JP2001299777A - Jig for dental implant investment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for dental implant investment which does not damage nor deform a polygonal projecting section positioned on the inner side of a screw type implant fixture in the oval cavity of a patient at the time of burying the fixture in a burying-in hole formed into the jawbone of the missing tooth portion of the patient in the course of dental implant treatment. SOLUTION: On this jig 2 for dental implant investment which is used for burying the screw type implant fixture 1 having a screw 1a on the outer peripheral surface of its part buried in the burying-in hole formed into the jawbone of the mixing tooth portion of the patient in the burying-in hole, a recessed removed section B is formed in the whole portion corresponding to the corner section of a polygonal recessed section engaged with the polygonal projecting section 1c provided on the inside of the implant fixture 1 in the oval cavity of the patient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for implanting a screw-type implant fixture into an implant hole formed in a jawbone of a missing tooth when performing dental implant treatment. The present invention relates to a dental implant embedding jig that does not damage or deform a polygonal convex portion provided in a portion located inside an oral cavity.

[0002]

2. Description of the Related Art Conventionally, as a dental prosthesis method for a missing tooth part, a method using a bridge and a method using a denture have been generally performed. However, the bridge method cuts healthy natural teeth on both sides of a missing tooth to form an abutment, and fixes a dental prosthesis located at the missing tooth between metal bodies engaged and fixed to the abutment. In order to form an abutment, not only must healthy natural teeth be cut, but also because the occlusal pressure is not directly applied to the dental prosthesis located at the missing teeth There is a disadvantage that bone resorption is caused at the site. The method using a denture is a method in which a denture fixed to a denture base made of a synthetic resin or the like is used as a dental prosthesis. In this method, the occlusal force acting on the dental prosthesis is determined by the denture. The dental prosthesis may be uncomfortable during use of the dental prosthesis or the denture base may cover taste receptors scattered in the oral mucosal tissue because the dental prosthesis is burdened by the remaining natural teeth and / or oral mucosa adjacent to the dental prosthesis This has the serious disadvantage that dull taste may occur and that prolonged use may cause resorption of the ridge.

[0003] As a treatment method for solving these drawbacks, an implant fixture as a device for maintaining and stabilizing a dental prosthesis is inserted into an insertion hole formed in a jawbone of a missing tooth portion, and the root of a natural tooth is implanted. Function of the dental prosthesis, and a dental prosthesis fixing device is fixed to the abutment fixed inside the oral cavity of the implant fixture to form a dental prosthesis maintenance device. Techniques for dental implants for anchoring prostheses have been developed and are being implemented.

[0004] When a treatment method using such a dental implant is carried out, the dental prosthesis can be fixed without covering the oral mucosa, so that unpleasant sensation and dull taste when the dental prosthesis is mounted do not occur. This has the advantage of providing a feeling of use similar to that of natural teeth, and the ability to moderate occlusal force to the jawbone, thereby minimizing bone resorption expected when no implant fixture is implanted. For this reason, this treatment method has been rapidly developed and can be applied not only to a single tooth defect, a local defect of two or more teeth, but also to an edentulous (total tooth defect).

[0005] As a treatment method using this dental implant, an implant fixture inserted into an insertion hole formed in the jaw bone of the missing tooth portion is sufficiently bonded to the jaw bone of the missing tooth portion, and the implantation hole is removed. When the operative part due to the formation is healed, the gingival part inside the oral cavity in which the implant fixture has been implanted is re-opened, and the abutment serving as an attachment part of the fixing device for the dental prosthesis is provided in the oral cavity part of the implant fixture. The two-time method of fixing the element is mainly employed. The abutment has a shape that is fixed so as not to rotate with respect to the implant fixture, and furthermore, a fixing device for a dental prosthesis attached to the inner side of the oral cavity is a fixing device for a single tooth. In some cases, the dental prosthesis may not be positioned correctly on the missing teeth if the fixation device is rotated relative to the implant fixture. This is also provided in the oral cavity of the abutment where the device for fixing a dental prosthesis is mounted.

[0006] In such a treatment method using a dental implant, a treatment must first be performed in which an implant fixture is inserted into an insertion hole formed in the jawbone of a missing tooth portion. In recent years, screw-type implant fixtures in which a screw is formed on the outer peripheral surface to be inserted into an insertion hole formed in the jaw bone of the missing tooth have come to be widely used in recent years, and such a screw has been used. In the treatment to insert the type implant fixture into the insertion hole formed in the jawbone of the missing tooth, a female screw is formed using a tap after drilling a hole of a predetermined diameter in the jawbone of the missing tooth Screw-type implant fixture into the screw hole and insert the screw-type implant fixture. After drilling a hole of a predetermined diameter in the jawbone of the missing tooth part in the case of the futap type, without forming a female screw by tapping, directly insert a screw type implant fixture and insert it while forming a female screw in the hole There is a way to do it.

In any of these methods, it is necessary to insert the screw-type implant fixture into a hole formed in the jawbone of the missing tooth while rotating the screw-type implant fixture around its axial direction. For the operation, a dental implant embedding jig that engages with a polygonal convex portion formed in a portion located inside the oral cavity of the screw-type implant fixture is used. The jig for implanting a dental implant includes a single member that directly engages with a polygonal projection formed on a portion of the screw-type implant fixture located inside the oral cavity. Screw-type implant fixture An intermediate jig engaging with a polygonal convex portion formed in a portion located inside the oral cavity, and a male screw portion screwed into a female screw portion screwed along a long axis of the screw type implant fixture. An intermediate jig fixing screw for fixing the lever jig to the screw-type implant fixture, and the intermediate jig fixed to the intermediate jig fixing screw on the opposite side to the implant fixture, thereby fixing the intermediate jig. There is a type that consists of multiple members that rotate, and transmits rotational torque to these jigs for placing dental implants. The order of means, were present and the case is due to motor for a dental implant case manual.

As described above, when the screw-type implant fixture is inserted into the insertion hole formed in the jawbone of the missing tooth by the dental implant-inserting jig, the screw-type implant fixture is self-tapping. In this case, a large rotational torque is required, and this rotational torque is formed by a polygonal convex portion formed on a portion located inside the oral cavity of the screw-type implant fixture, which engages with the polygonal concave portion of the dental implant insertion jig. The screw-type implant fixture is inserted into the insertion hole formed in the jawbone of the missing tooth using a conventional dental implant insertion jig. Phenomenon that the corners of the polygonal convex part formed in the part located inside the oral cavity of the implant fixture are damaged or deformed It may occur.

However, in the dental implant treatment, as described above, the implant fixture embedded in the implant hole formed in the jaw bone of the missing tooth part has sufficiently bonded to the jaw bone and formed the implant hole. After the surgical part has been healed, the gingival part inside the oral cavity in which the implant fixture has been implanted is re-opened, and the abutment that is the mounting part of the fixing device for the dental prosthesis is fixed to the inner part of the oral cavity of the implant fixture The abutment is a polygon that engages with a polygonal protrusion formed on a portion located inside the oral cavity of the implant fixture so that the abutment does not rotate with respect to the implant fixture. A recess is formed and the abutment extends through the abutment and The abutment screw is fixed to the implant fixture by the abutment screw screwed into the screw hole formed in the center of the oral cavity of the fixture. The polygonal convex portion formed on the portion of the implant fixture located inside the oral cavity bears the effect of preventing the abutment from rotating with the rotational torque acting upon screwing. Then, a female screw provided on the abutment screw is provided with a dental prosthesis formed on the outer periphery of the gold cinder by arranging a dental prosthesis inside the oral cavity of the abutment and passing the gold screw through a through hole passing through the gold cinder. The gold screw is screwed into the female screw provided on the abutment screw, and the rotation torque acting when the gold screw is screwed into the female screw is also located inside the oral cavity of the implant fixture. The polygonal convex part formed in the part will take charge.

Therefore, when the screw-type implant fixture is inserted into the insertion hole formed in the jawbone of the missing tooth by the dental implant-inserting jig, a portion of the screw-type implant fixture located inside the oral cavity. If the corners of the polygonal projections formed in the above are damaged or deformed, the screw-type implant fixture in which the corners of the polygonal projections are damaged or deformed will create an abutment,
As a result, the dental prosthesis cannot be fixed in a predetermined direction.

[0011]

SUMMARY OF THE INVENTION As described above, the present invention works when a screw-type implant fixture is inserted into an insertion hole formed in a jawbone of a missing tooth by a dental implant insertion jig as described above. The corners of the polygonal projections formed in the portion of the screw-type implant fixture located inside the oral cavity due to rotational torque are damaged.
An object of the present invention is to provide a dental implant embedding jig which does not cause a deformation phenomenon.

[0012]

Means for Solving the Problems The present inventor has conducted intensive studies to solve the above-mentioned problems, and as a result, the polygonal concave portion formed in the jig for implanting a dental implant is located inside the oral cavity of the screw type implant fixture. Since the screw-shaped implant fixture must be engaged with the polygonal projection formed on the portion to be formed, it is slightly larger than the polygonal projection formed on the portion located inside the oral cavity of the screw-type implant fixture. When the dental implant insertion jig is rotated, a polygonal concave portion that engages with the polygonal convex portion formed in the portion located inside the oral cavity of the screw type implant fixture is formed inside the oral cavity of the screw type implant fixture. The screw-type implant fixture is formed by play between the polygonal convex portion formed on the located portion. -The shape is such that the rotational torque is concentrated on the corners of the polygonal projections formed in the portion located inside the oral cavity of the screw-type implant fixture. Investigation that the corners of the polygonal projections were damaged or deformed, and implanted dental implants that engage with the polygonal projections formed in the portion of the screw-type implant fixture located inside the oral cavity The polygonal concave part of the insertion jig is formed in the part located inside the oral cavity of the screw-type implant fixture. The polygonal planar parts parallel to the central axis of the screw-type implant fixture of the polygonal convex part contact each other. Thus, the present invention has been completed in which it has been found that it is sufficient to transmit the rotational torque only after the state is reached.

That is, the present invention provides a screw-type implant fixture in which a screw is provided on the outer peripheral surface of a portion to be inserted into an insertion hole formed in a jaw bone of a missing tooth portion. A jig for embedding a dental implant for embedding in an embedding hole formed in a screw-type implant fixture, wherein the jig engages with a polygonal convex portion provided in a portion located inside the oral cavity of a screw-type implant fixture. A dental implant embedding jig, characterized in that a concave removal portion is formed in a portion corresponding to a corner of a rectangular recess.

In the case where the polygonal concave portion is a regular hexagonal concave portion corresponding to the polygonal convex portion provided in the portion located inside the oral cavity of the screw type implant fixture, the length of the regular hexagonal side is set to 10 A removal part is formed in all parts corresponding to the corners of the polygonal concave part so as to reduce by ~ 60%, or a screw-type implant fixture is inserted into an insertion hole formed in the jaw bone of the missing tooth part. When the screw-type implant fixture is used, the length of the regular hexagon is 5 to 30 on only one of the sides of the regular hexagon on which the rotational torque is applied to the polygonal convex portion provided on the portion located inside the oral cavity. When the concave removal portions are all formed in the portions corresponding to the corners of the polygonal concave portion so as to reduce the percentage, the screw-shaped implant fixture is formed in the portion located inside the oral cavity. And that damage to the corners of the polygonal convex portion,
A single unit provided with a polygonal concave portion which can effectively prevent deformation and in which the dental implant insertion jig is directly engaged with a polygonal convex portion provided on a portion of the screw type implant fixture located inside the oral cavity. A cylindrical part having a polygonal concave portion that engages with a polygonal convex portion provided in a portion of the screw-type implant fixture located inside the oral cavity as well as a case where the jig for dental implant implantation is formed of a member. An intermediate jig comprising a polygonal convex portion provided on the side opposite to the polygonal concave portion of the cylindrical portion and having a through hole formed over the entire length thereof; and a through hole of the intermediate jig and a screw type. An external thread is inserted into the female thread that is threaded along the long axis of the screw-type implant fixture through the polygonal projection provided on the part located inside the oral cavity of the implant fixture. An intermediate jig fixing screw for fixing the intermediate jig to the screw-type implant fixture, and an embedding jig main body having a polygonal concave portion at one end engaging with the polygonal convex portion of the intermediate jig. They have also determined that it may be composed of a plurality of members.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a dental implant embedding jig according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows a state in which a polygonal convex portion provided on a portion located inside the oral cavity of a screw type implant fixture is engaged with a polygonal concave portion of a jig for implanting a dental implant comprising a single member according to the present invention. 2 is a front view showing the right half of the embodiment of the present invention in a cross section, FIG. 2 is a bottom view of the dental implant embedding jig shown in FIG. 1, and FIG. 3 is a dental implant embedding comprising a plurality of members according to the present invention. FIG. 4 is a cross-sectional front view of the right half of the embodiment in which a polygonal convex portion provided on a portion located inside the oral cavity of the screw-type implant fixture is engaged with the polygonal concave portion of the jig. Is a front view showing a part of an example of the screw-type implant fixture in cross section, FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a jig for implanting a dental implant according to the present invention shown in FIG. Of one embodiment of the intermediate jig FIG. 7 is a plan view of FIG. 6, FIG. 8 is a bottom view of FIG. 6, and FIG. 9 is an intermediate part of the jig for implanting a dental implant according to the present invention shown in FIG. FIG. 10 is a front view of one embodiment of the jig fixing screw, FIG. 10 is a plan view of FIG. 9, and FIG. 11 is an embedding jig main body constituting the dental implant embedding jig according to the present invention shown in FIG. FIG. 12 is a front view showing the right half of the embodiment in cross section, and FIG. 12 is a bottom view of FIG.

In the drawings, reference numeral 1 denotes a screw-type implant fixture in which a screw 1a is provided on an outer peripheral surface of a portion to be inserted into an insertion hole formed in a jawbone of a missing tooth portion, and the oral cavity thereof is provided. A polygonal convex portion (hexagonal convex portion in the illustrated embodiment) 1c with which an abutment (not shown) for fixing the fixing device of the dental prosthesis is provided in a portion located inside. A female screw portion 1b into which an abutment screw (not shown) for fixing an abutment along a long axis thereof through a polygonal convex portion 1c provided in a portion located inside the oral cavity is screwed. Is screwed. Since the illustrated screw-type implant fixture 1 is a self-tapping type, a tapping cutting blade portion 1d is provided at an end opposite to the end at which the polygonal convex portion 1c is provided. .

Reference numeral 2 denotes a jig for implanting a dental implant according to the present invention, which may be a single member as shown in FIG. 1 or a plurality of members as shown in FIG.

As shown in FIGS. 1 and 2, a dental implant embedding jig 2 according to the present invention, which is made of a single member, is located inside an oral cavity of a screw type implant fixture 1 provided at one end. A concave removal portion B is formed at a portion corresponding to the corner of the polygonal concave portion A which engages with the polygonal convex portion 1c provided at the portion to be formed. At the other end, a prismatic portion that can be gripped by a wrench or a grip handle 2a that conforms to the standard of a dental bar to be gripped by a dental implant motor so that rotational torque can be transmitted (in the illustrated embodiment, gripped by a wrench) Can be shown. When the polygonal concave portion A is a regular hexagonal concave portion corresponding to the polygonal convex portion 1c provided in a portion located inside the oral cavity of the screw-type implant fixture 1, the concave removing portion B has the regular hexagonal shape. The screw-type implant fixture 1 is formed so that the length of the side is reduced by 10 to 60%, or when the screw-type implant fixture 1 is inserted into an insertion hole formed in the jaw bone of the missing tooth. 1 is formed on only one side of the side of the regular hexagon on which the rotational torque is applied to the polygonal convex portion 1c provided on the portion located inside the oral cavity so as to reduce the length of the side of the regular hexagon by 5 to 30%. Is preferred.

As shown in FIG. 3, the dental implant embedding jig 2 according to the present invention, which comprises a plurality of members, comprises an intermediate jig 3, an intermediate jig fixing screw 4, and an embedding jig main body 5. Can be shown, and details of each member will be described below.

Reference numeral 3 denotes a portion corresponding to a corner of a polygonal concave portion A which engages with a polygonal convex portion 1c provided on a portion of the screw type implant fixture 1 provided at one end portion located inside the oral cavity. It has a cylindrical portion 3a in which all the concave removing portions B are formed, and a polygonal convex portion 3b provided on the opposite side of the polygonal concave portion A of the cylindrical portion 3a. This is an intermediate jig on which 3c is formed. In the illustrated embodiment, a concave portion is formed on the opposite side of the polygonal concave portion A of the polygonal convex portion 3b to prevent the polygonal convex portion 3b from falling off when gripped with tweezers or the like, and the through hole 3c is described later. After the male screw portion 4a of the intermediate jig fixing screw 4 is screwed, a female screw portion is provided so that the male screw portion 4a can penetrate to the polygonal concave portion A side. When the polygonal concave portion A is a regular hexagonal concave portion corresponding to the polygonal convex portion 1c provided in a portion located inside the oral cavity of the screw-type implant fixture 1, the concave removing portion B has the regular hexagonal shape. The screw-type implant fixture 1 is formed so that the length of the side is reduced by 10 to 60%, or when the screw-type implant fixture 1 is inserted into an insertion hole formed in the jaw bone of the missing tooth. 1 is formed on only one side of the side of the regular hexagon on which the rotational torque is applied to the polygonal convex portion 1c provided on the portion located inside the oral cavity so as to reduce the length of the side of the regular hexagon by 5 to 30%. Is preferred.

Reference numeral 4 denotes a long axis of the screw type implant fixture 1 which penetrates through the through hole 3c of the intermediate jig 3 and the polygonal convex portion 1c provided in the portion of the screw type implant fixture 1 located inside the oral cavity. An intermediate jig fixing screw provided with a head 4b for fixing the intermediate jig 3 to the screw-type implant fixture 1 by screwing the male screw portion 4a to the female screw portion 1b screwed along. The head 4b of the intermediate jig fixing screw 4 is provided with a screwdriver for a minus screwdriver or a plus screwdriver as in the illustrated embodiment so that the intermediate jig fixing screw 4 can be rotated by a screwdriver or the like. And a hexagonal outer shape for a spanner. As described above, when the female screw portion is screwed into the through hole 3c of the intermediate jig 3, the intermediate jig fixing screw 4 is connected to the female screw portion of the intermediate jig 3 after the male screw portion 4a is screwed into the female screw portion. Since the intermediate jig fixing screw 4 and the intermediate jig 3 are not easily separated because they pass through the through holes 3c.

5 is a polygonal convex portion 3b of the intermediate jig 3 at one end.
Has a polygonal concave portion 5a that engages with a rectangular column-shaped portion that can be gripped with a wrench so as to transmit rotational torque to the other end or a grip that conforms to the standard of a dental bar to be gripped by a motor for a dental implant. This is an embedding jig main body in which a handle 5c (a grip handle conforming to the standard of a dental bar to be gripped by a dental implant motor in the illustrated embodiment) is formed.

Such a jig for implanting a dental implant according to the present invention takes into account contamination of the screw-type implant fixture 1. The jig 3 and the intermediate jig fixing screw 4 are preferably made of titanium, which is the same material as the screw type implant fixture 1.

The outer peripheral surface of the portion to be inserted into the insertion hole formed in the jawbone of the missing tooth portion using the dental implant insertion jig 2 according to the present invention comprising the above-described components. The operation of inserting the screw-type implant fixture 1 provided with the screw 1a into the insertion hole formed in the jawbone of the missing tooth will be described below.

When the dental implant jig 2 according to the present invention is composed of a single member as shown in FIGS. 1 and 2, it is provided on a portion of the screw type implant fixture 1 located inside the oral cavity. The polygonal concave portion A formed on the inner surface of the end portion of the dental implant embedding jig 2 is engaged with the polygonal convex portion 1c, and the gripping handle portion 2a at the other end of the dental implant embedding jig 2 is used. The prismatic part is gripped with a spanner and rotated manually, or the gripping handle 2a at the other end of the dental implant placement jig 2 is gripped by a dental implant motor and rotated to rotate the jawbone of the missing tooth. The screw-type implant fixture 1 is inserted into the insertion hole formed therein.

The dental implant embedding jig 2 according to the present invention comprises a plurality of members including an intermediate jig 3, an intermediate jig fixing screw 4, and an embedding jig main body 5 as shown in FIG. If it is present, first, a polygonal convex portion provided on a portion of the screw-type implant fixture 1 located inside the oral cavity
1c is engaged with a polygonal concave portion A formed on the inner surface of the end of the cylindrical portion 3a of the intermediate jig 3, and provided on the opposite side of the polygonal concave portion A of the cylindrical portion 3a of the intermediate jig 3. It passes through a through hole 3c formed over the entire length of the intermediate jig 3 from the polygonal convex portion 3b side and a polygonal convex portion 1c provided in a portion of the screw type implant fixture 1 located inside the oral cavity. The external thread 4a of the intermediate jig fixing screw 4 is attached to the female thread 1b screwed along the long axis of the screw type implant fixture 1.
To fix the intermediate jig 3 to the screw type implant fixture 1. At this time, as described above, when a female screw portion is screwed into the through hole 3c of the intermediate jig 3, the male screw portion 4a of the intermediate jig fixing screw 4 is screwed into the female screw portion, and then the through hole 3c is formed. After passing through, the polygonal projection 1c provided in the portion of the screw type implant fixture 1 located inside the oral cavity is formed on the inner surface of the end of the cylindrical portion 3a of the intermediate jig 3 by the polygonal projection 1c. The square recess A is engaged.

Next, the polygonal concave portion 5a provided at one end of the embedding jig main body 5 is inserted into the polygonal convex portion 3b of the intermediate jig 3.
And manually rotate the gripping portion 5c at the other end of the embedding jig body 5 by gripping it with a spanner or manually rotate the gripping handle at the other end of the embedding jig body 5. The part 5c is gripped and rotated by the dental implant motor, and the screw-type implant fixture 1 is inserted into the insertion hole formed in the jawbone of the missing tooth part.

When the screw-type implant fixture 1 is thus inserted into the insertion hole formed in the jawbone of the missing tooth, the jig 2 for inserting a dental implant according to the present invention uses a screw. Since the polygonal concave portion A that engages with the polygonal convex portion 1c provided inside the oral cavity of the mold-type implant fixture 1 has all the concave removal portions B at the corners thereof, the screw-type implant A polygonal convex portion 1c formed in a portion of the fixture 1 located inside the oral cavity and a dental implant placing jig 2
The polygonal concave portion A is a polygonal convex portion 1c formed in a portion located inside the oral cavity of the screw type implant fixture 1, and the polygonal flat portions parallel to the central axis of the screw type implant fixture 1 are formed. Since the rotational torque is transmitted only after the contact state, the polygonal projection formed on the portion of the screw-type implant fixture 1 located inside the oral cavity when the dental implant embedding jig 2 starts rotating. Since no rotational torque is transmitted to the corners of 1c, the corners of the polygonal projection 1c formed in the portion of the screw-type implant fixture 1 located inside the oral cavity are not damaged or deformed.

[0029]

As described above in detail, the jig for embedding a dental implant according to the present invention can be divided into a method using a bridge and a method using a denture, which are generally used as a conventional dental prosthesis method for a missing tooth part. Instead, when treating dental implants that have been developed and implemented as treatments that overcome the disadvantages of these methods, they are inserted into the insertion holes formed in the jawbone of the missing teeth When performing treatment to insert a screw-type implant fixture with a screw formed on the outer peripheral surface into the insertion hole formed in the jawbone of the missing tooth, it is located inside the oral cavity of the screw-type implant fixture The polygonal convex portion provided on the portion has its corner formed by the rotation torque transmitted through the polygonal concave portion of the dental implant embedding jig engaging with the polygonal convex portion. Since There is not damaged or deformed,
The value of the present invention contributing to the dental field is extremely large, since no phenomena occur that adversely affect the treatment of dental implants thereafter.

When the polygonal concave portion is a regular hexagonal concave portion corresponding to the polygonal convex portion provided in the portion located inside the oral cavity of the screw-type implant fixture, the concave removing portion is formed on the side of the regular hexagonal shape. Length 10-60
% When the screw-type implant fixture is to be inserted into the insertion hole formed in the jawbone of the missing tooth part, or the screw-type implant fixture is provided in the portion located inside the oral cavity. If only one of the sides of the regular hexagon on which the torque is applied to the polygonal convex portion 1c is formed so that the length of the regular hexagon is reduced by 5 to 30%, the oral cavity of the screw-type implant fixture is formed. The above-mentioned that the corners of the polygonal convex portion provided on the inside portion are not damaged by the rotational torque transmitted through the polygonal concave portion of the dental implant embedding jig engaging with the polygonal convex portion. The effect can be expected reliably.

[Brief description of the drawings]

FIG. 1 shows a polygonal concave portion of a single-member dental implant embedding jig according to the present invention, in which a polygonal convex portion provided on a portion located inside the oral cavity of a screw-type implant fixture is engaged. It is the front view which showed the right half of 1 Example of a state by cross section.

2 is a bottom view of the jig for implanting a dental implant shown in FIG. 1. FIG.

FIG. 3 shows a state in which a polygonal convex portion provided on a portion located inside the oral cavity of a screw-type implant fixture is engaged with a polygonal concave portion of a jig for implanting a dental implant comprising a plurality of members according to the present invention. FIG. 2 is a front view showing a right half of one embodiment of FIG.

FIG. 4 shows a screw type implant fixture 1
It is the front view which showed some examples in cross section.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a front view showing a right half of an embodiment of the intermediate jig constituting the jig for implanting a dental implant according to the present invention shown in FIG. 3 in a cross section.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a bottom view of FIG. 6;

FIG. 9 is a front view of one embodiment of an intermediate jig fixing screw constituting the dental implant embedding jig according to the present invention shown in FIG. 3;

FIG. 10 is a plan view of FIG. 9;

11 is a front view showing a cross section of a right half of one embodiment of an embedding jig main body constituting the dental implant embedding jig according to the present invention shown in FIG. 3; FIG.

FIG. 12 is a bottom view of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screw-type implant fixture 1a Screw 1b Female screw part 1c Polygonal convex part 1d Cutting blade part for tapping 2 Dental implant embedding jig according to the present invention 2a Holding handle part 3 Intermediate jig 3a Cylindrical part 3b Polygonal shape Convex part 3c Through hole 4 Intermediate jig fixing screw 4a Male screw part 4b Head 5 Embedding jig body 5a Polygonal concave part 5b Gripping handle part A Polygonal concave part B Concave removal part

Claims (5)

[Claims] 1. A screw-type implant fixture (1) provided with a screw (1a) on an outer peripheral surface of a portion to be embedded in an embedding hole formed in a jaw bone of a missing tooth portion. A jig for inserting a dental implant for being inserted into an insertion hole formed in the jaw bone of the screw type implant fixture (1), which is provided on a portion located inside the oral cavity of the screw type implant fixture (1). A jig (2) for implanting a dental implant, characterized in that all the concave portions (B) corresponding to the corners of the polygonal concave portion (A) engaged with the portion (1c) are formed with concave concave portions (B). . 2. The polygonal concave portion (A) is a regular hexagonal concave portion corresponding to the polygonal convex portion (1c) provided in a portion of the screw type implant fixture (1) located inside the oral cavity, and the regular hexagonal shape is provided. 2. A dental implant embedding according to claim 1, wherein all the concave removing portions (B) are formed in portions corresponding to the corners of the polygonal concave portion (A) so as to reduce the length of the side by 10 to 60%. Jig (2). 3. The polygonal concave portion (A) is a regular hexagonal concave portion corresponding to the polygonal convex portion (1c) provided in a portion located inside the oral cavity of the screw-type implant fixture (1), and the missing tooth portion. When the screw-type implant fixture (1) is to be inserted into the insertion hole formed in the jaw bone, a polygonal convex portion ( 1c) Only one side of the side of the regular hexagon on which the rotational torque is applied is concave on the part corresponding to the corner of the polygonal concave portion (A) so that the length of the side of the regular hexagon is reduced by 5 to 30%. 2. The jig for embedding a dental implant according to claim 1, wherein the removal portion (B) is formed.
(2). 4. A polygonal concave portion (1c) which is directly engaged with a polygonal convex portion (1c) provided on a portion of the screw-type implant fixture (1) located inside the oral cavity. 4. A jig (2) for implanting a dental implant according to claim 1, comprising a single member provided with A). 5. A cylindrical portion (3) formed with a polygonal concave portion (A) which engages with a polygonal convex portion (1c) provided on a portion of the screw type implant fixture (1) located inside the oral cavity.
a) and a polygonal convex portion (3b) provided on the opposite side of the polygonal concave portion (A) of the cylindrical portion (3a), and a through hole (3c) is formed over the entire length thereof. An intermediate jig (3) and the intermediate jig
The screw-type implant fixture (1) passes through the through hole (3c) of (3) and the polygonal projection (1c) provided in the portion located inside the oral cavity of the screw-type implant fixture (1). Female thread (1b) threaded along the long axis
An intermediate jig fixing screw (4) for fixing the intermediate jig (3) to the screw-type implant fixture (1) by screwing a male screw part (4a) to the screw, and an intermediate jig (3) at one end. 4. An embedding jig body (5) having a polygonal concave portion (5a) engaged with the polygonal convex portion (3b).
Item 2. The jig for implanting a dental implant according to item 2.