JPH0315059Y2 - - Google Patents
Info
- Publication number
- JPH0315059Y2 JPH0315059Y2 JP4364786U JP4364786U JPH0315059Y2 JP H0315059 Y2 JPH0315059 Y2 JP H0315059Y2 JP 4364786 U JP4364786 U JP 4364786U JP 4364786 U JP4364786 U JP 4364786U JP H0315059 Y2 JPH0315059 Y2 JP H0315059Y2
- Authority
- JP
- Japan
- Prior art keywords
- root canal
- reamer
- canal length
- length measuring
- sensor
- 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
Links
- 210000004262 dental pulp cavity Anatomy 0.000 claims description 50
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 8
- 210000002200 mouth mucosa Anatomy 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 210000002379 periodontal ligament Anatomy 0.000 description 2
- 210000001114 tooth apex Anatomy 0.000 description 2
- 241000270728 Alligator Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、歯科治療に際し、根管拡大形成に用
いるリーマ等が根尖部より突き出てしまうことな
く当該治療歯根管長を極めて容易にしかも正確に
表示することができ安全な歯科治療を行うために
用いて有用な根管長測定器に関するものである。[Detailed description of the invention] [Industrial application field] The present invention makes it possible to extremely easily and accurately measure the root canal length of the treated tooth during dental treatment without the reamer used for enlarging the root canal protruding beyond the root apex. The present invention relates to a root canal length measurement device that can be displayed on the screen and is useful for performing safe dental treatment.
根管長測定器に際しては従来、ブローチあるい
は探針にあらかじめ示標をつけて根管内に挿入し
て根尖部に達した時、示標を切縁に位置させて取
出し、物差しで測定する方法、あるいは示標をつ
けた測定針を根尖孔外に押し出さない程度に根管
に挿入してＸ線撮影を行う方法がある。又近年に
おいては根管の電気抵抗測定による根管長測定が
行われている。この電気的根管長測定法はかなり
の高率で根尖孔の位置を教えてくれるのが多少の
バラツキもありＸ線撮影方法と併用されたりして
いる。
Conventionally, when using a root canal length measuring device, a broach or probe with an indicator attached in advance is inserted into the root canal, and when the apex is reached, the indicator is positioned at the incisal edge, taken out, and measured with a ruler. Alternatively, there is a method in which a measuring needle with an indicator is inserted into the root canal to the extent that it is not pushed out of the apical foramen and X-ray photography is performed. In recent years, root canal length measurement has also been carried out by measuring the electrical resistance of the root canal. This electrical root canal length measurement method shows the position of the apical foramen at a fairly high rate, with some variation, and is sometimes used in combination with X-ray photography.
電気的根管長測定法にあつては、従来の手指の
感覚による方法あるいはＸ線撮影による方法に比
べて安全性及びＸ線被爆量が与える悪影響からす
れば極めてすばらしい技術であるが次の如き所欠
点も又残存している。
Electrical root canal length measurement is an excellent technique compared to conventional methods using finger sensation or X-ray photography in terms of safety and the negative effects of X-ray exposure, but the following points apply: Shortcomings also remain.
すなわち従来の電気的根管長測定器にあつて
は、極めて大がかりで大径の装置からなり、測定
作業にあつては操作上多大の労苦を要するととも
に、センサー部はリーマ径部に固定するわに口形
態あるいはクリツプ型のものであり、測定及び治
療に際してはその都度取付け、取り外し作業を余
儀なくされるとともに、その形状からしてリーマ
径部がある程度切縁より突出していないかぎりそ
の固定作業は困難であつた。 In other words, conventional electrical root canal length measuring devices are extremely large-scale and large-diameter devices, require a great deal of effort to operate, and the sensor part is fixed to the diameter of the reamer. The reamer is either mouth-shaped or clip-shaped, and must be attached and removed each time for measurement or treatment.Due to its shape, it is difficult to fix it unless the diameter of the reamer protrudes beyond the incisal edge to some extent. It was hot.
また根管長を表示する表示手段にあつても目盛
針によるものがほとんどであり、その判読が容易
ではなく根管長表示の誤視による治療ミスを生ず
るおそれもあつた。 In addition, most of the display means for displaying the root canal length are graduated needles, which are not easy to read and may lead to treatment errors due to misinterpretation of the root canal length display.
また口腔内にて使用されるセンサーは常時消毒
され清潔でなければならないが、従来にあつては
センサー部は他の機器装置類とともに固定式であ
り、センサーの消毒にも困難も極めた。 In addition, sensors used in the oral cavity must be constantly disinfected and clean, but in the past, the sensor part was fixed together with other equipment, making it extremely difficult to disinfect the sensor.
上述した問題点は、根管形成中の歯科用リーマ
に微弱電圧を印加し、前記リーマと口腔粘膜との
間における抵抗値を測定することにより、根管長
及びリーマ到達位置を目視することのできる表示
部を備えてなる根管長測定器本体において、該根
管長測定器本体の一端部には、先端部を薄いＶ字
形状としてなるセンサー部を着脱自在に取付けて
なることを特徴とする根管長測定器により解決さ
れる。
The above-mentioned problem can be solved by applying a weak voltage to a dental reamer during root canal formation and measuring the resistance value between the reamer and the oral mucosa to visually check the root canal length and the reamer arrival position. The main body of the root canal length measuring device is equipped with a display section that can display the root canal length measuring device. This can be solved by using a root canal length measuring device.
以下に本考案の一実施例につき述べる。 An embodiment of the present invention will be described below.
図中１は、本考案の根管長測定器であり、全体
の形状をペン状とし軽量であり、治療時のままの
姿勢で根管長測定ができる等操作性に富むもので
ある。 1 in the figure is the root canal length measuring device of the present invention, which has a pen-like overall shape, is lightweight, and has excellent operability, such as being able to measure root canal length in the same posture as during treatment.
図中２は根管長測定器の一端部に取付けられて
なるアースクリツプ部、３はON、OFFスイツ
チ、４は通電状態を表すランプである。 In the figure, 2 is an earth clip attached to one end of the root canal length measuring device, 3 is an ON/OFF switch, and 4 is a lamp indicating the energized state.
５は液晶表示部であり、発信音とともに根管長
を色別表示するものであり、歯科医師は根管長及
び現在リーマが到達している位置を目視すること
ができる。 Reference numeral 5 denotes a liquid crystal display section, which displays the root canal length in different colors along with a beep, allowing the dentist to visually check the root canal length and the position currently reached by the reamer.
６はセンサー部であり、曲折段差部先端には薄
形Ｖ字形状のセンサー７を突設するとともにこの
センサー７を取付けてなる取付基台８の後端には
前述した根管長測定器の他端部に着脱自在に差し
込まれる差込み部９が取付け形成されている。 Reference numeral 6 denotes a sensor section, in which a thin V-shaped sensor 7 is protruded from the tip of the bending step, and the rear end of the mounting base 8 to which this sensor 7 is attached is equipped with the root canal length measuring device described above. An insertion portion 9 that is detachably inserted into the other end is attached and formed.
次に上記構成に係る本考案の根管長測定器１の
使用の一例につき述べる。またＸ線撮影で、ある
程度の根管長を実測し、リーマに目印を付けた後
歯１０の根管１１を拡大形成してゆく。 Next, an example of the use of the root canal length measuring device 1 of the present invention having the above configuration will be described. Further, a certain root canal length is actually measured using X-ray photography, and the root canal 11 of the rear tooth 10 is enlarged and marked with a reamer.
拡大形成の途中において薄型Ｖ字形のセンサー
７をリーマ径部１２に接触する。さすれば液晶表
示部５には、いまリーマがどこまで差し込まれて
いるかが実施表示される。末だリーマが根尖部ま
で達していないことが判つた時にはさらにそのま
ま根管拡大形成してゆくのである。根管拡大形成
作業時にあつてはセンサー部はリーマ径部よりほ
んの少し離しおくが薄形Ｖ字形状からなるため従
来の固定式のクリツプ型あるいはわに口型と異な
り、取付け取り外し作業等で不要で作業上何ら支
障とならないばかりかリーマがフリーの状態で使
用でき、Ｖ字体にてリーマ回転を支えるという有
用な作用効果をも発揮するものである。 During the enlarging process, the thin V-shaped sensor 7 is brought into contact with the reamer diameter portion 12. Then, the liquid crystal display section 5 will display how far the reamer is currently inserted. When it is determined that the reamer has not reached the root apex, the root canal is further enlarged and formed. During root canal expansion work, the sensor part is kept slightly away from the reamer diameter part, but because it has a thin V-shape, unlike conventional fixed clip type or alligator mouth type, it is unnecessary for installation and removal work, etc. Not only does this not cause any hindrance to work, the reamer can be used in a free state, and the V-shape supports the reamer rotation, which is a useful effect.
以下その使用例につき説明する。 An example of its use will be explained below.
まず、アースクリツプ部２を患者の口腔粘膜に
接触させた状態で、根管を拡大形成中のリーマに
おける径部１２に、センサー部６におけるセンサ
ー７のＶ字部分を接触させる。これにより、リー
マ、アースクリツプ部２間には、患者の根尖部、
口腔粘膜等を介して微弱な交流電流が流れ、この
交流電流値から根管長測定器１内部の演算回路が
リーマ、アースクリツプ部２間における根尖部の
抵抗値を正確に測定し、そしてこの抵抗値と、リ
ーマの尖端が根尖部に到達したときのリーマと口
腔粘膜との間の標準的な電気抵抗値とを比較し、
その結果を液晶表示部５に表示するものである。
例えば、測定した根尖部の抵抗値が標準的な電気
抵抗値よりも大きい場合には、液晶表示部５にお
ける緑色部分を表示して末だリーマが歯根膜腔に
到達していないことを表し、また測定した根尖部
の抵抗値が標準的な電気抵抗値と略同等となつた
場合には、発信音を嗚らすとともに、液晶表示部
５における赤色部分を表示してリーマが歯根膜腔
に到達し、根管長が好適な長さとなつたことを知
らせるものである。 First, with the ground clip section 2 in contact with the patient's oral mucosa, the V-shaped portion of the sensor 7 in the sensor section 6 is brought into contact with the diameter section 12 of the reamer that is enlarging the root canal. As a result, the patient's root apex,
A weak alternating current flows through the oral mucosa, etc., and from this alternating current value, the arithmetic circuit inside the root canal length measuring device 1 accurately measures the resistance value of the root apex between the reamer and the earth clip part 2, and Compare this resistance value with the standard electrical resistance value between the reamer and the oral mucosa when the tip of the reamer reaches the root apex,
The results are displayed on the liquid crystal display section 5.
For example, if the measured resistance value of the root apex is larger than the standard electrical resistance value, a green portion is displayed on the liquid crystal display 5 to indicate that the distal reamer has not reached the periodontal ligament space. In addition, when the measured resistance value of the root apex becomes approximately the same as the standard electrical resistance value, a beep will sound and a red part will be displayed on the liquid crystal display 5 to indicate that the reamer has reached the periodontal ligament. This signal indicates that the root canal has reached a suitable length.
しかして本考案によれば、ペン型タイプで操作
性に優れていることから、根管拡大形成治療に支
障なく正確な根管長を確認しながら安全でスムー
ズな治療作業を行うことができるとともに、とく
に本考案にあつてはセンサー部が従来のクリツプ
形、わに口形との固定方式と異なり薄形Ｖ字形状
をしていることから、リーマ径部に接触するのみ
でよく、治療時リーマが根管内に深く挿入され径
部が極く短くても容易に正確な測定ができるよう
になつたとともに、根管内でリーマがフリーの状
態で使用でき、測定の都度センサーの固定及び取
り外し等の作業は不要となり、またＶ字形状とし
たことから計測時以外はほんの少しリーマより離
しておくことにより、リーマの回転を支えるとい
う有用な効果をも発揮する。
However, according to the present invention, since it is a pen type and has excellent operability, it is possible to perform safe and smooth treatment work while confirming the accurate root canal length without any hindrance to root canal enlargement treatment. In particular, in the case of the present invention, the sensor part has a thin V-shape, unlike the conventional clip-shaped or alligator-shaped fixing methods, so it only needs to come into contact with the reamer diameter part, and the reamer can be easily removed during treatment. The reamer is inserted deeply into the root canal, allowing easy and accurate measurements even if the diameter is extremely short, and the reamer can be used freely within the root canal, making it easier to fix and remove the sensor each time measurements are taken. This eliminates the need for such operations, and since it is V-shaped, it also has the useful effect of supporting the rotation of the reamer by keeping it slightly away from the reamer except when measuring.
またセンサーは差込み式であることからセンサ
ーの消毒及び交換も容易であり、さらには目盛針
表示と異なり液晶表示体としたことから、根管長
の判読がしやすくなるとともに、ひいては高精度
な根管長測定が可能となる等、従来の根管長測定
器の諸問題点を全て解決することができるように
なつた。 In addition, since the sensor is a plug-in type, it is easy to disinfect and replace the sensor, and unlike a scale needle display, it uses a liquid crystal display, which makes it easier to read the root canal length and allows for highly accurate root canal measurement. It has become possible to measure root canal length, and all the problems of conventional root canal length measuring instruments can now be solved.
第１図は本考案の根管長測定器の正面図、第２
図は側面図、第３図は使用状態を示す概略側面図
である。
１……根管長測定器、２……アースクリツプ
部、３……ON，OFFスイツチ、４……ランプ、
５……液晶表示部、６……センサー部、７……セ
ンサー、８……取付基台、９……差込み部、１０
……歯、１１……根管、１２……リーマリーマ径
部。
Figure 1 is a front view of the root canal length measuring device of the present invention, Figure 2
The figure is a side view, and FIG. 3 is a schematic side view showing the state of use. 1... Root canal length measuring device, 2... Earth clip section, 3... ON, OFF switch, 4... Lamp,
5...Liquid crystal display section, 6...Sensor section, 7...Sensor, 8...Mounting base, 9...Insertion section, 10
...Tooth, 11...Root canal, 12...Reamer diameter.
Claims (1)
し、前記リーマと口控粘膜との間における抵抗
値を測定することにより、根管長及びリーマ到
達位置を目視することのできる表示部を備えて
なる根管長測定器本体において、該根管長測定
器本体の一端部には、先端部を薄いＶ字形状と
してなるセンサー部を着脱自在に取付けてなる
ことを特徴とする根管長測定器。 (2) 実用新案登録請求の範囲第１項記載の表示部
は発信音を伴う液晶表示体としたことを特徴と
する根管長測定器。 (3) 実用新案登録請求の範囲第１項記載のセンサ
ー部後方は約120の曲折段差部を有するとを特
徴とする根管長測定器。[Claims for Utility Model Registration] (1) By applying a weak voltage to a dental reamer during root canal formation and measuring the resistance value between the reamer and the oral mucosa, the root canal length and the reach of the reamer can be determined. In the main body of the root canal length measuring device, which is equipped with a display part that allows the position to be visually checked, a sensor part having a thin V-shaped tip is removably attached to one end of the main body of the root canal length measuring device. A root canal length measurement device that is characterized by the following: (2) A root canal length measuring instrument, characterized in that the display section according to claim 1 of the utility model registration claim is a liquid crystal display with a beeping sound. (3) Utility model registration Claim 1: The root canal length measuring instrument characterized in that the rear of the sensor section has approximately 120 bent steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4364786U JPH0315059Y2 (en) | 1986-03-25 | 1986-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4364786U JPH0315059Y2 (en) | 1986-03-25 | 1986-03-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62155828U JPS62155828U (en) | 1987-10-03 |
| JPH0315059Y2 true JPH0315059Y2 (en) | 1991-04-03 |
Family
ID=30860703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4364786U Expired JPH0315059Y2 (en) | 1986-03-25 | 1986-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0315059Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009045376A (en) * | 2007-08-23 | 2009-03-05 | Morita Mfg Co Ltd | Root apex location detector |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5551283B2 (en) * | 2013-01-22 | 2014-07-16 | 株式会社モリタ製作所 | Apical position detector |
| EP3672516A1 (en) * | 2017-08-21 | 2020-07-01 | Dentsply Sirona Inc. | Root canal apex locator |
-
1986
- 1986-03-25 JP JP4364786U patent/JPH0315059Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009045376A (en) * | 2007-08-23 | 2009-03-05 | Morita Mfg Co Ltd | Root apex location detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62155828U (en) | 1987-10-03 |
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