KR101172838B1 - Multi abutment device - Google Patents

Abstract

The present invention relates to a multi-abutment device for implant surgery, the fixture fixed to the alveolar bone of the patient, and the abutment fixed by a predetermined screw inserted into the through-hole formed in the longitudinal direction in the center from the upper portion of the fixture And a connecting rod for fixing a portion of the impression coping, including a connecting rod installed to be inserted into and fixed to the through hole of the abutment, and an impression coping for pulling up fixed to an upper portion of the connecting rod. It provides excellent separation force and at the same time allows perfect and precise fixation of the prosthesis and can be used as a healing abutment.

Description

Multi Abutment Device {MULTI ABUTMENT DEVICE}

The present invention relates to an abutment device for implant surgery, in particular can be used as a healing abutment, has a sufficient width to facilitate the manufacture of abutments (customized abutment) only for the patient, during the impression acquisition process The present invention relates to a multi-abutment device which induces a smooth separation of the impression coping, and is implemented to enable close and accurate fixing of the fixed prosthesis and the removable prosthesis.

In general, an implant is a screw-titanium artificial tooth root, ie, a fixture, which is implanted in the alveolar bone, and after the bone is fused and hardened around the implanted fixture, the abutment is joined thereon. In this case, the prosthesis, which is an artificial tooth, is made here, and compared to the bridge, which is the most common dental restoration method, the procedure can be performed only on the damaged part without damaging the adjacent teeth or the soft tissue or bone tissue, and is maintained by the bone tissue. As it is supported, the force is continuously applied to the bone tissue, which slows the absorption rate of the bone tissue, and the chewing ability can be restored to the same level as that of natural teeth. Is becoming a global trend.

In this implant procedure, it is most important to make and place the prosthesis correctly according to the tooth shape of the subject.For this purpose, the accurate tooth model is produced by floating the tooth shape of the subject as an impression material and the most accurate prosthesis with this model. It will be manufactured and actually performed.

In general, impression acquisition combines impression copings on top of the fixture and floats a floating impression material thereon, and then secures the lab analog to impression copings placed on the impression material of the tooth model, and then pours plaster thereon To produce. After that, the abutment is fastened to the manufactured tooth model, and the impression process is performed to produce a prosthesis using the impression material again.

Patent No. 2009-0080365 (Applicant's Impression Coping and Impression Acquisition Method Using the Implant Technique), filed by the applicant on August 28, 2009, changes the shape and assembly structure of the impression coping and the abutment applied thereto. Two conventional impression acquisition processes can be performed at once until byte acquisition.

In this configuration, in order to smoothly remove the impression coping from the abutment after applying the impression material, the abutment is generally smaller and shorter than the conventional abutment, thereby resulting in the contact surface between the impression coping and the abutment. Slanting gently disclosed the advantage that the impression coping was easily separated from the abutment.

However, this configuration has good separation ability in the abutment of impression coping, but the overall length of the abutment device is short, making it difficult to use as a healing abutment, and the possibility of the procedure failure due to loosening of the screw fixing the abutment. It implies

In order to solve the above problems, it is an object of the present invention to provide a multi-abutment device that can be implemented to be relatively smooth removal of the impression coping during the impression acquisition process.

Another object of the present invention is to provide a multi-abutment device that can be relatively smoothly removed during the impression acquisition process, and to facilitate the fixing of the fixed prosthesis and the connection of the removable prosthesis.

Still another object of the present invention is to provide a multi-abutment device usable as a healing abutment.

A still further object of the present invention is to provide a multi-abutment device which is implemented to compensate for the respective disadvantages of fixture level impression and abutment level impression.

Another object of the present invention is to provide a multi-abutment device that is implemented to prevent the loosening of the screw in advance after mounting the fixed prosthesis.

In order to solve the problems as described above, the present invention is a multi-abutment device for implant surgery, a fixture fixed to the alveolar bone of the patient, and a through hole formed in the longitudinal direction in the center from the upper portion of the fixture An abutment fixed by a predetermined screw inserted into the connecting rod, a connecting rod installed to be inserted into and fixed to a through hole of the abutment, and an impression capping impression coping fixed to an upper portion of the connecting rod. do.

The multi-abutment device according to the present invention can provide a good separation force of the impression coping by adding a connecting rod for fixing the impression coping, and at the same time can perform a perfect and precise fixing of the prosthesis, can also be used as a healing abutment It can be effective.

1 is an exploded perspective view of a multi abutment device according to an embodiment of the present invention; And
Figure 2 is a cross-sectional view showing a combined state of the multi abutment device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, if it is determined that the gist of the present invention may be unnecessarily blurred, detailed description thereof will be omitted.

1 is an exploded perspective view of a multi abutment device according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a combined state of the multitude of the abutment device according to an embodiment of the present invention.

In the present invention, unlike the prior art, the impression coping is not coupled to the abutment, it is fixed to the upper portion of the connecting rod that is separately interposed. Thus, the abutment device may be compensated for a sufficient length.

As shown in Figure 1 and 2, the multi-abutment device is fixed to the fixture of the patient's alveolar bone made of titanium, and fixed by a predetermined screw 30 on the upper portion of the fixture 40 An abutment 10, a connecting rod 50 fixed to an upper portion of the abutment 10, and an impression coping 20 fixed to an upper portion of the connecting rod 50 and for pulling up the impression.

The abutment 10 according to the present invention is divided into an upper portion 12 and a lower portion 13 around the boundary end 11 having the largest diameter. The upper portion 12 may have a vertical length that is equal to or longer than the upper portion of the existing abutment. This is due to the fact that the impression coping 20 is not coupled with the top 12 of the abutment 10 so that the inclination of the top 12 can be arbitrarily determined.

The abutment 10 includes an upper surface 15, and the upper surface 15 includes a through hole 14 having a predetermined diameter. The groove 15 is formed on the upper surface 15 at equal intervals, the groove 16 serves to prevent the flow of the connecting rod 50 and the impression coping 20 to be described later. Preferably, the groove 16 is formed in three places, but may be formed in more than that number.

As shown in FIG. 2, a step is provided on the inner circumferential surface of the through hole 14 of the abutment 10 so that the head 31 of the screw 30 does not completely penetrate the through hole 14. It serves to fix the abutment 10 to the fixture (40).

The abutment 10 is manufactured so that the boundary end 11 is relatively wider than the healing abutments of each company, and the shape of the abutment 10 has an S-shape, a U-shape, a straight line, etc. It may be used as a healing abutment to allow for the use of customized abutments.

The connecting rod 50 is integrally formed with a shaft portion 52 having a predetermined length and a predetermined head 51 having a diameter larger than the diameter of the shaft portion 52 at the upper portion of the shaft portion 52. do. The head 51 of the connecting rod 50 preferably has a triangular shape having a top surface in cross section, and the outer circumferential surface is formed in a polygon.

The shaft portion 52 is a portion inserted into the through hole 14 of the abutment 10 is formed with at least one protruding tension projection 521 along the outer peripheral surface, the abutment ( In place of the inner circumferential surface of the through hole 14 of 10), a seating groove (17 in FIG. 2) is formed to seat the tension protrusion 521.

Preferably, the connecting rod 50 is fixed to the through hole 10 of the abutment 10 in an interference fit manner. Furthermore, the coupling structure of the tension protrusion 521 and the seating groove 17 may assist the interference fitting of the connecting rod 50.

More preferably, the connecting rod 50 may be formed of a synthetic resin material. However, the present invention is not limited thereto, and the shaft portion 52 may be formed of a synthetic resin material, and the metal head reacting to the magnet may be combined by insert molding.

In addition, the head 51 is formed with protrusions 511 protruding downward at equal intervals, which means that the shaft portion 52 of the connecting rod 50 is a through hole 14 of the abutment 10. When the projection 511 is completely inserted in the interference fit method is to be seated in the groove 16 formed on the upper surface 15 of the abutment 10 to prevent its own rotation and flow.

The impression coping 20 has a shaft shape in which the lower part 24 and the upper part 21 having a larger diameter than the lower part are integrally formed. The upper portion 21 has an upper surface 22, and a bit piece 27 may be formed or installed on the upper surface 22 to have a predetermined height along an edge thereof and to face the center. This is to fasten the impression coping 20 to the connecting rod 50, and then to induce the correct bite acquisition of the patient before the impression taking, the bite piece 27 is a thin plate type to have the same spacing and equiangular Two or four or more places can be formed or installed. In addition, the bite piece 27 may be integrally formed together with the same material when the impression coping 20 is manufactured, or may be attached to extend along the upper edge of the impression coping 20 in a resin series. There will be.

If the connecting rod 50 is formed of a metal material that reacts with magnetism, the impression coping 20 may be formed of a material having magnetic properties to enable a close and accurate coupling between the connecting rod 50 and the impression coping 20.

Although not shown, the impression coping 20 may use a connection means capable of interconnecting the impression copings in order to obtain a uniform impression at the same time during a plurality of implant procedures. The connecting means may use a connecting piece having a predetermined length, for example, the connecting piece may be formed of a metal or a synthetic resin material and detachably mounted to the impression coping. More preferably, a groove or a protrusion having a predetermined shape may be formed in a side portion of the head of the impression coping, and it may be used to be interconnected by the connecting piece.

Therefore, the assembly relationship of the above-described devices is as follows.

First, the abutment 10 is fixed to the upper portion of the fixture 40 fixed to the alveolar bone of the patient. At this time, the upper end 41 of the fixture 40 is inserted into the through hole 14 located at the bottom of the abutment 10, in this state to the through hole 14 of the abutment 10. Insert and fix the screw (30). When the screw 30 is rotated, the male thread portion 32 of the screw 30 is tightly inserted into the female thread portion 42 of the fixture 40 so that the abutment 10 preferentially has the fixture 40. The fixing is completed.

Thereafter, the shaft portion 52 of the connecting rod 50 is inserted into the upper through hole 14 of the abutment 10 in an interference fit manner. At this time, the head 51 of the connecting rod 50 is inserted until the upper surface 15 of the abutment 10 is in contact, and the protrusion 511 of the head 51 of the abutment 10 Will be seated in each of the grooves 16 formed on the upper surface (15). The protrusions 511 formed on the head 51 may be formed in a number and interval corresponding to the number of grooves 16 formed on the upper surface 15 of the abutment 10. At this time, the tension protrusion 521 of the shaft portion 52 is also seated in the mounting groove 17 formed on the inner circumferential surface of the through hole 14 of the abutment 10 to double the fixing force of the connecting rod 50. .

On the other hand, the lower end of the shaft portion 52 of the connecting rod 50 is designed to be in contact with or in close proximity to the head 31 of the screw 30 to the abutment due to the loosening of the screw 30 ( 10) can be prevented from flowing arbitrarily.

Thereafter, the impression coping 20 is mounted on the connecting rod 50. The lower portion 24 of the impression coping 20 is formed with a groove (25 in FIG. 2) into which the head 51 of the connecting rod 50 can be inserted. Preferably, the inner surface shape of the groove 25 is formed in a shape corresponding to the head 51 of the connecting rod 50 formed in a polygon. This prevents the impression coping 20 from randomly rotating or flowing in the head 51. Also, at least one protrusion 251 may be formed on an inner surface of the groove 25 of the impression coping 20, and the protrusion 251 may be inserted into an outer circumferential surface of the head 51 of the connecting rod 50. It may be able to assist the fixing force by forming a seating groove 512.

For example, when the connecting rod 50 is formed of a synthetic resin material, the shaft portion 20 of the connecting rod 50 is forcibly fitted into the through hole 14 of the abutment 10, and the impression coping 20 ) Is also fixed in the interference fit method at the top of the connecting rod (50). However, in order to remove only the impression coping 20 during the pulling process, it is preferable to implement the connecting rod 50 so as to have a stronger fixing force fixed to the abutment 10.

In addition, when the connecting rod 50 is formed of a metal material responsive to magnetism, the shaft portion 52 of the connecting rod 50 is forcibly fitted into the through hole 14 of the abutment 10. The magnetic impression coping 20 is fixed in such a manner that it is attached by magnetic force on top of the connecting rod 50. In this case, in order to remove only the impression coping 20 during the impression taking process, it is preferable to implement a fixing force fixed to the abutment 10 to be greater than the magnetic force.

In addition, the head 51 of the connecting rod 50 is a metal material reacting to the magnetic, the shaft portion 52 may be formed of a synthetic resin material and may implement the connecting rod 50 by mutual insert molding.

Meanwhile, the protrusion 241 also protrudes from the lower portion 24 of the impression coping 20. Therefore, when the connecting rod 50 is fixed to the abutment 10, and the impression coping 20 is coupled to the head 51 of the connecting rod 50, the lower portion 24 of the impression coping 20. ) And a lower portion of the head 51 of the connecting rod 50 are in contact with each other to share the upper surface 15 of the abutment 10. At this time, the outer circumferential surface of the lower portion 24 of the impression coping 20 and the outer circumferential surface of the upper portion 12 of the abutment 10 are fixed in a manner that is extremely consistent. Accordingly, the protrusion 241 of the impression coping 20 and the protrusion 511 of the connecting rod 50 are simultaneously engaged with the groove 16 formed on the upper surface 15 of the abutment 10 and flow and It can prevent its own rotation.

Apparently, there are many different ways to modify these embodiments while remaining within the scope of the claims. In other words, there may be many other ways in which the invention may be practiced without departing from the scope of the following claims.

10: abutment 20: abutment
30: screw 40: fixture
50: connecting rod

Claims (13)

In the multi-abutment device for implant treatment,
Fixtures fixed to the alveolar bones of the patient;
An abutment fixed by a predetermined screw inserted into a through hole formed in a longitudinal direction at the center of the upper portion of the fixture;
A connecting rod installed to be inserted into and fixed to a through hole of the abutment; And
Including impression impression coping fixed to the upper portion of the connecting rod,
The connecting rod,
A shaft portion having a predetermined diameter and length and inserted into and fixed to the through hole of the abutment;
It is formed integrally with the shaft portion and includes a head having a larger cross section than the shaft portion,
The connecting rod is fixed to the through-hole of the abutment in a clamping manner, the impression coping is fixed in such a way that the head is inserted from the bottom of the impression coping,
Since the abutment is coupled to a connecting rod provided separately, the abutment device may be freely formed in size and shape so that the abutment can be simultaneously utilized as a healing abutment and an impression prosthesis. delete The method of claim 1,
The head is formed with at least one protrusion extending in the downward direction, the upper surface of the abutment is formed correspondingly to the groove on which the protrusion is seated is seated to prevent the self-rotation and flow of the connecting rod Multi Abutment Device.
The method of claim 3, wherein
The shaft portion is formed with at least one tension protrusion protruding along the outer circumferential surface, the inner circumferential surface of the opening of the abutment forms a seating groove in which the tension protrusion can be seated to assist the fixing force Device.
The method of claim 1,
The head of the connecting rod is formed in a polygon, and the head insertion portion of the impression coping is formed in a corresponding shape to prevent the self-rotation and flow of the impression coping.
The method of claim 3, wherein
The impression coping has at least one protrusion protruding downward, so that the projection of the impression coping and the protrusion of the connecting rod are simultaneously seated in the groove formed on the upper surface of the abutment.
The method according to claim 6,
And the lower outer circumferential surface of the impression coping is coupled to coincide with the upper outer circumferential surface of the abutment.
The method of claim 4, wherein
The connecting rod is a multi abutment device, characterized in that formed of a synthetic resin material.
The method of claim 4, wherein
The connecting rod is formed of a metal material reacting to the magnetic multi-abutment device, characterized in that the fixed by the magnetic force and the impression coping is formed to show the magnetic.
The method of claim 4, wherein
The connecting rod is a multi-abutment device, characterized in that the head of the metal material in response to the magnetic is formed by insert molding the shaft portion of the synthetic resin material.
The method according to any one of claims 8 to 9,
And a fixing force fixed to the abutment of the connecting rod is greater than a fixing force to which the impression coping is fixed to the connecting rod.
The method of claim 4, wherein
When the connecting rod is coupled to the abutment, the multi-abutment device characterized in that the bottom surface of the shaft portion is formed to have a length in contact with or close to the upper surface of the screw pre-fastened in the abutment.
The method of claim 1,
The abutment is a multi-abutment device, characterized in that it is used for healing abutment or induce natural gum formation before using the abutment (customized abument) only for the patient.

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