JPS6279038A - Jaw motion drawing apparatus - Google Patents
Jaw motion drawing apparatusInfo
- Publication number
- JPS6279038A JPS6279038A JP60218978A JP21897885A JPS6279038A JP S6279038 A JPS6279038 A JP S6279038A JP 60218978 A JP60218978 A JP 60218978A JP 21897885 A JP21897885 A JP 21897885A JP S6279038 A JPS6279038 A JP S6279038A
- Authority
- JP
- Japan
- Prior art keywords
- muscles
- detection
- jaw movement
- myoelectric potential
- signals
- 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.)
- Pending
Links
- 210000003205 muscle Anatomy 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 30
- 230000003183 myoelectrical effect Effects 0.000 claims description 23
- 238000004364 calculation method Methods 0.000 claims description 20
- 210000003784 masticatory muscle Anatomy 0.000 claims description 6
- 210000001352 masseter muscle Anatomy 0.000 description 11
- 230000008602 contraction Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 8
- 210000000214 mouth Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000018984 mastication Effects 0.000 description 2
- 238000010077 mastication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000003489 abdominal muscle Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 210000004513 dentition Anatomy 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は、歯科領域において、患者の咬交状態、治療等
の保存、入れ歯等の補緻、歯列・下顎突出等の矯正、或
いは外科等の口腔関連諸冶療に際し、治療前後における
顎運動機能の変化を観察し、診断および治療に役立てる
ための塀運動ｆｉ’ｆ記装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is applicable to the field of dentistry, to preserve the patient's occlusal condition, treatment, etc., to supplement dentures, etc., to correct dentition, mandibular protrusion, etc., or to perform surgery. The present invention relates to a wall movement fi'f recording device for observing changes in jaw movement function before and after treatment and for use in diagnosis and treatment during various oral cavity-related treatments.
従来、顎の運動を観察する方法としては、基本的には顎
運動における下顎の実際的変位を種々の形でトレースす
るものが一般的であった。すなわち、変位を直接機械的
にトレースする方法、機械的変位を静電容量、光量若し
くは磁界の変化に置換してトレースする方法、発光ダイ
オードやその他の目印を顎に貼着して写真撮影により顎
運９Ｊ＋を表示する方法等が行われている。Conventionally, the general method for observing jaw movement has been to basically trace the actual displacement of the lower jaw during jaw movement in various ways. These methods include directly tracing the displacement mechanically, tracing the mechanical displacement by replacing it with changes in capacitance, light intensity, or magnetic field, and tracing the jaw by attaching a light emitting diode or other landmark to the jaw and photographing it. There are methods of displaying luck 9J+.
ところで、顎運動に関連する咀噌筋の運動は、大別して
、収縮時に筋の変位が少ない等尺性収縮と、収縮時に筋
の変位が大きい等仮性収縮がある。By the way, the movements of masticatory muscles related to jaw movements can be roughly divided into isometric contractions in which the muscles undergo little displacement during contraction, and isopseudo-contractions in which the muscles undergo large displacements during contractions.
従来の基本的に実際的変位をトレースする方法では、−
ヒ記等張性収１１トこ対してはトレースが可能であるが
、−に記等尺性収縮を表現することができず、正確な顎
運動を把握することができないという問題があった。In the conventional method of essentially tracing practical displacements, −
Although it is possible to trace the isotonic contraction described in (11) above, it is not possible to express the isometric contraction described in (-), and there is a problem that accurate jaw movement cannot be grasped.
また、咀噌運動における三次元的変位をトレースする場
合に、その変位を個々の平面で観察しても、各筋肉の運
動の相関関係を統一的に把握することができないという
問題があった。Furthermore, when tracing three-dimensional displacements during mastication movements, there is a problem in that even if the displacements are observed on individual planes, it is not possible to understand the correlation between the movements of each muscle in a unified manner.
本発明は、上記の問題点を解消するものであって、筋電
位のレベルから正確な顎運動を観察可能にする面運動描
記装置を提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and aims to provide a plane motion depiction device that allows accurate jaw movement to be observed from the level of myoelectric potential.
そのために本発明の顎運動描記装置は、複数チャンネル
の咀翳筋の筋電位を検出する検出手段、該検出手段から
の検出信号に演算を施す演算手段、及び前記検出手段の
検出信号と前記演算手段の出力信号のうら２チャンネル
の信号を選択する選択手段を備え、該選択手段により選
択された２チャンネルの１３号を使って顎運動を２次元
表示することを特徴とするものである。To this end, the jaw movement drawing device of the present invention includes a detection means for detecting the myoelectric potential of the masticatory muscles of a plurality of channels, a calculation means for performing calculations on the detection signal from the detection means, and a detection signal of the detection means and the calculation. The present invention is characterized in that it includes a selection means for selecting the last two channels of signals output from the means, and uses the two channels No. 13 selected by the selection means to display the jaw movement in two dimensions.
本発明の顎運動描記装置では、複数チャンネルの咀哨筋
の筋電位を検出する検出手段、該検出手段からの検出信
号に演算を施す／ｉｉ算手段、及び前記検出手段の検出
信号と前記演算手段の出力信号のうち２チャンネルの信
号を選択する選択手段を備え、該選択手段により選択さ
れた２チャンネルの信号を使って顎運動を２次元表示す
るので、等仮性収縮はもとより等尺性収縮をも正確に表
現することができ、−見するだけで２種類の筋肉の運動
状態の相関関係を正確に把握することができる。In the jaw movement drawing device of the present invention, there is provided a detection means for detecting the myoelectric potential of the masticatory muscles of a plurality of channels, a calculating means for performing calculation on the detection signal from the detection means, and a calculation means for performing calculation on the detection signal of the detection means and the calculation. It is equipped with a selection means for selecting two channels of signals from among the output signals of the means, and the two-channel signals selected by the selection means are used to display the jaw movement in two dimensions, so that not only isometric contraction but also isometric contraction can be performed. - It is possible to accurately represent the correlation between the movement states of two types of muscles just by looking at it.
以下、図面を参照しつつ実施例を説明する。 Examples will be described below with reference to the drawings.
第１図は本発明の顎運りＪ描記装置における制御システ
ムの１実施例構成を示す図、第２図及び第３図は顎運動
の種々の状態を示す筋電位パターン図である。図におい
て、１は側頭筋（閉口筋）、２は咬筋（閉口筋）、３は
項二腹筋（開口筋）、７１は電極、５は増幅、整流、平
滑化装置、６は演算装置、７はｉｚ択装置、８は２次元
表示装置を示す。FIG. 1 is a diagram showing one embodiment of the configuration of a control system in the jaw movement J drawing device of the present invention, and FIGS. 2 and 3 are myoelectric potential pattern diagrams showing various states of jaw movement. In the figure, 1 is the temporalis muscle (mouth closing muscle), 2 is the masseter muscle (mouth closing muscle), 3 is the digastric nuchus muscle (opening muscle), 71 is an electrode, 5 is an amplification, rectification, and smoothing device, 6 is a calculation device, 7 indicates an iz selection device, and 8 indicates a two-dimensional display device.
まず、第１図に示す制御システムについて説明すると、
咀翳筋には表面電極によりａｌｌ＋定可能なものとして
左右の側頭筋ｌ、左右の咬筋２、及び項二１１１筋３の
合計５つの筋があり、この内、側頭筋１と咬筋２は噛む
時に筋肉が収縮する閉口筋で、項二腹筋３は開口筋であ
る。これら左右の側頭筋１、左右の咬筋２、及び項二腹
筋３の５箇所に筋′４位の検出手段として電極４．４、
・・・を貼着して顎運動により生しる筋電位を険出し、
その検出信号を増幅、整流、平滑化装置５．５、・・・
においてそれぞれ増幅、整流、平滑化した後、直接、選
択装置７／ ７に送る一方、演算装置６を経由して選択
装置η７に送っている。演算装置６は、人力される５箇
所の筋電位の検出信号について、相互に加算、減算、乗
算、その他の演算を施すものである。この場合の演算に
は、例えば左右の側頭筋ｌの筋電位の検出信号間におけ
る加算、減算、乗算、或いは、左右の咬筋２の筋電位の
検出信号間における加算、減算、乗算等があるが、勿論
その外にも観察する内容に応じて種々の筋電位の組み合
わせによる演算が必要となる。また、例えば左右の咬筋
２の筋電位の検出信号を加算して得た信号と項二腹筋３
の筋電位の検出信号のように、そのままの信号レベルで
比較するには不適当なものがある。First, the control system shown in Figure 1 will be explained.
There are a total of five muscles in the masticatory muscles that can be determined using surface electrodes: the left and right temporalis muscles L, the left and right masseter muscles 2, and the nuchal 2111 muscles 3. Of these, temporalis muscles 1 and masseter muscles 2 is the mouth-closing muscle that contracts when chewing, and the digastric nuchus muscle 3 is the mouth-opening muscle. Electrodes 4.4 are placed at five locations on these left and right temporalis muscles 1, left and right masseter muscles 2, and digastric muscles 3 as muscle position detection means.
...is attached to expose the myoelectric potential generated by jaw movement,
The detection signal is amplified, rectified, and smoothed by a device 5.5,...
After being amplified, rectified, and smoothed, the signals are sent directly to the selection device 7/7, while being sent via the arithmetic device 6 to the selection device η7. The arithmetic device 6 performs addition, subtraction, multiplication, and other operations on the detected signals of myoelectric potentials at five points manually input. In this case, calculations include, for example, addition, subtraction, and multiplication between the detection signals of the myoelectric potential of the left and right temporalis muscles 1, or addition, subtraction, and multiplication between the detection signals of the myoelectric potential of the left and right masseter muscles 2. However, of course, calculations using various combinations of myoelectric potentials are required depending on the content to be observed. In addition, for example, a signal obtained by adding the detected signals of the myoelectric potential of the left and right masseter muscles 2 and the digastric muscle 3
There are some signals, such as myoelectric potential detection signals, that are inappropriate for comparison at their original signal levels.
このような場合には、二次関数や指数関数、その他の関
数を使った補正演算を施したり、ある係数を掛けたりす
ることが必要となるが、演算装置６は、このような補正
演算も必要に応じて行うものである。なお、この補正演
算は、関数によらず実験データに基づく筋電位の検出信
号レベルと顎に働く力の強さとの対応表により補正を行
うようにしてもよいことはいうまでもない。選択装置７
は、増幅、整流、平滑化装置５．５、・・・から入力さ
れる信号と、演算装置６から入力される信号のうら２チ
ャンネルを選択して出力するものであり、その選択とし
ては、例えば、左右の咬筋２の筋電位（３号を選択する
とか、左右の咬筋２の筋電位を加算した信号とツユ腹筋
３の筋電位信号を１バ択するとか、その他、種々の組み
合わせが考えられる。In such a case, it is necessary to perform a correction calculation using a quadratic function, an exponential function, or another function, or to multiply by a certain coefficient, but the calculation device 6 can also perform such correction calculations. This will be done as necessary. It goes without saying that this correction calculation may be performed using a correspondence table between the detected signal level of the myoelectric potential and the strength of the force acting on the jaw based on experimental data, without depending on the function. Selection device 7
selects and outputs the last two channels of the signal input from the amplification, rectification, and smoothing devices 5, 5, . . . and the signal input from the arithmetic device 6, and the selection is as follows. For example, various combinations can be considered, such as selecting the myoelectric potential of the left and right masseter muscles 2 (number 3), selecting the signal obtained by adding the myoelectric potentials of the left and right masseter muscles 2, and the myoelectric potential signal of the abdominal muscle 3. It will be done.
この出力信号は２次元表示装置８に送られ、画面上に必
要なりサージユバターンを表示するものである。This output signal is sent to the two-dimensional display device 8, and the necessary surge pattern is displayed on the screen.
第２図は選択装置７により、左右の咬筋２の筋電位信号
を選択した場合の各種のりサージユバターンを示すもの
であり、（イ）は正常な咀哨の状態、（ロ）は片側だけ
の筋が使用されている状態、（ハ）は筋力が低下してい
る状態、（ニ）は咀ｌΔがスムーズに行われていない状
態を示している。Figure 2 shows various glue surge patterns when the myoelectric potential signals of the left and right masseter muscles 2 are selected by the selection device 7, (a) shows normal masticatory state, and (b) shows only one side. (c) shows a state in which muscle strength is decreased, and (d) shows a state in which mastication lΔ is not performed smoothly.
第３図は左右の咬筋２の筋電位を加算した１８号と７二
腹筋３の筋電位信号を選択した場合の各種のりサージユ
バターンを示すもので、（イ）は正常な咀哨の状態、（
ロ）は開口動作は正常で閉口動作に問題がある状態、（
ハ）は閉口＋）＋作は正常で開口動作に問題がある状態
、（ニ）は開口と閉口とがスムーズに切り換わらない状
態を示している。Figure 3 shows various glue surge patterns when the myopotential signals of No. 18 and No. 7 digastric muscles 3, which are the sum of the myopotentials of the left and right masseter muscles 2, are selected, and (a) shows the normal masticatory state. ,(
B) is a state where the opening operation is normal but there is a problem with the closing operation, (
C) shows a state in which the mouth is closed +) + movement is normal but there is a problem in the opening operation, and (d) shows a state in which the opening and closing are not smoothly switched.
なお、以上に説明したシステムは、アナログ回路により
構成してもよいし、Ａ／Ｄ変換器を通して検出信υをデ
ジタル信号に変換し、それ以降ををデジタル回路で構成
してもよい。The system described above may be configured by analog circuits, or the detection signal υ may be converted into a digital signal through an A/D converter, and the subsequent components may be configured by digital circuits.
以上の説明から明らかなように、本発明によれば、複数
チャンネルの咀哨筋の筋電位を検出する検出手段、該検
出手段からの検出信号に演算を施す演算手段、及び前記
検出手段の検出１８号とｎｉＩ記演算演算手段カイ５号
のうち２チャンネルの（Ａ号を選択する選択下段を備え
、該選択手段により選択された２チャンネルの信号を使
って顎運動を２次元表示するので、筋電位信号の種々の
組み合わせによるリサージュパターンを表示することが
でき、−見するだけで２種類の筋肉の運動状止の相関関
係を正確に把握することができる。従って、等張性収縮
はもとより等尺性収縮をも正確に表現することができる
ので、従来の問題点を解消し、正確な顎運動を観察、診
断を行うことができる。As is clear from the above description, according to the present invention, there is provided a detection means for detecting the myoelectric potential of a plurality of channels of masticatory muscles, a calculation means for performing a calculation on a detection signal from the detection means, and a detection means for the detection of the detection means. 18 and niI arithmetic operation means Chi No. 5, it is equipped with a selection lower stage for selecting (A) of two channels, and the jaw movement is displayed two-dimensionally using the signals of the two channels selected by the selection means. It is possible to display Lissajous patterns based on various combinations of myoelectric potential signals, and it is possible to accurately grasp the correlation between the movement states of two types of muscles just by looking at them. Since it is also possible to accurately represent isometric contractions, conventional problems can be resolved and accurate jaw movement can be observed and diagnosed.
第１図は本発明の顎運動描記装置における制御システム
の１実施例を示す図、第２図及び第３図は顎運動の種々
の状態を示す筋電位パターン図である。
１・・・側頭筋（閉口筋）、２・・・咬筋（閉口筋）、
３・・・７二腹筋（開口筋）、４・・・電極、５・・・
増幅、整流、平滑化装置、６・・・演算装置、７・・・
選択装置、８・・・２次元表示装置
出 願 人 工業技術院長（外１名）
復代理人 弁理士 阿 部 龍 吉
（ロ）
（ハ）（ニ）
第３図
（０）（ハ）FIG. 1 is a diagram showing one embodiment of the control system in the jaw movement drawing device of the present invention, and FIGS. 2 and 3 are myoelectric potential pattern diagrams showing various states of jaw movement. 1... Temporalis muscle (mouth closing muscle), 2... Masseter muscle (mouth closing muscle),
3...7 digastric muscle (opener muscle), 4...electrode, 5...
Amplification, rectification, smoothing device, 6... Arithmetic device, 7...
Selection device, 8...2D display device Applicant: Director of the Agency of Industrial Science and Technology (1 other person) Sub-agent: Patent attorney Ryukichi Abe (Ro)
(c) (d) Figure 3 (0) (c)
Claims (3)
手段、該検出手段の検出信号に演算を施す演算手段、及
び前記検出手段の検出信号と前記演算手段の出力信号の
うち２チャンネルの信号を選択する選択手段を備え、該
選択手段により選択された２チャンネルの信号を使って
顎運動を２次元表示することを特徴とする顎運動描記装
置。(1) Detection means for detecting the myoelectric potential of the masticatory muscles of multiple channels, calculation means for performing calculations on the detection signal of the detection means, and signals of two channels among the detection signal of the detection means and the output signal of the calculation means 1. A jaw movement depiction device comprising a selection means for selecting a jaw movement, and displaying jaw movement two-dimensionally using two-channel signals selected by the selection means.
選択することを特徴とする特許請求の範囲第１項記載の
顎運動描記装置。(2) The jaw movement depiction device according to claim 1, wherein the selection means selects the detection signal of the myoelectric potential of the left and right mouth closing muscles.
演算した演算手段の出力信号と開口筋の筋電位の検出信
号とを選択することを特徴とする特許請求の範囲第１項
記載の顎運動描記装置。(3) The selection means selects the output signal of the calculation means that calculates the myoelectric potential detection signals of the left and right mouth-closing muscles and the detection signal of the myoelectric potential of the mouth-opening muscles. The described jaw movement drawing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60218978A JPS6279038A (en) | 1985-10-01 | 1985-10-01 | Jaw motion drawing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60218978A JPS6279038A (en) | 1985-10-01 | 1985-10-01 | Jaw motion drawing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6279038A true JPS6279038A (en) | 1987-04-11 |
Family
ID=16728345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60218978A Pending JPS6279038A (en) | 1985-10-01 | 1985-10-01 | Jaw motion drawing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6279038A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010082226A (en) * | 2008-09-30 | 2010-04-15 | Terumo Corp | Measurement apparatus, information processing apparatus, and information processing method |
| JP2010082227A (en) * | 2008-09-30 | 2010-04-15 | Terumo Corp | Measurement apparatus, information processing apparatus, and information processing method |
| WO2019230528A1 (en) * | 2018-05-30 | 2019-12-05 | 日本電信電話株式会社 | Learning model-generating apparatus, method, and program for assessing favored chewing side as well as determination device, method, and program for determining favored chewing side |
| JP2020175280A (en) * | 2018-11-29 | 2020-10-29 | 株式会社村田製作所 | Muscle activity observation device, muscle activity observation system, and muscle activity observation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997647A (en) * | 1982-11-02 | 1984-06-05 | マイオ−トロニツクス・リサ−チ・インコ−ポレ−テツド | Lower jaw electromyogram meter |
-
1985
- 1985-10-01 JP JP60218978A patent/JPS6279038A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997647A (en) * | 1982-11-02 | 1984-06-05 | マイオ−トロニツクス・リサ−チ・インコ−ポレ−テツド | Lower jaw electromyogram meter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010082226A (en) * | 2008-09-30 | 2010-04-15 | Terumo Corp | Measurement apparatus, information processing apparatus, and information processing method |
| JP2010082227A (en) * | 2008-09-30 | 2010-04-15 | Terumo Corp | Measurement apparatus, information processing apparatus, and information processing method |
| WO2019230528A1 (en) * | 2018-05-30 | 2019-12-05 | 日本電信電話株式会社 | Learning model-generating apparatus, method, and program for assessing favored chewing side as well as determination device, method, and program for determining favored chewing side |
| JP2019205780A (en) * | 2018-05-30 | 2019-12-05 | 日本電信電話株式会社 | Learning model generation device for determining chewing side and method and program therefor, and chewing side determination device and method and program therefor |
| JP2020175280A (en) * | 2018-11-29 | 2020-10-29 | 株式会社村田製作所 | Muscle activity observation device, muscle activity observation system, and muscle activity observation method |
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