recessed, and an inner core in the form of a truncated cone that becomes narrower toward the upper side to correspond to the upper shape of the abutment body protrudes inside the resin construction groove. In the healing part molding mold, a plurality of resin construction grooves including the inner core are spaced apart at predetermined angular intervals so that the resin light polymerization healing part corresponding to each tooth can be molded and manufactured with one healing part molding mold. There is disclosed a technology related to a healing abutment provided with a resin light-curing healing unit, characterized in that it is formed in a ring shape.

In addition, in Patent Publication No. 10-2018-0091408 No. (published on August 16, 2018), the implant means inserted into the alveolar bone, fixed, and has a thread formed therein to serve as a nut; Abutment means for selecting the shape and angle according to the implant position and the state of the teeth, so that there is no gap with the implant in the alveolar bone; A connecting screw means for fitting inside the abutment, tightening the screw thread inside the implant, and fixing the implant and the abutment so that there is no gap; An anti-loosening washer means having a ratchet-type gear formed along the circumferential surface to prevent loosening and having a rotating protrusion for fixing and rotating with a connecting screw; The connecting screw is composed of a bolt head and a bolt body, and an insertion guide groove is provided in the bolt head so that the washer rotating protrusion with an anti-loosening function is caught, and the abutment is a count bore on one surface in the direction of coupling with the crown. In the form of a counter-bore-processed inner surface, a plurality of locking jaws protruding at regular intervals are provided on a circular arc, and the anti-loosening function washer is accommodated in the counter-bore processed inner space of the abutment, and the anti-loosening A part of the inner periphery of the functional washer protrudes toward the center and a rotating protrusion that is accommodated in the connecting screw insertion guide groove is provided to combine the anti-loosening function washer with the connecting screw, and protrude along the outer periphery of the anti-loosening function washer , It has a ratchet-type gear shape inclined in the direction of tightening the abutment, and elastically deforms when the connecting screw is tightened, and the outer end passes over one side of the abutment engaging jaw, and then returns to the original shape by the elastic force. restored to its shape, its outer end is caught on the other side of the abutment locking jaw, a plurality of elastic protrusions for preventing loosening of the connection screw are provided, and the loosening preventing washer is installed in the abutment count bore space There is disclosed a technology related to an implant loosening prevention assembly, characterized in that it is configured not to fall out.

In addition, in Laid-Open Patent Publication No. 10-2017-0102280 (published on September 8, 2017), a base member having a screw hole opening to the upper surface, a member to be installed externally fitted to the base member from above, and the corresponding and a bolt for fastening and fixing a member to the base member, and at the bottom of the screw hole of the base member, an engaging hole having a cylindrical inner surface having a diameter smaller than the inner diameter of the screw hole is formed, the bolt A screw shaft portion screwed to the screw hole, a bolt head portion having a larger diameter than the screw shaft portion, and a locking shaft portion protruding downward from the lower surface of the tip of the screw shaft portion and engaging the inner circumferential surface of the locking hole and the engaging shaft portion is provided to be slightly eccentric with respect to the screw shaft portion so that the screw shaft portion is slightly eccentric and/or inclined with respect to the screw hole by engaging the engagement shaft portion in the engagement hole, or There is disclosed a technology related to a bolt fastening structure, characterized in that the engaging hole is installed slightly eccentrically with respect to the screw shaft portion.

In addition, in Patent Publication No. 10-2198237 (registered on Dec. 28, 2020), an abutment in which a screw insertion hole is formed in the center; a crown in which a coupling portion into which the upper side of the abutment is inserted is formed in the lower inner side, a screw hole is formed in the inner center, a bushing hole is formed in the inner upper side, and a stepped portion is formed between the bushing hole and the screw hole; an elastic bushing inserted into the bushing hole of the crown, supported by the stepped portion and having elasticity to be spread in a radial direction; The abutment is inserted and fastened into the screw insertion hole of the abutment through the elastic bushing, and an extension head is integrally formed at the upper end to be supported by the bushing hole of the crown by spreading the elastic bushing outward in the radial direction. Including a screw, the elastic bushing is formed in a ring shape, two or more partial incisions cut by a predetermined length in the downward direction from the top are formed to be spaced apart, and elastic expansion protrusions that can be spread radially between the partial incisions. There is disclosed a technology related to a cementless type dental implant using an elastic bushing is formed.

: Unexamined Patent Publication No. 10-2021-0012179 (published on Feb. 3. 2021) : Registered Patent Publication No. 10-2198248 (Registered on Dec. 28, 2020) : Publication No. 10-2018-0091408 (published on August 16, 2018) : Publication No. 10-2017-0102280 (published on September 8, 2017) : Registered Patent Publication No. 10-2198237 (Registered on Dec. 28, 2020)

The techniques described in the prior art document require many configurations to combine the crown and the abutment, causing inconvenience to the user in performing the implant procedure.

An object of the present invention is to provide a simple implant crown fastening structure, so that an operator can easily perform an implant procedure.

In addition, an object of the present invention is to allow the crown and the abutment to be easily and reliably closely coupled by forming the cutting part and the protrusion together on the upper part of the abutment.

In addition, an object of the present invention is to allow the abutment and the crown to be easily coupled and to be in close contact with each other by forming a thread on the inner side of the central upper part of the abutment.

In addition, an object of the present invention is to not require a separate cement (adhesive) by coupling the abutment and the crown by means of a screw.

The present invention is to solve the above problems, [1] the second screw insertion hole 210 is formed in the center, the upper outer side of the abutment (220) and the protrusion 230 is formed. 200); An abutment coupling part 120 to which the upper side of the abutment 200 is inserted and coupled is formed in the lower inner side, and a screw insertion hole 110 is formed in the inner center, and the abutment coupling part 120 a crown 100 having an abutment seating groove 121 in which the protrusion 230 of the abutment 200 can be seated; a fixture 300 in which a first screw insertion hole 310 is formed in a central lower portion and an abutment seating portion 320 is formed in the central upper portion so that the abutment is seated; The first screw insertion hole 310 formed in the fixture 300 communicates with the second screw insertion hole 210 formed in the abutment 200, and the first screw insertion hole 310 has, A first screw 350 is inserted from the second screw insertion hole 210 so that the abutment 200 is fixedly installed in the fixture 300 , and the crown ( It relates to an implant crown fastening structure, characterized in that the second screw 250 is inserted from the screw insertion hole 110 of 100 , the crown 100 is fixedly installed to the abutment 200 .

In addition, the present invention is [2] in the above [1], characterized in that the threaded portion 221 is formed in the center upper inner side of the abutment 200 to correspond to the second screw 250, It relates to an implant crown fastening structure.

In addition, the present invention is [3] in the above [1], the cutting part 220 of the abutment 200 is made of one or more, and the protrusion 230 of the abutment 200 is It relates to an implant crown fastening structure, characterized in that it consists of one or more on the outside of the upper side of the abutment 200 .

Also, according to the present invention [4], in [3], the upper portion of the protrusion 230 is formed in a horizontal shape, and the upper portion of the abutment seating groove 121 also corresponds to the protrusion 230. It relates to an implant crown fastening structure, characterized in that it is formed in a horizontal form.

In addition, the present invention [5] the implant crown fastening according to [4], wherein the bottom surface of the first screw 350 is coupled to the head surface of the second screw 250 in contact with it. it's about structure

In addition, the present invention [6] in the implant crown fastening method for fastening the fixture 100, the abutment 200, and the crown 100, screw the abutment 200 to the fixture 300 implanted in the gum A first step (S-1) of fixing the abutment 200 to the fixture 300 by coupling; In a state in which the abutment 200 is fixedly coupled to the fixture 300 by the first step, a second step (S-2) of assembling the crown 100 by inserting it into the upper portion of the abutment 200 (S-2) ; In the state in which the crown 100 is assembled to the abutment 200 by the second step, the crown 100 is screwed into the abutment 200 by screwing the crown 100 and the abutment 200. ) is fixedly coupled to the third step (S-3); the first step is after seating the lower part of the abutment 200 on the abutment seating part 320 of the fixture 300 , the abutment 200 is fixed by rotating the first screw 350 in a state in which the first screw 350 is inserted into the first screw insertion hole 310 through the second screw insertion hole 210 . It is fixedly coupled to the 300, and the second step is assembling by fitting the protrusion 230 formed on the abutment 200 into the abutment seating groove 121 formed on the crown 100, and , in the third step, by rotating the second screw 250 in a state in which the second screw 250 is inserted into the second screw insertion hole 210 through the screw insertion hole 110 , the crown 100 ) relates to a method for fastening an implant crown, characterized in that the abutment 200 is firmly fixedly coupled.

The present invention is configured as described above, and by providing a simple implant crown fastening structure, an operator can easily perform an implant procedure.

In addition, according to the present invention, by forming the cutting portion and the protrusion together on the upper portion of the abutment, coupling of the crown and the abutment can be easily and securely coupled.

In addition, according to the present invention, by forming a thread on the inner side of the central upper portion of the abutment, the abutment and the crown can be easily coupled and firmly adhered.

In addition, the present invention does not require a separate cement (adhesive) to connect the abutment and the crown by means of a screw.

1 is a conceptual view showing the implant crown fastening structure of the prior art
2 is an exploded perspective view of the present invention;
3 is an exploded view showing the abutment and the screw of the present invention;
4 is an exploded cross-sectional view of the present invention;
5 is an exploded cross-sectional view of a state in which the fixture and the abutment of the present invention are combined
6 is a combined cross-sectional view of the present invention;

Hereinafter, an implant crown fastening structure and fastening method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to the implant crown fastening structure in the present invention, the crown 100, the abutment 200, and the fixture 300 are fastened and integrated.

The present invention includes an abutment 200 having a second screw insertion hole 210 formed in the center, and a cutting portion 220 and a protrusion 230 formed on the outside of the upper side; An abutment coupling part 120 to which the upper side of the abutment 200 is inserted and coupled is formed in the lower inner side, and a screw insertion hole 110 is formed in the inner center, and the abutment coupling part 120 a crown 100 having an abutment seating groove 121 in which the protrusion 230 of the abutment 200 can be seated; A first screw insertion hole 310 is formed in the lower center of the fixture, and an abutment seating part 320 is formed in the upper center so that the abutment is seated. The formed first screw insertion hole 310 communicates with the second screw insertion hole 210 formed in the abutment 200 , and the first screw insertion hole 310 has the second screw insertion hole 210 . ), the abutment 200 is fixedly installed in the fixture 300 by inserting the first screw 350 from the ) from which the second screw 250 is inserted so that the crown 100 is fixedly installed to the abutment 200. Hereinafter, each configuration will be described in detail while looking at the drawings.

[Crown (100)]

The crown 100 of the present invention is coupled to the abutment 200 , and the coupling to the abutment 200 is made by the second screw 250 .

As shown in FIGS. 2 and 4 to 6 , an abutment coupling part 120 to which an upper side of the abutment 200 is inserted and coupled is formed on the inner lower side of the crown 100 . In addition, a screw insertion hole 110 is formed in the inner center of the crown 100 , and the second screw 250 is inserted into the screw insertion hole 100 to connect the crown 100 and the abutment 200 . fixedly coupled.

In addition, an abutment seating groove 121 in which the protrusion 230 of the abutment 200 can be seated is formed in the abutment coupling part 120 .

The protrusion 230 of the abutment 200 to be described below is fitted and coupled to the abutment seating groove 121 .

[Abutment (200)]

The abutment 200 of the present invention includes a second screw insertion hole 210 , a cutting unit 220 , and a protrusion 230 .

As shown in FIG. 3 , the second screw insertion hole 210 is formed in the center of the abutment 200 . In addition, the cutting portion 220 and the protrusion 230 are formed on the outside of the upper side of the abutment 200 .

At this time, the protrusion 230 of the abutment 200 is fitted and fixedly coupled to the abutment seating groove 121 of the crown 100 described above.

In addition, a threaded portion 221 is formed in the upper central portion of the abutment 200 to correspond to the thread of the second screw 250 , and the cutting portion 220 of the abutment 200 has at least one It is made of more than one, and the protrusion 230 of the abutment 200 is made of one or more between the cutting parts 220 .

The threaded portion 221 is formed inside the central upper portion of the abutment 200 , and when the second screw 250 comes into contact with the threaded portion 221 and enters below the abutment 200 , , As the cutting part 220 is spread outward, the abutment 200 is spread outwardly toward the crown 100 , so that the abutment 200 is closely coupled to the crown 100 . Therefore, in the case of combining the crown 100 and the abutment 200 as in the prior art, it has an advantageous effect in that it does not require cement (adhesive).

At this time, the second screw 250 abuts the second screw 250 by making the diameter of the upper part of the part where the thread is formed is larger than the diameter of the lower part, that is, in the shape of a cone with the head cut off. When inserting into the second screw insertion hole 210 of the ment 200, it is preferable that the cutting part 220 is easily opened to the outside.

In addition, the upper portion of the protrusion 230 of the abutment 200 is formed in a horizontal form, and the upper portion of the abutment seating groove 121 corresponding to the protrusion 230 is also formed in a horizontal form. It is preferable that the protrusion 230 and the abutment seating groove 121 be firmly and firmly fixed between the cutting portions 220 .

[Fixture (300)]

The fixture 300 of the present invention includes a first screw insertion hole 310 formed in the lower center and an abutment seating portion 320 formed in the upper center of the fixture so that the abutment 200 is seated.

2, 5 and 6, the abutment 200 fixedly coupled to the fixture 300, the lower portion of the abutment 200 is seated in the abutment of the fixture 300 In the state of being inserted into the part 320 , the abutment 200 is fixedly coupled to the fixture 300 by inserting the first screw 350 into the first screw insertion hole 310 and spirally coupling the abutment 200 .

Hereinafter, a fastening method for fastening the implant crown using the implant crown fastening structure of the present invention configured as described above will be described.

First, the abutment 200 is fixedly coupled to the fixture 300 by screwing the abutment 200 to the fixture 300 implanted in the gum (step 1, S-1).

At this time, the coupling of the fixture 300 and the abutment 200 is performed after the lower portion of the abutment 200 is seated on the abutment seating portion 320 of the fixture 350, and then the first screw 350 is By rotating the first screw 350 in the state inserted into the first screw insertion hole 310 through the second screw insertion hole 210 , the abutment 200 is firmly fixed to the fixture 300 . will do

Next, the crown 100 is inserted into the upper part of the abutment 200 and assembled (step 2, S-2).

At this time, the assembly of the crown 100 and the abutment 200 is performed by fitting the protrusion 230 formed on the abutment 200 into the abutment seating groove 121 formed on the crown 100 . can be assembled

In this case, the protrusion 230 and the abutment seating groove 121 may be formed one by one, or two or more may be formed in plurality. Preferably, two or more are formed to balance each other, for example, in the case of two, they are formed at intervals of 180 degrees so as to be symmetrical, and in the case of three, they are formed at intervals of 120 degrees.

Next, the crown 100 is fixedly coupled to the abutment 200 by screwing the crown 100 and the abutment 200 (step 3, S-3).

At this time, since the abutment 200 is already fixedly coupled to the fixture 300 in the first step, the fixture 300, the abutment 200 and the crown 100 are completely formed by going through the third step. fixedly coupled.

Looking at the process of fixing and coupling the crown 100 to the abutment 200 , the abutment 200 has a cutting part 220 and a protrusion 230 formed therein, and the protrusion 230 is a crown Since it is seated and assembled in the abutment seating groove 121 of 100 , the second screw 250 is inserted into the second screw insertion hole 210 through the screw insertion hole 110 . By rotating the screw 250 , the crown 100 is firmly fixed to the abutment 200 . At this time, since the cutting part 220 is formed on the upper part of the abutment 200 , the upper peripheral surface of the abutment 200 is formed by the cutting part 220 in the process of fastening the second screw 250 . Therefore, the coupling of the crown 100 and the abutment 200 is firmly coupled even if the cement (adhesive) bonding process that is generally made is omitted.

In addition, by fastening the bottom surface of the second screw 250 to abut against the head portion of the first screw 350 , the crown 100 , the abutment 200 , and the fixture 300 may be closely coupled. let it be

As described above, the description of the present invention has been made by the embodiments with reference to the accompanying drawings, but the embodiments describe preferred embodiments, and are not limited only to the embodiments, and the scope of protection of the present invention is It should be understood as a concept of claims and equivalents.

100 : Crown
110: screw insertion hole
120: abutment coupling part
121: abutment seating groove
200: abutment
210: second screw insertion hole
220: cutting unit
221: thread part
230: protrusion
250: second screw
300 : fixture
310: first screw insertion hole
320: abutment seating part
350: first screw

Claims (6)

The abutment 200 in which the second screw insertion hole 210 is formed in the center, and the cutting part 220 and the protrusion 230 are formed in the upper outer side;
An abutment coupling part 120 to which the upper side of the abutment 200 is inserted and coupled is formed in the lower inner side, and a screw insertion hole 110 is formed in the inner center, and the abutment coupling part 120 is formed. a crown 100 in which an abutment seating groove 121 in which the protrusion 230 of the abutment 200 can be seated is formed;
a fixture 300 in which a first screw insertion hole 310 is formed in a central lower portion and an abutment seating portion 320 is formed in the center upper portion so that the abutment is seated;
The first screw insertion hole 310 formed in the fixture 300 communicates with the second screw insertion hole 210 formed in the abutment 200,
In the first screw insertion hole 310, a first screw 350 is inserted from the second screw insertion hole 210, and the abutment 200 is fixedly installed in the fixture 300,
A second screw 250 is inserted into the second screw insertion hole 210 from the screw insertion hole 110 of the crown 100 , and the crown 100 is fixedly installed in the abutment 200 , ,
The cutting part 220 of the abutment 200 is made of one or more,
The protrusion 230 of the abutment 200 is made of one or more outside the upper side of the abutment 200,
The upper portion of the protrusion 230 is formed in a horizontal form,
The upper portion of the abutment seating groove 121 is also formed in a horizontal shape to correspond to the protrusion 230,
The second screw 250, the diameter of the upper part of the part where the screw line is formed is larger than the diameter of the lower part, that is, it is made in the shape of a cone in which the head is cut off,
A threaded portion 221 is formed in the central upper inner side of the abutment 200 to correspond to the second screw 250 ,
The bottom surface of the first screw (350) is coupled to the head surface of the second screw (250), characterized in that the coupling, implant crown fastening structure.
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