KR102499107B1 - One body-type abutment for implants with improved load distribution and prosthesis bonding - Google Patents

Abstract

Provided is a technology which has a simple manufacturing process, low possibility of damage, and a large available load compared to a conventional abutment, so that a prosthesis can be formed relatively thick, thereby increasing stability, and effectively preventing removal of the prosthesis and a screw for fixing the prosthesis. An integrated abutment for implant having improved load distribution and prosthesis bonding, according to one embodiment of the present invention, comprises: a body part which has a first end surface at an upper portion thereof and a second end surface having a diameter different from that of the first end surface at a lower portion of the first end surface, and which has a hollow portion at the center thereof, into which a prosthesis screw is inserted; a screw insertion part which is integrally formed while extending downward from the body part, and is inserted into a fixture fixed to an alveolar bone by screwing; and a post part which is integrally formed while extending to an upper portion of the first end surface of the body part, and the center of which includes a plurality of support posts formed in a circumferential direction along the center of the hollow portion so that the hollow portion extends, wherein an inclined part is formed to obliquely connect between the uppermost side surface and an upper surface of each of the support posts constituting the post part, and the planar shape of the outermost surfaces of the support posts is partially formed with a straight line portion, not a circular one.

Description

All-in-one abutment for implants with improved load distributing force and prosthetic bonding force

The present invention relates to an abutment that is placed to fix an alveolar bone fixture and a prosthesis to each other during an implant procedure. The present invention relates to a technology capable of effectively preventing removal of a prosthesis and a screw for fixing the prosthesis while increasing stability by forming a relatively thick prosthesis.

BACKGROUND OF THE INVENTION [0002] An implant procedure generally refers to a method of implanting an artificial tooth into an alveolar bone. In order to replace the lost tooth root, a tooth root made of titanium, etc., which is not rejected by the human body, is planted in the alveolar bone where the tooth has been removed, and an artificial tooth is fixed to restore the function of the tooth.

Unlike general prostheses and dentures, implants are used as an efficient tooth reconstruction method by semi-permanent use because they do not damage the appendix tooth tissue and prevent the risk of tooth decay. In general, dental implant surgery is performed by embedding an implant into alveolar bone and attaching an artificial tooth by connecting an abutment to the implant.

At this time, a fixture is fixed to the alveolar bone, an abutment on which the prosthesis is placed is placed and fixed, and then a prosthesis, that is, an artificial tooth, is fixed to the abutment of the abutment to complete the artificial tooth.

At this time, the prosthetic appliance and the abutment are usually fixed by a prosthetic screw. After the prosthetic screw is fixed to the abutment, when a load is applied to the prosthetic appliance by an act such as chewing food, the prosthetic screw loosens and There is a problem in that the screw and the prosthesis itself are removed from the butment.

In addition, if the load of the prosthesis is large as the procedure is performed by placing the prosthesis on the straight abutment, the load is applied on the abutment, causing the prosthesis to sit down or move toward the alveolar bone, causing pain or Damage to the implant shape may be applied.

Prior art for the existing abutment allows the angle between the upper and lower abutment to be adjusted, such as Korean Patent Registration No. 10-1966407, so that the abutment can be placed at various placement angles. We present a technique that allows

However, although this technology has the above angle adaptation effect, there is no structure to distribute the load applied to the prosthesis due to the simple cross-sectional structure, so when a thick or large prosthesis is installed on the abutment, the prosthesis flows down, causing considerable pain in the alveolar bone. There is a problem that causes

In addition, as described above, when a load is applied to the prosthetic appliance by an act such as chewing food, a problem in which the screw and the prosthetic appliance itself are removed from the abutment while the prosthetic screw is loosened occurs.

Accordingly, the present invention provides a technology having a structure capable of effectively distributing the load of a prosthetic appliance in an abutment installed for an implant procedure and at the same time reliably preventing the rotation or removal of the prosthetic screw and prosthetic appliance from the abutment. An object of the present invention is to provide a technique for reducing damage to the implant structure by the prosthesis and pain applied to the alveolar bone.

Another object of the present invention is to provide a technique that can effectively solve the problem of prosthesis processing being difficult due to the upper structure of the abutment when processing the prosthesis.

In order to achieve the above object, an integrated abutment for implant with improved load distributing force and prosthetic bonding force according to an embodiment of the present invention includes a first cross section on the upper part and a diameter of the first cross section on the lower part of the first cross section. a second cross-section having a diameter different from that of the body portion formed with a hollow portion at the center of which a prosthesis screw is inserted; a screw mounting unit extending downwardly from the body unit and integrally formed, and inserted into a fixture fixed to the alveolar bone by screwing; and a post portion integrally formed while extending to an upper portion of the first end surface of the body portion, the center of which is formed of a plurality of support posts formed in a circumferential direction along the center of the hollow portion so that the hollow portion extends. It is characterized in that an inclined portion is formed to obliquely connect the uppermost side surface and the upper surface of the support posts, and the planar shape of the outermost surface of the support posts is partially formed with a straight portion rather than a circular shape.

The maximum outer diameter of the support post is configured to be smaller than the diameter of the first end surface, so that the support post is located inside the first end surface, so that a step is formed between the support post and the first end surface. It is desirable to do

The post part is formed such that a diameter formed by an inner surface of the support post is smaller than an outer diameter of the main body of the prosthesis screw, and the height of the hollow part is such that, when the prosthesis screw is installed, the prosthesis screw head is positioned above the uppermost surface of the support post. By setting the height to be spaced apart, in a state in which the prosthesis screw is mounted, central pressure is applied to the prosthesis screw to prevent the prosthesis screw from being separated from the body, and the support post installs the prosthesis screw Accordingly, it is preferable to prevent the prosthesis from being separated from the body due to an external force causing the prosthesis screw body to move away from the center and a top surface of the support post and a head of the prosthesis screw to engage.

It is preferable that the diameter of the second cross section is set larger than the diameter of the first cross section.

An inclined plane connecting the first end face and the second end face is formed between the first end face and the second end face so that the diameter gradually increases from the outer circumferential line of the first end face to one circumferential line of the second end face. it is possible to become

It is preferable that the number of support posts is even.

According to the present invention, loads applied from the prosthetic appliance in various directions are evenly applied to the entire abutment by the step between the first end surface, the second end surface, and the upper support post and the slope formed by the first end surface and the second end surface. Distributed. As a result, the thickness and size of the prosthesis can be expanded, making it adaptable to various procedures, and there is an effect of reducing damage to the implant structure and pain applied to the alveolar bone by the prosthesis.

In addition, when there are a plurality of support posts constituting the upper post, when the prosthetic screw is installed, the support post is slightly (1 to 2 mm) widened by the screw, and the screw is clamped in a clip method, applying pressure in the center direction to the screw. , As pressure is applied to the prosthesis in the outer diameter direction, there is an effect of preventing removal by rotation of the screw and removal of the prosthesis in the vertical direction at the same time.

1 is a side view for explaining the structure of an integrated abutment for an implant with improved load distribution force and prosthetic bonding force according to an embodiment of the present invention.
2 is a plan view for explaining a cross-sectional shape of an integrated abutment for an implant having improved load distributing force and prosthetic bonding force according to an embodiment of the present invention.
3 is a view of some configurations for explaining the state of a support post when a prosthetic screw is inserted according to an implementation of an embodiment of the present invention.
Figure 4 is a perspective view of an integrated abutment for implants with improved load distribution force and prosthetic bonding force according to an embodiment of the present invention.
5 is a partial side cross-sectional view for explaining the shape of a hollow part of a prosthesis according to an embodiment of the present invention;

In the following, various embodiments and/or aspects are disclosed with reference now to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings describe in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in principle of the various aspects may be used, and the described descriptions are intended to include all such aspects and their equivalents.

References to “embodiment,” “example,” “aspect,” “example,” etc., used in this specification should not be construed as indicating that any aspect or design described is preferable to or advantageous over other aspects or designs. .

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements and/or groups thereof. It should be understood that it does not.

In addition, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are those commonly understood by those of ordinary skill in the art to which the present invention belongs. have the same meaning. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning not be interpreted as

On the other hand, in the following description, although some components are omitted or excessively enlarged or reduced in order to explain the function of each component of the present invention, the matters described in the drawings represent the technical features and rights of the present invention. It will be understood that it is not intended to limit the scope.

1 is a side view for explaining the structure of an integrated abutment for implant with improved load distribution force and prosthesis bonding force according to an embodiment of the present invention, and FIG. 2 is a side view showing improved load distribution force and prosthesis bonding force according to an embodiment of the present invention. FIG. 3 is a plan view for explaining the cross-sectional shape of an integrated abutment for implantation, FIG. 3 is a view of some configurations for explaining the state of a support post when a prosthetic screw is inserted according to an embodiment of the present invention, FIG. 4 is a perspective view of an integrated abutment for implant with improved load distribution force and prosthetic bonding force according to an embodiment of the present invention, and FIG. am. In the following description, a plurality of drawings will be described with reference to one technical feature or component constituting the invention at the same time.

Referring to the above drawings together, the integrated abutment for implant (hereinafter referred to as 'the abutment of the present invention') having improved load distribution force and prosthetic bonding force according to an embodiment of the present invention, the body portion 10 ), a screw mounting portion 20 and a post portion 30.

In the present invention, the abutment 1 is the most important element in the prosthetic stage of implant treatment. As a structure that provides a fixing force to the fixture while being in contact with the prosthesis, it provides support and holding power to the prosthesis, and may be configured to withstand a functional load transmitted through the restoration, that is, a load applied to the prosthesis. Generally, zirconia abutments may be preferred over titanium abutments in the anterior region when an all-ceramic restoration is the final restoration.

The abutment can be manufactured as an integrated fixture and placed together with the fixture, but it is not commonly used. In the separable method, a separate abutment is fastened to the fixture, the retaining screw is brought up to the torque value according to the manufacturer's specifications, the prosthesis is inserted on top of the abutment, and then tightened with a screw (40) or cement. will be fixed with

The separable method is used in various ways because it can accommodate various implant angles and secures control over the esthetic path. That is, it provides the main use of fluidity during implant treatment.

There are many different methods that doctors can use to fasten implants and abutments, usually considering requirements for strength, fatigue resistance, anti-rotation properties, and microleakage. Strength is a requirement for minimizing the load on the implant/abutment interface, and means that the prosthesis and occlusion must be designed so that excessive force is not applied.

Fatigue resistance is the ability of the joint to withstand progressive, local, repetitive or dynamic stress. The anti-rotation property is to prevent the movement of the prosthesis or the holding screw from being bitten, and the fine nut tool is a necessary requirement to limit the amount of bacterial infection between the abutment and the fixture head.

As shown in FIG. 1 , the abutment 1 of the present invention refers to an abutment of a separable type that is separated from the fixture and coupled to the fixture while the screw mounting portion 20 rotates.

First, the body portion 10 has a first end face 11 at the top and a second end face 12 having a diameter different from that of the first end face 11 at the bottom of the first end face 11 according to the present invention. Refers to a structure that serves as an abutment of the abutment (1) of That is, it can be understood as a concept referring to the configuration of the main body that bears the load from the prosthesis.

In the present invention, the body portion 10 is characterized by having a first end face 11 and a second end face 12. As described above, the cross sections 11 and 12 are characterized in that they are configured to have different cross sections.

At this time, in order to achieve one object of the present invention of evenly distributing the load of the prosthesis installed while surrounding the post part 30 and the body part 10, as shown in FIG. 2, in the present invention, the second cross section 12 ) is preferably set larger than the diameter R3 of the first end surface 11 of the present invention.

In addition, the diameter R2 of the second end face 12 may be set to be larger than the diameter R1 of the outer diameter of the plurality of support posts 32 constituting the post part 30 to be described later, which is installed to be deeply inserted into the prosthesis. can

According to the above embodiment, between the first end face 11 and the second end face 12, one circumferential line of the second end face 12 from the outer circumferential line of the first end face 11, that is, the outer circumferential line of the outermost edge An inclined surface 14 connecting the first end face 11 and the second end face 12 may be formed while a line directed toward a circumferential line located partially inside from has a diameter gradually widening.

The inclined surface 14 has an effect of increasing the bonding feeling of the prosthesis and preventing foreign matter from penetrating into the abutment 1 from the prosthesis. In addition, by forming a partial plane formed by the contact line of the inclined surface 14 from the outermost circumferential line while the above-described inclined surface 14 is located partially inside from the outer circumferential line of the outermost edge of the second end section 12, As a result, the thickness of the prosthesis, for example, a ceramic prosthesis, can be increased, thereby preventing damage to the implant such as cracking of the margin.

On the other hand, the screw insertion portion 20 is integrally formed while extending downward from the body portion 10, and is inserted into a fixture fixed to the alveolar bone by screwing. As shown in FIG. 1, the diameter of the screw mounting portion 20 is smaller than the diameter of the body portion 10, so that it can be stably inserted into the fixture.

To this end, the insertion part-side inclined surface 13 whose diameter gradually decreases toward the screw insertion part 20 toward the lower end of the body part 10 may be formed. This will be understood as a configuration for integrally forming the entire configuration of the abutment 1 of the present invention. In addition, a screw thread 21 is formed to be screwed into the fixture of the screw mounting unit 20 .

The post part 30 includes a plurality of support posts 32 as described above, and includes a hollow part 31 between the support posts 32 . That is, the post part 30 is integrally formed while extending to the upper part of the first end surface 11 of the body part 10, and a hollow part 31 into which a prosthesis screw is inserted is formed at the center, and the hollow part 31 ) Means a configuration consisting of a plurality of support posts 32 formed in the circumferential direction along the center.

At this time, it will be understood that the hollow part 31 is also formed in the body part 10 so that the aforementioned prosthetic screw 40 is inserted through the body part 10, in addition to being a space between the plurality of support posts 32. will be. That is, a plurality of support posts 32 are provided in the circumferential direction (radial) along the center of the hollow part 31 so that the center of the plurality of support posts 32 extends the hollow part 31 formed in the body part 10. It can be configured to form.

That is, in the present invention, the support post 32 is formed in the height direction with respect to the hollow part 31 to provide a path through which the prosthetic screw is inserted, and is formed radially in the circumferential direction, that is, within the same radius from the center of the hollow part 31. Characterized in that it is formed by

At this time, in the present invention, as shown in (a) of FIGS. 2 and 3, the inclined portion 34 connecting the uppermost side surface and the upper surface of the support post 32 constituting the post portion 30 at an angle to each other is It is formed, and the planar shape of the outermost surface of the support posts 32 is characterized in that a straight portion 33 that is not circular is partially formed.

When the abutment 1 is inserted into the fixture and the prosthesis 2 is installed thereon, the planar cross-section of the abutment 1 is usually circular, so that the prosthesis 2 can be rotated. In order to prevent this case, in some existing abutments, rotation is prevented by forming the above-described first end face 11 as a partial straight line rather than a circular shape. However, in this case, the body portion 10 itself, such as the first end surface 11 to which the load of the prosthesis 2 is applied, is implemented asymmetrically, so rotation can be prevented, but there is a problem in that the load is not evenly distributed. .

In order to completely prevent this case in the present invention, in the present invention, as described above, the planar shape of the outermost surface of the support posts 32 is implemented such that a part of the straight portion 33 is formed rather than a circular shape. Accordingly, the body portion 10 itself is formed in a circular shape so that the load is completely evenly distributed to improve the bearing capacity of the prosthetic appliance 2 and at the same time, rotation of the prosthetic appliance 2 can be effectively prevented by the straight portion 33. . Meanwhile, the function of the inclined portion 34 will be described later.

As shown in FIG. 2 , the support post 32 may have a maximum outer diameter R1 smaller than the outer diameter R2 of the second end surface 12 as described above. In addition to this, R1 can be set smaller than the outer diameter R3 of the first end surface 11 . In this case, the first end surface 11 may have a flat surface from the outermost outer diameter of the support post 32 to the outermost outer circumference of the first end surface 11 .

This step constitutes a region formed between the support post 32 and the first end face 11 by allowing the support post 32 to be located in a region inside the first end face 11 . As described above, the step of the abutment effectively distributes the load applied to the prosthesis, thereby preventing pain and damage to the implant structure itself due to pressure applied to the alveolar bone by the load of the prosthesis. In particular, rotation of the prosthesis 2 is prevented by the straight portion 33, so that the step between the first terminal 11 and the abutment is completely symmetrically implemented, so that the above-described effect can be maximized.

Meanwhile, as shown in (a) and (b) of FIG. 3 , in the post part 30, the diameter R5 of the inner surface between the support posts 32 is equal to the outer diameter R4 of the prosthetic screw 40. It may be formed to be equal to or smaller than the outer diameter.

In this case, when the prosthesis screw 40 is inserted from the hollow part 3 formed in the prosthesis 2 along the hollow part 31, according to the relationship between the outer diameters R4 and R5, in FIG. 3(b) As shown, due to the contact between the outer diameter of the prosthesis screw 40 and the support post 32, the support post 32 is subjected to pressure to move away from the center.

In particular, in the present invention, it is formed to be smaller than the outer diameter of the main body 41 of the prosthesis screw 40. In addition, the height of the hollow itself, as shown in (b) of FIG. 3 , when the prosthesis screw 40 is completely installed, the head 42 of the prosthesis screw 40 is at the top of the uppermost surface of the support posts 32 It is characterized in that it is set to a height that is spaced apart at a certain height (h).

In this case, pressure toward the inner surface of the prosthesis screw 40 is generated in the direction F of the pressure, and pressure is applied to the prosthesis screw 40 in a central direction in a clip manner, thereby loosening the prosthesis screw 40. symptoms can be minimized. At the same time, a locking pressure is applied to the installed prosthesis 2, so that the prosthesis 2 is prevented from being removed by the support posts 32.

In particular, the head 42 is not completely inserted, and the above-described inclined portion 34 is supported by an external force caused by the insertion of the main body 41 of the prosthesis screw 40, so that the support post 32 is attached to the prosthesis screw 40. When moved away from the center by an external force that moves away from the center by the main body 41 of the prosthesis screw 40 according to the installation of the prosthesis screw 40, the angle is perpendicular to the installation plane as shown in (b) of FIG. can be set.

A wide variety of effects can be achieved by such an embodiment of the present invention. That is, as shown in (b) of FIG. 3, at the same time as the support post 32 moves away and holds the prosthesis 2 once, the head 42 of the prosthesis screw 40 partially moves away from the center. The prosthesis 2 can be completely prevented from being separated from the body part 10 by holding the prosthesis 2 auxiliaryly as it protrudes.

On the other hand, according to the setting of the angle of the inclined portion 34 of the support post 32 and the height h of separation between the support post 32 and the prosthesis screw 40, the formation of the inner hollow portion 3 of the prosthesis is extremely Milling can be performed with an easy and stable structure.

That is, as shown in FIG. 5 , according to the above-described setting of the angle of the inclined portion 34 of the support post 32 and the height h of separation between the support post 32 and the prosthesis screw 40, the hollow portion 3 The shape of ) is the widest at both ends of the prosthesis 2 and is smallest in the center, that is, the separation region. In this case, milling may be easily performed to the widest width at both ends of the prosthesis 2 due to the characteristics of the milling device entering the inside, and then milling may be performed with a small width at the center, that is, the spaced area.

Conversely, however, for example, when the head 42 is completely inserted into the support post 32, unlike the embodiment of FIG. 5, the width of the central region where the support post 32 is spread is widest compared to both ends. . In this case, it is very difficult to perform milling with a narrower width on both ends and milling (cutting) with a wider width in the center, making it impossible to perform precise processing for each width, so that the prosthesis 2 is not stably attached and removed. It will become or shaken.

In the present invention, the prosthesis 2 is completely prevented from being detached from the body 10 according to the distance h between the support post 32 and the prosthesis screw 40, and at the same time, the hollow part 3 is removed. Shape fabrication can be made very precise and efficient.

On the other hand, in order to apply the aforementioned pressure in a balanced manner, it is preferable to form and configure an even number of support posts 32 .

As described above, although the embodiments have been described with limited examples and drawings, those skilled in the art will understand that various modifications and variations are possible from the above description. Terms such as "comprise", "comprise", or "having" described above mean that components that are not specifically stated to the contrary may be inherent, so other components are not excluded but other components are included. It should be interpreted as being more inclusive. In addition, the protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims (6)

a body portion having a first end surface at an upper part and a second end section having a diameter different from that of the first end section at a lower portion of the first end section and having a hollow portion into which a prosthesis screw is inserted;
a screw mounting unit extending downwardly from the body unit and integrally formed, and inserted into a fixture fixed to the alveolar bone by screwing; and
Including; a post portion integrally formed while extending to an upper portion of the first end surface of the body portion, the center of which is formed of a plurality of support posts formed in a circumferential direction along the center of the hollow portion so that the hollow portion extends,
An inclined portion is formed that obliquely connects a side surface and an upper surface of the uppermost side of the support posts constituting the post portion, and the planar shape of the outermost surface of the support posts is partially formed with a non-circular straight portion,
The post part,
The diameter formed by the inner surface of the support post is smaller than the outer diameter of the main body of the prosthesis screw, and the height of the hollow is such that the prosthesis screw head is spaced apart from the uppermost surface of the support post when the prosthesis screw is installed. By setting to
In a state in which the prosthesis screw is mounted, pressure is applied to the prosthesis screw in a central direction to prevent the prosthesis screw from being separated from the body, and the support post attaches to the main body of the prosthesis screw according to the installation of the prosthesis screw. preventing the prosthesis from being separated from the body due to an external force moving away from the center and a hook between the uppermost surface of the support post and the head of the prosthesis screw;
The prosthesis screw,
The main body and the head, excluding the area where the screw thread is formed, have different diameters in the central direction, so that a stepped surface in the central direction is formed between the main body and the head of the prosthesis screw. Integral abutment for
According to claim 1,
The maximum outer diameter of the support post is configured to be smaller than the diameter of the first end surface, so that the support post is located inside the first end surface, so that a step is formed between the support post and the first end surface. An integral abutment for implants with improved load distribution and prosthetic bonding force, characterized in that.
delete According to claim 1,
Integrated abutment for implant with improved load distribution force and prosthesis bonding force, characterized in that the diameter of the second cross section is set to be larger than the diameter of the first cross section.
According to claim 4,
An inclined plane connecting the first end face and the second end face is formed between the first end face and the second end face so that the diameter gradually increases from the outer circumferential line of the first end face to one circumferential line of the second end face. An integral abutment for implants with improved load distribution and prosthetic bonding force, characterized in that.
According to claim 1,
The integrated abutment for implants with improved load distribution force and prosthetic bonding force, characterized in that the support post is composed of an even number.

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