JPS635740A - Root canal filler with scale - 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 [Technical Field of the Invention] The present invention relates to a root canal filling material made of gutta-percha points or the equivalent thereof, which is used in dentistry for the treatment of dental caries.

[Prior art]

Conventionally, when treating tooth decay that has spread to the pulp, a cotton plug coated with an antiseptic disinfectant is stuffed into the root canal of the tooth from which the pulp has been removed.

However, with this method, apical lesions may develop in the area where the cotton plug was stuffed within a few years, necessitating retreatment. In order to solve this problem, instead of using cotton plugs, we have developed a rod-shaped body with a pointed end made of a rubber-like substance called gutta-percha point (guttapercha: a rubber-like substance made of dried tropical tree resin). In recent years, a method of physically airtightly sealing the inside of the root canal using a blended root canal filling material has become increasingly popular.

However, in order to bring out the original effect of this gutta-percha point, the length of the gutta-percha point must be cut exactly to the same length as the depth of the root canal after the pulp has been extracted, and it must be packed. Sometimes it is necessary to avoid creating a cavity in the root canal. If the length of the gutta-percha point is insufficient and a cavity is created at the apex, apical lesions are likely to occur due to the cavity, and if it is too long, the prognosis may be poor, such as periodontitis. become visible. Therefore, about ±1. It is said that root canal filling must be performed with precision within 0 mm.

To treat such cavities, excellent instruments for measuring the length of the root canal after the pulp has been extracted have already been developed and put into practical use.

However, in order to cut the gutta-percha point to the same length as the root canal length, the reality is that the gutta-percha point material is placed against a tape measure and cut with scissors, etc. Even though auxiliary tools have been developed, cutting to the exact length is still a nerve-wracking and time-consuming process.

[Purpose of the invention]

It is an object of the present invention to provide a root canal filling material that allows gutta-percha points or equivalent points to be cut accurately and easily to the required length.

[Structure of the invention]

The present invention, which solves the above object, is characterized in that a main body formed from a rubber-like substance into a rod-like body having a pointed end is provided with a scale indicating the distance from the pointed end along the elongated direction of the main body. It is.

〔Example〕

The present invention will be explained below with reference to embodiments shown in the drawings.

1 is a root canal filling material 10 with a scale according to an embodiment of the present invention.
The main body is formed into a rod-like body having a pointed end 2 from a rubber-like substance such as resin.

A scale 3 indicating the distance from the tip 2 is attached to the surface of the main body 1 along the elongated direction.

The above-mentioned graduated root canal filling material 10 is generally referred to as gutta-percha point, and is made of a rubber-like substance made of dried resin of a tropical tree from the Malay Peninsula (gutta-percha point).
ercha) and other additives as necessary, but the present invention is not necessarily limited to materials made from this gutta-percha, and equivalent resins, etc. It may be the one you used.

In addition, this root canal filling material is available in many different thicknesses to accommodate the size of the cavity after the pulp has been extracted. It is classified into many types from 25 to 140 according to the above. Moreover, the root canal filling material 10 (i.e., the main body 1) of the present invention
The overall length of the tooth can be arbitrary, but the overall length of a human tooth (from the incisal or cusp to the root end) is usually 20
It is around 30 mm, so a length of about 30 mm is sufficient.

A scale 3 attached to the main body 1 is an extremely important component in the present invention, and the distance from the tip 2 is graduated. The unit may be millimeters, inches, etc., but in Japan it is C.
Since GS units are used, it is better to use millimeters.

In addition, in the case of millimeters, the unit is at least 1 mm.
More preferably, the scale is graduated in units of 0.5 mm. Further, in order to make the units of 5 mm easier to read, it is preferable to mark the units of 5 mm with different sizes or with different colors. Print to add scale 3.

It may be handwritten, or it may be engraved during molding.

This scale 3 may be attached to the entire length of the main body 1,
Alternatively, it may be attached only to the main part in the length direction. 1st
In the illustrated embodiment, the scale is only 10 mm away from the tip 2.

This is because the root canal filling material is rarely cut near the tip 2, and it is preferable that there is no paint such as ink on the tip. Further, the scale 3 may be formed only partially or over the entire circumference of the main body 1 in the circumferential direction, but preferably it is formed over the entire circumference.

The root canal filling material 10 of the present invention described above can be used for root canal filling in the following manner.

First, as shown in Fig. 2, the pulp of the tooth 5 with caries is removed, the contents of the root canal are removed, the root canal is cleaned and enlarged, and the root canal wall is made lubricated to form a cavity 6. . At the same time, the depth β of the cavity 6, that is, the distance l from the opening apex 6a of the cavity 6 to the tooth root end 6b is measured. Such cutting and depth measurements can be easily performed with known instruments.

Next, the root canal filling material 10 of the present invention is cut to prepare a material having the same length as the depth l of the cavity 6 measured as described above. In this cutting operation, since the scale 3 is directly attached to the main body 1 of the root canal filling material as shown in Fig. 1, the blade is inserted along the scale 3 from the tip 2 to the part corresponding to the above depth l. Once you hit it, you can easily and accurately cut the required length.

Next, the root canal is airtightly placed into the cavity 6 under pressure, mainly using the cut root canal filling material 10 as described above, without letting the muddy root canal filling material mixed outside the apical foramen come out. To fill the canal, the root canal filling material 10 has the same length as the depth 2 of the cavity 6, so all you have to do is push it in until its rear end is flush with the opening apex 6a of the cavity 6. The tip 2 is accurately brought into close contact with the tooth root end 6b without creating a cavity.

At this time, there are some gaps around the root canal filling material 10, but if these are filled using a thin auxiliary conical root canal filling material, an airtight filling state can be achieved in the end.

Further, according to the root canal filling material of the present invention, in addition to the above-mentioned usage method, there is a feature that it can be used without being cut. That is, the uncut graduated root filling material 1
0 into the cavity 6 up to a length l while looking at the scale 3. Then, as in the former case, after filling a thinner auxiliary conical root filling material, the portion protruding outside the cavity 10 may be melted together with these materials using a rod-shaped fusing tool.

In this way, it is possible to omit the cutting operation before root filling, which requires careful attention, and it is possible to shorten the -layer treatment time.

The root canal filling material of the present invention may be used in either method, but if we have to make a distinction, the former method is suitable for back teeth, and the latter method is suitable for front teeth. It is.

〔Effect of the invention〕

As mentioned above, the calibrated root canal filling material of the present invention has a rod-shaped main body with a scale indicating the distance from the apex along the longitudinal direction, so it is easy to cut to the required length. can be cut easily and extremely accurately by simply placing the knife along the scale. In other words, it is easier to set the required length because you do not have to apply a tape measure and cut using scissors as in the past.
Moreover, since it can be cut directly, treatment time can be shortened, and the patient can concentrate on treatment without using unnecessary nerves.

Also, depending on the part of the tooth to be treated (for example, front teeth)
It is also possible to use the root canal to fill the root canal as it is without cutting each time, which can contribute to shortening the treatment time.

[Brief explanation of the drawing]

FIG. 1 is a side view of a root canal filling material according to an embodiment of the present invention, and FIGS. 2 and 3 are schematic diagrams each illustrating how the root canal filling material is used to treat tooth decay. 1...Body, 2...Tip, 3...Scale, 1
0...Root canal filling material.

Claims (1)

[Claims] 1. A root canal filling material with a scale, characterized in that a main body formed from a rubber-like substance into a rod-like body having a tip is provided with a scale indicating the distance from the tip along the longitudinal direction of the main body.