JPH0153064B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for attaching a substitute tooth crown made of synthetic resin or the like to a tooth root in the treatment of dental caries.
The present invention relates to a method for manufacturing a substitute tooth crown mount consisting of a metal post and a metal root lining, and a substitute post for manufacturing the substitute tooth crown mount used for manufacturing the same.

[Conventional technology]

Conventionally, to manufacture a substitute tooth crown attachment, a metal post is inserted into the root of the tooth from which the crown has been removed, and then a solidifying type 1 material is placed on top of the tooth root, and after solidifying, a metal post is inserted into the tooth root. Applying a solidifying second type removal agent to the tooth root surface of the first type of coverage that has been removed from the tooth root together with the metal post, and after solidifying the second type of coverage, removing the first type of coverage. Then, on the root surface of the second type of coverage, a hardening type 3 coverage is applied.
After arranging the material in the form of root lining, and encapsulating the third type of material and the metal post with a molding material, the third type of material is heated and evaporated from the molding material to remove it. After that, molten metal was injected into the space formed in the molding material of the third molding material. In other words, conventionally, the root lining was attached to the metal post by molding.

[Problem that the invention seeks to solve]

According to the above conventional means, there is a risk that the metal post will be adversely affected by the heat affected during molding of the root lining, such as a decrease in strength, and the metal post and the metal root lining may be adversely affected. There was a disadvantage that it was difficult to sufficiently increase the connection strength.

The present invention has been made in view of the above circumstances, and its first purpose is to improve the strength of a metal post, and also to improve the connection strength between the metal post and the metal root lining. The second purpose is to provide a method for manufacturing a substitute tooth crown attachment that can be used conveniently to improve manufacturing efficiency when manufacturing a substitute tooth crown attachment using the above manufacturing method. The object of the present invention is to provide a substitute post for manufacturing a dental crown attachment.

First Invention [Means for Solving Problems] The characteristic configuration of the method for manufacturing a substitute tooth crown attachment device according to the first invention is that after inserting the substitute post into the root of the tooth from which the crown has been removed, Type 1 coverage is placed on the upper part of the tooth root, and after hardening, a solidified type 2 coverage is placed on the root surface of the first type coverage, which is removed from the tooth root together with the substitute post, and the second type of coverage is placed on the tooth root surface. After solidifying the mold material, the first mold material is removed, and a solidifying third material is applied to the tooth root surface of the second mold material.
The mold material is arranged in the form of root lining, and after the third mold material solidifies, the second mold material is removed, and the third mold material and the substitute post are covered with a molding material. After the wrapping process, the substitute post is removed from the molding material, and the third mold removal agent is removed by heating and evaporating from the molding material, and then the substitute post and the third mold removal agent are removed, respectively. The process consists of injecting molten metal into the space formed in the mold material in the form of , and its functions and effects are as follows.

[Effect]

That is, the substitute post is removed from the mold material before molten metal is injected into the mold material, and the metal post and the metal root lining are integrally molded.

〔Effect of the invention〕

Therefore, by integrally molding the metal post and the metal root lining, the post and the root lining can each have the desired strength, and the post and the root lining can be bonded together. It has now become possible to manufacture a substitute crown attachment that can be manufactured to have a connection with desired strength and is excellent in practical terms.

Second Invention [Means for Solving Problems] The characteristic structure of the substitute post for manufacturing a substitute tooth crown attachment device according to the second invention is that it is formed so as to be insertable into the root of the tooth from which the crown has been removed, and It is made of a material that can be heated and evaporated within the mold material, and its functions and effects are as follows.

[Effect]

That is, by making it possible to remove it from the molding material by heating and evaporating it, the first step is to carry out the removal treatment from the molding material when manufacturing the substitute crown mount by the manufacturing method of the first invention. 3
It is arranged so that mold sampling can be carried out in parallel with the process of heat evaporation and removal treatment. In other words, it is possible to efficiently remove each of the substitute post and the third mold material of the present invention from the molding material while also performing the heating process.

〔Effect of the invention〕

Therefore, we have obtained a substitute post for manufacturing a substitute tooth crown attachment that can be conveniently used to improve manufacturing efficiency when manufacturing a substitute tooth crown attachment by the manufacturing method of the first invention.

〔Example〕

Hereinafter, when treating cavities, a substitute tooth crown A made of synthetic resin or the like is used to attach to the tooth root B.
A method for manufacturing a substitute tooth crown attachment device consisting of a metal post 1 and a metal root lining 2 will be described based on the drawings, with respect to the case where the substitute post 1A of the second invention is manufactured.

As shown in Figure 1, tooth root B with the crown removed
After inserting a meltable substitute post 1A made of polypropylene or the like, a solidifying first type material 3 made of agar, algix, plaster, etc. is placed on the top of the tooth root B. Arrange and process. In addition, when inserting the substitute post 1A, a tooth root B has to be formed in advance in the hole for insertion, and when the substitute post 1A is made of polypropylene, it is made to be in a state where it can easily be elastically deformed. If it is warmed before being inserted, it is convenient because it can be easily removed when removing it from the tooth root B as described later.

As shown in FIG. 2, after the first type of material 3 has hardened, a second type of solidifying material made of gypsum or the like is placed on the tooth root surface of the first type of material 3 that has been removed from the tooth root B together with the substitute post 1A. After the material 4 is plated and solidified as shown in FIG. 3, the first material 3 is removed and the root surface of the second material 4 is coated with wax or the like. The solidifying third type material 5 is arranged and treated in the form of a root lining 2.
Next, as shown in FIG. 4, after the third type material 5 is solidified, the second type material 4 is removed.

Then, as shown in FIG. 5, the third type coverage 5 and the substitute post 1A are encapsulated with a molding material 7 in a molding box 6. In other words,
As the molding material 7, an investment material that hardens by natural drying is generally used.
The mold material 5 and the substitute post 1A are held in an upright position by the holding frame 8 and placed in the molding box 6, and the molding material 7 is injected into the molding box 6. In addition, when performing the above encapsulation process,
A pipe 10 is supported on the holding frame 8 in a state connected to the third type material 5 as a spool line in order to form a flow path 9 used for the removal process and the injection process of molten metal, which will be described later. Incidentally, instead of the pipe 10, a heat-meltable rod-shaped member such as wax may be installed as a spool wire.

After that, when the molding material 7 is solidified, as shown in FIG. A molten metal such as gold, nickel, gold-palladium, silver, or silver alloy is injected into the space formed in the molding material in the form of each of the third molds 5 to form the metal post 1 and the metal post 1. A substitute tooth crown attachment device consisting of the root surface lining 2 and the root surface lining 2 is integrally molded.

Next, the procedure for attaching the substitute tooth crown A to the substitute tooth crown fitting molded as described above will be explained. As shown in FIG. After the crown part A ₁ constituting half of the tooth crown A is attached together with the wax 11, it is placed between the upper mold 12a and the lower mold 12b, and then,
Molten resin is injected into the area where the wax 11 is located.

[Another example]

Next, another example will be described.

In the above embodiment, a case has been described in which the substitute post 1A of the second invention is used for manufacturing, but for example, a metal substitute post may be provided and the substitute post may be extracted from the molding material 7. In that case, the extraction process may be performed before or after the removal process of the third type material 5.

[Brief explanation of drawings]

The drawings show an embodiment of the method for manufacturing a substitute crown mount and a substitute post for manufacturing the substitute crown mount according to the present invention, and FIGS. 1 to 6 are schematic diagrams showing the manufacturing process, and FIG. It is a schematic diagram showing a manufacturing process of a substitute dental crown. 1...Metal post, 1A...Substitute post, 2
... Root lining, 3... First type coverage, 4... Second type coverage, 5... Third type coverage, 7... Mold material for molding, B
...Tooth roots.

Claims (1)

[Claims] 1. A method for manufacturing a substitute tooth crown attachment device comprising a metal post 1 and a metal root lining 2, in which the substitute post 1A is inserted into a tooth root B from which the crown has been removed. After that, a hardening type 1 material 3 is placed on the upper part of the tooth root B, and after solidification, a hardening type 2 material is placed on the root surface of the first type material 3, which is removed from the tooth root together with the substitute post 1A. The material 4 is plated and treated, and after the second type material 4 is solidified, the first type material 3 is removed, and a solidified third type material 5 is placed on the root surface of the second type material 4. After the third type of material 5 is solidified, the second type of material is
After removing the mold material 4 and enclosing the third mold material 5 and the substitute post 1A in the mold material 7, the substitute post 1A is removed from the mold material 7 and the third The mold material 5 is heated and evaporated from the molding material 7 to be removed, and then the substitute post 1A and the third mold material 5 are removed.
A method for manufacturing a substitute dental crown attachment, which involves injecting molten metal into a space formed in a molding material in each shape. 2. A substitute post for manufacturing a substitute tooth crown fixture, which is formed to be insertable into the tooth root B from which the tooth crown has been removed, and is made of a material that can be heated and evaporated for removal from the molding material.