KR101707596B1

KR101707596B1 - Bi-acceptable abutment for dental implant

Info

Publication number: KR101707596B1
Application number: KR1020150057827A
Authority: KR
Inventors: 이기대; 이해용
Original assignee: 대구보건대학교산학협력단
Priority date: 2015-04-24
Filing date: 2015-04-24
Publication date: 2017-02-16
Also published as: KR20160126584A

Abstract

An abutment for interchangeability of dental implants is disclosed. The interchangeable abutment of the dental implant according to an embodiment of the present invention includes a healing abutment partially inserted and fixed into a fixture; And a final prosthesis abutment having one side inserted into the healing abutment and the other side exposed to the outside of the healing abutment, and the healing abutment is joined to the final prosthesis abutment, And a standard threaded portion for engagement or disengagement of the final prosthesis abutment.

Description

Bi-acceptable abutment for dental implant "

The present invention relates to an abutment for interchangeability of dental implants, and more particularly, to a method of making a final prosthesis abutment by adding a portion that is compatible with a healing abutment and a final prosthesis abutment The present invention relates to an abutment for interchangeability of dental implants that can contribute to reducing the time and cost of the operation of the implant.

Implant (dental implant) implies implantation or replacement of an artificially created artificial tooth in a dentist.

For example, the implant may indicate a series of procedures for restoring the function of the teeth by implanting a replacement root that can replace the missing root (root) in the alveolar bone in which the tooth has escaped, and then fixing the artificial tooth.

In addition, the implant may mean a replacement for restoring the tissue when the tissue is lost. In this case, the implant includes a fixture, an abutment fixed to the fixture, And a crown constituting an external shape of the crown.

In the case of regular prostheses or dentures, there is a risk that the surrounding teeth and bones, especially the surrounding dental tissue, may deteriorate over time.

However, since the implant does not injure the surrounding tooth structure and has the same function and shape as the natural teeth and does not have cavities, it has an advantage that it can be used semi-permanently.

In addition, the implants have the advantage of improving the denture function and improving the aesthetic aspects of dental prosthesis restoration, as well as single-tooth restoration, as well as partial and total toothless patients.

Furthermore, implants are often used in dentistry because they help to distribute excessive stresses on the surrounding supporting bone tissue as well as help stabilize their teeth.

Meanwhile, the dental implants can be classified into a gingival bone, that is, a surgical procedure for placing a fixture on the alveolar bone, and a prosthetic procedure for attaching an artificial tooth by connecting an abutment to the fixture.

1 and 2, (1) a fixture 10 as a dental implant fixture, (2) a healing abutment 20, (3) a healing abutment, Removing the abutment 20, (4) fastening the impression coping (not shown), (5) removing the impression coping, (6) re-tightening the healing abutment 20, (7) 20), (8) fastening the manufactured final prosthesis abutment 30 with an abutment screw 40, and (9) mounting a crown (not shown).

Here, the healing abutment 20 is a structure for temporarily fixing the fixture 10 until the bone is adhered to the bone, and the final prosthesis abutment 30 is a structure for engaging the crown.

At this time, in order to properly mount the crown as an artificial tooth, a final prosthesis abutment 30 is individually manufactured and used according to the individual characteristics of the patient.

However, in the conventional technique, in order to manufacture the final prosthesis abutment 30, the process of fastening and removing the healing abutment 20 is repeated several times, and the structure of the healing abutment 20 or the fixture 10, the final prosthesis abutment 30 can not be manufactured. Therefore, there is a problem that the time and effort required for manufacturing the final prosthesis abutment 30 is increased.

This is because the healing abutment 20 and the final prosthesis abutment 30 do not have any mutually compatible parts and the final prosthesis abutment 30 must be made entirely new from the beginning.

In the case of the conventional art, since too many steps are required to manufacture and use the final prosthesis abutment 30, the manufacturing process of the final prosthesis abutment 30 is increased, and the procedure time of the implant is delayed as a whole So that the cost of the final prosthesis abutment 30 is increased and the cost of the implant treatment is increased.

Korea Patent Office Application No. 20-2004-0010543

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a prosthetic abutment that is compatible with a healing abutment and a final prosthesis abutment, thereby significantly reducing the time and effort involved in fabricating the final prosthesis abutment And to provide an abutment for interchangeability of dental implants which can contribute to reducing the procedure time and cost of the implant.

According to an aspect of the invention, there is provided a healing abutment, the healing abutment being partially inserted into a fixture; And a final prosthesis abutment having one side inserted into the healing abutment and the other side exposed to the outside of the healing abutment, and wherein the healing abutment and the final restorative abutment are engaged, Wherein a standard threaded portion for coupling or disengaging the healing abutment and the final prosthetic abutment is formed in the abutment portion of the dental implant.

The standard threaded portion includes: a standard female threaded portion provided on an inner wall of the healing abutment; And a standard male screw portion provided on an outer wall of the final prosthesis abutment and screwed to the standard female screw portion.

A screw hole through which the screw passes may be formed in the healing abutment.

A shaft guide wall may be formed on an inner wall of the healing abutment to guide a non-threaded section of a shaft of the screw.

The shaft guide wall may be a straight line.

The screw may be a cover screw for shielding the screw hole.

The inner surface of the heeling abutment may be provided with a first head contact support portion to which the head of the cover screw is abutted.

The first head contact support portion may form an inclined surface that gradually narrows in width toward the fixture.

The first head contact support may be disposed adjacent to the final prosthesis abutment with reference to the standard female threaded portion.

The screw may be an abutment screw for securing the healing abutment to the fixture.

The inner surface of the heeling abutment may be provided with a second head contact support portion for supporting the head of the abutment screw.

And the second head contact support portion may be disposed adjacent to the fixture side with reference to the standard female thread portion.

The section between the standard female threaded portion and the second headed contact support on the inner wall of the healing abutment can form a linear section with no threads.

And an inclined outer wall contact support part which is in contact with the inclined inner wall formed on the inner wall of the fixture may be formed on one side of the outer wall of the healing abutment.

The final prosthesis abutment may be provided with a tool insertion groove for insertion of the tool.

In accordance with the present invention, the time and effort involved in making the final prosthetic abutment can be significantly reduced by adding portions that are compatible with the healing abutment and the final prosthetic abutment, Which can contribute to reducing the procedure time and cost of the procedure.

1 is a layout diagram between a fixture and a healing abutment in the prior art.
2 is a layout diagram of a fixture, a final prosthesis abutment, and an abutment screw in the prior art.
3 is a layout view of an interchangeable abutment of a dental implant according to an embodiment of the present invention.
Fig. 4 is a view showing a state in which a fixture is arranged in Fig. 3;
Fig. 5 is a layout diagram of a fixture, a healing abutment, and a cover screw.
Fig. 6 is a combined view of Fig. 5. Fig.
7 is a layout view of a fixture, a healing abutment, abutment screw, and a final prosthesis abutment.
FIGS. 8 to 10 are views showing steps of the coupling process of FIG. 7, respectively.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 3 is a layout diagram of an interchangeable abutment of a dental implant according to an embodiment of the present invention, FIG. 4 is a view of the fixture in FIG. 3, FIG. 5 is a view of a fixture, And FIG. 7 is a layout view of a fixture, a healing abutment, an abutment screw, and a final prosthesis abutment, and FIGS. 8 to 10 are views 7 in a stepwise manner.

Referring to these drawings, the interchangeable abutment of the dental implant according to the present embodiment includes a healing abutment 120 partially inserted and fixed into a fixture 110, and a healing abutment And may include a final prosthesis abutment 130 that is inserted into the butt 120 and the other end is exposed to the outside of the healing abutment 120.

Particularly, the interchangeable abutment of the dental implant according to the present embodiment is provided with a portion that is interchangeable with the healing abutment 120 and the final restorative abutment 130 so that the final restorative abutment 130 So that it is possible to remarkably reduce the time and effort required for manufacturing the display device.

Hereinafter, the concrete structure of the fixture 110, the healing abutment 120, and the final prosthetic rest 130 will be described, and an implant procedure using the fixture 110, the healing abutment 120, and the final prosthetic rest 130 will be described.

A cover screw 140 and an abutment screw 150 may be used in addition to the fixture 110, the healing abutment 120, and the final prosthesis abutment 130 in the implant procedure The cover screw 140 and the abutment screw 150 are described in the description of the healing abutment 120.

First, the fixture 110 is a kind of screw that is placed on the alveolar bone, and is inserted into the alveolar bone and becomes artificial root after fusion.

The fixture 110 may include a body portion 111 and a head portion 112 constituting an upper region of the body portion 111. [

For convenience, the main unit 111 and the head unit 112 are separately described. However, they may be formed as an integral screw structure made of titanium.

Screws 111a and 112a are formed on the outer surfaces of the main body 111 and the head 112 as means for screwing the alveolar bone into the alveolar bone.

In the drawings, pitch intervals of the threaded portions 111a and 112a formed on the outer surfaces of the main body 111 and the head 112 are different from each other. The pitch interval of the screw section 111a formed in the main body section 111 is formed to be larger than the pitch interval of the screw section 112a formed in the head section 112. [ This can be one of the ways to have a strong binding force in the initial setting.

However, since the scope of the present invention can not be limited to the shapes of the drawings, the pitch intervals of the threaded portions 111a and 112a formed on the outer surface of the main body 111 and the head 112 may be equal to each other .

The main body portion 111 and the head portion 112 may have a cylindrical shape having the same sectional area along the direction in which the fixture 110 is placed or may have a tapered shape with a larger sectional area toward the head portion 112 .

A cutting edge portion 116 is provided on the outer wall of the lower end portion of the main body portion 111 so as to facilitate initial setting. The cutting edge portion 116 is machined to have a sharp blade shape so that the fixture 110 can be easily positioned at a predetermined position.

The screw part 141a and the screw part 141a provided on one side of the shaft 141 of the cover screw 140 or the abutment screw 150 are screw- (111b) are formed.

As described above, the screw portion for screw fastening 111b is formed in the main body portion 111 and the screw portion for screw fastening 111b of the cover screw 140 or the abutment screw 150 is screwed through the screw fastening portion 111b The healing abutment 120 can be fixed to the fixture 110 as shown in FIGS. 6, 9, and 10 because it can be fastened.

An inclined inner wall 113 is formed on the inner wall of the head portion 112 of the fixture 110. The inclined inner wall 113 has an inclined surface that gradually decreases in width toward the cutting edge portion 116. The inclined outer wall contact support portion 126 of the healing abutment 120 is contactably supported on the inclined inner wall 113 .

A healing abutment 120 is a structure that is partially inserted and fixed into a fixture 110. A final prosthesis abutment 130 includes a healing abutment 120 having one side inserted into a healing abutment 120, And the other side is exposed to the outside of the healing abutment 120.

In the prior art, the healing abutment 120 is fixed to the fixture 110 by the abutment screw 150 although the healing abutment 20 (see FIG. 1) The final prosthesis abutment 130 is coupled to the healing abutment 120 and the final prosthesis abutment 130 exposed to the outside of the healing abutment 120 has a crown as an artificial tooth It has a form to be covered.

In such a configuration, the engagement portion where the healing abutment 120 and the final prosthesis abutment 130 are engaged is provided with a standard for engagement or disengagement of the healing abutment 120 and the final prosthesis abutment 130 The threaded portions 121 and 131 are formed.

The standard threaded portions 121 and 131 are provided on a standard female threaded portion 121 provided on the inner wall of the healing abutment 120 and on the outer wall of the final prosthetic rest 130, And may include a standard male thread portion 131.

Here, the standard thread portions 121 and 131 mean that they are applied to the screws of the internationally agreed standards in the International Organization for Standardization (ISO).

When the standard threaded portions 121 and 131 are formed at the joining portion of the healing abutment 120 and the final prosthetic rest 130 to be combined with each other by the mutual screwing method, when the final prosthesis abutment 130 is manufactured, Since the screw portion 131 can be easily manufactured, the time and effort required for manufacturing the final prosthetic rest 130 can be remarkably reduced as compared with the conventional art.

In other words, in the case of the prior art, as described above with reference to FIGS. 1 and 2, the process of tightening and removing the healing abutment 20 to fabricate the final prosthesis abutment 30 is repeated several times The structure of the healing abutment 20 or the coupling structure with the fixture 10 and the like are closely observed and the final prosthetic material abutment 30 must be manufactured so that the time required for manufacturing the final prosthetic material abutment 30 Efforts had to be increased.

However, in the case of the present embodiment, the final prosthetic abutment 130 is applied in a state of being coupled to the healing abutment 120, in particular the combination of the healing abutment 120 and the final prosthetic abutment 130 Since the standard threaded portions 121 and 131 are formed in the portion of the prosthesis 130, the process of manufacturing the final prosthesis abutment 130 becomes easier than before. That is, since the portion of the standard male screw portion 131 in the final prosthesis abutment 130 is standard, it can be easily manufactured using a standard mold or the like. As a result, the time and effort required for manufacturing the final prosthesis abutment 130 So that it can be remarkably reduced.

Hereinafter, the structure of the healing abutment 120 and the final prosthesis abutment 130 will be described in detail.

First, the healing abutment 120 is a structure that is fixed to the fixture 110 by the abutment screw 150 as shown in FIG.

In the healing abutment 120, a screw hole 122 through which the screws 140 and 150 are passed is formed as shown in detail in FIG.

Here, the screws 140 and 150 may be cover screws 140 that temporarily block the inside of the healing abutment 120 as shown in FIGS. 5 and 6, and healing abutments 140, 120 may be an abutment screw 150 that fixes the fixture 110 to the fixture 110. [

Both the cover screw 140 and the abutment screw 150 have a shaft 141 and 151 and a shaft 141 and 151, although the cover screw 140 and the abutment screw 150 have different shapes and uses. And heads (142,152) provided at the ends of the head (142,152).

At this time, the screws 141a and 151a are formed on only one side of the ends of the cover screw 140 and the shafts 141 and 151 of the abutment screw 150. The screw portions 141a and 151a can be screwed to the screw fastening portion 111b formed in the body portion 111 of the fixture 110. [

At this time, the shaft portions 141 and 151 of the cover screw 140 and the abutment screw 150 are formed with non-threaded sections 141b and 151b in which the threaded portions 141a and 151a are not formed. In the healing abutment 120, A shaft guide wall 123 for guiding the non-thread sections 141b and 151b formed on the shafts 141 and 151 of the screws 140 and 150 is formed. The shaft guide wall 123 may be a straight line.

The non-thread sections 141b and 151b formed on the shafts 141 and 151 of the screws 140 and 150 are guided by the shaft guide wall 123 formed on the inner wall of the healing abutment 120, The screw portions 141a and 151a are screwed to the screw fastening portion 111b formed in the body portion 111 of the fixture 110 so that stable engagement can be obtained.

A first head contact support 124 is formed on the inner wall of the healing abutment 120 to support the head 142 of the cover screw 140 as shown in FIGS.

The first head contact support part 124 may form an inclined surface that gradually narrows toward the fixture 110 side. At this time, the first head contact support 124 may be disposed adjacent to the final prosthesis abutment 130 side with respect to the standard female thread 121.

A second head contact support part 125 is formed on the inner wall of the healing abutment 120 to support the head 152 of the abutment screw 150.

The second head contact support 125 may be disposed on the opposite side of the first head contact support 124. That is, the second head contact support part 125 may be disposed adjacent to the fixture 110 side with respect to the standard female threaded part 121.

At this time, the section between the standard female thread 121 and the second head contact support 125 on the inner wall of the healing abutment 120 may form a straight section 127 having no threads.

An inclined outer wall contact support portion 126 is formed on one side of the outer wall of the healing abutment 120 to be contacted with an inclined inner wall 113 formed on the inner wall of the fixture 110. The inclined outer wall contact support portion 126 of the healing abutment 120 and the inclined inner wall 113 of the fixture 110 may be made to have the same inclination so as to be in surface contact with each other.

Next, the final prosthesis abutment 130 is a structure in which one side is inserted into the healing abutment 120 and the other side is exposed to the outside of the healing abutment 120 as shown in Figs. 7 to 10, It forms the place where crown is mounted.

As described above, in order to properly mount a crown as an artificial tooth, a final prosthesis abutment 130 must be manufactured and used according to individual characteristics of a patient. In the final prosthesis abutment 130 applied in the present embodiment, Since the standard male threaded portion 131 screwed to the standard female threaded portion 121 of the healing abutment 120 is formed, the final prosthetic rest 130 can be made much easier than before. That is, since the portion of the standard male screw portion 131 in the final prosthesis abutment 130 is standard, it can be easily manufactured using a standard mold or the like. As a result, the time and effort required for manufacturing the final prosthesis abutment 130 So that it can be remarkably reduced.

At the end of this final prosthesis abutment 130, a tool insertion groove 132 for insertion of a tool may be formed.

Hereinafter, an implant treatment process according to the present embodiment will be described.

First, after inserting the fixture 110 into the perforated portion after drilling, the drill is used to insert the fixture 110 into an alveolar bone. After the fixture 110 is placed, a fixture 110 is preformed for a predetermined time to allow bone fusion with bone cells of the alveolar bone.

Next, after the healing abutment 120 is coupled to the fixture 110 as shown in FIG. 6, the cover screw 140 blocks the screw hole 122 of the healing abutment 120. Then, the final prosthetic rest 130 is manufactured. In this case, it is not necessary to frequently insert and remove the healing abutment 120 as in the past.

The cover screw 140 is removed and the abutment screw 150 is tightened to fix the healing abutment 120 to the fixture 110 The final prosthesis abutment 130 may be fixedly coupled to the healing abutment 120 in a standard screw manner.

The implant may then be completed by placing a crown of the same shape as the natural tooth as a final prosthesis on the portion of the final prosthesis abutment 130 exposed to the outside of the healing abutment 120.

According to the present embodiment having the structure and function as described above, the final restoration abutment 130 is provided with a portion that is mutually compatible with the healing abutment 120 and the final restoration abutment 130, It is possible to remarkably reduce the time and effort involved in manufacturing and to contribute to the reduction of the procedure time and the operation cost of the implant.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

110: Fixture 111:
111a: screw part 111b: screw part for screw fastening
112: head portion 112a:
113: sloped inner wall 116: cutting edge portion
120: Healing abutment 121: Standard female thread part
122: screw passing hole 123: shaft guide wall
124: first head contact support 125: second head contact support
126: inclined outer wall contact support 130: final prosthesis abutment
131: standard male thread portion 132: tool insert groove
140: cover screw 141: shaft
141a: screw portion 142: head
150: abutment screw 151: shaft
151a: threaded portion 152: head

Claims

A healing abutment partially inserted and fixed into a fixture, a standard internal thread portion formed on one side of the inner wall, and a screw passing hole through which the screw passes; And
And a standard male screw portion capable of screwing or disengaging from the standard female screw portion. The standard male screw portion is inserted into the healing abutment through the standard male screw portion and the other is exposed to the outside of the healing abutment. &Lt; / RTI >
Wherein the screw is a cover screw for shielding the screw through hole or an abutment screw for fixing the healing abutment to the fixture,
The healing abutment includes:
A first head contact support part formed on one side of the standard female thread part and having a head of the cover screw held in contact; And
And a second head contact supporting part which is disposed on the other side of the first head contact supporting part with reference to the standard female thread part and on which the head of the abutment screw is contactably supported. Good abortion.

delete

The method according to claim 1,
Wherein a shaft guide wall is formed on an inner wall of the healing abutment to guide a non-threaded section of a shaft of the screw.

5. The method of claim 4,
Wherein the shaft guide wall forms a straight line. &Lt; Desc / Clms Page number 13 >

delete

The method according to claim 1,
Wherein the first head contact support portion forms an inclined surface that gradually narrows in width toward the fixture. &Lt; RTI ID = 0.0 > 11. < / RTI >

The method according to claim 1,
Wherein the first head contact support portion is disposed adjacent to the final prosthesis abutment with reference to the standard female thread portion. &Lt; RTI ID = 0.0 > 18. < / RTI >

delete

The method according to claim 1,
Wherein the second head contact support portion is disposed adjacent to the fixture side with reference to the standard female thread portion.

The method according to claim 1,
Wherein a section between the standard female threaded portion and the second headed contact support on the inner wall of the healing abutment forms a straight section without threads. &Lt; Desc / Clms Page number 13 >

The method according to claim 1,
Wherein an inclined outer wall contact support portion is formed at one side of an outer wall of the healing abutment and is supported by an inclined inner wall formed on an inner wall of the fixture.

The method according to claim 1,
Wherein the final prosthesis abutment is formed with a tool insertion groove for insertion of a tool.