JP2002153493A - Dental implant having structure for removing upper structure and tool for removal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove an upper structure without exerting large force on an implant body in spite of setting of an abutment and the upper structure by using cement having high setting power. SOLUTION: A hole 11 is imparted to the abutment 10 of the dental implant. The removal of the upper structure set by using the cement is carried out by fitting the jig 21 for removal to the hole 11 through a window 31 of the upper structure and generating shearing force between the abutment and the upper structure by rotating the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for removing an upper structure and a structure for easily removing the upper structure of the dental implant during regular maintenance of the dental implant and the like. For jigs.

[0002]

2. Description of the Related Art Dental implants require their superstructure to be attached and detached during regular maintenance.
Conventionally, in order to make this possible, a method of fixing the upper structure to the abutment of the dental implant using a fixing screw and a method of fixing the upper structure using a temporary cement for dental use having a weak bonding force are used. Is temporarily attached to the abutment.

[0003]

Among the conventional methods of fixing a superstructure, in the method using a fixing screw, a slight dimensional deviation between the upper structure and the abutment causes a loosening of the fixing screw or the like. There was a problem that malfunction was easily caused. In order to compensate for this drawback, a method of fixing the upper structure using temporary cement is also used, but since temporary attachment and detachment of the upper structure is premised, temporary cement with weak coalescence force must be used. In this method, there is a problem that the upper structure may be detached at an unexpected time due to insufficient bonding force.

The present invention provides a structure for removing a superstructure and a structure for removing the superstructure so that the superstructure can be easily attached and detached even when a strong dental cement is used for fixing the superstructure. The purpose is to obtain a jig.

[0005]

In order to achieve the above object, in the structure for removing a superstructure according to the present invention, a hole is formed in the surface of an abutment of a dental implant, and a hole is inserted into the hole. By using a removal jig having a cutting tip, a shear stress is generated between the abutment and the upper structure, and the upper structure is removed from the abutment.

[0006] By using the removal structure and the removal jig, it is possible to remove the upper structure without applying great force to the implant body. Large luting cements can be used. Therefore, it is possible to prevent accidental detachment of the upper structure, which is a problem in the case where the temporary cement is used.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. In the embodiment shown in FIG. 1, a hole 11 is provided on the surface of the abutment 10. The upper structure 30 is provided with a window 31 at a position corresponding to the hole 11. FIG. 1 shows a state where the upper structure 30 is cemented to the abutment 10. When removing the upper structure, the hole insertion tip 21 of the removal jig 20 is fitted into the hole 11, and the handle 22 is rotated. As a result, the cam 23 of the removal jig 20 inserted into the window 31 of the upper structure 30
A force is generated that pushes up in the desorption direction. This force acts as a shearing force between the abutment 10 and the superstructure 30 and can remove the superstructure.

In the embodiment shown in FIG. 5, when removing the upper structure, the hole insertion tip 61 of the removal jig 60 is fitted into the hole 11, and the upper structure 30 is pushed up by the upper structure pushing-up tip 62. Is pushed up in the desorption direction. This force acts as a shearing force between the abutment 10 and the superstructure 30, and can remove the superstructure.

[0009] Except when the upper structure is removed, the hole 11 is filled with an elastic material, and the window 31 is closed with a luting cement used for bonding the upper structure 30.

The window 31 of the superstructure 30 may be closed with a dental filling material.

The present invention can also be applied to a superstructure that connects a plurality of implants, such as a bone anchor card bridge.

[0012]

Since the present invention is configured as described above, it has the following effects.

The use of the removal structure and the removal jig makes it possible to remove the upper structure without applying a large force to the implant body 40. Large luting cements can be used. Therefore, it is possible to prevent accidental detachment of the upper structure, which is a problem in the case where the temporary cement is used.

In the method of temporarily attaching the upper structure using cement, since the cement layer has the effect of correcting the dimensional error of the upper structure, a very high dimensional accuracy is required for manufacturing the upper structure. This is a method that can be used more easily and clinically than a method using a screw. However, in the method of temporarily attaching the upper structure, conventionally, the detachment of the upper structure due to the low bonding force of the temporary cement, or the upper structure when unexpected bonding force is exerted more unexpectedly The difficulty in removing objects was a major problem.

Since it is possible to avoid applying an excessive force to the implant body when removing the superstructure, it is possible to avoid damaging the implant body and bone when removing the superstructure. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a superstructure and a removal jig attached to an abutment of an implant.

FIG. 2 is a side view showing an embodiment of an implant abutment device and a superstructure.

FIG. 3 is a longitudinal sectional view showing an embodiment of an implant abutment device, an upper structure, and a removal jig.

FIG. 4 is a perspective view showing an embodiment of the removed upper structure, abutment and implant body.

FIG. 5 is a perspective view showing an embodiment of a removal jig having a hole insertion tip and an upper structure pushing up tip.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Abutment 11 Hole 20, 60 Removal jig 21, 61 Hole insertion tip 22 Handle 23 Cam 30 Upper structure 31 Upper structure window 40 Implant body 50 Removed upper structure 62 Upper structure pushing-up tip

Claims (4)

[Claims] A jig for removing an upper structure is provided on the surface of an abutment so that the upper structure can be easily removed from the abutment to which the upper structure is attached. A dental implant having a hole (11) for fitting. 2. The dental implant according to claim 1, wherein the implant body and the abutment are integrated. 3. A tip (21) for inserting a hole (11) which can enter through a window (31) of the upper structure (30) and can be inserted into the hole (11). 30) A removal jig provided with a cam (23) having a structure capable of lifting the same. 4. A removal jig having a tip (61) for inserting a hole and a tip (62) for pushing up the upper structure, which can be inserted through the window (31) of the upper structure (30) and inserted into the hole (11). .