KR101937298B1 - Inclined implant - Google Patents

Abstract

The present invention relates to an inclined implant, which can be easily operated without partition of an inclined abutment, and degradation in the fastening force or structural strength regardless of application to an alveolar bone part having a tooth root axis formed to be inclined thereon, and allows the inclined abutment to be easily fastened to a fixture even if the inclined abutment bent at an angle of 15 degrees is applied. According to an embodiment of the present invention, the inclined implant comprises: a fixture buried in and fixed to an alveolar bone, and having a fastening hole formed therein; an inclined abutment in which a vertical part fixed to the fixture and an inclined part fixed with a crown are integrally formed, wherein a fastening bolt insertion hole is formed in the vertical part, and a rotary tool insertion hole is formed to be inclined in communication with the fastening bolt insertion hole at the inclined part; and a fastening bolt upwardly inserted through the fastening bolt insertion hole of the inclined abutment, rotated by a rotary tool inserted through the rotary tool insertion hole of the inclined abutment to be fastened to the fastening hole of the fixture, and pressing and fixing the inclined abutment to the fixture.

Description

INCLINED IMPLANT < RTI ID = 0.0 >

The disclosed subject matter relates to an inclined implant to be applied to alveolar bone formed by inclining a root axis.

Unless otherwise indicated herein, the description set forth in this identification section is not prior art to the claims of this application and is not to be construed as prior art as described in this identification section.

Generally, a tooth is a body tissue that is responsible for a chewing function to help digest or grind food well. If such a tooth is lost due to, for example, tooth decay due to tooth decay, it can not be chewed properly and the digestion can not be performed because of problems in the function of chewing. Therefore, not only the food can not be freely consumed, do. For this reason, teeth have been recognized as an important part of the body since ancient times and play an important role in maintaining a healthy life.

Normally, humans have a total of 32 teeth including 16 teeth in the maxilla and 16 teeth in the mandible. After the childhood teeth are replaced with permanent teeth once in childhood, .

Since human teeth are replaced with permanent teeth once in childhood, new teeth are not formed even after loss of teeth. Therefore, the dentist restores missing teeth or surrounding tissues through prosthetic treatment.

For example, in the case of a universal prosthesis such as a bridge, a partial denture, a denture, etc., there is a problem that it causes inconvenience in use due to a foreign body feeling. Recently, Dental implants that are capable of restoring all functions and appearance are in the spotlight.

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 an artificial tooth fixed in the alveolar bone, the abutment connects the fixture and the crown, and the crown corresponds to the artificial tooth reproducing the same shape and function as the natural tooth.

However, for example, in the case of the alveolar bone area where the root axis is inclined like the front teeth, dental implant treatment is not easy. This is because the axis of the crown corresponding to the forearm is vertical, whereas the alveolar bone is structured such that the root axis is inclined and the fixture must be inclined to the alveolar bone. To solve this problem, an inclined implant including a tilted abutment is proposed.

One example of such an inclined implant is an implant disclosed in Korean Patent Laid-Open Publication No. 10-2013-0037009 (published on Apr. 13, 2013), which is inserted into an alveolar bone with a root shaft being inclined. The implant is inserted into the alveolar bone, A fixture having a fixing hole formed to be inclined with respect to the root axis so as to be parallel to the root axis so as to be parallel to the root axis and an abutment having a coupling hole communicating with the fixing hole, And a fixation screw for fixing the abutment to the fixture.

However, in the case of the above-mentioned slant implant, the fixture hole is inclined to fix the abutment to the fixture, so that the diameter of the fixation hole can not be increased in the structure of the fixture, and the fastening force of the abutment is deteriorated.

As another example of the inclined abutment, Korean Patent Laid-Open Publication No. 10-2014-0105098 (published on Apr. 1, 2014) discloses a fixture having a body and a hollow portion formed inside the body, A lower abutment having an acute angle with the central axis of the insert and extending from the insert, and a lower abutment penetrating the lower abutment to mutually fix the lower abutment and the body And an upper abutment detachably fastened to the inclined portion.

However, in the case of the above-mentioned oblique implant, the abutment should be separated into the lower abutment and the upper abutment so that the fastening screw can be inserted from the upper part to the lower part to fix the abutment to the fixture. .

Another example of the oblique implant is Japanese Patent Laid-Open Publication No. 2014-147431 (published on Aug. 21, 2014), which is an abutment having a mounting hole through which a fastening bolt for mounting to an artificial root implanted in the jawbone is inserted, And a post portion formed to extend in an oblique direction with respect to a direction in which the root extends so as to form a fixation hole into which a fixation bolt for securing the prosthesis member is screwed, wherein the fixation hole has a first hole on the side of the artificial tooth root, And a partition wall which separates the second hole and the fixing hole, wherein a portion of the post opposite to the front end portion of the post portion far from the second hole has a tip Wherein at least a part of the second hole sidewall surface of the opposed wall is located at an axial center of the first hole Wherein at least a part of the second hole sidewall surface of the partition wall is inclined toward the opposite side of the direction in which the post extends with respect to the axial center of the first hole, When the abutment is mounted on the artificial root by the fastening bolt, the head portion of the fastening bolt is guided by the opposite wall inclined surface and the inclined surface of the partition wall to the axial center of the first hole Is guided in an oblique direction with respect to the first hole and is received in the first hole, and an implant including the same.

In the case of the aforementioned inclined abutment and the implant including the inclined abutment, although the inclined abutment is integrally formed without being separated into the lower abutment and the upper abutment, the inclined abutment is formed relative to the inclined abutment to insert the fastening bolt A large second hole must be formed. Therefore, not only the structural strength of the inclined abutment is reduced but also it is difficult to apply the inclined abutment to the inclined abutment bent at an angle of 15 degrees or more.

Patent Document 1: Korean Patent Publication No. 10-2013-0037009 (published on April 15, 2013) Patent Document 2: Korean Patent Laid-Open No. 10-2014-0105098 (published on April 1, 2014) Patent Document 3: Japanese Patent Application Laid-Open No. 2014-147431 (published on Aug. 21, 2014)

The present invention provides an oblique implant that can be easily performed without the need of dividing the tilt abutment, deteriorating the fastening force, and reducing the structural strength, even though the root shaft is applied to the alveolar bone formed at an inclined position.

Also, it is an object of the present invention to provide an inclined implant which can be easily fastened to an inclined abutment against a fixture even when a bent inclined abutment bent at an angle of 15 degrees or more is applied.

Further, it is obvious that the present invention is not limited to the technical problems described above, and another technical problem may be derived from the following description.

The disclosed contents include a fixture which is fixedly embedded in an alveolar bone and in which a fastening hole is formed; A vertical portion fixed to the fixture and an inclined portion fixed to the crown are integrally formed, and a locking bolt insertion hole is formed in the vertical portion, and the inclined portion is formed with a slanting abutting portion formed to be inclined so that the rotary tool insertion hole communicates with the fastening bolt insertion hole ; And is inserted in the upward direction from the lower side through the fastening bolt insertion hole of the inclined abutment by the reverse rotation and rotated in the forward direction by the rotary tool inserted through the rotary tool insertion hole of the inclined abutment, And a fastening bolt for fastening and fixing the slant abutment to the fixture while being fastened to the ball, wherein a first positive thread is formed in the fastening hole of the fixture, and a second positive thread is formed on the lower inner circumferential surface of the fastening bolt insertion hole of the slant abutment Wherein a first reverse thread is formed on the outer circumferential surface of the fastening bolt to allow upward insertion of the fastening bolt in correspondence with the first reverse thread when the fastening bolt is rotated in the reverse direction, A second reverse thread formed on the top of the first reverse thread of the inclined abutment is formed And the lower end of the fastening bolt is provided with a downwardly fastening bolt, which is adapted to correspond to the first forward threaded thread when the fastening bolt is rotated in the forward direction, and at the time of reverse rotation of the fastening bolt, And a second positive screw thread connected to the lower end of the first reverse screw thread of the first reverse screw thread is formed spaced apart from the second reverse screw thread.

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The tilted implant according to the disclosed subject matter is inserted into the tilted abutment through the vertical portion of the tilted abutment from the lower portion to the upper portion by the reverse rotation by the reverse rotation and then is rotated in the forward direction by the rotary tool inserted through the inclined portion of the tilted abutment, And the abutment is fastened to and fixed to the fixture. Therefore, even though the root shaft is applied to the alveolar bone portion formed with the inclined apex, it is possible to easily perform the procedure without deteriorating the slanting abutment, .

Also, the inclined implant according to the disclosure has an advantage that the inclined abutment to the fixture can be easily fastened even if the inclined abutment bent at an angle of 15 degrees or more is applied.

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

1 is a perspective view of an oblique implant according to one embodiment of the teachings;
FIG. 2 is an exploded perspective view of an inclined implant according to an embodiment of the disclosure; FIG.
3 is a cross-sectional structural view of an inclined implant according to an embodiment of the disclosure;
4 is an exploded perspective view of an inclined implant according to an embodiment of the disclosure, including a fastening bolt in another embodiment;
Figure 5 is a procedure flow diagram of an oblique implant according to one embodiment of the disclosure;

Hereinafter, configurations and effects of an inclined implant according to a preferred embodiment will be described with reference to the accompanying drawings. For reference, in the following drawings, each component is omitted or schematically shown for convenience and clarity, and the size of each component does not reflect actual size. Like reference numerals refer to like elements throughout the specification, and the same reference numerals will be omitted in the drawings.

FIG. 1 is an exploded perspective view of an inclined implant according to an embodiment of the disclosure, FIG. 3 is an exploded perspective view of an inclined implant according to an embodiment of the disclosure, FIG. It is a structural diagram.

The inclined implant according to an embodiment of the present invention replaces a lost tooth applied to an alveolar bone formed by inclining a root axis such as a forepart, for example. As shown in Figs. 1 to 3, A vertical portion 20a fixed to the fixture 10 and an inclined portion 20b fixing a crown (not shown) are integrally formed and the vertical portion 20a And the inclined portion 20b is provided with an inclined abutment 20 which is inclined so that the rotary tool insertion hole 25 communicates with the fastening bolt insertion hole 21, The rotary tool 40 inserted in the upper direction from the lower side through the fastening bolt insertion hole 21 of the inclined abutment 20 and inserted through the rotary tool insertion hole 25 of the inclined abutment 20 by the fastening bolt insertion hole 21 of the inclined abutment 20, And is fastened to the fastening hole 13 of the fixture 10 A standing inclined abutment (20) and a fastening bolt 30 for fixing the pressing fixture 10.

The fixture 10 corresponds to the artificial root fixedly embedded in the alveolar bone. The outer surface of the alveolar bone 10 is formed with threads 11 to be fixed in the alveolar bone. The upper surface of the fixture 10 is provided with a fastening hole (13) is formed. In particular, the fastening hole 13 of the fixture 10 is formed with a first forward thread 15 for screwing the fastening bolt 30.

The structure, material, and manufacturing method of the fixture 10 have already been known in the field of dental implants, and a detailed description thereof will be omitted for the sake of simplification of the description.

In the fixture 10 described above, the inclined abutment 20 is fixed. The inclined abutment 20 is a connecting member connecting the fixture 10 embedded in the alveolar bone formed by inclining the tooth root and the crown (not shown) And an inclined portion 20b to which a crown (not shown) is fixed are integrally formed.

The vertical portion 20a of the inclined abutment 20 forms a lower connection portion which is pressed and fixed into the fastening hole 13 of the fixture 10 and the fastening bolt 30 to be described later is inserted from the lower portion to the upper portion, And corresponds to the lower portion of the inclined abutment 20 guiding the movement.

In the vertical portion 20a, a fastening bolt insertion hole 21 into which a fastening bolt 30 to be described later is inserted from the lower portion to the upper portion is formed in the vertical direction. A first reverse thread 23 is formed on the lower inner circumferential surface of the fastening bolt insertion hole 21 so that the fastening bolt 30 is inserted while being rotated in the reverse direction.

 The inclined portion 20b of the inclined abutment 20 corresponds to the upper portion of the inclined abutment 20 to which a crown (not shown) extending almost vertically is fixed. The inclined portion 20b may be inclined at an angle of 5 to 60 degrees with respect to an extension of the vertical portion 20a, and may be inclined at an angle of 15 to 30 degrees.

The rotary tool insertion hole 25 into which the rotary tool 40 for rotating the fastening bolt 30 in the forward direction is inserted is formed in the inclined portion 20b to be inclined so as to communicate with the fastening bolt insertion hole 21. [

Since the inclined abutment 20 is the same as a normal abutment except that it is bent at a predetermined angle, the detailed description will be omitted here for simplification of the description.

The inclined abutment 20 described above is pressed and fixed to the fixture 10 by the fastening bolt 30. The fastening bolts 30 are inserted in the upper direction from the lower side while being rotated in the reverse direction through the fastening bolt insertion holes 21 of the inclined abutment 20 and inserted into the rotary tool insertion holes 25 of the inclined abutment 20 Is rotated in the forward direction by the rotary tool 40 inserted through the fixture 10 and fastened to the fastening hole 13 of the fixture 10 so that the inclined abutment 20 is pressed and fixed to the fixture 10.

So that the fastening bolts 30 can be inserted in the upper direction from the lower side while being rotated in the reverse direction through the fastening bolt insertion holes 21 of the inclined abutment 20, A second reverse threaded portion 31 corresponding to the first reverse threaded portion 23 formed in the fastening bolt insertion hole 21 of the fastening bolt 20 is formed.

The fastening bolt 30 inserted into the fastening bolt insertion hole 21 of the inclined abutment 20 is inserted into the rotary tool 40 inserted through the rotary tool insertion hole 25 of the inclined abutment 20 A first forward thread 15 formed in the fastening hole 13 of the fixture 10 is provided on the lower outer circumferential surface of the fastening bolt 30 so that the fastening bolt 30 can be rotated in the forward direction and fastened to the fastening hole 13 of the fixture 10. [ And a corresponding second forward thread 33 is formed from the second reverse thread 31. [

The upper surface of the fastening bolt 30 is provided with a drive connection groove (not shown) so that the fastening bolt 30 can be rotationally driven in the fastening bolt insertion hole 21 of the inclined abutment 20 by the rotary tool 40 35 are inserted into the drive coupling groove 35 of the fastening bolt 30 and inserted into the drive coupling groove 35 of the fastening bolt 30 at the end of the rotary tool 40 so that the rotational force of the rotary tool 40 is transmitted to the fastening bolt 30. [ (41) is formed.

2 and 3, the drive coupling protrusion 41 of the rotary tool 40 is formed so that the first ring-shaped tooth is formed, as shown in FIGS. 2 and 3, so that the fastening bolt 30 can be smoothly rotated by the rotary tool 40. [ And the drive connection groove 35 of the fastening bolt 30 may be formed as a groove having a second ring-shaped tooth to which the first ring-shaped teeth are engaged.

The drive coupling protrusion 41 of the rotary tool 40 and the drive coupling groove 35 of the fastening bolt 30 may be formed in a variety of shapes regardless of the shape, if the rotational force of the rotary tool 40 can be transmitted to the fastening bolt 30. [ They can also be formed by a mutual coupling structure. For example, the drive coupling protrusion 41 of the rotary tool 40 may be formed in the form of a polygonal bar. In this case, the drive coupling groove 35 of the fastening bolt 30 may be formed as a polygonal groove.

4 is a cross-sectional structural view of an inclined implant according to an embodiment of the disclosure including a fastening bolt of another embodiment.

4, the fastening bolt 30 is fastened to the fastening bolt 30 so that the fastening bolt 30 can be rotationally driven in the fastening bolt insertion hole 21 of the inclined abutment 20 by the rotary tool 40. [ A drive coupling protrusion 37 is protruded from the upper surface of the rotary tool 40 and a driving coupling protrusion 37 of the coupling bolt 30 is provided at the end of the rotary tool 40 instead of the drive coupling protrusion 41. [ So that the rotational force of the rotary tool 40 can be transmitted to the fastening bolt 30. In this case,

4, the drive coupling protrusion 37 of the fastening bolt 30 is formed in a ball shape having a first ring-shaped tooth so that the fastening bolt 30 can be smoothly rotated by the rotary tool 40 And the drive connection groove 43 of the rotary tool 40 may be formed as a groove formed with a second ring-like tooth to which the first ring-shaped teeth are engaged.

The driving coupling protrusions 37 of the fastening bolts 30 and the driving coupling grooves 43 of the rotary tool 40 can be formed in a variety of shapes regardless of the shape of the fastening bolt 30 when the rotational force of the rotary tool 40 can be transmitted to the fastening bolts 30. [ They can also be formed by a mutual coupling structure. For example, the drive connection protrusion 37 of the fastening bolt 30 may be formed in the form of a polygonal bar. In this case, the drive connection groove 43 of the rotary tool 40 may be formed as a polygonal groove.

Although not shown, the fastening bolts 30 are rotatably connected to the driving coupling grooves 35 or the driving coupling projections 37 so as to be rotatable, Or a plurality of angular adjustment mechanisms capable of multi-stage connection. The rotary tool 40 is rotatably connected to the driving coupling protrusion 41 or the driving coupling groove 43 so as to be angularly adjustable and rotatably connected to the driving coupling protrusion 41 or the driving coupling groove 43, And may further include a plurality of angle adjusting members.

The polygonal hole 17 connected to the fastening hole 13 is formed in the fastener 10 so that the inclined abutment 20 is not rotated by the fixture 10 when the fastening bolt 30 is rotated in the forward direction, And a polygonal projection 27 is formed at the lower end of the vertical portion 20a of the inclined abutment 20 so as to communicate with the upper portion of the fixture 10 and the polygonal hole 17 of the fixture 10 so as to be non- desirable.

5 is a procedure flowchart of an oblique implant according to an embodiment of the disclosed subject matter. Hereinafter, the procedure and the operation of the oblique implant according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG.

5, the fixture 10 is formed in the vertical portion 20a of the inclined abutment 20, for example, in a state in which the root axis is embedded and fixed in the alveolar bone, The upper side of the fastening bolt 30 is inserted into the fastening bolt insertion hole 21 and rotated in the reverse direction.

At this time, the second reverse threads 31 of the fastening bolts 30 are engaged with the first reverse threads 23 of the fastening bolt insertion holes 21 so that the upper side of the fastening bolts 30 is engaged with the first reverse threads 23 of the inclined abutments 20 And inserted into the fastening bolt insertion hole 21 formed in the vertical portion 20a. As the fastening bolts 30 are fastened to the first reverse threads 23 in the fastening bolt insertion holes 21 without being screwed into the second fastening threads 33 during the reverse rotation, And serves as a stopper for the reverse rotation.

The rotary tool 40 is then inserted into the rotary tool insertion hole 25 formed in the vertical portion 20a of the inclined abutment 20 so that the driving coupling projection 41 of the rotary tool 40, The grooves 43 are driven and connected to the drive connection groove 35 or the drive connection protrusion 37 formed on the upper surface of the fastening bolt 30.

At this time, the rotary tool 40 may be formed by a manual screwdriver or, in some embodiments, in the form of an automatic handpiece.

Then, when the rotary tool 40 is rotated in the forward direction, the second forward threads 33 of the fastening bolts 30 are engaged with the first forward threads 15 in the fastening holes 13 of the fixture 10 The fastening bolts 30 are moved downward.

At this time, the second reverse threads 31 of the fastening bolts 30 are engaged with the first reverse threads 23 in the fastening bolt insertion holes 21 in the forward direction, The vertical portion 20a of the inclined abutment 20 is pressed and fixed to the fixture 10. As shown in Fig.

The inclined implant according to an embodiment of the disclosed subject matter is inserted into the inclined abutment 30 after the fastening bolt 30 is inserted through the vertical portion 20a of the inclined abutment 20 in the upward direction from the bottom by the reverse rotation 20 are formed in a structure in which the inclined abutment 20 is fixed to the fixture 10 while being rotated in the normal direction by the rotary tool 40 inserted through the inclined portion 20b of the fixture 20, It can be easily performed without dividing the inclined abutment 20, lowering the clamping force, or reducing the structural strength, even though it is applied to the alveolar bone region.

The inclined implant according to one embodiment of the present disclosure is formed such that the fastening bolt 30 is inserted into the inclined abutment 20 from the upper side to the lower side instead of being inserted from the upper side to the lower side, The inclined abutment 20 can be easily fastened and fixed to the fixture 10 even when the inclined abutment 20 bent at an angle equal to or greater than that of the inclined abutment 20 is applied.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the present invention. It is to be understood that various equivalents and modifications may be substituted for those at the time of the present application. It is to be understood, therefore, that the above description is intended to be illustrative, and not restrictive, and that the scope of the present invention will be defined by the appended claims rather than by the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

10: Fixtures
11: Threaded
13: fastening hole
15: First positive thread
17: multiple balls
20: inclined abutment
20a:
20b:
21: Fastening bolt insertion hole
23: 1st reverse thread
25: Rotating tool insertion hole
27: polygonal projection
30: fastening bolt
31: 2nd reverse thread
33: 2nd positive thread
35: drive connection groove
37: driving connection projection
40: Rotary tool
41: drive connection projection
43: drive connection groove

Claims (6)

A fixture fixedly embedded in the alveolar bone and formed with a fastening hole;
A vertical portion fixed to the fixture and an inclined portion fixed to the crown are integrally formed, and a locking bolt insertion hole is formed in the vertical portion, and the inclined portion is formed with a slanting abutting portion formed to be inclined so that the rotary tool insertion hole communicates with the fastening bolt insertion hole ; And
And is rotated in the forward direction by a rotary tool inserted through the fastening bolt insertion hole of the inclined abutment from the lower direction to the upper direction by the reverse rotation and inserted through the rotary tool insertion hole of the inclined abutment, And a fastening bolt for fastening the slant abutment to the fixture,
A first reverse thread is formed in the fastening hole of the fixture, a first reverse thread is formed on a lower inner circumferential surface of the fastening bolt insertion hole of the inclined abutment,
And an upper outer circumferential surface of the fastening bolt is adapted to be inserted upwardly in correspondence to the first reverse screw thread when the fastening bolt is rotated in the reverse direction and the lower end of the fastening bolt A second reverse thread is formed which is connected to the top of the one reverse thread,
Wherein the lower end of the fastening bolt is provided at a lower outer peripheral surface of the fastening bolt so as to enable downward fastening of the fastening bolt in correspondence with the first positive thread when the fastening bolt rotates in the forward direction, And a second forward thread is formed spaced from the second backward thread to be connected to the lower end of the first backward thread. delete The method according to claim 1,
A drive coupling groove is formed in an upper surface of the fastening bolt and a drive coupling protrusion is formed at an end of the rotary tool so as to be inserted into the drive coupling groove in an inclined manner to transmit rotational force of the rotary tool to the fastening bolt. Oblique implants. The method according to claim 1,
A drive coupling protrusion is formed on an upper surface of the fastening bolt and a drive coupling groove is formed in an end portion of the rotary tool so as to be slantly inserted into the drive coupling protrusion so that the rotational force of the rotary tool is transmitted to the fastening bolt. . The method according to claim 3 or 4,
Wherein the drive connection protrusion is formed in a ball shape having a first ring-shaped tooth and the drive connection groove is formed in a groove having a second ring-shaped tooth to which the first ring-shaped tooth is mated. The method according to claim 1,
Wherein the fixture is provided with a polygonal hole connected to the fastening hole and a polygonal projection corresponding to the polygonal hole is formed on the lower side of the vertical portion of the inclined abutment.

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