KR102062575B1 - Abutment and implant including the same - Google Patents

Abstract

According to embodiments of the present invention, an abutment for an implant comprises a lower portion coupled to a fixture implanted on the bone tissue and an upper portion to which a prosthesis is bonded by a binding agent. The abutment for an implant includes: a connection portion inserted into the fixture and including a rotation preventing portion which faces the fixture; a gingiva contact portion extending upwardly from the connection portion and being in contact with the gingiva; a post coupled to an inner surface of the prosthesis and including a prosthesis rotation preventing portion which faces the prosthesis; and a prosthesis support portion provided between the gingiva contact portion and the post, extending in a direction in which an outer diameter is reduced from the gingiva contact portion towards the post, and configured to support the inner surface of the prosthesis, wherein a round portion formed in a round shape corresponding to that of an upper end of the inner surface of the prosthesis is formed on an upper end of the post. According to the present invention, it is possible to prevent the abutment from protruding upwardly from the gingiva.

Description

Abutment and implant including the same}

Embodiments of the present invention relate to abutments and implants comprising the same.

Dental implants are prosthetic devices embedded in oral tissues such as bone tissue for holding and supporting prostheses, and are configured to replace the roots of missing teeth. In detail, the implant functions to restore the natural function of the teeth by connecting the artificial teeth after fusion of the artificial root made of titanium, etc. in the alveolar bone without rejection in the human body. The implant may include a fixture fixed to the alveolar bone, abutment coupled to an upper portion of the fixture and a fastening screw securing the abutment to the fixture.

1 is a schematic view showing a conventional implant configuration.

Referring to FIG. 1, a conventional implant includes a fixture 2 that is implanted in a jawbone (bone tissue) B and serves as a tooth root of an artificial tooth and a support column 5 that is coupled to the fixture 2. The abutment 5 may be screwed to the upper portion of the fixture 2.

The implant further includes a prosthesis 3 coupled to the upper side of the abutment 5 and having a tooth shape. The prosthesis 3 may be supported by the abutment 5 and fixed to the upper side of the gum G.

The abutment 5 is coupled to the fixture 2 and extends upwards. In detail, the abutment 5 has a connection part 6 inserted into and coupled to the inside of the fixture 2, and a gum extending from an upper end of the connection part 6 and extending from the upper end of the fixture 2. A gum contact 7 extending to a position adjacent to the upper end of (G) and a post 8 extending upward from the gum contact 7 and coupled to the prosthesis 3 are included.

The gum contact portion 7 contacts the gum G so that the prosthesis 3 can be stably positioned above the gum G. Therefore, the vertical height Ho of the gum contact portion 7 needs to be designed to suit the user.

However, the shape and height of the gum G vary depending on the user, and when the height of the user's gum is low, the upper end of the gum contact part 7 may protrude to the upper side of the gum G and be exposed to the outside. Thus, when the prosthesis 3 is coupled to the abutment 5, the prosthesis 3 is spaced apart from the upper side of the gum G, resulting in a decrease in the aesthetics of the implant.

On the other hand, in recent years, the actual scan of the abutment (5) is stored as data on a computer, etc., and the system is configured so that the real abutment and the abutment stored as data in the implant procedure to contribute to the accuracy and convenience of the procedure.

As described above, when the upper end portion of the gum contact portion 7 protrudes above the gum G to reduce the height Ho of the gum contact portion 7, the abutment column and the abutment stored as data are Inconsistencies may result in problems that render the system unusable.

[Prior literature]

1. Patent Number (Registration Date): 10-1535294 (July 2, 2015)

2. Name of invention: Digital healing renter

The present invention has been proposed to solve the above problems, it is possible to manufacture a custom abutment by designing a low height of the gum contact portion provided in the abutment, abutment that can prevent the abutment protruding to the upper side of the gum and It is an object to provide an implant comprising the same.

In addition, a groove is formed between the abutment gum contact portion and the post, and a binder for prosthesis adhesion can be located in the groove, thereby increasing the bond between the abutment and the prosthesis and preventing the binder from leaking out of the prosthesis. It is an object of the present invention to provide abutment holders and implants including the same.

In addition, by forming a rounded portion extending roundly on the post peripheral surface of the abutment to prevent the occurrence of interference between the abutment and the prosthesis when joining the prosthesis to the abutment, the thickness of the adhesive layer existing between the inner surface of the abutment and the abutment is uniform. It is an object of the present invention to provide abutments and implants containing the same.

And, by forming the round portion, due to the existence of a corner portion that is difficult to cut when processing the inner surface of the prosthesis with a ball end mill in the past, it is possible to solve the problem of having a larger tolerance between the upper end of the abutment and the upper portion of the inner surface of the prosthesis. It is an object of the present invention to provide an abutment and an implant comprising the same.

In addition, an abutment and an implant including the abutment including a rounded upper portion having a predetermined radius of curvature between the post of the abutment and the gum contact portion can uniformly bring the thickness of the adhesive layer existing between the inner surface of the prosthesis and the abutment. The purpose is to provide.

In the implant abutment according to an embodiment of the present invention, in the implant abutment having a lower portion coupled to a fixture placed in bone tissue and an upper portion to which a prosthesis is joined by a bonding agent, the implant is inserted into the fixture. A connection portion having an anti-rotation portion facing the congestion; A gum contact portion extending upward from the connection portion and contacting the gum; A post coupled to the inner surface of the prosthesis and having a prosthesis anti-rotation portion facing the prosthesis; And a prosthesis support portion provided between the gum contact portion and the post, extending in a direction in which an outer diameter decreases from the gum contact portion toward the post, and supporting an inner surface of the prosthesis, wherein the upper end portion of the post includes: The round part is formed to be round in a shape corresponding to the upper end of the inner surface of the prosthesis.

The post includes a cylindrical post body; And a first round part provided at both sides of the prosthesis anti-rotation part and extending roundly from both side ends of the prosthetic anti-rotation part toward the post body, and the round part may constitute a second round part.

The through hole recessed from the upper end of the post is inserted into the fastening screw is further included, the round portion may be configured to have a ring shape around the through hole.

The gum contact portion includes: a contact body extending upward from the connection portion and configured to increase an outer diameter toward the upper portion; And an interface forming an upper end of the contact body and forming a boundary with the prosthetic support.

The outer diameter of the interface may be larger than the outer diameter of the prosthesis support portion.

The groove is provided between the prosthesis support portion and the post, and is formed by being recessed at an upper end of the prosthesis support portion.

The outer diameter of the groove may be smaller than the outer diameter of the upper end of the prosthesis support portion and smaller than the outer diameter of the lower end of the connection portion.

The radius of curvature of the first round part or the radius of curvature of the second round part may be formed in a range of 0.2 mm to 1.0 mm.

The prosthesis support portion extends rounded, the radius of curvature of the prosthesis support portion may be formed in the range of 0.2 ~ 1.0mm.

The center line ℓ2 of the post extends obliquely in the horizontal direction by the set angle θ1 with respect to the upper and lower center lines ℓ1 of the connection portion, and the set angle θ1 may be formed in a range of 15 to 30 °. .

According to another aspect of the implant, the fixture is placed in bone tissue; Abutment inserted into the fixture and having a gum contact; A prosthesis having an inner surface coupled to the upper portion of the rent column; And a bonding layer provided between an outer surface of the abutment and an inner surface of the prosthesis, the bonding layer formed by a bonding agent, wherein the abutment extends upward from the gum contact portion and extends round to reduce an outer diameter toward the top. Prosthesis support portion; A post provided on an upper side of the prosthetic support and having an outer surface joined to an inner surface of the prosthesis; And a groove formed in the recess between the prosthesis support part and the post, and the bonding layer may be formed in the groove.

The post includes a post body having an outer circumferential surface; A post rotation preventing portion recessed from the post body and configured to face; And a first round part extending round from the end of the post anti-rotation part to the post body.

A second round part extending roundly on an upper end of the post body may be further included, and the radius of curvature of the first round part and the radius of curvature of the second round part may be the same.

The prosthesis support portion may extend round upward from an upper end of the gum contact portion, and the radius of curvature of the prosthesis support portion may be the same as the radius of curvature of the first and second round portions.

According to the above solution, by designing a low height of the gum contact portion provided in the abutment it is possible to manufacture a customized abutment, it is possible to prevent the abutment protruding to the upper side of the gum.

In addition, a groove is formed between the abutment gum contact portion and the post, and a binder for prosthesis adhesion can be located in the groove, thereby increasing the bond between the abutment and the prosthesis and preventing the binder from leaking out of the prosthesis. Can be.

In addition, by forming a rounded portion extending roundly on the post peripheral surface of the abutment to prevent the occurrence of interference between the abutment and the prosthesis when joining the prosthesis to the abutment, the thickness of the adhesive layer existing between the inner surface of the abutment and the abutment is uniform. I can take it.

And, by forming the round portion, due to the existence of a corner portion that is difficult to cut when processing the inner surface of the prosthesis with a ball end mill in the past, it is possible to solve the problem of having a larger tolerance between the upper end of the abutment and the upper portion of the inner surface of the prosthesis. .

In addition, a rounded upper portion having a predetermined radius of curvature is provided between the abutment post and the gum contact portion to uniformly bring the thickness of the adhesive layer existing between the inner surface of the prosthesis and the inner surface of the abutment.

1 is a schematic view showing a conventional implant configuration.
Figure 2 is a schematic diagram showing the configuration of the implant according to the first embodiment of the present invention.
Figure 3 is a perspective view showing a combination of the fixture and abutment according to the first embodiment of the present invention.
Figure 4 is a front view showing a combination of the fixture and abutment according to the first embodiment of the present invention.
5 is a cross-sectional view taken along the line 5-5 ′ of FIG. 3.
6 is a perspective view showing the configuration of the rent column according to the first embodiment of the present invention.
7 is a front view showing the configuration of the rent column according to the first embodiment of the present invention.
FIG. 8 is a cross-sectional view taken along line 8-8 'of FIG. 6.
9 is an exploded perspective view of the abutment and the prosthesis according to the first embodiment of the present invention.
FIG. 10 is a cross-sectional view illustrating a coupling view of the abutment and the prosthesis according to the first embodiment of the present invention. FIG.
Figure 11a is a view showing a conventional abutment coupled to the inner surface of the prosthesis.
11B is a view showing a state in which the abutment according to the first embodiment of the present invention is coupled to the inner surface of the prosthesis.
12A to 12C are views showing various implant parts coupled to the abutment according to the first embodiment of the present invention.
13 is a perspective view showing the configuration of the rent column according to the second embodiment of the present invention.
14 is a front view showing the configuration of the rent column according to the second embodiment of the present invention.
15 is a cross-sectional view taken along line 15-15 'of FIG.
16 is a view showing a state in which the abutment according to the second embodiment of the present invention is coupled to the inner surface of the prosthesis.
17 is a perspective view showing the configuration of the rent column according to the third embodiment of the present invention.
18 is a front view showing the structure of the rent column according to the third embodiment of the present invention.
19 is a cross-sectional view taken along line 19-19 'of FIG. 17.
20 is a perspective view showing the configuration of the rent column according to the fourth embodiment of the present invention.
21 is a front view showing the structure of the rent column according to the fourth embodiment of the present invention.
FIG. 22 is a cross-sectional view taken along line 22-22 'of FIG. 20.
Fig. 23 is a perspective view showing the abutment structure according to the fifth embodiment of the present invention.
24 is a front view showing the structure of the rent column according to the fifth embodiment of the present invention.
25 is a cross-sectional view taken along line 25-25 'of FIG. 23.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related well-known configuration or function interferes with the understanding of the embodiments of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but there is another component between each component. It will be understood that may be "connected", "coupled" or "connected".

Figure 2 is a schematic view showing the configuration of the implant according to the first embodiment of the present invention, Figure 3 is a perspective view showing the coupling of the fixture and abutment according to the first embodiment of the present invention, Figure 4 is a view of the present invention FIG. 5 is a front view illustrating a coupling form of a fixture and abutment according to the first embodiment, and FIG. 5 is a cross-sectional view taken along the line 5-5 ′ of FIG. 3.

2 to 5, the implant according to the first embodiment of the present invention, the fixture 50 is placed in the bone tissue (B), the abutment 100 is coupled to the upper side of the fixture 50 And a fastening screw 60 for coupling the abutment 100 to the fixture 50.

The fixture 50 includes a screw thread 55 that is implanted in bone tissue. The thread 55 is formed to protrude from the outer peripheral surface of the body of the fixing body 20.

The abutment 100 may be positioned so as not to protrude upward of the gum G of the patient. In detail, the abutment 100, the connection portion 110 is inserted into and coupled to the interior of the fixture 50, and extends above the connection portion 110 and gums from the upper end of the fixture 50 (G) includes a gum contact portion 120 extending to a position adjacent to the upper end portion and a post 130 extending upward from the gum contact portion 120 is coupled to the prosthesis (3).

The height H1 of the gum contact portion 120 may be formed to be relatively small so that the upper end portion of the gum contact portion 120 does not protrude above the upper end portion of the gum G. The height H1 of the gum contact part 120 may be smaller than the height Ho of the abutment 5 described with reference to FIG. 1.

By this configuration, even if the height of the gum (G) of the patient is low, while the abutment 100 is coupled to the fixture 50, the gum contact portion 120 is located below the upper end of the gum (G) The lower end of the prosthesis 3 may be below the upper end of the gum G, thereby improving the aesthetics of the implant without being exposed to the abutment 100.

The post 130 includes a post body 131 having an outer surface coupled to an inner surface of the prosthesis 3 and having a substantially hollow cylindrical shape. The post body 131 may be configured such that its outer diameter increases from the upper end to the lower end. The post main body 131 is formed with a through hole 137 penetrating in the vertical direction to which the fastening screw 60 is coupled.

The through hole 137 is formed to penetrate from the upper end to the lower end of the abutment 100. In addition, the abutment 100 may be provided with a screw head seating portion 128 configured to be stepped inside the through hole 137 to support the head of the fastening screw 60. A thread is formed on an outer surface of the fastening screw 60, and the thread of the fastening screw 60 may be screwed to a thread provided on the inner circumferential surface of the fixing body 50.

The post 130 includes a post rotation preventing part 133 having a shape recessed from an outer circumferential surface of the post body 131. The post anti-rotation part 133 constitutes a facing and performs a function of preventing rotation when the prosthesis 3 is coupled.

The post 130 includes a first round part 135 extending round from an end of both sides of the post rotation preventing part 133 toward the outer circumferential surface of the post body 131.

When the prosthesis 3 is coupled to the outside of the post 130, the first round part 135 performs a function of improving suitability of the outer circumferential surface of the post 130 and the inner surface of the prosthesis 3. That is, by the first round part 135, sharp edges may be removed from both sides of the post rotation preventing part 133, thereby preventing interference between the post 130 and the prosthesis 3. In addition, the adhesive layer between the post 130 and the prosthesis 3 may be uniformly formed.

The first round part 135 may be provided in plural on both sides of the post rotation preventing part 133.

The post 130 includes a second round portion 138 extending round from the upper end of the body portion 131 downward. The second round part 138 is configured to have a ring shape on the post body 131 and is disposed to surround the through hole 137.

Like the first round part 135, the second round part 138 functions to improve the outer circumferential surface of the post 130 and the inner surface suitability of the prosthesis 3. That is, by the second round part 138, a sharp edge can be removed from the upper end of the post 130 to prevent the interference between the post 130 and the prosthesis 3, and the post The adhesive layer between the 130 and the prosthesis 3 may be uniformly formed.

In the lower portion of the post 130, a groove 140 recessed from the outer circumferential surface of the post 130 is formed. The groove 140 may be understood to be formed between the lower end of the post body 131 and the gum contact portion 120.

The groove 140 provides a space in which a binder for bonding the abutment 100 and the prosthesis 3 may be located. Therefore, a relatively large number of binders are positioned in the groove 140 to increase the bonding force, and the remaining binder may be prevented from leaking out of the prosthesis 3. For example, the binder may include resin cement.

FIG. 6 is a perspective view showing the abutment according to the first embodiment of the present invention, FIG. 7 is a front view showing the abutment according to the first embodiment of the present invention, and FIG. 8 is 8-8 'of FIG. Sectional section cut along the.

6 to 8, the abutment 100 according to the first embodiment of the present invention includes a connection portion 110 provided below the abutment 100 and positioned on an inner circumferential surface of the fixture 50. Included. The connection unit 110 includes a connection body 112 configured to increase its outer diameter toward the upper portion.

The connection part 110 is provided below the connection main body 112, and is provided with a rotation preventing part 114 corresponding to at least a portion of an inner circumferential surface (abutment coupling surface) of the fixing body 50. The anti-rotation part 114 may have a shape of a multi-faced surface as an example so that the abutment 100 does not run against the fixture 50. The outer diameter of the anti-rotation part 114 may be smaller than the outer diameter of the connection body 112.

The abutment coupling surface of the fixture 50 includes a shape of a polygonal surface corresponding to the rotation preventing portion 147. For example, at least a portion of the inner surfaces of the anti-rotation part 114 and the fixing body 50 may have a hexagonal shape.

The abutment 100 further includes a gum contact part 120 disposed above the connection part 110 and positioned inside the gum G. The gum contact part 120 includes a contact body 121 extending upward from an upper end of the connection part 110 and configured to increase an outer diameter toward an upward direction.

The gum contact part 120 includes an interface 125 that forms an upper end of the contact body 121 and forms a boundary with the prosthesis support part 160. The contact body 121 may extend roundly from the upper end of the connection unit 110 to the interface 125 so that the outer diameter becomes larger. Accordingly, it may be understood that the outer diameter H4 of the interface 125 is larger than the outer diameter H3 of the upper end of the connection unit 110 and has a maximum value of the outer diameter of the contact body 121.

The prosthesis support portion 160 extends upward from the interface 125 and may be configured such that its outer diameter gradually decreases upward. The prosthesis support unit 160 may have a support surface on which the lower portion of the prosthesis 3 is supported. In addition, the support surface extends rounded, and the radius of curvature of the prosthesis support portion 160 may be the same as the radius of curvature of the second round portion 138.

In the abutment 100, a groove 140 recessed from an upper end of the prosthesis support part 160 may be formed. The outer diameter H2 of the groove 140 may be smaller than the outer diameter of the upper end of the prosthesis support part 160 and smaller than the outer diameter of the lower end of the connection part 130. The groove 140 may contain a binder for bonding the prosthesis 3 and the abutment 100.

The abutment 100 further includes a post 130 extending upward from the groove 140 and coupled to an inner surface of the prosthesis 3. The post 130 includes a post-cylinder post body 131 of which a diameter becomes smaller toward the upper side, and a post-rotation preventing part 133 of a face formed of a shape in which part of an outer surface of the post body 131 is cut out. And a first round part 135 provided at both sides of the post anti-rotation part 133 and connecting both ends of the post anti-rotation part 133 and the post body 131.

The post 130 further includes a second round part 138 extending round from the upper end of the post body 131 downward. The first and second round parts 135 and 138 may prevent interference between the prosthesis 3 and the abutment 100, and may facilitate surface coupling between the prosthesis 3 and the abutment 100 by a bonding agent. do.

9 is an exploded perspective view of the abutment and the prosthesis according to the first embodiment of the present invention, Figure 10 is a cross-sectional view showing a combination of the abutment and the prosthesis according to the first embodiment of the present invention, Figure 11a is a conventional abutment Figure 11b is a view showing a state coupled to the inner surface of the prosthesis, Figure 11b is a view showing a state in which the abutment according to the first embodiment of the present invention is coupled to the inner surface of the prosthesis.

9 and 10, the post 130 of the abutment 100 according to the first embodiment of the present invention may be bonded to the inner surface 3a of the prosthesis 3 by a bonding agent.

The second round part 138 provided at the upper end of the post 130 may be rounded to have a predetermined radius of curvature R1. The second round part 138 may be configured to have a shape corresponding to an upper end of the inner surface 3a.

The inner surface 3a may be machined by a predetermined processing tool, for example a ball end mill. According to the diameter of the ball provided in the ball end mill, the upper end of the inner surface (3a) may be formed round. Correspondingly, the second round portion 138 is configured to have the radius of curvature R1, so that the upper end of the post 130 and the upper end of the inner surface 3a may be located closer than before. have.

In one example, the radius of curvature R1 may be formed in the range of 0.2 ~ 1.0mm in consideration of the diameter (Φ) of the ball end mill. The radius of curvature of the first round part 135 may also be formed in the range of .2 to 1.0 mm. The radius of curvature of the first round part 135 may have the same value as the radius of curvature R1 of the second round part 138.

In detail, referring to FIG. 11A, the conventional abutment structure, that is, the upper end portion T of the post 8 constitutes a sharp edge without being rounded, and the inner surface of the prosthesis 3 by the ball end mill M ( 3a) When the upper end portion is rounded, the upper end portion T of the post 8 and the upper end portion of the inner surface 3a do not cause interference, so that the upper end portion T of the post 8 and the inner surface ( The upper end of 3a) needed to form a relatively large first separation distance S1.

According to such a structure, it is necessary to deepen the inner surface processing of the prosthesis 3, and there exists a possibility that the strength of the prosthesis 3 may become weak. In addition, the amount of the binder is further required as corresponding to the first separation distance S1, and when the amount of the binder is not sufficient, there is a problem in that the bonding strength is lowered.

On the other hand, referring to Figure 11b, in the case of the abutment 100 according to the first embodiment of the present invention, a second round portion 138 is formed on the upper end of the post 130 and the second round portion 138 The radius of curvature of may correspond to the radius of curvature of the upper end of the inner surface (3a) is processed by the ball end mill (M).

According to this structure, there is less possibility that interference occurs between the prosthesis 3 and the abutment 100. Therefore, it is not necessary to deepen the inner surface processing of the prosthesis 3, and it becomes possible to form a relatively small second separation distance S2 of the upper end of the post 130 and the upper end of the inner surface 3a. The second separation distance S2 may be smaller than the first separation distance S1. Therefore, the amount of the binder is required to be small as corresponding to the second separation distance S2, and even if the amount of the binder is not sufficient, it is possible to prevent the phenomenon that the bonding strength is lowered.

The outer surface of the post 130 and the inner surface 3a of the prosthesis 3 may be joined by a bonding agent. That is, a bonding layer by the bonding agent may be formed between the outer surface of the post 130 and the inner surface 3a of the prosthesis 3. The bonding agent is provided on the inner surface 3a of the prosthesis 3, and when the prosthesis 3 is bonded to the abutment 100, the bonding agent hardens to form the bonding layer.

The bonding layer has a first bonding layer C1 provided between the outer surface of the post body 131 and the inner surface 3a, and a second bonding provided between the groove 140 and the inner surface 3a. Layer C2 is included. The thickness of the first bonding layer C1 may be uniformly formed over the entire outer surface of the post body 131 by the configuration of the first and second round parts 135 and 138.

The second bonding layer C2 may be provided inside the groove 140, and may be configured to have a thickness greater than the thickness of the first bonding layer C1. Therefore, the bonding strength by the second bonding layer (C2) can be improved, and the bonding agent remaining in the bonding process can be accommodated in the groove 140, so that the remaining bonding agent is abutment 100 and the prosthesis (3) To prevent it from leaking out of the

12A to 12C are views showing various implant parts coupled to the abutment according to the first embodiment of the present invention.

FIG. 12A shows the impression coping A coupled to the abutment 100, and FIG. 12B shows the protection cap B coupled to the abutment 100. And, Figure 12c shows a temporary tooth (C) is coupled to the abutment (100).

The impression coping A is understood as a member that is coupled in the oral cavity in the process of imitating a model of the oral cavity, that is, in the process of taking an impression. In addition, the temporary tooth (C) may be a prosthesis provided during fabrication of the final prosthesis in the oral cavity.

As described above, the groove 140 is formed in the abutment 100, so that the parts A, B, and C may be firmly coupled to the grooves 140.

Hereinafter, other embodiments of the present invention will be described. Since these embodiments differ only in some configurations compared with the first embodiment, the description of the first embodiment and the reference numerals are used for the same parts as the first embodiment.

FIG. 13 is a perspective view showing the abutment according to the second embodiment of the present invention, FIG. 14 is a front view showing the abutment according to the second embodiment of the present invention, and FIG. 15 is 15-15 'of FIG. Figure 16 is a cross-sectional view taken along, Figure 16 is a view showing a state in which the abutment according to the second embodiment of the present invention is coupled to the inner surface of the prosthesis.

13 to 16, the abutment 100a according to the second embodiment of the present invention includes a connection part 110 and a prosthesis 3 including a connection body 112 and an anti-rotation part 114. It is coupled to the inside of the post body 131, the post anti-rotation portion 133 and the first and second round portion (135, 138) includes a post 130 is included. The abutment 100a is formed with a through hole 137 through which the fastening screw 60 is inserted through the upper end portion to the lower end portion thereof.

The abutment 100a extends upward from the gum adhesion part 120a and the gum adhesion part 120a provided between the connection part 110 and the post 130, and is connected to the post 130. Prosthesis support portion 160a for supporting the prosthesis 3 is included.

The gum adhesion part 120a includes a contact body 121 extending upward from an upper end of the connection part 110 and configured to increase an outer diameter, and an interface 125 forming an upper end of the contact body 121. do.

The prosthesis support portion 160a extends upward from the interface 125 and is configured to be connected to the post 130. The outer diameter of the prosthesis support portion 160a may be configured to decrease upward.

Compared to the abutment 100 of the first embodiment, the abutment 100a according to the present embodiment has a groove 140 removed from the abutment 100, and the prosthesis support portion 160a has a post 130 from the interface 125. It can be understood that it is configured to extend to the lower end of the).

The prosthesis support portion 160a may be configured to have a predetermined radius of curvature R2 so that the inner surface 3a of the prosthesis 3 can be stably supported. In detail, the radius of curvature R2 may be determined to be a value such that the bonding layers C3 and C4 having a uniform thickness may be formed between the outer surface of the abutment 100a and the outer surface of the prosthesis 3. In one example, the radius of curvature R2 may be formed in the range of 0.2 ~ 1.0mm.

That is, the radius of curvature R2 of the prosthesis support portion 160a may be the same as the radius of curvature R1 of the second round portion 138.

Referring to FIG. 16, the bonding layers C3 and C4 may include a first bonding layer C3 and the prosthetic support 160a provided between the outer surface of the post 130 and the inner surface 3a of the prosthesis 3. The second bonding layer C4 provided between the inner surface 3a of the prosthesis 3 is included.

The thickness of the first bonding layer C3 and the thickness of the second bonding layer C4 may be the same. This is because the rounded shape of the prosthesis support part 160a corresponds to the rounded shape of the inner surface 3a of the prosthesis 3, so that the distance between the prosthetic support part 160a and the inner surface 3a is spaced apart. This is because it is formed equal to the spaced distance between the outer surface of the post 130 and the inner surface 3a.

According to this configuration, since the bonding force of the abutment 100a and the prosthesis 3 is formed equally over the entire bonding layers C3 and C4, the abutment 100a and the prosthesis 3 can be firmly coupled.

FIG. 17 is a perspective view showing the abutment according to the third embodiment of the present invention, FIG. 18 is a front view showing the abutment according to the third embodiment of the present invention, and FIG. 19 is a view taken along line 19-19 'of FIG. It is a cross-sectional view cut along.

17 to 19, the abutment 100b according to the third embodiment of the present invention includes a connection part 110 and a prosthesis 3 including a connection body 112 and an anti-rotation part 114. A post 130 coupled to the inside of the post body 131, the post rotation preventing part 133, and the second round part 138 are included. The abutment 100a is formed with a through hole 137 through which the fastening screw 60 is inserted through the upper end portion to the lower end portion thereof.

The abutment 100b extends upward from the gum adhesion part 120a and the gum adhesion part 120a provided between the connection part 110 and the post 130, and is connected to the post 130. Prosthesis support portion 160a for supporting the prosthesis 3 is included.

The gum adhesion part 120a includes a contact body 121 extending upward from an upper end of the connection part 110 and configured to increase an outer diameter, and an interface 125 forming an upper end of the contact body 121. do.

The prosthesis support portion 160a extends upward from the interface 125 and is configured to be connected to the post 130. The outer diameter of the prosthesis support portion 160a may be configured to decrease upward.

Compared to the abutment 100a of the second embodiment, the abutment 100b according to the present embodiment may be understood to be deleted from the first round part 135 in the abutment 100a. Since the structure of the other abutment 100b is the same as that of the abutment 100a according to the second embodiment, the description of the first and second embodiments and the reference numerals are used for the same configuration.

FIG. 20 is a perspective view showing the abutment according to the fourth embodiment of the present invention, FIG. 21 is a front view showing the abutment according to the fourth embodiment of the present invention, and FIG. 22 is a 22-22 'of FIG. It is a cross-sectional view cut along.

20 to 22, the abutment 200 according to the fourth embodiment of the present invention, the upper portion may be configured to be inclined in the left and right direction based on the vertical center line.

In detail, the abutment 200 includes a connection part 210 including a connection main body 212 and an anti-rotation part 214, and a post main body 231 and a second round part coupled to an inner side of the prosthesis 3. Included is a post 230 provided with 238. The abutment 200 is formed with a through hole 237 through which the fastening screw 60 is inserted through the upper end portion to the lower end portion thereof.

Since the configuration of the connection unit 210 is the same as the configuration of the connection unit 110 of the first embodiment, the description thereof is used for the description of the first embodiment.

The center line ℓ2 of the post 230 may extend inclined in the left and right directions by a set angle θ1 based on the upper and lower centerlines ℓ1 of the connection portion 210. The set angle θ1 may be formed in the range of 10 to 30 °. The post body 231 may be configured to have an inclined cylindrical shape.

The anti-rotation part 133 is recessed from the outer surface of the post body 231 to form a face and is disposed to correspond to the inner surface of the prosthesis 3 so that when the abutment 200 and the prosthesis 3 are combined, Can prevent the phenomenon.

The second round part 238 extends rounded downward from the upper end of the post body 231 to improve the bonding property with the prosthesis 3. The description of the second round part 238 uses the description of the second round part 138 of the first embodiment.

An upper portion of the connection portion 210 includes a gum contact portion 220 provided with a contact body 221 and a prosthesis support portion 260 extending upward from the gum adhesion portion 220 to support the prosthesis 3. . The contact body 221 extends upward from an upper end of the connection part 110 and is configured to increase an outer diameter toward an upward direction, and an interface 225 is formed at an upper end of the contact body 121.

The prosthesis support portion 260 may extend upward from the interface 225 and its outer diameter may be configured to decrease upward.

The abutment 200 includes a recess 240 formed in an upper side of the prosthesis support part 260. A space for accommodating the adhesive may be formed in the groove 240, and various parts of the implant may be caught in the groove 240. For the description of the groove 240, the description of the groove 140 of the first embodiment is used.

FIG. 23 is a perspective view showing the abutment according to the fifth embodiment of the present invention, FIG. 24 is a front view showing the abutment according to the fifth embodiment of the present invention, and FIG. 25 is 25-25 'of FIG. It is a cross-sectional view cut along.

23 to 25, the abutment 200a according to the fifth embodiment of the present invention includes a connection portion 210 and a prosthesis 3 including a connection body 212 and an anti-rotation portion 214. A post 230 coupled to the inside of the post body 231 and the second round part 238 is provided. The abutment 200a is formed with a through hole 237 through which the fastening screw 60 is inserted, penetrating from an upper end portion to a lower end portion thereof.

The abutment 200a extends upward from the gum adhesion part 220a and the gum adhesion part 220a provided between the connection part 210 and the post 230, and is connected to the post 230. Prosthesis support portion 260a for supporting the prosthesis 3 is included.

The gum adhesion part 220a includes a contact body 221 extending upward from an upper end of the connection part 210 and configured to increase an outer diameter and an interface 225 forming an upper end of the contact body 221. do.

The prosthetic support 260a extends upward from the interface 125 and is configured to be connected to the post 130. The outer diameter of the prosthesis support portion 260a may be configured to decrease upward.

Compared to the abutment 200 of the fourth embodiment, the abutment 200a according to the present embodiment has the groove 240 removed from the abutment 200 and the prosthesis support portion 260a has a post 230 from the interface 225. It can be understood that it is configured to extend to the lower end of the).

As described in the second embodiment, the prosthetic support 260a may be configured to have a predetermined radius of curvature R2 so that the inner surface 3a of the prosthesis 3 can be stably supported. In detail, the radius of curvature R2 may be determined to a value such that a bonding layer having a uniform thickness may be formed between the outer surface of the abutment 200a and the outer surface of the prosthesis 3. In one example, the radius of curvature R2 may be formed in the range of 0.2 ~ 1.0mm.

As in the fourth embodiment, the center line ℓ2 of the post 230 may extend inclined in the horizontal direction by the set angle θ1 based on the upper and lower centerlines ℓ1 of the connection portion 210. As noted above, the main features of the invention may be applied in various embodiments.

3: prosthesis 3a: inner surface
50: fixture 55: thread
100: abutment 110: connection portion
120: gum contact 130: post
140: post 160: prosthesis support

Claims (14)

In the implant abutment having a lower portion coupled to the fixture placed in the bone tissue and the upper portion to which the prosthesis is joined by a bonding agent,
A connection portion inserted into the fixture and having a rotation preventing portion facing the fixture;
A gum contact portion extending upward from the connection portion and contacting the gum;
A post coupled to the inner surface of the prosthesis; And
A prosthesis support portion provided between the gum contact portion and the post, the prosthesis support portion having a support surface extending round from the gum contact portion toward the post by a first radius of curvature to support the inner surface of the prosthesis; ,
In the post,
A cylindrical post body;
A post anti-rotation part configured to face away from the outer circumferential surface of the post body and prevent rotation of the prosthesis;
A plurality of first round parts provided at both sides of the post anti-rotation part and extending round from the both side ends of the post anti-rotation part toward the outer circumferential surface of the post main body at a second radius of curvature; And
It is formed on the upper end of the post body, and includes a second round portion rounded to a third radius of curvature corresponding to the shape of the upper surface of the inner surface of the prosthesis,
The plurality of first round portions have a radius of curvature different from the radius of curvature of the post body to bend about an end of the post body to form a curved surface in the circumferential direction,
The first radius of curvature formed by the support surface of the prosthesis support portion is formed in the range of 0.2 ~ 1.0mm,
An implant abutment formed in the same manner as the second radius of curvature of the first round portion and the third radius of curvature of the second round portion. delete The method of claim 1,
The through hole is further recessed from the upper end of the post is inserted into the fastening screw,
The abutment column for the implant is configured to have a ring shape around the through hole. The method of claim 1,
The gum contact portion,
A contact body extending upward from the connection portion and configured to increase an outer diameter toward the upper portion; And
An implant abutment forming an upper end of the contact body, the interface forming a boundary with the prosthesis support. The method of claim 4, wherein
The outer column of the interface is implant abutment formed larger than the outer diameter of the prosthesis support. The method of claim 1,
It is provided between the prosthesis support and the post,
Implant abutment further comprises a recess formed in the upper end of the prosthesis support portion. The method of claim 6,
The outer diameter of the groove is less than the outer diameter of the upper end of the prosthesis support portion, the implant abutment is formed smaller than the outer diameter of the lower end of the connection portion. delete delete The method of claim 1,
The center line ℓ2 of the post is inclined in the horizontal direction by a set angle θ1 with respect to the upper and lower center lines ℓ1 of the connection part.
The set angle (θ1) is an implant abutment formed in the range of 10 ~ 30 °. Fixation implanted in bone tissue;
Abutment inserted into the fixture and having a gum contact;
A prosthesis having an inner surface coupled to the upper portion of the rent column; And
It is provided between the outer surface of the rent column and the inner surface of the prosthesis, includes a bonding layer formed by a bonding agent,
The rent owner,
A prosthesis support portion extending upward from the gum contact portion and extending round to reduce an outer diameter toward the upper portion;
A post provided on an upper side of the prosthetic support and having an outer surface joined to an inner surface of the prosthesis; And
A recess is formed between the prosthesis support portion and the post,
The bonding layer is formed in the groove,
The prosthesis support portion has a support surface that extends rounded by a first radius of curvature in a direction of decreasing outer diameter from the gum contact portion toward the post, and supports an inner surface of the prosthesis,
In the post,
A cylindrical post body;
A post anti-rotation part configured to face away from the outer circumferential surface of the post body and prevent rotation of the prosthesis;
A plurality of first round parts provided at both sides of the post anti-rotation part and extending round from the both ends of the post anti-rotation part toward the outer circumferential surface of the post main body at a second radius of curvature; And
It is formed on the upper end of the post body, and includes a second round portion rounded to a third radius of curvature corresponding to the shape of the upper surface of the inner surface of the prosthesis,
The plurality of first round portions have a radius of curvature different from the radius of curvature of the post body to bend about an end of the post body to form a curved surface in the circumferential direction,
The first radius of curvature formed by the support surface of the prosthesis support portion is formed in the range of 0.2 ~ 1.0mm,
The implant is formed to be equal to the second radius of curvature of the first round portion and the third radius of curvature of the second round portion. delete delete delete

Images