JPH0451781Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tooth root holder for root canal treatment related to dental medical technology.

[Conventional technology]

In recent years, due to improvements in dental technology, there has been a trend to preserve teeth without removing them as much as possible, and teeth with no crowns, called "C4" (4th degree), which until recently were considered candidates for extraction. However, if the root of the tooth is strong or hard, and root canal treatment can be easily performed in daily clinical practice, it is possible to save the tooth. However, since the "C4" tooth above lacks a crown, treatment is extremely difficult due to the protrusion of the gingiva and the intrusion of saliva into the root canal. In order to prevent invasion and enable treatment, if the crown of the tooth has collapsed, the defect is repaired with materials such as a cutter band, cast septum, amalgam, cement, or hard resin.

[Problem that the invention attempts to solve]

Therefore, if there is no crown left at all, such as a "C4" tooth, there is a problem that treatment becomes extremely difficult, and in this type of root canal treatment, it is necessary to prevent saliva from entering There was a demand for a treatment tool that could.

The present invention was developed in view of the above-mentioned needs, and it prevents foreign substances such as saliva from entering the root crown of the tooth during treatment. The purpose of the present invention is to provide a tooth root holder for root canal treatment that can be used for root canal treatment.

[Means for solving problems]

The tooth root holder for root canal treatment of the present invention is inserted into the end of the root canal of a tooth whose crown is missing or completely damaged, and which has been expanded to prevent the intrusion of saliva, etc. from the outside. In order to have a structure to prevent the insertion of the root canal and a structure to perform root canal treatment through the insertion part, the tubular part has a tapered tubular part continuously formed at the funnel-shaped mouth end, which can be inserted into the root canal where enlargement treatment has been performed. It is of a size such that the end surface of the funnel-shaped mouth end does not protrude beyond the upper end of the tooth crown when attached to the root canal.

Further, a thread may be formed on the outer periphery of the tapered tubular portion as necessary, and a notch for fitting a rotating jig such as a screwdriver may be formed at the end edge of the funnel-shaped opening to form a screw-type structure.

[Effect]

The tooth root holder for root canal treatment with the above structure is used to perform root canal treatment on a tooth with a missing or completely damaged tooth crown, by first enlarging the root canal to have an appropriate inner diameter, and then driving a tapered tubular part, or It is securely inserted and fixed into the root canal by screwing, and the outer periphery of the tapered tubular part and the tooth canal are solidified and airtight with an adhesive or a repair material. In this state, the tapered tubular part protrudes from the gingival position, which prevents foreign substances such as saliva from entering the root canal, and root canal treatment is performed using various conventional dental treatments through the canal hole of the root holder. Instruments can be inserted and treatments can be performed.

Further, after the treatment, the tooth root holder can be used as it is as a support shaft for the tooth root, and the crown part of the denture that is crowned on the funnel-shaped mouth end can be firmly fixed.

〔Example〕

Hereinafter, embodiments of the tooth root holder for root canal treatment of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment, which has a screw-in type structure. A tapered tubular part 2 whose tip has a slightly smaller diameter is continuous to the lower end of a funnel-shaped mouth end 1 forming the head, and passes through a tube hole 3 and extends around the outer periphery of the tapered tubular part 2. A screw thread 4 is formed, and cutouts 5, 5 for fitting a rotating jig such as a screwdriver are formed at the end of the funnel-shaped mouth end 1.

As shown in FIG. 3, the tooth root holder is, for example,
During root canal treatment of C4 tooth 10,
After enlarging the root canal, the tapered tubular part 2 is inserted into the root canal 1.
1, and rotates the rotating jig appropriately in a state where it is fitted into the notches 5, 5 for fitting the rotating jig, and screws and fixes the thread 4 into the root canal 11. At this time, a sealing fixing material 13 such as an adhesive or a repair material is placed between the root canal 11 and the tapered tubular portion 2.
Fill it and harden it to make it airtight. The root canal 11 in the treated area is re-enlarged through the posterior canal hole 3, and the root canal is temporarily sealed or filled after cleaning and applying medicine, and the temporary seal is removed at a later date to perform re-treatment. You can also do it. Further, when the denture crown part 14 is attached after the treatment is completed, the tooth root holder can be left in place on the tooth root and used as a support shaft.

Next, FIG. 4 shows a driving type embodiment of the present invention, in which the screw thread 4 of the screw type and the notches 5, 5 for fitting the rotation jig are removed, and the tapered tubular portion 2 is removed. The cutting edge 6 has a sharp tip. Therefore, the implantable tooth root holder is used by being implanted and fixed to the root of the tooth where the root canal has been enlarged.

[Effect of idea]

As mentioned above, the root holder for root canal treatment of the present invention prevents foreign substances such as saliva from entering the root canal during root canal treatment, making the treatment easier and leaving the tooth root intact in the root canal. It has characteristics such as being useful as a supporting shaft for the crown of a denture.
The practical effects of this invention are extremely large.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the first embodiment of the tooth root holder for root canal treatment of the present invention, Fig. 2 is a front sectional view of the same, and Fig.
The figure is a front sectional view of the root of the tooth showing the state of use, and FIG. 4 is a front sectional view showing another embodiment of the present invention. 1...funnel-shaped mouth end, 2...tapered tubular part, 3...
...Pipe hole, 4...Thread, 5...Notch for fitting rotation jig, 6...Blade end.

Claims (1)

[Scope of utility model registration request] A funnel-shaped mouth end is continuously formed at the large-diameter end of the tapered tubular part, and the tapered tubular part is configured to be able to penetrate through the canal hole over the entire length and to be inserted and fitted into the enlarged root canal of the tooth root. A tooth root holder for root canal treatment characterized by: