WO2019194612A1

WO2019194612A1 - Tilted implant

Info

Publication number: WO2019194612A1
Application number: PCT/KR2019/004023
Authority: WO
Inventors: 김수홍
Original assignee: (주) 코웰메디
Priority date: 2018-04-06
Filing date: 2019-04-05
Publication date: 2019-10-10

Abstract

The disclosed invention relates to a tilted implant, which can be easily implanted without the splitting of a tilted abutment, a decrease in fastening force, or a degradation of structural strength even though the implant is applied to the alveolar bone portion having an obliquely formed root axis, and can allow the tilted abutment to be easily fastened to a fixture even though the tilted abutment bent at an angle of 15 degrees or more is applied. One embodiment of the disclosed invention provides a tilted implant comprising: a fixture buried in and fixed to the alveolar bone, and having a fastening hole; a tilted abutment at which a vertical part fixed to the fixture and a tilted part to which a crown is fixed are integrally formed, wherein the vertical part has a fastening bolt insertion hole, and the tilted part has a rotary tool insertion hole formed to be inclined so as to communicate with the fastening bolt insertion hole; and a fastening bolt, which is inserted from the lower part to the upper part thereof through the fastening bolt insertion hole of the tilted abutment, and is rotated by means of a rotary tool inserted through the rotary tool insertion hole of the tilted abutment and fastened to the fastening hole of the fixture so as to press and fix the tilted abutment to the fixture.

Description

Inclined implant

The present disclosure relates to an inclined implant applied to the alveolar bone in which the root axis is inclined.

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.

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, for example, tooth decay, they cause chewing problems, so they cannot chew food properly and are not digested well. do. For this reason, teeth have long been recognized as an important part of the body and play an important role in living a healthy life.

In general, humans have a total of 32 teeth including 16 teeth in the maxilla and 16 teeth in the mandible, and after the childish teeth are replaced with permanent teeth once in childhood, they use oral activity for a lifetime. To perform.

Since a human tooth is replaced with a permanent tooth once in childhood, when a tooth is lost, new teeth are no longer formed. Thus, a dental tooth repairs a tooth or a surrounding tissue that has been lost through prosthetic treatment.

For example, in the case of universal prostheses such as bridges, partial dentures, and dentures, there is a problem of causing inconvenience in use due to a foreign body, and in recent years, when a tooth defect occurs, it is almost the same as a natural tooth without damaging the surrounding teeth or tissues. Dental implants that are able to restore all function and appearance are in the limelight.

Dental implants are largely composed of a fixture fixed to the alveolar bone, an abutment coupled to the fixture, and a crown integrally coupled to the abutment. Fixtures correspond to artificial roots embedded in the alveolar bone, abutments serve to connect the fixtures and crowns, and crowns correspond to artificial teeth that reproduce the same shape and function as natural teeth.

However, in the case of the alveolar bone where the root axis is inclined, for example, the dental implant is not easy. The reason is that the axis of the crown corresponding to the front teeth is close to the vertical, whereas the alveolar bone is inclined to the root axis of the structure so that the fixture must be inclined to the alveolar bone. In order to solve this problem, an inclined implant including an inclined abutment is proposed.

As an example of such an inclined implant, as an example of the Republic of Korea Patent Publication No. 10-2013-0037009 (published on April 15, 2013), in the implant to be treated on the inclined alveolar bone, the implant is fixed to the alveolar bone, the crown shaft A fixture having a fixing hole formed inclined with respect to the root axis so as to be parallel to the abutment, an abutment having a fastening hole communicating with the fixing hole, and screwed into the fastening hole and the fixing hole sequentially An inclined implant is disclosed that includes a set screw that secures the abutment to a fixture.

However, in the case of the inclined implant described above, the fixing hole for fixing the abutment is inclined to the fixture, so that the diameter of the fixing hole cannot be increased due to the structure of the fixture.

In addition, as another example of the inclined abutment, Korean Patent Publication No. 10-2014-0105098 (published on September 1, 2014) includes a body, a fixture having a hollow formed inside the body, and inserted into the hollow part. A lower abutment having an insertion portion to be formed, an inclined portion extending from the insertion portion while forming an acute angle with the central axis of the insertion portion, and fixing the lower abutment and the body to each other through the lower abutment An inclined implant including a fixing screw to be attached and an upper abutment detachably fastened to the inclined portion is disclosed.

However, in the case of the above-mentioned inclined implant, the abutment should be separated into the lower abutment and the upper abutment so that the fixing screw can be easily inserted by inserting the fixing screw from the top to the bottom to fix the abutment to the fixture. There is a problem.

In addition, as another example of the inclined implant, Japanese Patent Application Laid-Open No. 2014-147431 (published on Aug. 21, 2014) is an abutment having a mounting hole into which a fastening bolt is inserted to be installed on an artificial tooth embedded in a jawbone. It is formed so as to extend in the inclined direction with respect to the root extending direction has a post portion formed with a fixing hole for screwing the fixing bolt for fixing the prosthetic member, the mounting hole is the first hole on the artificial tooth side and the fastening bolt And a partition wall for partitioning the second hole and the fixing hole, wherein the portion opposite to the tip side of the post portion away from the second hole is the tip end thereof. It is provided with the opposing wall which opposes the part of the side, At least a part of the said 2nd hole side wall surface in the said opposing wall is with respect to the axis of the said 1st hole An opposite wall inclined surface inclined in a direction opposite to the direction in which the post portion extends, and at least a part of the second hole side wall surface in the partition wall is inclined in a direction opposite to the direction in which the post portion extends with respect to the axis center of the first hole; Is installed as a partition wall slope, and when the abutment is mounted to the artificial tooth by the fastening bolt, the head portion of the fastening bolt is the axial center of the first hole by the opposite wall slope and the partition wall slope. An inclined abutment and an implant comprising the same are disclosed after being guided in an inclined direction with respect to the first hole.

In the case of the above-described inclined abutment and the implant including the same, the inclined abutment is formed in one piece instead of being separated into the lower abutment and the upper abutment, but is relatively relative to the inclined abutment to insert the fastening bolt. A large second hole must be formed. Therefore, the structural strength of the inclined abutment is not only lowered, but also difficult to apply to the inclined abutment bent at an angle of 15 degrees or more.

In addition, in the case of the above-described inclined abutment and the implant including the same, the inclined abutment and the fastening bolt are separated into separate parts, so that the fastening bolt may be released into the oral cavity of the user during the procedure. There was a problem that the risk of swallowing the fastening bolt.

Although the root axis is applied to the alveolar bone portion formed to be inclined, to provide an inclined implant that can be easily performed without dividing the inclined abutment, lowering the fastening force and lowering the structural strength.

In addition, even if the oblique abutment bent at an angle of 15 degrees or more is applied to provide an inclined implant to facilitate the fastening of the inclined abutment to the fixture.

In addition, once the fastening bolt is coupled to the inclined abutment, it can not escape up and down from the inclined abutment, so that an accident due to the detachment of the fastening bolt during the procedure can be prevented in advance. Accordingly, it is intended to provide an inclined implant such that the fastening bolt can be easily rotated in the disengaging direction at a predetermined force or more to be separated from the fixture.

The disclosed contents are fixed to the alveolar bone and a fixture in which a fastening hole is formed, a vertical part fixed to the fixture and an inclined part fixed to the crown are integrally formed, and a fastening bolt insertion hole is formed in the vertical part, and the rotating tool is formed on the inclined part. An inclined abutment is formed to be inclined so that the insertion hole is in communication with the fastening bolt insertion hole, and is inserted from the bottom through the fastening bolt insertion hole of the inclined abutment and through the rotary tool insertion hole of the inclined abutment. An inclined implant including a fastening bolt which is rotated by an inserted rotary tool to be fastened to the fastening hole of the fixture and pressurizes the inclined abutment to the fixture is presented as an embodiment.

According to a preferred feature of the disclosure, a first forward thread is formed in the fastening hole of the fixture, a first reverse thread is formed in the fastening bolt insertion hole of the inclined abutment, and the first reverse direction is formed on the fastening bolt. A second reverse thread thread corresponding to the thread is formed, and a second forward thread thread corresponding to the first forward thread is formed below the fastening bolt.

In addition, the disclosed content is fixed to the alveolar bone and the fixing screw hole is formed, the vertical portion fixed to the fixture and the inclined portion is fixed to the crown is formed integrally, the vertical portion is formed with a fastening bolt insertion hole formed with an annular stepped groove And the inclined portion is inclined abutment formed to be inclined so as to communicate with the fastening bolt insertion hole, and the inclined abutment is inserted from the bottom to the upper direction through the fastening bolt insertion hole of the inclined abutment and the inclined abutment Rotating drive by the rotary tool inserted through the rotary tool insertion hole of the lower circumference is formed with a male screw to be fastened to the fastening screw hole of the fixture and the upper circumference of the fastening bolt is formed tapered pressure portion is reduced to the lower portion And an upper circumference inserted between the male thread portion and the tapered pressure portion of the fastening bolt. The vertical cutting portion is formed to facilitate the expansion through the tapered pressing portion and the through coupling of the fastening bolt, the outer peripheral surface of the upper end of the annular projection is inserted into the annular stepping groove of the fastening bolt insertion hole is formed and the fastening on the upper inner peripheral surface In one embodiment, an inclined implant including a bushing having a tapered pressing surface whose diameter decreases downwards to correspond to the tapered pressing portion of the bolt is provided.

According to a preferred feature of the disclosure, the outer diameter of the bushing corresponds to the inner diameter of the fastening bolt insertion hole of the inclined abutment, the annular projection of the bushing with a clearance in the annular step groove of the inclined abutment When the fastening bolts are fastened to the fixture, the tapered pressurization portion of the fastening bolts opens radially as the pressure is applied to the tapered pressurization surface of the bushing, thereby closely adhering to the annular stepped groove of the inclined abutment. It is fixed.

The inclined implant according to the present disclosure is inclined while the fastening bolt is inserted through the vertical portion of the inclined abutment from bottom to top by reverse rotation and then rotated in a forward direction by a rotary tool inserted through the inclined portion of the inclined abutment. As the abutment is formed into a structure for fastening and fixing the abutment, although it is applied to the alveolar bone portion in which the root axis is inclined, it can be easily performed without dividing the inclined abutment, lowering the fastening force or lowering the structural strength. There is this.

In addition, the inclined implant according to the present disclosure has an advantage that the inclination of the inclined abutment to the fixture can be easily made even if the inclined abutment bent at an angle of 15 degrees or more.

In addition, the inclined implant according to the disclosed contents, once the fastening bolt is coupled to the inclined abutment can not escape from the inclined abutment up and down anywhere, thereby preventing accidents due to detachment of the fastening bolt during the procedure. After the procedure, there is an advantage that the fastening bolt can be easily rotated in the disengaging direction at a predetermined force or more as necessary after the procedure to be separated from the fixture.

The effects of the present invention are not limited to the above-mentioned effects, 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 an inclined implant in accordance with one embodiment of the disclosed subject matter.

2 is an exploded perspective view of an inclined implant in accordance with one embodiment of the disclosed subject matter;

3 is a cross-sectional structural view of an inclined implant in accordance with one embodiment of the disclosed subject matter.

4 is an exploded perspective view of an inclined implant according to one embodiment of the disclosed subject matter comprising a fastening bolt of another embodiment;

Figure 5 is a procedure of the inclined implant according to an embodiment of the disclosed contents.

6 is a perspective view of an inclined implant in accordance with another embodiment of the disclosed subject matter.

7 is an exploded perspective view of an inclined implant in accordance with another embodiment of the disclosed subject matter.

8 is a cross-sectional structural view of an inclined implant according to another embodiment of the disclosed subject matter.

9 is an exploded perspective view of an inclined implant according to another embodiment of the disclosed subject matter comprising a fastening bolt of another embodiment.

10 is a procedure of the inclined implant according to another embodiment of the disclosed contents.

Hereinafter, with reference to the accompanying drawings looks at the configuration and effect of the inclined implant according to the preferred embodiment. For reference, in the 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 throughout the specification refer to the same components and reference numerals for the same components in the individual drawings will be omitted.

1 is a perspective view of an inclined implant according to an embodiment of the disclosed subject matter, FIG. 2 is an exploded perspective view of an inclined implant according to an embodiment of the disclosed subject matter, and FIG. 3 is a cross-sectional view of an inclined implant according to an embodiment of the disclosed subject matter It is a structural diagram.

The inclined implant according to an embodiment of the present disclosure is applied to the alveolar bone in which the root axis is formed to be inclined, for example, the incisor portion, and replaces the missing tooth. As shown in FIGS. 1 to 3, the buried implant is fixed to the alveolar bone. And a fixture 10 in which the fastening hole 13 is formed, a vertical portion 20a fixed to the fixture 10, and an inclined portion 20b fixed to the crown (not shown) are integrally formed, and the vertical portion 20a. ), A fastening bolt insertion hole 21 is formed, and the inclined portion 20b includes an inclined abutment 20 in which the rotary tool insertion hole 25 is inclined so as to communicate with the fastening bolt insertion hole 21, and reverse rotation. The rotary tool 40 is inserted from the bottom 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. Rotate in the forward direction by the fastening hole 13 of the fixture (10) A standing inclined abutment (20) and a fastening bolt 30 for fixing the pressing fixture 10.

Here, the fixture 10 corresponds to an artificial root embedded in the alveolar bone, the outer peripheral surface is formed with a screw thread 11 for being fixed in the alveolar bone, the upper surface of the fastening hole for fastening the fastening bolt 30 (13) is formed. In particular, the fastening hole 13 of the fixture 10 is formed with a first forward screw thread 15 for screwing the fastening bolt 30.

Since the structure, material, and manufacturing method of the fixture 10 are already known in the dental implant field, further details will be omitted for simplicity of the specification.

The oblique abutment 20 is fixed to the above-described fixture 10. The inclined abutment 20 is a connecting member for connecting the fixture 10 embedded in the alveolar bone in which the root axis is inclined and the crown (not shown) arranged almost vertically to each other. The vertical abutment is fixed to the fixture 10. The portion 20a and the inclined portion 20b to which the crown (not shown) is fixed are integrally formed.

The vertical portion 20a of the inclined abutment 20 forms a lower connection portion which is press-fitted into the fastening hole 13 of the fixture 10, and the fastening bolt 30, which will be described later, is inserted upwards and downwards. Corresponds to the lower side of the inclined abutment 20 to guide the movement.

In the vertical portion 20a, a fastening bolt insertion hole 21 into which the fastening bolt 30 to be described later is inserted from the bottom to the upper direction is formed in the vertical direction. A first reverse thread 23 is formed around the lower side of the fastening bolt insertion hole 21 to be inserted while the fastening bolt 30 is rotated in the reverse direction.

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

The inclined portion 20b is formed to be inclined such that the rotary tool insertion hole 25 into which the rotary tool 40 is inserted to rotate the fastening bolt 30 in the forward direction is in communication with the fastening bolt insertion hole 21.

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

The inclined abutment 20 described above is fixed to the fixture 10 by the fastening bolt 30. The fastening bolt 30 is rotated in the reverse direction through the fastening bolt insertion hole 21 of the inclined abutment 20 and is inserted from the bottom to the upper direction, and inserts the rotary tool insertion hole 25 of the inclined abutment 20. It is rotated in the forward direction by the rotary tool 40 inserted through it is fastened to the fastening hole 13 of the fixture 10 while pressing the fixed abutment 20 to the fixture (10).

The fastening bolt 30 is rotated in the opposite direction through the fastening bolt insertion hole 21 of the inclined abutment 20 so that the fastening bolt 30 can be inserted in the upper direction, the inclined abutment ( A second reverse thread thread 31 corresponding to the first reverse thread thread 23 formed in the fastening bolt insertion hole 21 of 20 is formed.

In addition, 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. By rotating in the forward direction to be fastened to the fastening hole 13 of the fixture 10, the lower portion of the fastening bolt 30 corresponds to the first forward screw thread 15 formed in the fastening hole 13 of the fixture 10 A second forward screw thread 33 is formed.

In addition, the fastening bolt 30 may be rotated in the fastening bolt insertion hole 21 of the inclined abutment 20 by the rotary tool 40, the drive connection groove (on the upper surface of the fastening bolt 30) 35 is formed to be recessed and the end of the rotary tool 40 is inclinedly inserted into the drive connecting groove 35 of the fastening bolt 30 so that the driving force of the rotating tool 40 is transmitted to the fastening bolt 30 41 is formed.

As shown in Figures 2 and 3 so that the fastening bolt 30 can be smoothly rotated by the rotary tool 40, the drive connecting projection 41 of the rotary tool 40 is formed with a first ring tooth The drive connecting groove 35 of the fastening bolt 30 may be formed as a groove in which a second ring tooth is formed in which the first ring tooth is engaged.

In addition, the driving connecting projection 41 of the rotary tool 40 and the driving connecting groove 35 of the fastening bolt 30 are various regardless of the shape if the rotational force of the rotating tool 40 can be transmitted to the fastening bolt 30. It is also possible to form an interconnect structure. For example, the driving connecting protrusion 41 of the rotary tool 40 may be formed in the form of a polygonal rod, in which case the driving connecting 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 disclosed contents including a fastening bolt of another embodiment.

In addition, as shown in FIG. 4, the fastening bolt 30 may be rotated in the fastening bolt insertion hole 21 of the inclined abutment 20 by the rotary tool 40. Drive connection protrusions 37 are formed on the upper surface of the drive connection grooves 35 instead of the drive connection grooves 35, and the drive connection protrusions 37 of the fastening bolts 30 instead of the drive connection protrusions 41 at the end of the rotary tool 40. The drive connecting groove 43 may be formed to be recessed so as to be inclined to the rotating tool 40 so that the rotational force of the rotary tool 40 is transmitted to the fastening bolt 30.

As shown in FIG. 4 so that the fastening bolt 30 can be smoothly rotated by the rotary tool 40, the driving connecting protrusion 37 of the fastening bolt 30 has a ball shape having a first ring-shaped tooth. The driving connecting groove 43 of the rotary tool 40 may be formed as a groove in which a second ring tooth is formed to which the first ring tooth is engaged.

In addition, the driving connecting protrusion 37 of the fastening bolt 30 and the driving connecting groove 43 of the rotary tool 40 are various regardless of the shape if the rotational force of the rotary tool 40 can be transmitted to the fastening bolt 30. It is also possible to form an interconnect structure. For example, the driving connecting protrusion 37 of the fastening bolt 30 may be formed in the form of a polygonal rod, in which case the driving connecting groove 43 of the rotary tool 40 may be formed as a polygonal groove.

In addition, although not shown, the fastening bolt 30 is one that includes an additional drive connection groove or a drive connection protrusion, the drive connection groove 35 or the drive connection protrusion 37 of which is adjustable in angle and driven so as to transmit rotational force. Or it may further comprise a plurality of angle controllable connectable angle. In addition, the rotary tool 40 is adjustable in angle to the drive connecting protrusion 41 or the drive connecting groove 43, the drive is connected so that the rotational force is transmitted, and one or multiple stages connectable including another drive connecting projection or drive connecting groove It may further include a plurality of angle adjusters.

In addition, the polygonal hole 17 connected to the fastening hole 13 is fastened to the fixture 10 so that the oblique abutment 20 does not rotate to the fixture 10 during the forward rotation of the fastening bolt 30. 13 is formed in communication with the upper portion of the inclined abutment 20, the lower end of the vertical portion (20a) of the polygonal projection 27 is inserted into the polygonal hole 17 of the fixture 10 is formed rotatably desirable.

5 is a procedure flowchart of an inclined implant according to one embodiment of the disclosed contents. Hereinafter, the procedure and operation relationship of the inclined implant according to an embodiment of the present disclosure will be described with reference to FIGS. 1 to 5.

First, as shown in FIG. 5, the fixture 10 is formed in the vertical portion 20a of the inclined abutment 20 in a state where the fixture 10 is embedded in the alveolar bone where the root axis is formed to be inclined, such as the front teeth. Insert the upper side of the fastening bolt 30 in the fastening bolt insertion hole 21 and rotate in the reverse direction.

At this time, the second reverse thread thread 31 of the fastening bolt 30 is engaged with the first reverse thread thread 23 in the fastening bolt insertion hole 21, and the upper side of the fastening bolt 30 is inclined abutment 20. It is inserted into the fastening bolt insertion hole 21 formed in the vertical portion (20a). The fastening bolt 30 is engaged with the second forward screw thread 33 without being screwed to the first reverse thread thread 23 in the fastening bolt insertion hole 21 at the time of reverse rotation, so that the second forward screw thread 33 is Acts as a stopper for reverse rotation.

Next, the rotary tool 40 is inserted into the rotary tool insertion hole 25 formed in the vertical portion 20a of the inclined abutment 20 to drive the driving projection 41 or the driving connection of the rotary tool 40. The groove 43 is driven to be connected to the driving connecting groove 35 or the driving connecting projection 37 formed on the upper surface of the fastening bolt 30.

At this time, the rotary tool 40 may be formed by a manual driver, or in the form of an automatic handpiece according to the embodiment.

Then, when the rotary tool 40 is rotated in the forward direction, the second forward thread 33 of the fastening bolt 30 is engaged with the first forward thread 15 in the fastening hole 13 of the fixture 10. The fastening bolt 30 is moved downward while being fastened.

As the second reverse thread thread 31 of the fastening bolt 30 is caught without being screwed to the first reverse thread thread 23 in the fastening bolt insertion hole 21 at the time of forward rotation, the inclined abutment 20 is also caught. While moving downward, the vertical portion 20a of the inclined abutment 20 is press-fixed to the fixture 10.

The inclined implant according to an embodiment of the present disclosure, after the fastening bolt 30 is inserted through the vertical portion 20a of the inclined abutment 20 from the bottom to the upper side by the reverse rotation inclined abutment ( Rotating in the forward direction by the rotary tool 40 inserted through the inclined portion 20b of the 20 is formed in a structure to fasten the inclined abutment 20 to the fixture 10, the root axis is formed to be inclined Despite being applied to the alveolar bone area, the oblique abutment 20 can be easily performed without dividing, decreasing fastening force or lowering structural strength.

In addition, the inclined implant according to an embodiment of the present disclosure, as the fastening bolt 30 is formed in a structure that is inserted from the bottom to the top direction rather than inserted into the inclined abutment 20 from the top, 15, Even if the inclined abutment 20 bent at an angle greater than or equal to that is applied, the fastening and fastening of the inclined abutment 20 to the fixture 10 may be easily performed.

6 is a perspective view of an inclined implant in accordance with another embodiment of the disclosed subject matter, FIG. 7 is an exploded perspective view of an inclined implant in accordance with another embodiment of the disclosed subject matter, and FIG. 8 is a cross-sectional view of an inclined implant in accordance with another embodiment of the disclosed subject matter. It is a structural diagram.

The inclined implant according to another embodiment of the present disclosure is applied to the alveolar bone in which the root axis is formed to be inclined, for example, the incisor portion, and replaces the missing tooth. As shown in FIGS. 6 to 8, the buried implant is embedded in the alveolar bone. And a fixture 110 having a fastening screw hole 113 formed therein, a vertical portion 120a fixed to the fixture 110 and an inclined portion 120b fixed with a crown (not shown) are integrally formed, and a vertical portion ( A fastening bolt insertion hole 121 having an annular stepped groove 123 is formed in 120a, and an inclined portion 120b has an inclined portion formed such that the rotary tool insertion hole 125 is inclined so as to communicate with the fastening bolt insertion hole 121. Inserted from the bottom to the upper direction through the fastening bolt insertion hole 121 of the abutment 120 and the inclined abutment 120 and inserted through the rotary tool insertion hole 125 of the inclined abutment 120 It is driven by the rotating tool and fixed around the bottom The fastening bolt 130 and the fastening bolt 130 are formed with a male screw part 131 fastened to the fastening screw hole 113 of the 110 and a tapered pressure part 133 is formed in the upper circumference thereof, the diameter of which decreases downward. The vertical threaded portion 131 is sandwiched between the male screw portion 131 and the tapered pressing portion 133, and the upper circumference of the vertical bolt portion 131 facilitates the penetration of the fastening bolt 130 and the expansion by the tapered pressing portion 133. 141 is formed and an annular protrusion 143 is inserted into the annular stepped groove 123 of the fastening bolt insertion hole 121 is formed on the upper outer peripheral surface and the tapered pressing portion 133 of the fastening bolt 130 on the upper inner peripheral surface. It includes a bushing 140 is formed with a tapered pressure surface 145 is reduced in diameter toward the bottom to correspond to.

Here, the fixture 110 corresponds to an artificial root that is fixed to the alveolar bone, the outer peripheral surface is formed with a thread 111 for fixing to be embedded in the alveolar bone, the upper surface is fastened for fastening or fastening the fastening bolt 130 The pores 113 are formed.

Since the structure, material, and manufacturing method of the fixture 110 are already known in the dental implant art, further details will be omitted for simplicity of the specification.

The oblique abutment 120 is fixed to the above-described fixture 110. The inclined abutment 120 is a connecting member connecting the fixture 110 and the crown (not shown) embedded in the alveolar bone in which the root axis is inclined to each other, the vertical portion 120a fixed to the fixture 110 and the crown An inclined portion 120b to which (not shown) is fixed is integrally formed.

The vertical portion 120a of the inclined abutment 120 forms a lower connection portion which is press-fitted into the fastening screw hole 113 of the fixture 110, and the fastening bolt 130, which will be described later, is inserted from the bottom upwards. Corresponds to the lower side of the inclined abutment 120 to guide the movement.

In the vertical portion 120a, a fastening bolt insertion hole 121 into which the fastening bolt 130 to be described later is inserted from the bottom to the upper direction is formed in the vertical direction. An intermediate stepped groove 123 into which the annular projection 143 of the bushing 140 to be described later is formed in the middle circumference of the fastening bolt insertion hole 121 is formed radially outward.

The inclined portion 120b of the inclined abutment 120 corresponds to an upper portion of the inclined abutment 120 to which a crown (not shown) extending almost vertically is fixed. The inclined portion 120b may be bent at an angle of 5 degrees to 60 degrees with respect to the extension line of the vertical portion 120a, and may be inclinedly extended, particularly, bent at an angle of 15 degrees to 30 degrees.

The inclined portion 120b is formed to be inclined so that the rotary tool insertion hole 125 into which the rotary tool 140 is inserted to rotate the fastening bolt 130 in the forward direction is in communication with the fastening bolt insertion hole 121.

Since the inclined abutment 120 is the same as a conventional abutment except that it is bent at a predetermined angle, further detailed description will be omitted here for the sake of brevity of the specification.

The inclined abutment 120 described above is fixed to the fixture 110 by the fastening bolt 130. The fastening bolt 130 is inserted from the bottom to the upper direction through the fastening bolt insertion hole 121 of the inclined abutment 120 and rotated through the rotary tool insertion hole 125 of the inclined abutment 120. It is rotated by the tool 150 and fastened to the fastening screw hole 113 of the fixture 110 to press-fix the oblique abutment 120 to the fixture 110.

The lower circumference of the fastening bolt 130 has a male screw part 131 fastened to the fastening screw hole 113 of the fixture 110. In addition, the upper peripheral portion of the fastening bolt 130 is formed with a tapered pressure portion 133 is reduced in diameter toward the bottom. The tapered pressurizing portion 133 presses the tapered pressurization of the bushing 140 to be described later according to the downward movement of the fastening bolt 130 when the male screw portion 131 is fastened to the fastening screw hole 113 of the fixture 110. A portion for pressing the surface 145 is formed in a truncated conical shape tapered downward.

In addition, the fastening bolt 130 may be rotated in the fastening bolt insertion hole 121 of the inclined abutment 120 by the rotary tool 150, the upper surface of the fastening bolt 130, the drive connecting groove ( 135 is recessed and the end of the rotary tool 150 is inclinedly inserted into the drive connecting groove 135 of the fastening bolt 130 so that the driving force of the rotating tool 150 is transmitted to the fastening bolt 130 151 is formed.

As shown in FIGS. 7 and 8 so that the fastening bolt 130 can be smoothly rotated by the rotary tool 150, the drive connecting projection 151 of the rotary tool 150 is formed with a first ring-shaped teeth The drive connecting groove 135 of the fastening bolt 130 is formed in a ball shape may be formed as a groove formed with a second ring-shaped teeth to be engaged with the first ring-shaped teeth.

In addition, the driving connecting protrusion 151 of the rotary tool 150 and the driving connecting groove 135 of the fastening bolt 130 are various regardless of the shape if the rotational force of the rotating tool 150 can be transmitted to the fastening bolt 130. It is also possible to form an interconnect structure. For example, the driving connecting protrusion 151 of the rotary tool 150 may be formed in the form of a polygonal rod. In this case, the driving connecting groove 135 of the fastening bolt 130 may be formed as a polygonal groove.

9 is a cross-sectional structural view of an inclined implant according to another embodiment of the disclosed subject matter including fastening bolts of another embodiment.

In addition, as shown in Figure 9, so that the fastening bolt 130 can be rotated in the fastening bolt insertion hole 121 of the inclined abutment 120 by the rotary tool 150, fastening bolt 130 The drive coupling protrusion 137 is formed on the upper surface of the driving coupling groove 135 instead of the driving coupling groove 135, and the driving coupling protrusion 137 of the fastening bolt 130 is used instead of the driving coupling protrusion 151 at the end of the rotary tool 150. The driving connecting groove 153 may be recessed to be inserted into the inclined portion so that the rotational force of the rotary tool 150 is transmitted to the fastening bolt 130.

As shown in FIG. 4 so that the fastening bolt 130 can be smoothly rotated by the rotary tool 150, the driving connecting protrusion 137 of the fastening bolt 130 has a ball shape in which a first ring-shaped tooth is formed. The driving connecting groove 153 of the rotary tool 150 may be formed as a groove in which a second ring tooth is formed to which the first ring tooth is engaged.

In addition, the driving connecting protrusion 137 of the fastening bolt 130 and the driving connecting groove 153 of the rotary tool 150 may be various regardless of the shape if the rotational force of the rotary tool 150 can be transmitted to the fastening bolt 130. It is also possible to form an interconnect structure. For example, the driving connecting protrusion 137 of the fastening bolt 130 may be formed in the form of a polygonal rod. In this case, the driving connecting groove 153 of the rotary tool 150 may be formed as a polygonal groove.

In addition, although not shown, the fastening bolt 130 is one that is connected to the drive connecting groove 135 or the driving connecting protrusion 137 and is connected to the driving force so that the rotational force is transmitted, and includes another driving connecting groove or the driving connecting protrusion. Or it may further comprise a plurality of angle controllable connectable angle. In addition, the rotary tool 150 is one or multi-stage connectable to the drive connecting projection 151 or the drive connecting groove 153, the drive is connected so that the rotational force is transmitted, and another drive connecting projection or drive connecting groove. It may further include a plurality of angle adjusters.

The above-mentioned fastening bolt 130 is inclined through the fastening bolt insertion hole 121 of the inclined abutment 120 with the bushing 140 fitted between the male screw portion 131 and the tapered pressing portion 133. It is inserted in the upper direction from the bottom of the butt 120.

The bushing 140 guides the fastening bolt 130 to be rotatably inserted into the fastening bolt insertion hole 121 of the inclined abutment 120 and is easily separated from the fixture 110 through rotation in the opposite direction. By doing so, it has a circular pipe shape having an outer diameter corresponding to the inner diameter of the fastening bolt insertion hole 121 of the inclined abutment (120).

A vertical cutout 141 is formed around the upper portion of the bushing 140. The vertical cutout 141 is to facilitate the expansion of the through bolts of the fastening bolt 130 and the tapered pressurizing part 133, and has a slit shape having a length corresponding to half of the vertical length of the bushing 140. Incision is made.

Although one vertical cutout 141 is formed around the top of the bushing 140 at an angle interval of 180 degrees, one vertical cutout 141 may be formed at an angle interval of one of 120 degrees and 90 degrees. In addition, one may be formed for every other angular interval.

An annular protrusion 143 fitted into the annular stepped groove 123 of the fastening bolt insertion hole 121 is protruded from the upper outer peripheral surface of the bushing 140. The annular projection 143 of the bushing 140 is fitted with a free space in the annular stepped groove 123 of the inclined abutment 120 and the fastening bolt when the fastening bolt 130 is fastened to the fixture 110. Clear space in the annular stepped groove 123 of the inclined abutment 120 as the tapered pressing portion 133 of the 130 presses the tapered pressing surface 145 of the bushing 140 in a radial direction It is fixed tightly without

In addition, the upper inner circumferential surface of the bushing 140 is formed with a tapered pressure surface 145 which is reduced in diameter downward to correspond to the tapered pressure portion 133 of the fastening bolt 130. The tapered pressing surface 145 is a tapered pressing portion of the fastening bolt 130 according to the downward movement of the fastening bolt 130 when the male screw portion 131 is fastened to the fastening screw hole 113 of the fixture 110 ( A portion pressurized radially outward by 133, and is formed as a truncated conical groove tapering downward from the upper end of the inner circumferential surface of the bushing 140.

10 is a procedure flowchart of an inclined implant according to another embodiment of the disclosed contents. Hereinafter, the procedure and operation relationship of the inclined implant according to another embodiment of the disclosed contents will be described with reference to FIGS. 6 to 10.

First, as shown in FIG. 10, the fixture 110 is buried in the alveolar bone where the root axis is inclined such as, for example, the front teeth, and the bushing 140 moves upward from the lower side of the fastening bolt 130. To be positioned between the male screw portion 131 and the tapered pressing portion 133 of the fastening bolt 130.

Next, the fastening bolt 130 is inserted into the fastening bolt insertion hole 121 formed in the vertical portion 120a of the inclined abutment 120 from the bottom to the upper direction. At this time, the annular projection 143 of the bushing 140 is fitted with a free space in the annular stepped groove 123 of the inclined abutment 120.

Next, the rotary tool 150 is inserted into the rotary tool insertion hole 125 formed in the vertical portion 120a of the inclined abutment 120 to drive the driving projection 151 or the driving connection of the rotary tool 150. The groove 153 is driven to be connected to the driving connecting groove 135 or the driving connecting projection 137 formed on the upper surface of the fastening bolt 130. In this case, the rotary tool 150 may be formed by a manual driver, or in some embodiments, may also be formed in the form of an automatic handpiece driver.

Then, when the rotary tool 150 is rotated in the fastening direction, the fastening bolt 130 is engaged while the male screw portion 131 of the fastening bolt 130 is engaged with the fastening screw hole 113 of the fixture 110 to be fastened. Is moved downward. At this time, the annular projection 143 of the bushing 140 is inclined while being opened in a radial direction as the tapered pressing portion 133 of the fastening bolt 130 presses the tapered pressing surface 145 of the bushing 140. The annular stepped groove 123 of the butt 120 is fixed without close space. In addition, the oblique abutment 120 is fixed to the fixture 110 while being in close contact with the fixture 110 by a fastening force of the fastening bolt 130 to the fixture 110.

In addition, if necessary, the rotary tool 150 may be rotated in a direction opposite to a predetermined force or more, in particular, a friction force between the tapered pressure portion 133 of the fastening bolt 130 and the tapered pressure surface 145 of the bushing 140. Rotating, while the male screw portion 131 of the fastening bolt 130 is released from the fastening screw hole 113 of the fixture 110, the oblique abutment 120 is the fastening bolt 130, the bushing 140 is coupled It may be separated from the fixture 110 in the inserted state.

In the inclined implant according to another embodiment of the present disclosure, the inclined portion of the inclined abutment 120 after the fastening bolt 130 is inserted into the vertical portion 120a of the inclined abutment 120 from the bottom to the upper direction As it is formed by a structure for fastening and fixing the inclined abutment 120 to the fixture 110 while being rotated by the rotary tool 140 inserted into the 120b, the root axis is inclined despite being applied to the alveolar bone formed to be inclined. It can be easily performed without dividing the abutment 120, lowering the fastening force or lowering the structural strength.

In addition, in the inclined implant according to another embodiment of the disclosure, after the fastening bolt 130 with the bushing 140 is fitted to the inclined abutment 120, the fastening bolt 130 is up and down from the inclined abutment. As it can not escape, the accident due to the detachment of the fastening bolt 130 during the procedure can be prevented in advance, and the fastening bolt is easily rotated in the disengaging direction at a predetermined force or higher as necessary after the procedure, and thus oblique abuts. There is an advantage that the 120 can be separated from the fixture 110.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the embodiments described in the specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention and represent all of the technical idea of the present invention. It is to be understood that there may be various equivalents and variations in place of them at the time of the present application. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from an equivalent concept should be construed as being included in the scope of the present invention.

The disclosure is applicable to inclined implants placed in the alveolar bone in which the root axis is inclined.

Claims

Fixtures buried in the alveolar bone and the fastening hole is formed;

The inclined abutment is formed to be inclined so that the vertical portion fixed to the fixture and the inclined portion to which the crown is fixed are integrally formed, and the fastening bolt insertion hole is formed in the vertical portion, and the rotary tool insertion hole is inclined to communicate with the fastening bolt insertion hole in the inclined portion. Treatment; And

The fastening hole of the fixture is rotated in a forward direction by a rotary tool inserted from the bottom through the fastening bolt insertion hole of the inclined abutment and inserted through the rotary tool insertion hole of the inclined abutment. An inclined implant comprising a fastening bolt for fastening and fixing the inclined abutment to the fixture while being fastened to the fixture.
The method according to claim 1,

A first forward thread is formed in the fastening hole of the fixture, and a first reverse thread is formed in the fastening bolt insertion hole of the inclined abutment.

A second reverse thread thread is formed on an upper portion of the fastening bolt, the second reverse thread thread corresponding to the first reverse thread thread and the lower end thereof being connected to an upper end of the first reverse thread thread of the inclined abutment when the fastening bolt is rotated forward. The lower portion of the bolt is inclined, characterized in that the second forward thread corresponding to the first forward screw thread, the upper end is formed at the lower end of the first reverse thread of the inclined abutment when the fastening bolt is rotated backward Implants.
The method according to claim 1,

A drive connection groove is formed in the upper surface of the fastening bolt, and a drive connection protrusion is formed at an end of the rotary tool to be inclined in the drive connection groove so that the rotational force of the rotary tool is transmitted to the fastening bolt. Inclined implant.
The method according to claim 1,

A drive connecting protrusion protrudes from an upper surface of the fastening bolt, and a drive connecting groove is inserted into the end of the rotating tool to be inclined to the drive connecting protrusion so that the rotational force of the rotating tool is transmitted to the fastening bolt. Inclined implant.
The method according to claim 3 or 4,

The drive connecting projection is formed in the shape of a ball formed with a first ring-shaped teeth and the drive connection groove is inclined implant, characterized in that formed with a groove formed with a second ring-shaped teeth to be engaged with the first ring-shaped teeth.
The method according to claim 1,

The fixture is formed with a polygonal hole connected to the fastening hole, the inclined implant, characterized in that the polygonal projection corresponding to the polygonal hole is formed on the lower side of the vertical portion of the inclined abutment.
Fixtures buried in the alveolar bone and the fastening screw holes are formed;

The vertical part fixed to the fixture and the inclined part to which the crown is fixed are integrally formed, and the vertical part is formed with a fastening bolt insertion hole having an annular stepped groove, and the inclined part is inclined so as to communicate with the fastening bolt insertion hole. Inclined abutment formed;

It is rotated and driven by a rotary tool inserted from the bottom to the upper direction through the fastening bolt insertion hole of the inclined abutment and inserted through the rotary tool insertion hole of the inclined abutment and around the lower part of the fastening screw hole of the fixture. A fastening bolt having a male screw part to be fastened and a tapered pressure part formed at a lower portion of the upper periphery to decrease in diameter; And

The fastening bolt is inserted between the male thread portion and the tapered pressing portion, and a vertical cutout is formed at the upper circumference to facilitate the penetration of the fastening bolt and expansion by the tapered pressing portion. An inclined implant including an bushing in which an annular protrusion fitted into the annular stepped groove is formed to protrude, and a tapered pressing surface whose diameter is reduced toward the lower portion thereof so as to correspond to the tapered pressing portion of the fastening bolt.
The method according to claim 7,

The outer diameter of the bushing corresponds to the inner diameter of the fastening bolt insertion hole of the inclined abutment, and the annular projection of the bushing is fitted with a free space in the annular stepped groove of the inclined abutment and the fastening bolt is fixed to the fixture. Inclined implant, characterized in that the tapered pressing portion of the fastening bolt is radially opened by pressing the tapered pressing surface of the bushing and tightly fixed to the annular stepped groove of the inclined abutment without a free space when fastened to .
The method according to claim 7,

The inclined implant, characterized in that the vertical incision of the bushing is formed by one for each angular interval of one of 180 degrees, 120 degrees and 90 degrees.
The method according to claim 7,

A drive connection groove is formed in the upper surface of the fastening bolt, and a drive connection protrusion is formed at an end of the rotary tool to be inclined in the drive connection groove so that the rotational force of the rotary tool is transmitted to the fastening bolt. Inclined implant.
The method according to claim 7,

A drive connecting protrusion protrudes from an upper surface of the fastening bolt, and a drive connecting groove is inserted into the end of the rotating tool to be inclined to the drive connecting protrusion so that the rotational force of the rotating tool is transmitted to the fastening bolt. Inclined implant.
The method according to claim 10 or 11,

The drive connecting projection is formed in the shape of a ball formed with a first ring-shaped teeth and the drive connection groove is inclined implant, characterized in that formed with a groove formed with a second ring-shaped teeth to be engaged with the first ring-shaped teeth.