JPH06125923A - Shaping tool for hole into which artificial root of tooth is embedded - Google Patents

Abstract

PURPOSE:To provide a shaping tool with which a hole can be shaped faithfully following the form of an artificial root of tooth to be embedded. CONSTITUTION:A shaping tool is provided with a number of longitudinal cutter edges 1f, 1i. Since the cutter edges are formed in the longitudinal direction of the shaping tool, they are easy to machine and the number of cutter edges can be increased and thereby the number of contacts to the inner wall of a hole is increased, so the shaping tool can stably cut and shape holes without shaking.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an orthodontic appliance for shaping an artificial root-implantation hole formed in a jaw bone during an artificial root-implantation operation.

[0002]

2. Prior Art and Problems to be Solved by the Invention FIG.
(A), (B) is sectional drawing of a jawbone which shows the state which perforates the embedding hole of an artificial tooth root. Conventionally, as shown in FIG. 4 (A), the jawbone 9 is used for drilling and shaping a hole for burying an artificial tooth root.
A tem plate 10 for positioning is applied to the piercing position of the gingiva 8 on the surface of the above, the piercing position is marked on the dense bone 9a by the drill 6, the gingiva 8 is incised, and the dense bone 9a and the cancellous bone are drilled by the drill 6. 9b was perforated, and then, as shown in FIG. 4 (B), the hole diameter of the embedded hole 4 was enlarged by the reamer 5 and the inner wall of the hole 4 was shaped according to the shape of the artificial tooth root. .

However, the conventional shaping reamer 5 has a slanting blade, and the slanting blade can be formed due to the restriction in manufacturing by machining. The maximum number was four. For this reason,
There are few points of contact between the blade of the reamer 5 and the inner wall of the hole 4 when the reamer 5 is inserted, and when the reamer 5 is rotated to try to shape the inner wall, the reamer 5 wobbles and the inner wall becomes uniform. There was a fear that the hole 4 could not be shaved and the hole 4 could not be shaped faithfully to the shape of the artificial tooth root. If the shape of the hole 4 and the shape of the artificial tooth root do not match, the artificial tooth root may float, or a gap may be formed between the artificial tooth root and the hole 4, resulting in slower healing after surgery or failure of surgery. There was a problem.

In view of the above problems, it is an object of the present invention to provide an orthodontic appliance which can shape a hole faithfully to the shape of an artificial dental root to be embedded.

[0005]

In order to achieve the above object, the present invention relates to an orthodontic appliance which is inserted into an artificial tooth root burial hole formed in a jawbone by a drill to reshape the hole. Is formed vertically.

[0006]

According to the present invention, since the cutter blades are provided vertically as described above, a large number of cutter blades can be taken, and the cutter blade and the inner wall are not separated during the shaping of the inner wall by inserting the shaping tool into the hole. Since there are many contacts, the orthopedic device does not wobble.

[0007]

1 (A) is a perspective view of an embodiment of a shaping tool according to the present invention, FIG. 1 (B) is a sectional view taken along line EE of FIG. 1 (A), and FIG. 1 (C) is FIG. 1 (A). FIG. 8 is a sectional view taken along line FF of FIG. Figure 1 (A)
As shown in FIG. 1, the shaping tool 1 is made by processing a metal material such as SK material or stainless steel, and a constricted portion 1b is formed on the tip portion 1a of a cylindrical body, and a taper is formed on the constricted portion 1b. The portion 1c is formed, and the groove 1d is formed on the portion 1c in the circumferential direction. The tip portion 1a and the taper portion 1c are shown in FIG.
As shown in (B) and (C), a large number of cutter blades 1i vertically
1f is formed. Further, a handle portion 1e having a groove g for preventing slippage and a cutout portion h for preventing rotation is provided at the upper end portion so as to be coupled to a knob for turning by hand or an electric rotating tool on the upper part of the main body.

FIG. 2 (A) is a cross-sectional view showing a state in which the embedding hole 4 of the artificial tooth root 7 is shaped by the shaping tool of the embodiment, and FIG. 2 (B) shows an artificial shape in the hole 4 shaped by the shaping tool 1. It is sectional drawing which shows the state in which the tooth root 7 was embedded. Here, the size of the orthopedic device 1 is such that the diameter of the tip 1a is D1 and the diameter of the taper portion 1c is D
2. If the height from the tip to the upper part of the taper portion 1c is H, these are the same as the corresponding outer dimensions D1, D2, H of the artificial tooth root 7 shown in FIG. 2 (B), respectively.

As shown in FIGS. 2 (A) and 2 (B), the orthodontic appliance 1 inserted into the embedding hole 4 of the artificial dental root 7 drilled in the jawbone by a drill is operated by manually or electrically turning the handle portion 1e. , The bottom of the cancellous bone 9b is shaped by the cutter blade 1i of the tip portion 1a, and at the same time, the cutter blade 1f of the taper portion 1c.
The compact bone 9a at the entrance of the hole 4 is shaped into a taper.
The constricted portion 1b plays a role of accumulating the shavings of the jaw bone cut by the cutter blade 1f, and when the orthodontic appliance 1 is pulled up, the shavings accumulated there can be discharged to the outside of the hole. The groove 1d also serves as a mark for determining the shaping depth of the shaping tool 1.

The orthopedic tool 1 as described above has a cutter blade 1f,
Since 1i is formed vertically, this cutter blade 1
It is easy to form f and 1i by machining, and a large number of cutter blades 1f and 1i can be formed in a vertical groove shape. Since the shaping of the buried hole is performed for finishing shaping of the hole already drilled, this shaping cutting can be performed even with a small vertical groove-shaped cutter blade 1f with a small amount of shaving. . Further, since the shaping tool 1 can make contact with the inner wall of the inserted hole 4 by the number of blades of the cutter blades 1f and 1i, the shaping tool can be shaped into an accurate hole shape without wobbling.

Further, as shown in FIG. 2B, since the hole 4 having the taper portion 4a can be formed in the hard dense bone by the cutter blade 1f of the taper portion, the taper portion 7a on the upper part of the artificial tooth root 7 is formed. By fitting this into the hard taper portion 4a, the artificial tooth root 7 is prevented from sinking into the inside thereof, and when lateral or oblique force is applied to the artificial tooth root 7, stress is relieved. The roots can be stably fixed and supported.

If a cutter blade 1i is provided at the lower end 1a of the constricted portion 1b as in the present embodiment, even if the hole 4 is formed too deep or too shallow, the artificial tooth root 7 to be embedded is formed.
Since the hole 4 can be shaped in the same shape as that of the artificial tooth root 7 and the hole 4
Since there is no gap between the and, it is possible to reduce variations in the burial strength.

In this embodiment, it is preferable that the number of cutter blades is eight or more in order to perform stable shaping without the shaping tool wobbling.

3 (A) and 3 (B) are sectional views showing a state in which the hole is shaped by using the shaping tool of another embodiment.
As shown in FIGS. 3 (A) and 3 (B), in the present embodiment, two types of orthopedic tools, that is, the bottom former 3 and the corner cutter 1A are used to shape the embedding hole 4 of the artificial tooth root. The bottom former 3 shown in (A) has a large number of cutter blades 3a in the longitudinal direction extending from the side surface or the bottom surface of the cylindrical main body. Further, the corner cutter 1A is obtained by removing the blade 1i of the distal end portion 1a of the orthodontic appliance 1 shown in FIG. As shown in FIG. 3 (A), this orthopedic tool first inserts a bottom former 3 into a hole 4 drilled and manually or electrically rotates it to shape the bottom and inner wall of the hole, and then Three
As shown in (B), with the corner cutter 1A, the hole inlet portion of the compact bone 9a is tapered using the tip portion 1a as a guide.
Shape it into a shape.

In the present embodiment, a corner cutter 1A of a shaping tool other than the bottom former 3 for shaping the bottom of the hole is used for the taper.
Since the par part is shaped, it is not necessary to use a dedicated tool for each hole as in the case of the above-described shaping tool. Therefore, shaping of a plurality of holes having different depths is performed by the corner cutter 1A of this example. And the bottom form 3 can be used.

[0016]

According to the first aspect of the present invention, a large number of cutter blades 1f can be formed in a vertical groove shape, and a contact with a large number of blades can be made to the inserted inner wall of the hole, so that the orthopedic tool wobbles. It can be shaped into an accurate hole shape without

According to the second aspect, since the taper shape is widely formed on the hard compact bone by the cutter blade of the taper portion, a stable artificial root implant structure having a large supporting force can be realized.

According to the third aspect of the present invention, since the hole shape conforming to the artificial tooth root to be embedded can be shaped, neither floating nor gap is formed, and a stable artificial tooth root burying hole structure having a large supporting force can be realized.

[Brief description of drawings]

1A is a perspective view of an embodiment of a shaping tool according to the present invention, FIG. 1B is a sectional view taken along line EE of FIG. 1A, and FIG.
It is a FF sectional view of (A).

FIG. 2A is a cross-sectional view showing a state in which an implanting hole of an artificial tooth root is shaped by the shaping tool of the embodiment, and FIG. 2B is an artificial tooth root embedded in a hole shaped by the shaping tool of the embodiment. It is sectional drawing which shows the state.

3 (A) and 3 (B) are cross-sectional views showing, in a used state, a shaping tool according to another embodiment of the present invention, which is a set of two pieces.

4 (A) and (B) are cross-sectional views of a jaw bone showing a state in which an embedding hole of an artificial tooth root is perforated and shaped by a conventional shaping tool.

[Explanation of symbols]

 1, 1A Orthopedic tool 1a Tip part 1b Constriction part 1c Taper part 1e Handle part 1f, 1i Cutter blade 3 Bottom former 4 holes 7 Artificial root 9 Jaw bone 9a Compact bone 9b Sea surface bone

Claims (3)

[Claims] 1. An orthodontic appliance which is inserted into an artificial tooth root burying hole formed in a jaw bone by a drill to shape the hole, wherein a cutter blade of the orthodontic tool is formed vertically. Orthopedic tool. 2. A tapered portion according to claim 1, wherein a constricted portion is provided in an intermediate portion of a portion to be inserted into the hole of the orthopedic tool, and a tapered portion having an enlarged diameter is provided above the constricted portion. The taper
An orthodontic appliance for implanting an artificial tooth root, characterized in that a vertical cutter blade for orthodontics is formed in the portion. 3. The orthodontic appliance for implanting artificial tooth roots according to claim 2, wherein a vertical cutter blade for shaping the hole bottom is formed around the tip of the orthodontic appliance.