JPH0229932Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a heat cutter used in dental treatment.

[Conventional technology]

Generally, the structure of a living tooth (vital tooth) is made up of enamel and dentin on the outside, and a pulp filled with nerves and blood vessels on the inside. disappears and becomes hollow. In a living body, this hollow state becomes a dead space that is the cause of various problems.

Therefore, in dental treatment, a treatment called root filling, which fills the hollow space formed in a dead tooth, is performed. This root filling treatment method is generally performed by filling the hollow part with a rubber-like material called a guttapercha point.

Conventionally, in this radical treatment, as shown in Figure 5,
A rod-shaped gutta percha point 3 is attached to the root canal opening 2a, 2a formed in the lower part of the hollow part 2 of the molar tooth 1.
The root canal is fully pushed in and packed, and the excess portion remaining at the top of the root canal opening 2a (arrowed part in the figure) is burned off and cut off using the heat cutter 4, and a filling material such as metal or cement is placed on top of this, or a crown is placed over it. method is being done.

The conventional heat cutter 4 has a thin bar-shaped cutter part 6 bent into an oblique shape at the tip of a grip part 5, and a chisel-shaped blade 7 is formed at the tip of this cutter part 6. It is designed to cut off the excess Gatsuta Percha Point 3.

However, since the conventional heat cutter 3 has a chisel-shaped blade 6 at the tip, it is easy to use when treating the front teeth, but it has the drawback that it is extremely difficult to use depending on the cutting direction on the molar 1 side. .

[Problem that the invention attempts to solve]

The present invention was devised in view of this point, and aims to provide a heat cutter that can contact and cut the surplus portion of rubber-like fillings from any direction during root filling treatment, and is particularly effective in treating molars. This is the purpose.

[Means for solving problems]

In this invention, a thin rod-shaped cutter part is provided at the tip of the grip part, and a circular blade with a conical base shape with an enlarged tip side is formed at the tip of the cutter part, so that the blade can be used in any direction over the entire circumference. It is characterized by being able to cut sections.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.

FIG. 1 shows a heat cutter 8, in which thin round bar-shaped cutter parts 6, 6 are integrally formed at the tip of an octagonal prism-shaped grip part 5.
As shown in an enlarged view in FIG. 2, a circular blade 9 in the shape of a conical base whose tip side is curved and enlarged is formed at the tip which is bent into an oblique shape.

The heat cutter 8 is made of a material such as stainless steel which has excellent heat resistance since it is used by repeatedly burning with flame, and the total weight is about 8 to 10 g, which makes it easy to operate. Further, the outer diameter of the circular blade 9 at the tip is most easily used, for example, about 1.5 mm to 2.0 mmφ.

[Effect]

Next, a method of performing root filling treatment using the heat cutter 8 having the above configuration will be explained.

First, as shown in FIG.
After fully pushing the rod-shaped guttata percha point 3 into the root canal orifice 2a, push the circular blade 9 of the cutter part 6, which has been burned with a flame, into the surplus part remaining at the top of the root canal opening 2a (the arrowed part in the figure). Bake the excess part and cut it to make the surface smooth.

In this case, the circular blade 9 at the tip has a cutting edge around the entire circumference, so it can cut freely in any direction 360 degrees, and is particularly effective for treating molars located at the back of the oral cavity, which are difficult to treat. be.

In the case of the front tooth 10, as shown in FIG. 4, the root canal opening 2a of the hollow portion 2 is stuffed with a gutta percha point 3, and the excess portion can be cut in the same manner.

In the above embodiment, a double-ended type was shown in which the cutter parts 6, 6 were provided on both sides of the grip part 5, but the cutter parts 6, 6 may be provided only on one side. Furthermore, the gripping part 5 is not limited to being molded integrally with the cutter part 6, and may be of a cartridge type, with circular blades 9 having different outer diameters.
It may also be possible to exchange it with

[Effect of idea]

As explained above, according to the heat cutter according to the present invention, since the circular blade is formed at the tip, it is possible to contact and cut the surplus part of the rubber filling from any direction, especially in the treatment of the molar side. It is easy to use.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention. Figure 1 is a perspective view of a heat cutter, Figure 2 is an enlarged front view of the cutter, and Figure 3 is a molar root filling. An explanatory diagram showing the state in which the surplus part is being cut during treatment. Figure 4 is an explanatory diagram showing the state in which the surplus part is being cut in the treatment of front teeth. Figure 5 is an explanatory diagram showing the state in which the surplus part is being cut with a conventional heat cutter. FIG. 1...Tooth, 2...Hollow part, 2a...Root canal opening, 3
...Gatsuta percha point, 4...Heat cutter, 5...Gripping part, 6...Cutter part, 7...
Blade, 8...heat cutter, 9...circular blade, 10...front teeth.

Claims (1)

[Scope of utility model registration request] A heat cutter characterized in that a thin rod-shaped cutter part is provided at the tip of the grip part, and a circular blade shaped like a conical base with an enlarged tip side is formed at the tip of the cutter part.