JPS63135161A - Bone cutting drill or bone shaving cutter for contra-head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting member for a contrahead, and more specifically, a bone cutting drill or a bone cutting cutter for a contrahead that is optimal for use in drilling grooves for implant material placement. Regarding.

[Background of the invention] Conventionally, as a dental implant material,
As shown in Japanese Patent Publication No. 6044, round rod-shaped implant materials such as those with a spherical mu part at the tooth root or those with a male screw part, and Blade type implant materials as shown in FIG. 20 and FIG. 3 of the accompanying drawings are known.

However, in order to implant these implant materials, it is necessary to form a hole or groove of an appropriate depth in the patient's alveolar bone (i-bone). , it was necessary to drill a slit-like groove in the alveolar bone (jawbone), which caused the following problems.

In other words, it is possible to drill a slit-like groove in the alveolar bone (jawbone) that matches the depth of the tooth root of the implant material using a cutting member (bone cutting drill or bone cutting cutter) attached to the contrahead. It was a difficult task for the first time in 8 years, requiring great skill and long hours. If you try to quickly form a groove for implant material out of consideration for the patient, the alveolar bone (jawbone) will not be cooled enough, causing problems due to overheating. do.

Even if you try to slowly form the implant material, if the alveolar bone (jawbone) is small and the working space is narrow due to the presence of adjacent teeth, it may not be possible to form a slit-like groove that matches the depth of the tooth root of the implant material. It was technically extremely difficult.

In this regard, Japanese Patent Application Laid-Open No. 60-241433 discloses a technique in which up to three bone cutting drills are arranged in parallel to drill a slot for implant material in a single cutting operation. However, as mentioned above, the protein tissue solidifies when the temperature reaches 50-52°C, so to avoid reaching such a temperature, three bone-cutting drills were used at a time while rotating at low speed and spraying cooling water. It was practically impossible to rotate the implant material to form a slit-like groove that matched the depth of the tooth root (see FIG. 4 of JP-A-60-241433).

Therefore, the present inventor has developed a method for drilling a groove for implant material and a guide for forming groove for implant material, which can safely and accurately form a hole or groove suitable for the implant material in the alveolar bone (jawbone). .

This was first proposed in Japanese Patent Application No. 1983-283989.

The method of drilling a groove for implant material according to the above proposal is to drill pin holes at both ends of the implantation position of a blade-type implant material having a tooth root of a predetermined width, and temporarily insert lock pins into both holes. The cutting member of the contrahead is moved from one pin side to the other pin side along the guide member provided between both pins to form the majority of the implant material implantation groove. This technology is characterized by:

In addition, the implant material implantation groove forming guide according to the above-mentioned proposal includes a lock pin temporarily fixed to a pin hole drilled at both ends of the implantation position of a blade type implant material having a root portion of a predetermined width, and This technology is characterized by comprising a guide member that is provided between the mouth and the pin and serves as a guide when moving the cutting member of the contrahead from one bottle side to the other bottle side.

[Object of the Invention] The object of the present invention is to provide a contrahead bone cutting drill or bone cutting cutter that can easily form a hole or groove that matches the implantation depth of the implant material in the previously proposed technology. .

[Means for Solving the Problems] As a result of intensive studies to achieve the above object, the inventors have arrived at the present invention.

That is, the contrahead bone cutting drill or bone cutting cutter 2 of the present invention which achieves the above object is characterized in that marks 5 and 5' indicating the cutting depth are attached to the bone cutting part 1 4 or the rotating body 3. shall be.

In a preferred embodiment of the present invention, ■ the mark is “blue” and “yellow”
, a plurality of color marks 5A such as "red".

Consisting of 5B and 5C, ■Color mark 5A, 58.5
C is drawn on the groove or wound with enamel, etc., and ■ the mark is a number 5' representing the length of the first part of the osteotomy.

[Operation] According to the present invention, the depth of a hole or groove in bone cutting work can be determined safely and accurately by using the mark attached to the bone cutting drill or bone cutting cutter attached to the contrahead as a guide. A hole or groove can be formed in the alveolar bone (jawbone).

The technology for marking cutting parts is disclosed in Japanese Patent Application Laid-Open No. 56-68.
No. 445, No. 57-81339, Utility Model Publication No. 55-512
No. 27, No. 57-57816, No. 60-73511, etc., but these cutting members are not suitable for bone cutting.

[Example] Hereinafter, the present invention will be explained in detail based on the accompanying drawings.

Fig. 1 is a front view showing an example of the present invention, Fig. 2 is a perspective view of an alveolar bone (jawbone) with a slit-shaped groove drilled therein, and Fig. 3 is a longitudinal cross-section of an implant material placed in the slit-shaped groove. side view,
FIG. 4 is a sectional view showing an example of a guide suitable for applying the contrahead bone cutting drill or bone cutting cutter of the present invention.

1 is a contra head; 2 is a bone cutting drill or a bone cutting cutter attached to the contra head l, and a bone cutting portion 4 is formed at the tip of a rotary body 3; 5.5'' is a mark attached to the bone cutting portion 4 or rotary body 3 of the bone cutting drill or bone cutting cutter 2.

The marks 5 according to the present invention include "blue", "yellow", and "red".
A plurality of colored marks 5A, 58.5G such as 5A, 58.5G are preferable, and the colored marks 5A, 5B, 5C are preferably drawn with enamel or the like on grooves or scratches.
A number indicating cutting depth (1) is placed next to G.

You may also draw

The mark 5' according to the present invention is preferably a number representing the length of the bone incision 4, and the number 5' is also preferably drawn with enamel or the like on the stamp.

Next, a method of drilling a groove for implant material using the contrahead bone cutting drill or bone cutting cutter of the present invention will be described.

First, the gingiva is incised, and a hole 6 is made in the alveolar bone (jawbone) B at one end (for example, the side farthest from the front teeth) of the implant material. For the hole 6, select a bone cutting drill or a bone cutting cutter 2 having a bone cutting part 4 with a length corresponding to the depth of implant material insertion by looking at the mark 5', and use a contrahera 1ζl.
The hole may be drilled with the boundary between the bone incision 4 and the constriction 3' being on the surface of the alveolar bone B.

Next, cutting is continued from the hole 6 toward the other end 7 (for example, the side closer to the front teeth) using the bone incision section 4 (drill, etc.) of the Contrahedra so that a slit groove 8 of the same depth is formed. During this cutting, the boundary between the bone incision 4 and the constriction 3' should be placed on the surface of the alveolar bone (jawbone) B as a guide.During cutting, use the conventional bone cutting drill or bone cutting cutter 2. Cooling water is poured around the groove 8 along with the cutting debris.
flows out from When this cutting is completed, a finished slit-like groove 8 as shown in FIG. 2 is obtained.

In addition, in order to check whether the y18 is the desired length, width, depth, etc., the desired length,
A metal plate (for example, made of titanium) having a width and depth may be attached, and confirmation may be made by taking an X-Ray photograph.

Once the desired slit-like groove 8 has been drilled, a blade-shaped implant material 9 is implanted. As shown in FIG. is implanted in close contact with the alveolar bone (jawbone). At this time, the two wooden supports 11.11 that protrude upward from the tooth root lO protrude upward from the gingiva according to the intended dimensions. The slit-like groove 8 is filled in as before,
The gums are sutured and a superstructure (not shown) such as a crown or bridge is attached to the protrusion 11.11.

The contrahead bone cutting drill or bone cutting cutter of the present invention is not limited to the above-mentioned usage method, but can also be used by using the "implant material planting groove forming guide" disclosed in Japanese Patent Application No. 61-283989 by the present inventor. An example of the guide of this prior invention, which is most preferably used for forming the slit-like groove 8, is shown in FIG. That is, in FIG.

12.12' is a pair of lock bins made of, for example, titanium alloy, and 13 is the pair of lock bins 12.1.
This is a guide member temporarily fixed between 2'.

The guide member 13 can be temporarily fixed between the lock pins 12, 12' by any means. A through hole (or notch) through which the adjustment ring 14.1 can be inserted is bored, and the adjustment ring 14.
4', and attach the ring stop bar Is, 15' above.
The guide member 13 may be fixed at the desired height by screwing them together and sandwiching the guide member 13 between them 14 and 15 and 14' and 15'.

A guide slit 16 is formed along the center of the guide member 13, into which a bone cutting drill or a bone cutting cutter 2 of a contrahead l can be inserted. Note that G indicates a gap.

In the case of implementing the prior invention using a guide, when drilling a hole for the guide bin 12, 12' (the above-mentioned mark 5' may be used) and when cutting a slit-like groove along the guide slit 15 ( The mark 5.5 of the present invention can be used for both cutting (the method shown below) and when removing and communicating the slit-like groove with the hole (the mark 5' may be used).
' can be used effectively.

That is, when cutting a slit-like groove, for example, one selected mark 5A, 5B,
It is sufficient to cut along the guide slit 16 so that one of the slits 5C is positioned.

Furthermore, the present invention can be effectively used when cutting using the conventional techniques described in the Background of the Invention.

[Effects of the Invention] According to the present invention, a hole or slit-like groove can be safely and accurately formed in the alveolar bone (jawbone).

It is also conceivable to use a single mark 5 and a stopper (such as a bulge) that cannot pass through the guide slit 16, but in this case it is necessary to prepare a large number of bone cutting drills or bone cutting cutters 2.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of the present invention, Fig. 2 is a perspective view of an alveolar bone (jawbone) with a slit-shaped groove drilled therein, and Fig. 3 is a longitudinal cross-section of an implant material placed in the slit-shaped groove. side view,
FIG. 4 is a sectional view showing an example of a guide suitable for applying the contrahead bone cutting drill or bone cutting cutter of the present invention. l: Contra head 2: Bone cutting drill or bone cutting cutter 3: Rotating body 3': Neck part 4: Bone cutting circle part 5: Mark SA, 58.5G: Color mark B Bi-alveolar bone (jaw bone)

Claims (4)

[Claims] (1) A contrahead cutting member, wherein the contrahead cutting member is a bone cutting drill or bone cutting cutter used for drilling a groove for implant material,
A bone cutting drill or a bone cutting cutter for a contra head, characterized in that a mark indicating the cutting depth is attached to the bone cutting part or the rotating body. (2) The contrahead bone cutting drill or bone cutting cutter according to claim 1, wherein the mark is composed of a plurality of colored marks such as "blue", "yellow", and "red". (3) The contrahead bone cutting drill or bone cutting cutter according to claim 2, wherein the colored marks are drawn with enamel or the like on the grooves or scratches. (4) The contrahead bone cutting drill or bone cutting cutter according to claim 1, wherein the mark is a number representing the length of the bone cutting part.