KR20140038885A - Bite force measurement system - Google Patents

Abstract

The present invention relates to a bite force measurement device and, more specifically, to a device for measuring bite force of teeth capable of accurately measuring dynamic bite force of teeth in real time using a strain gauge. In the present invention, a bite force measurement system includes: a bite force measurement device which is put into the mouth of an examinee to measure bite force; and a signal analysis unit which analyzes a bite force signal measured by the bite force measurement device. The bite force measurement device includes: a C-shaped frame which is placed at one end of the bite force measurement device; an in-mouth insertion unit which includes a strain gauge sensor which detects the bite force signal when inserted inside the mouth and is placed at both sides of the C-shaped frame; a signal transmission unit which is placed at the other end of the bite force measurement device, is connected to the C-shaped frame through a connection unit, and transmits the bite force signal detected by the in-mouth insertion unit to the signal analysis unit; and an electromyogram detection unit which includes an electromygram electrode, places the electromygram electrode onto both cheeks of the examinee, and detects an electromygram signal when the examinee bites. [Reference numerals] (AA) Temporalis muscle; (BB) Masseter muscle; (CC) Upper and lower lateral pterygoid; (DD) Part of the temporal bone is removed

Description

[0001] Bite force measurement system [0002]

The present invention relates to an occlusal force measuring system, and more particularly, to an occlusal force measuring system that detects a dynamic occlusal force of a tooth simultaneously using a strain gauge and a near- Measurement system.

Recently, as more people are receiving implant treatments to replace their teeth, more and more people are complaining of side effects, and there are many cases of infection, inflammation, dropout and re-surgery, screw fracture and prosthesis dropout, and complaints of maxillary fistula. Many times. When the nerves related to the teeth are damaged, there are many cases that cannot be undone again, and if the gum bones are damaged, re-treatment may be difficult, so be careful.

In order to use the implant for a long time, it is important to plant it well. The most important thing to care about is precise and safe placement through precise measurement of occlusal force, and it is important to make and plant artificial teeth in consideration of the interlocking state between artificial teeth and existing teeth.

In particular, for more precise measurement of the occlusal force, it is necessary to measure the occlusal force according to the movement of the teeth. For this purpose, it is necessary to detect the EMG of the masticatory muscle together with the measurement of the occlusal force.

Masticatory muscles (chewing muscles) are muscles that show strong contractile force to chew food, and one side of the muscle is attached to the head bone and the other to the lower jaw to move the lower jaw. That is, as illustrated in the masticatory muscle (chewing muscle) of FIG. 1 (extracted from the chewing muscle of Naver Knowledge Encyclopedia), the masticatory muscle (chewing muscle) has both jawbone angles of the lower jaw from both side temples of the head to the inside of the cheeks of the face. It is located up to the site, and the masticatory muscle of the temple is called the temporal muscle, and the muscles located at both jawbone angles of the lower jaw through the inside of the ball are called sesame root.

The occlusal imbalance of teeth affects the jaw joints, leading to joint noise and abnormal lower jaw movement, resulting in discord and cramping of chewing muscles resulting in pain and opening disorders. Occlusal force has also been reported to cause changes in facial growth and morphology and temporomandibular condyle. In addition, the evaluation of occlusion is clinically important for all masticatory disorders, including temporomandibular disorders.

Conventional occlusal force measuring device is made to detect the distribution of the occlusal contact point through the piezoelectric film (Pressure sensitive film) in the mouth, it is reported that the sensitivity and reproducibility is low, showing less occlusal contact than inspected by the articulation paper. In addition, the pressure sensitive film can record the position and the occlusal force of the occlusal contact point, but can interfere with the lower jaw closure, making accurate measurement difficult.

Most studies on occlusal contact consider only limited movements when the lower jaw moves in the vertical direction when the lower jaw is stationary. However, during the actual chewing exercise, the lower jaw dynamic movement, such as the side movement, the inner movement, lifting, nagging occurs.

Therefore, there is a need for an occlusal force measuring device capable of accurately recording a dynamic state of tooth contact.

In the prior art, Korean Patent Publication No. 10-2011-0067682 can measure the occlusal force of the teeth in real time, and relates to an apparatus and method for measuring the occlusal force of the tooth that can be objectiveized and quantified before and after dental treatment. The method of measuring tooth occlusal force for continuously measuring tooth occlusal force of a patient includes attaching a strain gauge to a side of a target tooth and measuring signals generated from the strain gauge in response to repeated masticatory of the target tooth. Providing a, and calculating the occlusal force acting on the target tooth using the measurement signal. However, in the case of the present invention, since only the occlusal force is measured, it is not possible to know in what state the signal is generated or whether it is just noise, and thus cannot be said to have high accuracy.

Therefore, there is a need for a means for detecting the muscular mobility of the masticatory muscle and the occlusal force at the same time to detect and synchronize the dynamic occlusal force synchronized with the EMG of the masticatory muscle.

SUMMARY OF THE INVENTION The object of the present invention is to provide a masticatory force measuring unit using a strain gauge and a masticatory EMG detecting unit to simultaneously detect a mobility of a masticatory muscle and an occlusal force to detect and output a dynamic occlusal force synchronized with an EMG of a masticatory muscle, And an object of the present invention is to provide an occlusal force measuring system capable of more accurately measuring the dynamic occlusal force of a tooth in real time.

In order to solve the above-described problem, an occlusal force measuring apparatus comprising an occlusal force measuring apparatus mounted in an oral cavity of a subject to measure an occlusal force and a signal analyzing section for analyzing an occlusal force signal detected from the occlusal force measuring apparatus, A C-shaped frame positioned at one end of the occlusal force measuring device and made of a C-shaped frame; Equipped with a strain gauge sensor for detecting the occlusal force signal when inserted into the oral cavity, located in both ends of the C-shaped frame, the intraoral insertion unit; And a signal transmission unit which is located at another end of the bite force measuring apparatus and is connected to the C-shaped frame by a connection unit and wirelessly transmits the mastication signal detected by the intraoral insertion unit to the signal analysis unit.

An apparatus for measuring an occlusal force includes: an occlusal auxiliary part made of a synthetic resin material harmless to a human body, the occlusion auxiliary part surrounding the oral insertion part; It is located between the intraoral insertion portion and the occlusal auxiliary portion, the oral insertion portion cover to cover the oral insertion portion; further comprises.

An apparatus for measuring an occlusal force includes an electromyogram detection unit that has an electromyogram electrode and attaches an electromyogram electrode to a subject's cheeks and detects an electromyogram signal during chewing; And an electromyogram signal preprocessing unit for amplifying the electromyogram signal received from the electromyogram detection unit and eliminating noise, wherein the electromyogram detection unit is located at one side of the signal transmission unit or embedded in the signal transmission unit, The EMG signal is wirelessly transmitted to the signal analyzer through the signal transmitter.

The occlusal force measuring apparatus further includes an occlusal force signal preprocessing section located in the mouth insertion section or the signal transmission section, for amplifying the occlusal force signal received from the strain gage sensor and removing noise.

The signal transmitting unit includes a data collecting unit that converts an occlusal force signal received from the bite force signal preprocessing unit or an electromyogram signal received from the electromyogram signal preprocessing unit into a digital signal; And a transmitter for wirelessly transmitting an occlusal force signal or an electromyogram signal output from the data collecting unit to the signal analyzer.

Further, the present invention provides an occlusal force measuring system comprising: an occlusal force signal detector having at least one strain gauge sensor in each of a left oral cavity insertion portion and a right oral cavity insertion portion and inserted into the oral cavity to detect an occlusal force signal during chewing; An electromyogram detection unit having an electromyogram electrode and mounting an electromyogram electrode on a cheek of an examinee to detect an electromyogram signal when chewing; A data collecting unit for converting an occlusal force signal outputted from the occlusal force signal detecting unit and an electromyogram signal outputted from the electromyogram detecting unit into a digital signal; A transmitter for wirelessly transmitting an occlusal force signal or an EMG signal received from the data collecting unit; And an arithmetic processing unit for receiving the bite force signal or the electromyogram signal wirelessly transmitted from the transmitting unit through the receiving unit and outputting the same to the display unit.

The calculation processing unit obtains the sum of the left occlusal force signals, which is a value obtained by summing the occlusal force signals detected from the strain gauge sensors positioned at the left mouth insertion unit, and calculates the sum of the left and right occlusal force signals, And the sum of the right bite force signals obtained by summing the bite force signals detected from the respective strain gauge sensors located in the right mouth insertion section is obtained and the right side bite force value obtained by averaging the sum of the right side bite force signals The signal value is obtained, and the left bite force signal value and the right bite force signal value are added to obtain the total bite force value.

If the average detection mode of the specific section is set, the operation unit receives the start point and the end point set by the user from the key input unit, calculates the average of the total occlusal force values during the interval between the received start point and the end point, and displays the average occlusal force as the total occlusal force value. Output as negative.

The graph for the total bite force signal values is output to the display unit, and when the user selects the start point and the end point on the graph, the calculation processing unit recognizes the selected start point and the end point as the start point and the end point for obtaining the average bite force value.

The arithmetic processing unit compares the left masticatory muscle EMG signal detected from the electromyogram electrode positioned in the left ball among the electromyogram electrodes mounted on the subject's neck with the pre-stored authoring threshold value, and detects a time point at which the authoring start threshold value becomes larger or equal The right masticatory muscle EMG signal detected from the electromyographic electrode located on the right ball among the electromyographic electrodes mounted on the subject's right cheek is compared with the pre-stored authoring threshold value, The point of time when the beam starts to become larger or equal is detected, and it is set as the starting point of the work of the right masticatory muscle EMG signal.

The operation processing unit detects the point at which the end of the mastication end threshold becomes smaller or equal, and compares the left masticatory muscle EMG signal after the start of the mastication of the left masticatory muscle EMG signal, by comparing the left masticatory muscle EMG signal with a previously stored mastication end threshold. After the start of the mastication of the right masticatory muscle EMG signal, the right masticatory muscle EMG signal is compared with a previously stored mastication end threshold to detect a point at which the end of mastication threshold becomes smaller or equal to the same. At the end of the work.

The arithmetic processing unit detects an average of the left occlusal force signal from the start of the work of the left masticatory muscle EMG signal to the end of the masticatory function or detects an average of the right occlusal force signal from the start of the masticatory muscle EMG signal can do.

From the one of the starting time of the authoring start of the left masticatory muscle EMG signal or the authoring start time of the right masticatory muscle EMG signal to the one of the authoring end time of the left masticatory muscle EMG signal or the authoring end time of the right masticatory muscle EMG signal, Can be detected.

In addition, a method of driving an occlusal force measuring system of the present invention includes: a signal receiving step of receiving an occlusal force signal from strain gauge sensors positioned respectively in a left mouth insertion portion and a right mouth insertion portion; The calculation unit obtains the left occlusal force signal value, which is an average value of the occlusal force signals detected from the strain gauge sensors located at the left mouth insertion unit, and the occlusal force detected from the strain gauge sensors located at the right mouth insertion unit. Calculating a left occlusal force signal value, which is a value obtained by averaging signals; A total bite force value detecting step of summing the left bite force signal value and the right bite force signal value to obtain the total bite force signal value.

And outputting the left bite force signal value, the right bite force signal value, the total bite force signal value and the total bite force signal mean value to the display unit and the memory unit after the total bite force value detection step.

A detection interval input step of receiving a detection start point and a detection end point set by the user through a key input unit if a specific interval average detection mode is set after the total bite force value detection step; Detecting the average value of the total bite force signal between the detection start point and the detection end point received in the detection interval input step and outputting the detected mean value to the display unit or the memory unit.

In the signal receiving step, the arithmetic processing unit receives the occlusal force signal from the strain gauge sensors and detects the left masticatory muscle electromyogram signal detected from the electromyogram electrode located in the left ball and the right masticatory muscle electromyogram signal detected from the electromyographic electrode located in the right ball, , And after detecting the total amount of occlusal force value, detecting a time point at which the start-of-work threshold value becomes equal to or greater than the previously stored start threshold value in the left masticatory muscle EMG signal and the right masticatory muscle EMG signal, Detecting step; A mastication end point detection step of detecting, at the left masticatory muscle EMG signal and the right masticatory muscle EMG signal, a time point at which the mastication start threshold becomes smaller or equal to the pre-stored mastication end threshold value; Detecting an average value of the total amount of the occlusion force from the authoring start point detected at the authoring start point detecting step to the authoring end point detected at the authoring end point detecting step.

According to the present invention, there is provided an occlusal force measuring system comprising a bending force measuring unit using a strain gauge and a masticatory EMG detecting unit to simultaneously detect a mobility of a masticatory muscle and an occlusal force to detect and output a dynamic occlusal force synchronized with an EMG of a masticatory muscle, The dynamic bite force of the teeth can be measured more accurately in real time.

The present invention is capable of measuring an average occlusal force of various time intervals required by a user (medical professional), and is also made easy to use even for a beginner.

It is explanatory drawing of the general chewing root of FIG.
Fig. 2 is an explanatory diagram for schematically explaining an apparatus for measuring an occlusal force according to the present invention.
3 is a block diagram schematically illustrating a configuration of an occlusal force measurement system according to an embodiment of the present invention.
FIG. 4 is a use state diagram of the occlusal force measurement system of FIG. 3; FIG.
5 is a block diagram schematically illustrating a configuration of an occlusal force measurement system according to another embodiment of the present invention.
6 is an explanatory view for explaining the position of the electromyogram electrode applied to FIG.
FIG. 7 is an explanatory view for explaining the use state of the occlusal force measurement system of FIG. 5; FIG.
FIG. 8 is an explanatory diagram for explaining the analysis of the occlusal force on the basis of the masticatory muscles in the arithmetic processing unit of FIG. 5; FIG.
Fig. 9 is a flowchart for explaining the operation of the arithmetic processing unit of the occlusal force measurement system of Fig. 3;
Fig. 10 is a flowchart for explaining the operation of the arithmetic processing unit of the occlusal force measuring system of Fig. 5;

Hereinafter, an occlusal force measuring system of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a schematic view for explaining an occlusal force measuring apparatus of the present invention. The occlusal force measuring apparatus 10 includes a C-shaped frame 110, a mouth insertion portion 120, an occlusal auxiliary portion 130, a connecting portion 150, And a signal transmission unit 160.

C-type frame 110 is a frame forming a C shape, the oral insertion part 120 is mounted at both ends.

Oral insertion portion 120 is made of a triangular shape, is mounted on both ends of the C-shaped frame 110, the strain gauge sensor 107 is mounted on the inside, detects the occlusal force signal during mastication. The oral insertion part 120 is covered by the oral insertion part cover 140 and is surrounded by the occlusal assisting part 130 on the outside thereof. One or more strain gauge sensors 107 may be provided at each of the oral insertion parts 120 positioned at both ends of the C-shaped frame 110.

Occlusal aid 130 is a soft material, made of a synthetic resin harmless to the human body, as a means to surround the oral insertion portion 120, the subject facilitates the occlusal operation of the teeth, strain gauge sensor 107 It can protect against excessive force transfer. The occlusal assistant 130 may be a synthetic resin material including medical silicone or medical rubber. Alternatively, the occlusal assisting unit 130 may be a gum, which is a material having elasticity including biochemical natural rubber and synthetic rubber, which is harmless to the human body.

The oral insertion part cover 140 is a means for covering the oral insertion part 120 and protecting the oral insertion part 120. The mouthpiece cover 140 and the occlusal support 130 may be used for single use.

The connection unit 150 is a means for connecting the mouth insertion unit 120 and the signal transmission unit 160. The connection unit 150 transmits the bite force signal detected by the mouth insertion unit 120 to the signal transmission unit 160 Signal line is mounted.

The signal transmission unit 160 transmits the occlusion force signal received from the connection unit 150 to the signal analysis unit 200 on the outside in a wireless or wired manner.

FIG. 3 is a block diagram schematically illustrating a configuration of an occlusal force measuring system according to an embodiment of the present invention, and FIG. 4 is an explanatory view illustrating a use state of the occlusal force measuring system of FIG.

The occlusal force measurement system of the present invention includes an occlusal force measurement apparatus 10 and a signal analysis unit 200. The occlusal force measurement apparatus 10 includes an occlusal force signal detection unit 105, an occlusal force signal preprocessing unit 170, A transmitter 180, and a transmitter 190.

The occlusal force signal detecting unit 105 includes one or more strain gauge sensors 107 mounted on the oral insertion unit 120 to detect the occlusal force signal. The bite force signal detecting unit 105 includes a sensor drive unit (not shown) for driving the strain gage sensor 107.

The strain gauge sensor 107 is made of a piezoelectric element and is a means for detecting the bite force signal at the time of chewing. The strain gauge sensor 107 may be made of any piezoelectric element, and for example, may use PS-C miniature pressure sensors of National Instruments.

The sensor driver includes a bridge circuit (not shown) for detecting a signal from the strain gauge sensor 107. In general, it is well known to use a bridge circuit to drive a strain gauge sensor, and a detailed description thereof will be omitted.

The bite force signal preprocessor 170 amplifies the bite force signal received from the bite force signal detector 105 and removes noise.

The bite force signal detection unit 105 and the bite force signal preprocessor 170 may be located in the oral cavity insertion unit 120 or the signal transmission unit 160 of the occlusal force measurement apparatus 10.

The data collecting unit 180 converts the signal received from the bite force signal preprocessing unit 170 into a digital signal and converts the digital signal into a signal to be transmitted to the signal analyzer 200. The data collecting unit 180 may comprise a microprocessor or a microcontroller including an A / D converter.

The transmitting unit 190 transmits the occlusion force signal received from the data collecting unit 180 to the signal analyzing unit 200 wirelessly or by wire.

The data collecting unit 180 and the transmitting unit 190 may be located in the signal transmitting unit 160 of the occlusal force measuring apparatus 10. [

The signal analyzer 200 includes a receiver 210, an operation processor 250, a display 260, a memory 270, and a key input unit 280.

The receiving unit 210 receives an occlusal force signal from the occlusal force measurement apparatus 10 wirelessly or by wire and transmits it to the arithmetic processing unit 250.

The arithmetic processing unit 250 stores the occlusion force signal in the memory unit 270 and outputs it to the display unit 260. [

The calculation processing unit 250 calculates the occlusal force signals detected from the strain gage sensors 107 positioned at the mouth insertion portions 120 at both ends of the C-type frame 110, that is, at the left and right mouth insertion portions 120 .

The calculation processing unit 250 obtains the sum of the left occlusal force signals, which are values obtained by summing the respective occlusion force signals respectively detected from the strain gauge sensors 107 placed in the left mouth insertion unit 120, And obtains the left occlusal force signal value which is a value obtained by averaging the summed values.

The calculation processing unit 250 obtains the sum of the right occlusal force signals which are values obtained by summing the respective occlusion force signals respectively detected from the strain gauge sensors 107 placed on the right mouth insertion unit 120, The right bite force signal value obtained by averaging the summed values is obtained.

The operation processing unit 250 obtains the total value of the total amount of the bite force by adding the left bite force signal value and the right bite force signal value, and obtains the average value of the total bite force signal which is averaged over a predetermined interval. That is, when the user (health care professional) sets a specific section average detection mode, the set value is received through the key input unit 280, and if the specific section average detection mode is set, ), And obtains an average value of the total bite force signal signals averaged over a specific section, a mean value of the left bite force signal averaged over a specific section, or a mean value of the right bite force signal averaged over a specific section.

The operation processing unit 250 outputs the left bite force signal value, the right bite force signal value, the total bite force signal value, and the total bite force signal mean value to the display unit 260 and the memory unit 270. The operation processing unit 250 can analyze the authoring signal in conjunction with an EMG signal received from an EMG detecting unit (not shown) that detects an EMG of a muscle associated with the masticatory muscle, which will be described later.

The display unit 260 receives the output signal from the operation processing unit 250 and displays it.

The memory unit 270 receives the output signal from the arithmetic processing unit 250 and stores it.

The key input unit 280 includes a start / end switch for occlusal force measurement, a specific section average detection mode, and the like.

FIG. 5 is a block diagram schematically illustrating the configuration of an occlusal force measuring system according to another embodiment of the present invention, FIG. 6 is an explanatory view for explaining positions of electromyographic electrodes applied to FIG. 5, FIG. 8 is an explanatory diagram for explaining the analysis of the occlusal force on the masticatory muscle in the calculation processing unit of FIG. 5; FIG.

The bite force signal detecting unit 105 includes a strain gage sensor 107 and a sensor drive unit (not shown).

The bite force signal preprocessing unit 170 amplifies the bite force signal received from the bite force signal detection unit 105, removes noise, and transmits the bite force signal to the data collection unit 180.

The bite force signal detecting unit 105 and the bite force signal preprocessing unit 170 are referred to as an occlusal force measuring unit 100.

The electromyogram signal detecting unit 305 includes an electromyogram electrode 307 composed of a surface electrode (in particular, a patch type surface electrode), and is mounted on the subject's cheek, as shown in Fig.

The electromyogram signal preprocessing unit 370 amplifies each of the electromyogram signals received from the electromyogram electrode 307 mounted on the patient's cheeks, removes noise, and transmits the electromyogram signal to the data collection unit 180. [ The electromyogram signal preprocessing unit 370 may be located in the signal transfer unit 160 of the occlusal force measurement apparatus 10 and the output of the electromyogram electrode 307 may be placed in the signal transfer unit 160 of the occlusal force measurement apparatus 10 The signal may be transmitted to the electromyogram signal preprocessing unit 370 located in the signal transmission unit 160.

The data collecting unit 180 converts the occlusion force signal received from the occlusal force signal preprocessing unit 170 into a digital signal and converts the digital signal into a signal for transmission to the signal analyzer 200. The signal analyzer 180 transmits, And converts the electromyogram signal received from the electromyogram signal preprocessing unit 370 into a digital signal and converts the electromyogram signal into a signal to be transmitted to the signal analyzer 200. The signal transmitter 200 transmits the signal to the signal analyzer 200, To the analysis unit (200). The data collecting unit 180 may comprise a microprocessor or a microcontroller including an A / D converter.

The transmitting unit 190 transmits the occlusal force signal and the electromyogram signal received from the data collecting unit 180 to the signal analyzer 200 wirelessly or by wire. The data collecting unit 180 and the transmitting unit 190 may be located in the signal transmitting unit 160 of the occlusal force measuring apparatus 10. [

The signal analyzer 200 includes a receiver 210, an operation processor 250, a display 260, a memory 270, and a key input unit 280.

The receiving unit 210 receives the occlusal force signal and the electromyogram signal from the occlusal force measurement apparatus 10 wirelessly or wire, and transmits the same to the operation processing unit 250. [

The arithmetic processing unit 250 stores the received bite force signal and the electromyogram signal in the memory unit 270 and outputs it to the display unit 260.

The calculation processing unit 250 obtains the sum of the occlusal force signals on the left side, the sum of the occlusal force signals on the right side, the total occlusal force signal value, the left occlusal force signal value, the right occlusal force signal value, and the total occlusal force signal average value, and the display unit 260 And output to the memory unit 270.

The arithmetic processing unit 250 receives the left masticatory muscle electromyogram signal received from the electromyogram electrode 307 mounted on the patient's neck, that is, the electromyogram signal received from the left electromyogram electrode 307 and the electromyogram signal received from the right electromyogram electrode 307 And outputs the right masticatory muscle EMG signal to the display unit 260. [ The left masticatory muscle EMG signal and the right masticatory EMG signal are compared with the previously stored mental threshold value to detect a point of time when the first mental threshold threshold value is equal to or greater than the first mental threshold EMG signal and the left masticatory muscle EMG signal and the right masticatory EMG signal The point of time at which the first end-of-production threshold value is equal to or smaller than the first end-of-production threshold value is detected as the end point of the authoring, and the start and end points of the authoring are shown in FIG. The total average occlusal force between the start of authoring and the end of authoring is detected. In addition, through the authoring start time and the writing end time, the operation processing unit 250 may detect the authoring time and the maximum occlusal force at the time of authoring.

The display unit 260 displays the sum of the output signals from the arithmetic processing unit 250, that is, the sum of the left bite force signals, the sum of the right bite force signals, the left bite force signal value, the right bite force signal value, Masticatory EMG signal, right masticatory EMG signal, starting time of authoring, ending time of authoring, time of authoring, maximum occlusal force during authoring (maximum value among all values of total occlusal force signal between starting time of authoring and ending of authoring).

The memory unit 270 stores the output signal from the operation processor 250.

The key input unit 280 sets and inputs an occlusal force signal output mode, an occlusal force signal, and an electromyogram output mode.

The occlusal force signal output mode is a mode for outputting only the occlusal force signal, and the portion for detecting the masticatory muscle EMG signal is not driven. As a result, the occlusion force signal output mode is driven by the occlusal force measurement system of FIG.

The occlusal force signal and the EMG output mode are modes for simultaneously detecting the bite force signal and the masticatory EMG signal. If this is set, it is driven by the occlusal force measurement system of FIG. 5 as a result.

Fig. 9 is a flowchart for explaining the operation of the arithmetic processing unit of the occlusal force measurement system of Fig. 3;

In the occlusal force signal receiving step, each of the strain gauge sensors 107 located in the oral cavity insertion part 120 on the left side receives the detected force signals, and each strain gauge sensor located in the oral cavity part 120 on the right side. Each of the detected bite force signals is received from step 107 (S110). For example, if three strain gauge sensors 107 are respectively installed at a predetermined distance from the oral cavity insertion part 120 on the left side and the oral insertion part 120 on the right side, three from the oral insertion part 120 on the left side. The left occlusal force signal (more accurately, the occlusal force signal of the left electrodes) is received, and the three right occlusal force signals (more accurately, the occlusion force signals of the right electrodes) are received from the oral insertion part 120 on the right side.

In the step of calculating the left and right bite force values, the calculation processing unit 250 calculates the sum of the left bite force signals, which is the sum of the detected bite force signals from each strain gauge sensor 107 located in the oral cavity insertion part 120 on the left side. The left occlusal force signal value, which is the average value of the sum of the occlusal force signals on the left side, is obtained, and the arithmetic processing unit 250 is detected from each strain gauge sensor 107 located in the oral cavity insertion unit 120 on the right side. The sum of the bite force signals on the right, which is the sum of the bite force signals, is obtained, and the right bite force signal value, which is the average value of the sum of the bite force signals on the right, is obtained (S130). For example, when three strain gauge sensors 107 are provided in the oral cavity insertion part 120 and the oral cavity insertion part 120 on the right side, the three left occlusal force signals are summed to obtain an average and three The right occlusal force signal is summed and averaged.

In the step of detecting the total bite force value, the left bite force signal value and the right bite force signal value are summed to obtain the total bite force signal value (S140). For example, when three strain gauge sensors 107 are provided in the oral cavity insertion part 120 and the oral cavity insertion part 120 on the right side, the left occlusal force signal value obtained by averaging the three left occlusal force signals, The right bite force signal value obtained by averaging three right bite force signals is summed to obtain the total bite force signal values.

In a result outputting step, the left bite force signal value, the right bite force signal value, the total bite force signal value, the total bite force signal average value is output to the display unit 260 and the memory unit 270 (S190).

In the determination step of detecting the average period of a specific section, when the user (medical professional) sets the average detection mode of the specific section, the setting value is received through the key input unit 280, and the calculation processing unit 250 determines that the specific section average detection mode is set. If not set, it ends (S250).

As a detection section input step, if a specific section average detection mode is set in the step of determining whether to detect a specific section average, a detection section, that is, a detection start point and a detection end point, is received (S260). In this case, when the user (medical specialist) clicks on the start point and the end point on the graph of the total occlusal force signal values displayed on the display unit 260, the user (medical expert) may set the detection point.

Detecting the total bite force signal average value, the left bite force signal average value, or the right bite force signal average value between the detection interval input in the detection interval input step and outputs to the display unit 260 and the memory unit 270 (S270), The process returns to step S250 for determining the average period of the specific section.

Fig. 10 is a flowchart for explaining the operation of the arithmetic processing unit of the occlusal force measuring system of Fig. 5;

In the step of receiving an EMG signal and an occlusal force signal, each of the strain gauge sensors 107 located in the oral cavity insertion part 120 on the left side receives the detected occlusal force signals, and the angles located in the oral cavity insertion part 120 on the right side. Receive the occlusal force signal detected from the strain gauge sensor 107, respectively, and at the same time, the left electromyocardium EMG signal, which is the EMG signal received from the EMG electrode 307 mounted on both of the subject's cheeks, that is, the left EMG electrode 307 (more In detail, the EMG signal detected from the EMG electrode located on the left cheek, and the right EMG signal which is the EMG signal received from the right EMG electrode 307 (more specifically, the EMG signal detected from the EMG electrode located on the right cheek) Receive (S120).

In the step of calculating the left and right bite force values, the calculation processing unit 250 calculates the sum of the left bite force signals, which is the sum of the detected bite force signals from each strain gauge sensor 107 located in the oral cavity insertion part 120 on the left side. The left occlusal force signal value, which is the average value of the sum of the occlusal force signals on the left side, is obtained, and the arithmetic processing unit 250 is detected from each strain gauge sensor 107 located in the oral cavity insertion unit 120 on the right side. The sum of the bite force signals on the right, which is the sum of the bite force signals, is obtained, and the right bite force signal value, which is the average value of the sum of the bite force signals on the right, is obtained (S130).

In the step of detecting the total bite force value, the left bite force signal value and the right bite force signal value are summed to obtain the total bite force signal value (S140).

In the mastication start time detection step, the left masticatory muscle EMG signal and the right masticatory muscle EMG signal are compared with previously stored mastication thresholds, and a point of time at which the initial mastication threshold is greater than or equal to is detected and determined as the mastication starting point (S150).

At the end of mastication time detection step, after the start point of mastication start, the left masticatory muscle EMG signal and the right masticatory muscle EMG signal are compared with previously stored mastication end thresholds to detect a time point at which the initial mastication end threshold is less than or equal to It is determined by the time point (S160).

In the step of detecting the total bite force average value, after the step of detecting the end of mastication, the total bite force average value, the left bite force signal average value, or the right bite force signal average value between the start of mastication and the end of mastication is detected (S170).

 In a result outputting step, the left bite force signal value, the right bite force signal value, the total bite force signal value, the total bite force signal average value is output to the display unit 260 and the memory unit 270 (S190).

In the determination step of detecting the average period of a specific section, when the user (medical professional) sets the average detection mode of the specific section, the setting value is received through the key input unit 280, and the calculation processing unit 250 determines that the specific section average detection mode is set. If not set, it ends (S250).

As a detection section input step, if a specific section average detection mode is set in the step of determining whether to detect a specific section average, a detection section, that is, a detection start point and a detection end point, is received (S260). In this case, when the user (medical specialist) clicks on the start point and the end point on the graph for the total occlusal force signal value displayed on the display unit 260, the user (medical expert) may set the detection point.

In the step of detecting the total bite force signal average value of the specific section, the total bite signal mean value between the detection section input in the detection section input step is detected and output to the display unit 260 and the memory unit 270 (S270), the specific section The process returns to the average detection determination step (S250).

In the present invention, the authoring start threshold and the authoring end threshold may be stored at the beginning of use, and in some cases, may be stored at the time of factory shipment. When the threshold for authoring is stored at the beginning of use, the maximum total occlusal force signal of the user can be detected and set to about 1/5 to about 1/2 of the value. When the end-of-write threshold is stored at the beginning of use, the maximum total occlusal force signal of the user can be detected and set to about 1/3 to about 3/5 of the value.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

10: an occlusal force measuring apparatus 100:
105: occlusal force signal detection unit 107: strain gauge sensor
110: frame C 120: oral insertion portion
130: occlusal support 140: oral insertion cover
150: connection part 160: signal transmission part
170: Occlusal force signal preprocessing unit 180: Data collecting unit
190: Transmitting section 200: Signal analysis section
210: Receiving unit 250:
260: display unit 270: memory unit
280: key input unit 305: electromyogram signal detection unit
307: Electromyography electrode 370: EMG signal preprocessing unit

Claims (21)

An apparatus for measuring an occlusal force, comprising: an occlusal force measuring device mounted in an oral cavity of a subject to measure an occlusal force; and a signal analyzer for analyzing an occlusal force signal detected from the occlusal force measuring device,
A C-shaped frame positioned at one end of the occlusal force measurement device and made of a C-shaped frame;
Equipped with a strain gauge sensor for detecting the occlusal force signal when inserted into the oral cavity, located in both ends of the C-shaped frame, the intraoral insertion unit;
A signal transmission unit which is located at another end of the occlusal force measurement apparatus and is connected to the C-shaped frame by a connection unit and wirelessly transmits the authoring signal detected by the intraoral insertion unit to the signal analysis unit;
And a bite force measuring system for measuring an occlusion force. 2. The apparatus according to claim 1,
Further comprising: an occlusal assistance part made of a synthetic resin material which is harmless to the human body and which surrounds the oral cavity insertion part. According to claim 3, Occlusal force measuring device,
Further comprising a mouth insertion portion cover which is positioned between the oral cavity insertion portion and the occlusal auxiliary portion and covers the oral cavity insertion portion. The method of claim 1,
And an EMG detector including an EMG electrode and attaching the EMG electrode to both cheeks of the examinee to detect an EMG signal during mastication. 5. The method of claim 4,
Further comprising an electromyogram signal preprocessing section for amplifying the electromyogram signal received from the electromyogram detection section and eliminating noise,
The electromyogram detecting unit may be located at one side of the signal transmitting unit, or may be embedded in the signal transmitting unit,
Wherein the electromyogram signal output from the electromyogram signal preprocessing unit is wirelessly transmitted to the signal analysis unit through the signal transmission unit. 6. The apparatus according to claim 5,
Further comprising an occlusal force signal preprocessing unit located in the mouth insertion unit or the signal transmission unit for amplifying the occlusion force signal received from the strain gage sensor and removing noise. 7. The apparatus according to claim 6,
A data collecting unit for converting an occlusal force signal received from the bite force signal preprocessing unit or an electromyogram signal received from the electromyogram signal preprocessing unit into a digital signal;
A transmitter for wirelessly transmitting an occlusal force signal or an electromyogram signal output from the data collecting unit to a signal analyzer;
And a bite force measuring system for measuring an occlusion force. One or more strain gauge sensors on each of the oral cavity insertion part on the left side and the oral cavity insertion part on the right side, and inserted into the oral cavity to detect an occlusal force signal during mastication;
An electromyogram detection unit having an electromyogram electrode and mounting an electromyogram electrode on a cheek of an examinee to detect an electromyogram signal when chewing;
A data collecting unit for converting an occlusal force signal outputted from the occlusal force signal detecting unit and an electromyogram signal outputted from the electromyogram detecting unit into a digital signal;
A transmitter for wirelessly transmitting the bite force signal or the EMG signal received from the data collector;
An arithmetic processing unit for receiving an occlusal force signal or an electromyogram signal wirelessly transmitted from a transmitting unit through a receiving unit and outputting it to a display unit;
Characterized in that, including, occlusal force measuring system. 9. The image processing apparatus according to claim 8,
The sum of the occlusal force signals on the left, which is the sum of the occlusal force signals detected from the strain gauge sensors located in the oral cavity insertion part on the left side, is calculated.
The sum of the right bite force signals obtained by summing the bite force signals detected from the strain gauge sensors positioned at the right mouth insertion unit is obtained and the right bite force signal value obtained by averaging the sum of the right bite force signals is obtained Wherein the bite force measuring system comprises: The method of claim 9, wherein the operation processing unit,
And the right bite force signal value is added to the left bite force signal value to obtain the total bite force value. 11. The image processing apparatus according to claim 10,
If the specific section average detection mode is set, the start point and the end point set by the user are received from the key input unit, an average of the values of the total amount of the occlusal force during the interval between the received start point and end point is obtained, Characterized in that the bite force measuring system 12. The method of claim 11,
A graph of the total bite force signal value is output to the display unit and when the user selects a start point and an end point on the graph, the operation processing unit recognizes the selected start point and end point as a start point and an end point for obtaining the average value of the total bite force Characterized in that the bite force measuring system 11. The image processing apparatus according to claim 10,
The left masticatory muscle EMG signal detected from the electromyographic electrode located in the left ball among the electromyogram electrodes mounted on the subject's knee is compared with the previously stored masticatory threshold value to detect a point at which the masticatory threshold value value starts to be equal to or greater than the previously stored masticatory threshold value, As the start time of authoring of the EMG signal,
The right masticatory muscle EMG signal detected from the electromyographic electrode located in the right ball among the electromyogram electrodes mounted on the subject's pawl is compared with the previously stored mashing start threshold value to detect when the start of the mature threshold value is greater or equal, And a start time of authoring of the EMG signal. The image processing apparatus according to claim 11,
After the start of the mastication of the left masticatory muscle EMG signal, by comparing the left masticatory muscle EMG signal with the previously stored mastication end threshold, the time when the end of the mastication threshold is small or equal to start detection is detected, and the left masticatory muscle EMG signal is the end of the mastication signal ,
After the start of authoring of the right masticatory muscle EMG signal, the right masticatory muscle EMG signal is compared with the previously stored mental end threshold to detect the point at which the mental end threshold value starts to become smaller or equal to the right masticatory muscle EMG signal, Wherein the bite force measuring system comprises: 15. The method of claim 14,
Detecting the average of the left occlusal force signal from the start of the mastication of the left masticatory EMG signal to the end of the mastication;
Wherein an average of the right occlusal force signal from the start of the mastication of the right masticatory muscle EMG signal to the masticatory end of the right masticatory muscle EMG signal is detected. 15. The method of claim 14,
Detecting the average value of the total amount of the occlusion force from one of the starting time of the authoring of the left masticatory muscle EMG signal or the authoring start time of the right masticatory muscle EMG signal to one of the authoring end time of the left masticatory muscle EMG signal or the authoring end time of the right masticatory EMG signal Characterized in that the bite force measuring system A signal receiving step of receiving, by the processing unit, an occlusal force signal from strain gauge sensors positioned respectively at the oral cavity insertion part on the left side and the oral insertion part on the right side;
The calculation unit obtains the left occlusal force signal value, which is an average value of the occlusal force signals detected from the strain gauge sensors located at the left mouth insertion unit, and the occlusal force detected from the strain gauge sensors located at the right mouth insertion unit. Calculating a left occlusal force signal value, which is a value obtained by averaging signals;
A total bite force value detecting step of summing the left bite force signal value and the right bite force signal value to obtain a total bite force signal value;
A method of driving an occlusal force measuring system, characterized in that it comprises a. 18. The method of claim 17,
A result output step of outputting the left bite force signal value, the right bite force signal value, the total bite force signal value, and the total bite force signal average value to the display unit and the memory unit after the total bite force value detecting step;
Method for driving the occlusal force measuring system, characterized in that further comprises. 18. The method of claim 17,
A detection section input step of receiving a detection start point and a detection end point set by a user through a key input unit if a specific section average detection mode is set;
Detecting the total occlusal force signal average value between the detection start point and the detection end point received in the detection section input step and outputting the average bite force signal average value to the display section or the memory section;
Method for driving the occlusal force measuring system, characterized in that further comprises. 18. The method of claim 17,
In the signal receiving step, the calculation processing unit receives the occlusal force signal from the strain gauge sensors,
And a left masticatory muscle electromyography signal detected from the EMG electrode located on the left cheek, and a right masticatory muscle electromyography signal detected from the EMG electrode located on the right cheek. The method of claim 20, wherein after the total bite force detection step:
A mastication start point detection step of detecting a mastication start threshold value from a left masticatory muscle EMG signal and a right masticatory muscle EMG signal, compared with a previously stored mastication threshold value, when the mastication threshold value starts to become greater or equal;
A mastication end point detection step of detecting, at the left masticatory muscle EMG signal and the right masticatory muscle EMG signal, a time point at which the mastication start threshold becomes smaller or equal to the pre-stored mastication end threshold value;
An overall occlusal force mean value detecting step of detecting an overall occlusal force mean value from the mastication start point detected in the mastication start point detection step to the mastication end point detected in the mastication end point detection step;
Method for driving the occlusal force measuring system, characterized in that further comprises.

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