JPH0321220Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a useful root canal drying method that can be used in dental treatment to dry the root canal after root canal cleaning, which is an important procedure immediately before root canal filling. Regarding apical brooches.

[Conventional technology]

Conventionally, when drying the root canal after root canal cleaning, the broach cotton method is used to wrap cotton around a broach, the paper point method is to insert a paper point up to the working length, and for convenience, the cotton is wrapped around a reamer or K-file. , there was a way to insert it up to the working length.

[Problem that the invention attempts to solve]

However, in the broached cotton method described above, (1) it is difficult to wind the broached cotton so that it conforms to the shape of the root canal in which it is formed; (2) It is complicated to insert it into the root canal according to the working length. (3) The strength of the broach is low, and it is easy to bend or break if a little strong force is applied. (4) The broach may pop out from the tip of the cotton and damage the apical periodontal tissue. Due to these drawbacks, it is difficult to reliably dry the apical root canal using the broach cotton method. In particular, drying a root canal with a long working length is extremely difficult.

In addition, with the paper point method, it is said that drying can be achieved reliably by inserting a paper point of the same standard as the final enlargement device for the apical root canal to the working length; Difficult to insert all the way to the root apex. Furthermore, it lacks clinical convenience and economic efficiency.

Furthermore, in the method of winding cotton with a reamer or K-file, the working part has a blade, which can cause injury to fingers when winding the cotton, and the cotton can wrap tightly around the blade, making it difficult to shape the root into the shape of a root canal. There were disadvantages such as it was difficult to remove the cotton from the equipment after drying the tube, and equipment of size 30 or smaller was more likely to break or become twisted.

By the way, root canal drying after root canal cleaning is an operation frequently performed in daily clinical treatment and has important significance.

This is an especially important procedure immediately before root canal filling. If cleaning solution remains on the root canal wall near the apical seat, the root canal filling operation will not be able to seal the apical foramen airtight, and the remaining cleaning solution will also have an effect on the apical periodontal tissue. This is because it cannot be ignored.

It is an object of the present invention to provide an apical broach for root canal drying that can solve all the drawbacks of the conventional techniques mentioned above and can ideally dry the root canal after cleaning the root canal.

[Means for solving problems]

The problem mentioned above is that the working part connected to the plastic handle is made of stainless steel, the same as the reamer and file, and has a square cross section, with a taper that gradually reduces the circumference toward the tip. The tip has a square pyramid shape, and is attached to Attachment 1.
As shown in the figure, the total length of the working part is 21, according to ISO qualification.
The problem is solved by apical broaches for drying root canals, which are available in three types: mm, 25 mm, and 28 mm, with diameters equivalent to size 15 and size 80 shells.

〔Example〕

Hereinafter, embodiments of the apical broach for root canal drying of the present invention will be described based on the drawings.

1 in the figure is an apical broach for root canal drying of the present invention, in which a shaft part 3 connected to a handle part 2 is formed with a working part 5 whose circumferential diameter gradually decreases toward the tip part 4 and whose cross section is a square. The tip portion 4 is shaped like a quadrangular pyramid. In FIG. 2, 6 is an apical broach cotton wound around the root canal drying apical broach 1, and 7 is a rubber stop attached to the root canal drying apical broach 1 in accordance with the working length.

Next, we will describe how to use the apical broach for root canal drying of the present invention.

In advance, all apical brooches 1 are stored in a reamer box for disinfection, and rubber stops 7 are attached. Next, take an apical broach 1 with a size 1 to 2 sizes smaller than that of the final root canal enlarging device and the same full length, and adjust the rubber stop 7 to the working length. For curved root canals, use an apical broach 3 to 4 sizes smaller. Next, as shown in FIG. 2, in the same manner as when wrapping cotton around a square brooch, while rotating the apical brooch in the forward direction, wrap absorbent cotton evenly around the portion corresponding to the blade. The thickness should be a little thicker than the final enlarging device.

After sterilizing the apical broach cotton 6 in a dry sterilizer for 3 to 5 seconds, insert it into the root canal and advance it to the working length while rotating in the forward direction, but it is appropriate that there is some resistance. Next, pull it out while rotating it in the forward direction. The removed cotton 6 has a shape similar to that of the root canal, and absorbs moisture within the root canal.

When inserting the root canal, if there is strong resistance and the working length cannot be reached, the cotton 6 is re-wound a little thinner and used. When removing the cotton, the cotton part is gripped with an alcohol swab and the apical broach 1 is slightly rotated in the opposite direction and pulled out, and the cotton 6 is removed.

According to this embodiment, the cotton 6 removed from the root canal is observed, and drying is repeated until no moisture absorption is observed with the naked eye. It can be completed in 2-3 times on average.

[Effect of idea]

According to the present invention, however, in terms of the ease of winding cotton and the strength of the device, the intended purpose of using cotton for the apical sheet portion to dry and also serve as a cleaning device was easily achieved.

In other words, since the cross section is a regular square and the corners are clear, cotton can be rolled up much more easily than with conventional square broaches, and the tip can be rolled up easily. The cotton will not loosen while rotating in the forward direction. It is also easy to remove the cotton from the device after use.

Also, compared to reamers and files of the same size, it is much stronger and more flexible because it does not have a blade. Therefore, it will not be damaged even if it is rotated with a small amount of force, and it can also be applied to curved roots.

Furthermore, since the thickness and overall length of the instrument can be selected depending on the thickness and length of the enlarged root canal, the root canal wall can be sufficiently removed and the operation is easy.

In cases where the root canal has been formed with an appropriate shape, even in a root canal with a long working length, such as in a maxillary canine, according to the present invention, the cotton is naturally shaped into the shape of the root canal, and the apical seat part definitely reach. Therefore, when the apical broach cotton method was used after determining that the conventional broach cotton method had sufficiently dried the cotton, there were many cases in which moisture absorption was observed at the tips of the cotton. If the root canal is properly cleaned and formed, the patient will not complain of pain as long as the working length is adhered to. Furthermore, even if the tip of the apical broach should protrude from the cotton, it will stop at the inclined surface of the apical sheet, so it will not reach the apical periodontal tissue and damage that part.

In addition, the apical broach cotton of the present invention, which can reliably reach the apical sheet, has several clinical applications other than root canal drying due to its characteristics. In other words, the broach cotton method can reliably diagnose the presence or absence of blood, exudate, pus, etc. in the apical root canal, which are easy to remove (diagnosis of the apical periodontal tissue). Alternatively, by wrapping cotton loosely around an apical broach, penetrating it to the working length, rotating it slightly in the opposite direction, and then pulling it out, you can place a patch cotton plug that fits well in the root canal, and the effectiveness of various drugs used in the root canal. The point where the effect is certain (root canal patch). Furthermore, by transporting the sealer into the root canal using an apical broach cotton that has been shaped into the shape of the root canal in advance, and inserting the sealer to the apical sheet while rotating, it is possible to reliably apply the sealer to the root canal wall. What you can do. In addition, when removing the gutta percha remaining on the root canal wall after removing the old root canal filling material, it is efficient to soak the apical broach cotton in chloroform and press it against the root canal wall while rotating.
This includes the ability to dissolve and remove gutta percha remaining in the apical root canal.

As mentioned above, with the present invention, drying of the root canal after root canal cleaning, which is an important treatment procedure in dental treatment, can be performed completely, quickly and safely, and compared to the conventional method described above. We were able to resolve all of the shortcomings of

[Brief explanation of the drawing]

FIG. 1 is a front view of the apical broach for drying a root canal of the present invention, and FIG. 2 is a front view showing the apical broach for drying a root canal, which is formed by winding cotton that has been shaped into the shape of a root canal during use. 1... Apical broach for root canal drying, 2... Handle, 3... Shaft, 4... Tip, 5... Working part,
6...Apical brooch cotton, 7...Rubber stop.

【table】

Claims (1)

[Scope of utility model registration request] The working part connected to the handle has a square cross section,
1. An apical broach for drying a root canal, characterized in that a taper is formed to gradually reduce the circumferential diameter toward the distal end, and the distal end is shaped like a square pyramid.