JP2581597Y2 - Electrodes for root canal length measurement - Google Patents
Electrodes for root canal length measurementInfo
- Publication number
- JP2581597Y2 JP2581597Y2 JP3842292U JP3842292U JP2581597Y2 JP 2581597 Y2 JP2581597 Y2 JP 2581597Y2 JP 3842292 U JP3842292 U JP 3842292U JP 3842292 U JP3842292 U JP 3842292U JP 2581597 Y2 JP2581597 Y2 JP 2581597Y2
- Authority
- JP
- Japan
- Prior art keywords
- root canal
- measuring
- electrode
- needle
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、歯科治療において根管
長を電気的に測定するための根管長測定用電極に関し、
より詳細には、根管長を測定するために根管長測定針に
着脱自在に装置されて、該根管長測定針の先端が根尖位
置に達したことを電気的に検出するための根管長測定用
電極の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a root canal length measuring electrode for electrically measuring a root canal length in dental treatment.
More specifically, the device is detachably mounted on the root canal length measuring needle to measure the root canal length, and electrically detects that the tip of the root canal length measuring needle has reached the apical position. The present invention relates to a structure of an electrode for measuring a root canal length.
【０００２】[0002]
【従来の技術】歯内療法における根管治療の困難さは、
根尖周囲組織を傷つけずに根尖まで確実に根管の拡大、
清掃を行い、これを緊密に充填する点にある。治療中に
根尖孔を越えてリーマ、ファイル、ブローチ、根管充填
材料等で根尖充填材料等根尖歯周組織を刺激することは
好ましくなく、このため、根尖歯周組識の刺激を恐れ
て、器具の挿入が不十分となったり、根尖部根管に清掃
消毒されない空隙を残すことは予後を不良にする原因と
なる。したがって、根管治療を正しく行うためには、予
め根管の正確な長さを知っておく必要がある。これまで
臨床において根管長を知る方法として、測定針（通常、
リーマまたはファイル）を根管に挿入し、術者の手指の
感覚による方法が知られている。2. Description of the Related Art The difficulty of endodontic treatment in endodontics is
Enlargement of the root canal to the apex without damaging the tissue around the apex,
The point is to clean and fill it tightly. It is not preferable to stimulate the apical periodontal tissue such as the apical filling material with a reamer, file, broach, root canal filling material, etc. beyond the apical foramen during the treatment. Due to fear of inadequate insertion of instruments or leaving an apical root canal that cannot be cleaned or disinfected can cause a poor prognosis. Therefore, in order to perform root canal treatment correctly, it is necessary to know the exact length of the root canal in advance. Until now, as a method of knowing the root canal length in clinical practice, a measuring needle (usually,
(Reamer or file) is inserted into the root canal, and a method based on the fingers of the operator is known.
【０００３】しかし、この方法によると、上顎切歯、犬
歯、下顎小臼歯等のように単純で太い根管で、しかも根
尖が完成して、根尖狭窄部が明らかに触知できる症例で
はほぼ触知できるが、細く、根尖未完成歯や彎曲した根
管では熟練者でも確認が難しいという問題点がある。そ
のために根管長を電気的に測定するものとして、特開昭
６０−１７４１４４号公報に記載されているように、根
管内に、リーマを測定針として挿入し、口腔粘膜に当接
した片電極との間に、例えば１ＫＨｚ2と５ＫＨｚ2の２
つの周波数の交流電圧を加え、根管長を検出するものも
提案されている。However, according to this method, a simple and thick root canal, such as an upper incisor, a canine tooth, or a lower premolar, and the apex is completed so that the apical stenosis can be clearly palpated. Although it is almost palpable, it has a problem that it is difficult for even a skilled person to confirm a thin, apical incomplete tooth or a curved root canal. Therefore, as described in Japanese Patent Application Laid-Open No. Sho 60-174144, a reamer is inserted into the root canal as a measuring needle to electrically measure the length of the root canal, and a piece that comes into contact with the oral mucosa is used. between the electrodes, for example, 2 of 1 KHz 2 and 5 KHz 2
There has also been proposed one that detects an apical root length by applying an alternating voltage of two frequencies.
【０００４】図３は、手用のリーマ又はファイルを用い
て根管長を電気的に測定する一例を説明するための図
で、図中、２０はリーマ又はファイルホルダー、３０は
リーマ又はファイル、４０は歯、４１は根管、４２は歯
肉で、周知のように、リーマ又はファイル３０は、導電
性の針部材３１、刃部３２、ラバーストップー３３、把
持部３４等から成り、該手用のリーマ又はファイルを用
いて根管長を測定する場合、ラバーストッパー３３と把
持部３４の間をホルダー２０の測定用電極２１で保持
し、リーマ又はファイルを一方の電極とする電気的根管
長測定の際の一方の電極の信号取り付け部としている。
この電気的な根管長の測定により根管長が検出できたら
ラバーストッパー３３を移動させて、根管長をリーマに
移して読んでいた。この時、臼歯の場合、口の開き方が
問題となり、口があまり開かない人、女性等は口が小さ
く、なるべくＬ1の短かいものを使用したい。しかし、
そうすると、Ｌ2が短くなり、ラバーストッパー３３と
把持部３４間の距離Ｌ3がなくなりあつかいにくくな
る。FIG. 3 is a view for explaining an example of electrically measuring the root canal length using a hand reamer or file. In the figure, 20 is a reamer or file holder, 30 is a reamer or file, 40 is a tooth, 41 is a root canal, and 42 is a gingiva. As is well known, the reamer or file 30 includes a conductive needle member 31, a blade portion 32, a rubber stop 33, a grip portion 34, and the like. When the root canal length is measured by using a reamer or a file, the gap between the rubber stopper 33 and the holding portion 34 is held by the measuring electrode 21 of the holder 20, and the electrical root canal having the reamer or the file as one electrode is used. It is used as a signal attachment part for one electrode during length measurement.
When the root canal length was detected by the electrical root canal length measurement, the rubber stopper 33 was moved, and the root canal length was transferred to the reamer for reading. At this time, the case of molars, will be how to open the mouth is a problem, people who mouth is not very open, women, etc. mouth is small, you want as much as possible using a short shopping of L 1. But,
Then, L 2 becomes shorter, the distance L 3 between the gripping portion 34 hardly disappears treated a rubber stopper 33.
【０００５】図４は、図３に示したホルダー２０の詳細
を説明するための断面図で、２１は前述のように、測定
電極で、この測定電極２１は、図示のように絶縁性の保
護管２２内に挿通され、その端部は、機械的には、押圧
部材２３に固定され、電気的にはリード線２４に接続さ
れ、該リード線２４を通して図示しない根管長（根尖位
置）測定器に導かれている。一方、保護管２２の端部２
２ａは大径に形成され、この大径部２２ａ内にスプリン
グ２５が挿入されている。従って、押圧部材２３を矢印
Ａ方向に押すと、スプリング２５が圧縮され、測定電極
２１が矢印Ａ′方向に移動し、従って、保護管２２の先
端部２２ｂと測定電極２１の先端との間に測定針３１を
挿入することができ、押圧部材２３の押圧力を解除する
と、測定電極２１は、スプリング２５の復元力によって
矢印Ｂ′方向に移動し、従って、図３に示したように、
保護管２２の先端部２２ｂと測定電極２１との間に測定
針３１を狭持することができる。FIG. 4 is a cross-sectional view for explaining the details of the holder 20 shown in FIG. 3. Reference numeral 21 denotes a measuring electrode as described above. It is inserted into the tube 22, and its end is mechanically fixed to the pressing member 23 and is electrically connected to the lead wire 24, and a root canal length (apical position) not shown through the lead wire 24. Guided to a measuring instrument. On the other hand, the end 2 of the protection tube 22
2a is formed to have a large diameter, and a spring 25 is inserted into the large diameter portion 22a. Therefore, when the pressing member 23 is pressed in the direction of arrow A, the spring 25 is compressed, and the measuring electrode 21 moves in the direction of arrow A '. Therefore, the distance between the tip 22b of the protective tube 22 and the tip of the measuring electrode 21 is increased. When the measuring needle 31 can be inserted and the pressing force of the pressing member 23 is released, the measuring electrode 21 moves in the direction of the arrow B 'by the restoring force of the spring 25, and therefore, as shown in FIG.
The measurement needle 31 can be held between the tip 22 b of the protection tube 22 and the measurement electrode 21.
【０００６】[0006]
【考案が解決しようとする課題】前述のように、上記管
根長測定針３１においては、口があまり開かない人のた
めできるだけ全長Ｌ1の短いものを使用したいが、Ｌ1を
短くすると、必然的にＬ2を短くしなければならない
が、そうすると、Ｌ3が短くなり、測定電極２１を挿入
するスペースＬ3が狭くなり取り扱いにくくなる。As Disclosed invention is to provide a described above, in the pipe root length measurements needle 31, mouth want to use a very short as possible the total length L 1 for those who do not open, the shorter L 1, Inevitably, L 2 must be shortened. However, in this case, L 3 is shortened, and the space L 3 in which the measurement electrode 21 is inserted becomes narrow, which makes it difficult to handle.
【０００７】[0007]
【課題を解決するための手段】本考案は、上述のごとき
課題を解決するために、（１）リーマ又はファイル等の
導電性の針部材から成る根管長測定針に着脱自在に装着
されて前記根管長測定針の先端が根尖に達したことを電
気的に検出する根管長測定用電極において、前記根管長
測定用電極が導電性の線状部材から成るとともに、該線
状部材の先端が折り返されて構成され、該折り返し部に
おいて前記根管長測定針を弾性狭持するようにしたこ
と、或いは、（２）リーマ又はファイル等の導電性の針
部材から成る根管長測定針に着脱自在に装着されて前記
根管長測定針の先端が根尖に達したことを電気的に検出
する根管長測定用電極において、前記根管長測定用電極
が導電性の線状部材と、該線状部材の先端部に一体的に
取り付けられた２本の導電性の線状弾性部材とから成
り、該２本の線状弾性部材間に前記根管長測定針を弾性
狭持するようにしたことを特徴としたものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has the following features. (1) It is provided that the device is detachably attached to a root canal length measuring needle made of a conductive needle member such as a reamer or a file. In a root canal length measurement electrode for electrically detecting that the tip of the root canal length measurement needle has reached the apex, the root canal length measurement electrode is formed of a conductive linear member, and The distal end of the member is folded back, and the root canal length measuring needle is elastically held at the folded portion; or (2) a root canal length made of a conductive needle member such as a reamer or a file. A root canal length measuring electrode that is detachably attached to a measuring needle and electrically detects that the tip of the root canal length measuring needle has reached the apex, wherein the root canal length measuring electrode is a conductive wire. And two members integrally attached to the tip of the linear member Consists of a conductive linear elastic members, in which characterized in that the said root canal length measuring needle between the linear elastic members two said to be elastic sandwiched.
【０００８】[0008]
【作用】測定用電極が挿入される保護管を無くし、もっ
て、測定用電極の構造を簡単にするとともに、測定用電
極が測定針の軸方向に占める距離を短くし、もって、測
定針の全長を短くすることを可能にし、根管長の測定を
操作性よく容易に行なえるようにする。The protective tube into which the measuring electrode is inserted is eliminated, thereby simplifying the structure of the measuring electrode and shortening the distance occupied by the measuring electrode in the axial direction of the measuring needle. And the length of the root canal can be easily measured with good operability.
【０００９】[0009]
【実施例】図１は、本考案による根管長測定用電極の一
実施例を説明するための図で、図中、１は本考案による
測定用電極、２は把持部、３はリード線で、本考案にお
いては、測定用電極１は絶縁被覆された導電性の線状
（棒状）部材で構成され、その先端部において絶縁被覆
が切除されて該針状部材１と略平行になるように折り返
され、この折り返し部１ａ部において、測定針１０が弾
性狭持されるようになっている。FIG. 1 is a view for explaining one embodiment of an electrode for measuring root canal length according to the present invention, wherein 1 is a measuring electrode according to the present invention, 2 is a grip portion, and 3 is a lead wire. In the present invention, the measuring electrode 1 is formed of a conductive linear (rod-shaped) member coated with an insulating material, and the insulating coating is cut off at its tip so that it is substantially parallel to the needle-shaped member 1. The measurement needle 10 is elastically held at the folded portion 1a.
【００１０】図２は、本考案の他の実施例を説明するた
めの図で、図中、図１に示した実施例と同様の作用をす
る部分には、図１の場合と同一の参照番号が付してあ
る。而して、この実施例は、線状電極絶縁被覆された
（又はリード線）１の直径に略等しい（できる薄い厚さ
の）中継電極板４を取り付け、この中継電極板４の先端
部に前記針状電極１の直径に等しいか、或いは、該直径
より細い直径の２本の導電性電極５ａ，５ｂを略平行に
延長させ、これら２本の電極５ａ，５ｂ間に測定用電極
１０を狭持するようにしたものである。FIG. 2 is a view for explaining another embodiment of the present invention. In the figure, parts having the same functions as those of the embodiment shown in FIG. Numbered. Thus, in this embodiment, the relay electrode plate 4 having a diameter substantially equal to the diameter of the linear electrode insulating coating (or the lead wire) 1 (having a small thickness) is attached to the end of the relay electrode plate 4. Two conductive electrodes 5a, 5b having a diameter equal to or smaller than the diameter of the needle electrode 1 are extended substantially in parallel, and a measurement electrode 10 is placed between the two electrodes 5a, 5b. It is designed to hold.
【００１１】[0011]
【考案の効果】以上の説明から明らかなように、本考案
によると、従来技術において、測定用電極が内挿されて
いる保護管を不要としたので、測定用電極の構造が簡単
となり、かつ安価となる。更に、従来技術において必要
としていた保護管を不要としたので、その分、測定用電
極が測定針の長さ方向に占める距離Ｌ3が短くなり、測
定針の全長を短くすることができ、或いは、測定針の把
持部と、ラバーストッパーとの間の間隔が短くて済み、
根管長測定の操作がしやすくなる。また、従来必要とし
ていた保護管を不要としたので、重量が軽くなり、特
に、測定用電極から手を離した時など、測定針が測定用
電極に引っ張られるようなことがなくなり、非常に作操
性がよい等の効果がある。As is clear from the above description, according to the present invention, the protective tube in which the measuring electrode is inserted is not required in the prior art, so that the structure of the measuring electrode is simplified, and It will be cheaper. Further, since the protective tube required in the prior art is not required, the distance L 3 occupied by the measuring electrode in the length direction of the measuring needle is shortened accordingly, and the total length of the measuring needle can be shortened, or , The distance between the gripper of the measuring needle and the rubber stopper is short,
The operation of root canal length measurement becomes easier. In addition, the need for a protective tube, which was required in the past, is eliminated, so that the weight is reduced.In particular, when the hand is released from the measuring electrode, the measuring needle is not pulled by the measuring electrode, making it extremely workable. There are effects such as good maneuverability.
【図１】 本考案による根管長測定用電極の一実施例を
説明するための図である。FIG. 1 is a view illustrating an embodiment of an electrode for measuring root canal length according to the present invention.
【図２】 本考案による根管長測定用電極の他の一実施
例を説明するための図である。FIG. 2 is a view illustrating another embodiment of an electrode for measuring a root canal length according to the present invention.
【図３】 根管長を電気的に測定する場合の一例を説明
するための図である。FIG. 3 is a diagram illustrating an example of a case where a root canal length is electrically measured.
【図４】 従来の根管長測定電極の一例を説明するため
の図である。FIG. 4 is a diagram illustrating an example of a conventional root canal length measurement electrode.
１…根管長測定用電極、１ａ…折り返し部、２…把持
部、３…リード線、４…中継板、５ａ，５ｂ…電極、１
０…根管長測定針。DESCRIPTION OF SYMBOLS 1 ... Root canal length measurement electrode, 1a ... Folding part, 2 ... Grip part, 3 ... Lead wire, 4 ... Relay board, 5a, 5b ... Electrode, 1
0: Root canal length measuring needle.
Claims (2)
から成る根管長測定針に着脱自在に装着されて前記根管
長測定針の先端が根尖に達したことを電気的に検出する
根管長測定用電極において、前記根管長測定用電極が導
電性の線状部材から成るとともに、該線状部材の先端が
折り返されて構成され、該折り返し部において前記根管
長測定針を弾性狭持するようにしたことを特徴とする根
管長測定用電極。1. A removably attached needle for measuring the length of a root canal made of a conductive needle member such as a reamer or a file to electrically detect that the tip of the needle for measuring a root canal reaches the apex. In the root canal length measuring electrode, the root canal length measuring electrode is formed of a conductive linear member, and the distal end of the linear member is folded back. An electrode for measuring a root canal length, which is elastically held.
から成る根管長測定針に着脱自在に装着されて前記根管
長測定針の先端が根尖に達したことを電気的に検出する
根管長測定用電極において、前記根管長測定用電極が導
電性の線状部材と、該線状部材の先端部に一体的に取り
付けられた２本の導電性の線状弾性部材とから成り、該
２本の線状弾性部材間に前記根管長測定針を弾性狭持す
るようにしたことを特徴とする根管長測定用電極。2. A removably attached needle for measuring the length of a root canal made of a conductive needle member such as a reamer or a file to electrically detect that the tip of the needle for measuring a root canal has reached an apex. In the root canal length measurement electrode, the root canal length measurement electrode is formed of a conductive linear member and two conductive linear elastic members integrally attached to the distal end of the linear member. An electrode for measuring a root canal length, wherein the root canal length measuring needle is elastically held between the two linear elastic members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3842292U JP2581597Y2 (en) | 1992-05-13 | 1992-05-13 | Electrodes for root canal length measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3842292U JP2581597Y2 (en) | 1992-05-13 | 1992-05-13 | Electrodes for root canal length measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0591626U JPH0591626U (en) | 1993-12-14 |
| JP2581597Y2 true JP2581597Y2 (en) | 1998-09-21 |
Family
ID=12524883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3842292U Expired - Fee Related JP2581597Y2 (en) | 1992-05-13 | 1992-05-13 | Electrodes for root canal length measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2581597Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5361822B2 (en) * | 2010-07-26 | 2013-12-04 | 株式会社長田中央研究所 | Dental root canal length measuring instrument |
-
1992
- 1992-05-13 JP JP3842292U patent/JP2581597Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0591626U (en) | 1993-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4447206A (en) | Device and method for detecting apical constriction in root canal of tooth | |
| US5000683A (en) | Periodontal probe | |
| US20230338115A1 (en) | Apex locator attachment | |
| WO2003063724A2 (en) | Endodontic instrument | |
| Reuter | The isolation of teeth and the protection of the patient during endodontic treatment. | |
| JP3103325B2 (en) | File clip holder for apical hole position detection | |
| JP2581597Y2 (en) | Electrodes for root canal length measurement | |
| JP2012019849A (en) | Dental root canal length measuring instrument | |
| JP2857514B2 (en) | Root canal treatment device | |
| US5244386A (en) | Dental diagnostic device and method | |
| JP2581599Y2 (en) | Electrodes for root canal length measurement | |
| PT90287A (en) | TOOTHBRUSH WITH DENTAL PEST RESERVATORY | |
| JP3253874B2 (en) | Root canal length measurement and apical foramen position detector | |
| JPH0956734A (en) | Electrode for measuring root canal length | |
| US20030064347A1 (en) | Endodontic file and method | |
| CN214671385U (en) | Periodontal probe pressure training device | |
| JP4481146B2 (en) | Dental cutting instrument | |
| JP2000254149A (en) | Dental root canal forming and root canal length measuring handpiece | |
| US6872075B2 (en) | Endodontic file with a metallic conductor as part of the plastic handle to facilitate use of electronic apex locators | |
| JPH0626257Y2 (en) | Root canal length measuring needle | |
| US20060003286A1 (en) | Tools and methods for measuring tooth reduction | |
| JP2002011025A (en) | Root canal length measuring system | |
| JPH10165422A (en) | Dental saliva drain tube with apex position measuring mechanism | |
| JP2001309932A (en) | File holder | |
| US20090181341A1 (en) | Endodontic Instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |