WO2019203525A1

WO2019203525A1 - Magnetic attachment for overdenture

Info

Publication number: WO2019203525A1
Application number: PCT/KR2019/004549
Authority: WO
Inventors: 이재준
Original assignee: (주)에스겔
Priority date: 2018-04-16
Filing date: 2019-04-16
Publication date: 2019-10-24
Also published as: KR101988392B1

Abstract

The present invention relates to a magnetic attachment for an overdenture, the magnetic attachment comprising: a keeper disposed in an upper portion of an implant implanted in an alveolar bone; and a magnet disposed in an overdenture and detachably coupled to the keeper by a magnetic force, wherein a head part protrudes from the central portion of the upper end of the keeper, and a head socket part, to which the head part can be inserted and coupled, is concavely formed in the central portion of the lower end of the magnet. According to the present invention, it is possible to secure a stable coupling retention force for an overdenture while reducing the height at which the overdenture is installed.

Description

Magnetic attachment for overdenture

The present invention relates to an overdenture magnetic attachment for stably coupling and maintaining an overdenture to an implant placed in an alveolar bone.

In general, since human teeth do not produce new teeth anymore when permanent teeth are generated, implant procedures for implanting artificial teeth to replace lost teeth are being actively performed when such permanent teeth are lost.

By the way, such implants need to be implanted in correspondence with the number of missing teeth, so if a large number of teeth are lost, replacing them with implants incurs a considerable amount of treatment cost and a long time for treatment. This can only be, in the case of patients with insufficient amount of remaining gum bone, there is a limit that is difficult to perform.

Therefore, in order to make up for the shortcomings of the implant procedure, an implant supported overdenture procedure that combines the advantages of the traditional denture and each implant has been in the spotlight recently.

The implant-supported overdenture procedure is an attachment providing two to four implants on the gums, which provides a holding force, and secures the overdenture to the implant so that it is detachable. While it is difficult to apply an implant procedure, it is becoming an alternative to the costly implant procedure.

In such implant-supported overdentures, attachments that provide a coupling retention force between the implant and the overdenture have been disclosed in various structures, and magnetic attachments that provide a retention force by magnetic force are representative of them.

The magnetic attachment is typically provided with a keeper on top of the implant implanted in the alveolar bone, the overdenture is composed of a magnetic is coupled to the keeper by the magnetic force, to secure the coupling holding force between the implant and the overdenture by the magnetic force Done.

However, in the case of the conventional magnetic attachment, the keeper and the magnetic are mutually coupled to each other in a planar form, so that the coupling holding force against the lateral pressure acting in the horizontal direction is particularly low.

In addition, since only the holding force by the magnetic force is used, in order to secure proper holding force, the chopper and the magnetic have to have a certain thickness or more, and accordingly, the installation height of the overdenture is considerably increased, resulting in deterioration of stability and unfavorable aesthetics. have.

The present invention is proposed to solve the above-described problems, the object of the present invention is to improve the structure of the keeper and the magnetic to ensure a stable coupling holding force for the overdenture while reducing the installation height of the overdenture It is to provide magnetic attachment for overdenture.

As a problem solving means of the present invention for achieving the above object,

A keeper provided in the upper portion of the implant placed in the alveolar bone, and an overdenser, and a magnetic coupled to the keeper detachably by magnetic force, wherein a head part protrudes from the upper center of the keeper, and the magnetic Disclosed is a magnetic attachment for an overdenture in which a head socket portion into which a head portion can be fitted is inserted into a lower center portion.

According to the magnetic attachment for overdenture according to the present invention,

Since the keeper and the magnetic are provided to the complex holding force by the fitting through the magnetic coupling and the coupling through the elastic fastening, there is an effect that can secure a stable coupling holding force for the overdenture while reducing the installation height of the overdenture.

1 is a view illustrating a schematic configuration of a magnetic attachment according to an embodiment of the present invention;

2 is a view illustrating a cross-sectional configuration of a magnetic attachment in a separated state according to an embodiment of the present invention;

3 is a view illustrating a cross-sectional configuration of a magnetic attachment in accordance with an embodiment of the present invention in a combined state,

4 is a view illustrating a schematic configuration of a magnetic attachment according to another embodiment of the present invention;

5 is a diagram illustrating a cross-sectional configuration of a magnetic attachment according to another embodiment of the present invention in a separated state;

6 is a diagram illustrating a cross-sectional configuration of a magnetic attachment according to another embodiment of the present invention in a combined state;

FIG. 7 is a diagram illustrating a configuration in which magnetics of an overdenture are interconnected by a connecting bar.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the magnetic attachment for overdenture according to the present invention.

This embodiment is provided to more completely explain the present invention to those having ordinary skill in the art, the shape, size, spacing of the elements of the elements in the accompanying drawings to highlight more clearly described. It should be noted that this may be reduced or exaggerated.

1 to 7 illustrate the configuration and operation of the magnetic force attachment for overdenture according to the present invention. Referring to the drawings, the magnetic force attachment for overdenture of the present invention (hereinafter, abbreviated as “attachment 100”). .) Is a basic configuration includes a keeper 110 provided on the implant 200, and a magnetic 120 provided on the lower portion of the overdenser 300.

First, the keeper 110 is provided on the upper portion of the implant 200 is placed in the alveolar bone is located on the gum (T).

The keeper 110 is provided on the upper portion of the implant 200, consisting of an element independent of the implant 200 may be applied to the configuration that is fixed to the implant 200 through the screw or bolt fastening, etc., unlike the implant It is also possible to apply in a configuration formed integrally with the (200).

In addition, the keeper 10 is made of a material that can be attached to the magnetic 120 by a magnetic force, for example, may be made of a metal, such as a magnet or titanium or stainless steel.

As illustrated in FIG. 1, the head part 111 is formed at the center of the upper end of the zipper 110.

The head 111 is formed to protrude a predetermined height upward from the center of the top of the keeper 110, it may have a cylindrical shape.

The head 111 is fitted into the head socket portion 121 to be described later when the keeper 110 and the magnetic 120 are coupled.

Next, the magnetic 120 is provided at the lower portion of the overdenture 300, and detachably attached to the keeper 110 by magnetic force to provide a coupling holding force.

The magnetic 120 is inserted into the lower portion of the overdenture 300 to be fixed to the overdenture 300 by an adhesive resin, etc., and can be fixed in various other ways.

As illustrated in FIG. 1, the magnetic socket 120 has a head socket portion 121 formed at a lower center portion thereof.

The head socket portion 121 is formed to be recessed upwardly corresponding to the protruding shape of the head portion 111 at the lower center of the magnetic 120.

When the keeper 110 and the magnetic 120 are coupled to the head socket part 121, the head part 111 is fitted into the head socket part 121.

The keeper 110 and the magnetic 120 having the above-described configuration are attached to each other by magnetic force, and together with the coupling force by the magnetic force, the head 111 is the head socket portion 121 as illustrated in FIG. 3. ) Has a fitting structure in which the lateral flow is constrained, so that it is possible to secure a stable coupling holding force against the lateral acting mastic force.

Here, at the top of the keeper 110 and the bottom of the magnetic 120 in contact with each other, except for the head portion 111 and the head socket portion 121 may be formed flat as in the prior art, Alternatively, as illustrated in the drawings, the upper end of the keeper 110 is formed with an inclined surface 112 which extends downwardly inclined at an angle from the outer periphery of the lower end of the head portion 111, the lower end of the magnetic 120 The inner inclined surface 122 is formed to be inclined downward at a predetermined angle downward from the lower end of the head socket portion 121 to correspond to the outer inclined surface 112 of the keeper 110 is configured to be inclined mutually. May be

When the inclined contact is made in this way, the magnetic force acts as a force in the vertical direction and the horizontal direction on the contact surface, and the contact surface is increased to further improve the coupling holding force.

On the other hand, the keeper 110 and the magnetic 120 may be further provided with a fastening configuration to the head portion 111 and the head socket portion 121 in order to improve the coupling holding force for the chewing force acting in the vertical direction.

As an example for this purpose, as illustrated in FIGS. 1 to 3, the lower end of the head portion 111 is formed with a locking neck 113 recessed inward, and the lower end of the head socket portion 121. A locking jaw 123 protruding in a shape corresponding to the locking neck 113 may be formed, and an inner sheet 124 capable of elastic deformation may be provided inside the head socket portion 121.

By such a configuration, when the head 111 is fitted to the head socket 121, as illustrated in FIG. 3, the locking jaw 123 is caught by the inner neck 124 by the locking neck 113. The head 111 and the head socket 121 are elastically fastened beyond a simple fit state.

Therefore, the keeper 110 and the magnetic 120 are provided with an elastic coupling force in addition to the magnetic force acting perpendicularly to each other, it is possible to secure an improved coupling holding force for the chewing force acting in the vertical direction.

In addition, as illustrated in FIG. 4 to FIG. 6 as another example, a ring engaging groove 114 is formed in the head portion 111, and an elastic clip 125 is installed in the head socket portion 121. Can be.

The ring catching groove 114 is formed along the outer circumferential surface of the head 111, the ring catching groove 114 is the elastic clip 125 is fitted to generate a locking force.

And the upper end of the head portion 111 is formed with a streamlined tapered end 115 is reduced in diameter, the tapered end 115 is an elastic clip when the head portion 111 is fitted to the head socket portion 121 Press 125 so that it can be opened.

As shown in FIG. 4, the elastic clip 125 is formed in a ring shape with a portion thereof cut out, and has an inner diameter relatively smaller than the outer diameter of the head portion 111.

The elastic clip 125 is installed inside the head socket portion 121. Therefore, as illustrated in FIG. 5, the head socket portion 121 is provided with a clip mounting groove 126 that can be mounted while the inner portion of the elastic clip 125 protrudes from the inner surface of the head socket portion 121. The clip mounting groove 126 has a free space 126a through which the elastic clip 125 can be opened.

Here, in the case where the elastic clip 125 is installed as described above, the magnetic body 120 is based on the upper and lower middle portions of the clip mounting groove 126 to facilitate the mounting, replacement, etc. of the elastic clip 125, the upper body. And divided into a lower body may be made of a structure that is detachably coupled to each other through bolting.

By the above configuration, when the head portion 111 is fitted to the head socket portion 121, the elastic clip 125, a part of which protrudes from the inner surface of the head socket portion 121, first of the head portion 111 Pressed by the tapered end 115 is elastically opened.

Subsequently, when the ring engaging groove 114 of the head 111 reaches the position of the elastic clip 125, the elastic clip 125 is restored to its original state, and is inserted into the ring engaging groove 114 as illustrated in FIG. By being caught, the head part 111 and the head socket part 121 are elastically fastened beyond a simple fitting state.

In addition, since the holding force by the elastic fastening is provided together with the holding force by the magnetic force as described above, the installation height of the overdenture can be stably reduced by minimizing the thickness of the magnetic 120.

Meanwhile, the attachment 100 of the present invention having the above configuration may further include a connecting bar 130.

In the case of the implant-supported overdenture procedure, as illustrated in FIG. 7, since about two to four implants 200 are implanted in the gum T, the plurality of magnetics corresponding to the overdenture 300 are also corresponding thereto. Bar 120 is provided, the connecting bar 130 is configured to connect the plurality of magnetic 120 provided in the overdenture 300.

When the magnetic 120 is configured to be connected to each other through the connecting bar 130, the authoring force acting on one side attachment 100 can be distributed to other attachments 100 through the connecting bar 130, a specific implant The concentration of mastication pressure can be effectively prevented.

As described above, the attachment 100 of the present invention is more stable to the overdenture 300 because the keeper 110 and the magnetic 120 are coupled with the coupling by the magnetic force and the coupling through the elastic coupling is made. It can be seen that improved bonding retention can be obtained.

Claims

A keeper 110 provided on an upper portion of the implant 200 placed in the alveolar bone;

Included in the overdenture 300, the magnetic 120 is coupled to the keeper 110 detachably by a magnetic force; including,

The head portion 111 protrudes from the upper center portion of the keeper 110, and the head socket portion 121 into which the head portion 111 can be fitted is inserted into the lower center portion of the magnetic 120. Magnetic attachment for overdenture, characterized in that.
The method of claim 1,

Hanging neck 113 is formed in the lower end of the head 111, the concave,

The lower end of the head socket portion 121 is formed with a locking projection 123 protruding in a shape corresponding to the locking neck 113, the inner sheet 124 is provided with an elastic deformation is possible inside. Magnetic attachment device for overdenture.
The method of claim 1,

The head 111 has a ring engaging groove 114 is formed along the outer circumferential surface,

A portion of the head socket portion 121 is cut inside the inner portion is a ring-shaped elastic clip 125 is installed is relatively smaller than the outer diameter of the head portion 111,

When the head portion 111 and the head socket portion 121 are fitted to each other, the elastic clip 125 is opened and then elastically restored while being fitted into the ring engaging groove 114 to be fastened. .
The method of claim 1,

The overdenser magnetic attachment for the overdenture further comprises a; connecting bar (130) for dispersing the writing power by connecting at least two or more magnetic (120) provided in the overdenture (300).