WO2014054871A1 - Dispositif de mesure de force d'occlusion des dents et procédé de mesure de celle-ci - Google Patents

Dispositif de mesure de force d'occlusion des dents et procédé de mesure de celle-ci Download PDF

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Publication number
WO2014054871A1
WO2014054871A1 PCT/KR2013/008700 KR2013008700W WO2014054871A1 WO 2014054871 A1 WO2014054871 A1 WO 2014054871A1 KR 2013008700 W KR2013008700 W KR 2013008700W WO 2014054871 A1 WO2014054871 A1 WO 2014054871A1
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WO
WIPO (PCT)
Prior art keywords
tooth
strain gauge
load cell
occlusal force
force
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PCT/KR2013/008700
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English (en)
Korean (ko)
Inventor
박지만
전윤식
Original Assignee
이화여자대학교 산학협력단
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Publication of WO2014054871A1 publication Critical patent/WO2014054871A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6814—Head
    • A61B5/682—Mouth, e.g., oral cavity; tongue; Lips; Teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
    • A61B5/224—Measuring muscular strength
    • A61B5/228—Measuring muscular strength of masticatory organs, e.g. detecting dental force

Definitions

  • An apparatus for measuring dental bite force is disclosed. More specifically, a dental occlusal force measuring apparatus having a compact structure as compared with the related art and correcting the occlusal force measurement by using a load cell and a strain gauge provided in the sensor unit can be improved.
  • dental implants can be placed in the patient's alveolar bone to replace natural teeth or to correct malocclusion conditions, such as the fall of teeth, when natural teeth are partially or wholly lost due to tooth decay, flavor, trauma or accident. have.
  • Conventional equipment for measuring occlusal force is, for example, equipment using a pressure sensing recording material.
  • the recording paper must be interposed between the upper and lower jaw teeth, so there is a limit that can record only the maximum moment of occlusion, and the recording paper is crumpled, which also limits the number of occlusal force measurements.
  • the occlusal force measuring equipment using the sensor has been developed and used, but this equipment has a disadvantage that the large size of the device may be constrained by the space and costly manufacturing costs.
  • another object according to an embodiment of the present invention is to provide a tooth occlusal force measuring device and a method for measuring the occlusal force can be improved by correcting the measurement of the occlusal force by using a load cell and strain gauge provided in the sensor unit. It is.
  • the sensor is attached to the teeth for detecting the occlusal force of the tooth; And an analysis unit analyzing the occlusal force of the tooth through the signal sensed by the sensor unit, wherein the sensor unit comprises: a strain gauge attached to a surface of the tooth to be measured by the occlusal force; And a load cell disposed on the tooth and measuring the chewing force of the tooth during the chewing activity.
  • the load cell may measure the bite force of the tooth by correcting the measured values measured by the strain gauge and the load cell. It has a compact structure, and the accuracy of the bite force measurement can be improved by correcting the bite force measurement using the load cell and the strain gauge provided in the sensor unit.
  • the signal arranging / amplifying unit electrically connected to the sensor unit for arranging and amplifying the signal detected by the sensor unit; And an A / D converter for digitizing the signal amplified by the signal organizer / amplifier, wherein the analyzer may analyze the bite force of the tooth through the signal converted by the A / D converter.
  • the correction coefficient can be obtained using the measured values of the load cell and the strain gauge.
  • the correction coefficient may be obtained by dividing the voltage value measured in the load cell by the voltage value measured in the strain gauge.
  • the tooth through the simulation reflecting the correction coefficient The occlusal force of can be measured.
  • the tooth occlusal force measuring device may be manufactured integrally to be movable or portable.
  • the bite force measuring method of the tooth bite force measuring apparatus the zero point setting step of setting the zero point of the load cell and the strain gauge of the sensor unit; Obtaining a correction coefficient from the strain gauge and the measured value read from the load cell when applying the chewing force to the load cell from the tooth to which the strain gauge is attached; And a bite force measuring step of measuring the bite force of the tooth by measuring a strain value through the strain gage when the test food is loaded on the tooth and masticating, obtained in the correcting step during the bite force measuring step. It is possible to reflect the correction coefficient, which has a compact structure, and by using the load cell and strain gauge provided in the sensor unit to compensate for the measurement of the occlusal force can improve the accuracy of the occlusal force measurement.
  • the correction coefficient obtained during the correction step may be obtained by dividing the voltage value measured in the load cell by the voltage value measured in the strain gauge.
  • the correction coefficient is Through the reflected simulation, the bite force of the tooth can be measured.
  • FIG. 1 is a block diagram showing the configuration of a dental bite force device according to an embodiment of the present invention.
  • FIG. 2 is a view schematically illustrating a state in which a sensor unit illustrated in FIG. 1 is attached to a tooth.
  • FIG. 3 is a diagram illustrating the configuration of the sensor unit illustrated in FIG. 1 in more detail.
  • Figure 4 is a flow chart of the bite force measuring method of the tooth bite force measuring apparatus according to an embodiment of the present invention.
  • FIG. 1 is a block diagram showing the configuration of a tooth bite force device according to an embodiment of the present invention
  • Figure 2 is a view schematically showing a state in which the sensor unit shown in Figure 1 attached to the teeth
  • Figure 3 More specifically, the configuration of the sensor unit shown in FIG. 1 is illustrated.
  • the dental occlusal force measuring apparatus 100 As shown in these drawings, the dental occlusal force measuring apparatus 100 according to an embodiment of the present invention, the sensor unit 110 is attached to the teeth 101 to detect the occlusal force of the teeth 101, the sensor unit A signal cleanup / amplifier 120 for arranging and amplifying the signal sensed by 110 and an A / D converter 130 for converting the signal amplified by the signal cleanup / amplifier 120 into a digital signal. And, the A / D conversion unit 130 may include an analysis unit 140 for analyzing the bite force of the tooth 101 through the digitized signal.
  • the strain gauge 111 is attached to the surface of the tooth 101 to be the occlusal force measurement target and The load cell 115 may measure the chewing force of the tooth 101 during the chewing activity of the tooth 101.
  • the strain gauge 111 may be connected to the printed circuit board 118 by the wire 113, or may be directly connected to the sensor unit 110.
  • the strain gauge 111 may be attached to the side of the tooth 101 to be measured the occlusal force.
  • the side of the tooth 101 means a labial surface or lingual surface of the tooth 101 and cleanly cleans the surface of the tooth 101 to which the strain gauge 111 is attached. Afterwards, the strain gauge 111 may be attached to the side surface of the tooth 101 through a conventional attachment method.
  • the strain gauge 111 is for measuring the state and size of deformation of the structure by the applied force, and can be largely classified into electric and mechanical methods.
  • the electric strain gauge 111 may be applied.
  • the present invention is not limited thereto.
  • the zero point of the load cell 115 and the strain gauge 111 constituting the sensor unit 110 of the present embodiment is adjusted, and then the numerical values detected by the load cell 115 and the strain gauge 111 are respectively measured.
  • the correction coefficient can be obtained by
  • the zero point of the load cell 115 is set using a device for adjusting the zero point of the load cell 115 so that, for example, a voltage value of 1 V is output when a force of 100 N is applied. Thereafter, the load cell 115 is interposed between the teeth 101 on which the teeth 101 are to be measured, and then the zero point of the strain gauge 111 with respect to the zero-set load cell 115 is set.
  • the load cell 115 is placed on each of the teeth 101 to which the strain gauges 111 are attached, and the load cell 115 and the strain gauges are applied to each tooth 101 while applying a force of 100 N, for example. Can be measured at 111).
  • the authoring force applied to the load cell 115 is not limited to 100N and may be applied to other numerical authoring force.
  • various conditions of the individual teeth 101 for example, natural teeth It is subject to corrections such as differences in the size of teeth, brass, ceramics and materials, teeth, premolar and molar tooth.
  • correction coefficient can be obtained using the following equation.
  • the occlusal force of the teeth 101 generated when the test food 103 is masticated may be measured using the correction factor described above.
  • test foods 103 eg, vegetables, meat, bread, etc.
  • individual strain values may be determined from the strain gauges 111 attached to the teeth 101 individually.
  • Measure The measured data is obtained through the correlation obtained through the simulation in the analysis unit 140 (or another configuration for analysis, for example, computer analysis software), which will be described later, and the total area of the root portion where the actual teeth 101 are fixed.
  • the force received i.e., the occlusal force, may be found, and may be displayed through a display after undergoing analysis or signal conversion by the components described below.
  • the above correlation refers to a correlation formula with the strain value of the strain gauge 111 obtained through experiments under the same conditions as the occlusal force received in the alveolar bone corresponding to the entire area of the root of the tooth 101.
  • the correction coefficient is first obtained through the load cell 115 and the strain gauge 111, and then the measurement is measured during actual chewing of the test food 103 using the correction coefficient.
  • the value can be corrected to improve the accuracy of the tooth 101 occlusal force measurement.
  • the signal arranging / amplifying unit 120 of the present embodiment the configuration for the signal arrangement and the configuration for signal amplification is made integral so that the device size can be significantly reduced compared to the conventional.
  • the signal measured by the sensor unit 110 generally has a form of a resistance signal.
  • the signal arranging / amplifying unit 120 converts the signal into a voltage signal and then amplifies the converted voltage signal.
  • a Wheatstone bridge circuit may be applied when converting a resistance signal into a voltage signal.
  • the signal arranging / amplifying unit 120 may be used, for example, 1000 to 10000. Can be amplified by fold.
  • the A / D converter 130 converts the signal into a digital signal because the voltage signal converted and amplified by the signal organizer / amplifier 120 is an analog signal.
  • the A / D converter 130 may be manufactured integrally with the signal cleanup / amplifier 120 described above, thereby making the device size slimmer.
  • the analyzer 140 may be software of a computer, and analyzes a signal converted by the A / D converter 130. As described above, the analysis unit 140 may obtain a correction coefficient through a value measured through the load cell 115 and the strain gauge 111 of the sensor unit 110, and may occur when the actual measurement is performed using the correction coefficient. By correcting the measured value, the accuracy of the measurement of the bite force of the tooth 101 can be improved.
  • the data analyzed by the analyzing unit 140 is displayed by a display, so that a user who measures the occlusal force of the tooth 101 can accurately determine the occlusal force of the tooth 101, and uses the same as a dental prosthesis.
  • the direction of treatment can be determined.
  • the device has a compact configuration and is easy to move. It is easy and thus easy to use in actual clinic.
  • Figure 4 is a flow chart of the bite force measuring method of the tooth bite force measuring apparatus according to an embodiment of the present invention.
  • the method of measuring the bite force of the tooth bite force measuring apparatus 100 of the present embodiment may include an occlusal force measuring step (S300) of measuring the occlusal force of the tooth (101). .
  • the zero point of the load cell 115 is set after setting the zero point of the load cell 115. This is the setting step.
  • the load cell 115 is placed on each tooth 101 while the load cell 115 is placed thereon for each tooth 101 to which the strain gauge 111 is attached. After measuring the numerical value read from the strain gauge 111, and using the software of the analysis unit 140 to obtain a correction coefficient by using the measured value measured by the load cell 115 and strain gauge 111.
  • the occlusal force measuring step (S300) of the present embodiment after removing the load cell 115, the test food 103 to the upper portion of the tooth 101, that is, the strain gauge 111 is attached to the tooth 101 is to be measured. ) And then the direct chewing while measuring the strain value of each tooth (101). In this step, by applying the correction coefficient measured in the correction step (S200) it is possible to accurately measure the bite force of each tooth (101).
  • the correction is applied at the time of measuring the tooth force 101, so that the accuracy of the tooth force 101 measurement may be further improved.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Dentistry (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

Selon un mode de réalisation de la présente invention, un dispositif pour mesurer une force d'occlusion de dents comprend : une unité de détection fixée à des dents pour détecter la force d'occlusion des dents, et une unité d'analyse pour analyser la force d'occlusion des dents par l'intermédiaire d'un signal détecté par l'unité de détection, l'unité de détection comprenant : une jauge de contrainte fixée à une surface des dents dont la force d'occlusion doit être mesurée ; et une cellule de charge disposée au niveau des dents afin de mesurer la force de mastication des dents pendant une action de mastication. De plus, la force d'occlusion des dents peut être mesurée par correction des valeurs de mesure mesurées par la jauge de contrainte et la cellule de charge dans l'unité d'analyse. Selon un mode de réalisation de la présente invention, la précision de mesure de la force d'occlusion des dents peut être augmentée par la correction de la mesure de la force d'occlusion à l'aide de la cellule de charge et la jauge de contrainte comprises dans l'unité de détection.
PCT/KR2013/008700 2012-10-05 2013-10-01 Dispositif de mesure de force d'occlusion des dents et procédé de mesure de celle-ci WO2014054871A1 (fr)

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KR1020120110617A KR101384392B1 (ko) 2012-10-05 2012-10-05 치아 교합력 측정 장치 및 그의 측정 방법
KR10-2012-0110617 2012-10-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105595951A (zh) * 2016-02-15 2016-05-25 成都格瑞思文化传播有限公司 儿童用压舌板

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KR20160109369A (ko) 2015-03-11 2016-09-21 서강대학교산학협력단 치과용 헤드 기어 장치 및 이를 포함하는 치과용 헤드 기어 치료 시스템
KR101899708B1 (ko) 2017-01-24 2018-09-17 기분좋은세상 주식회사 저작근운동기구를 이용한 보행 균형 분석 시스템
KR101972209B1 (ko) 2017-02-10 2019-08-16 기분좋은세상 주식회사 저작근운동기구를 이용한 인지기능 개선 진단 시스템
KR102058781B1 (ko) 2017-11-30 2019-12-23 강원대학교산학협력단 저작 재현 시스템
KR102299357B1 (ko) * 2018-12-10 2021-09-07 고려대학교 산학협력단 식용 젤리를 이용한 교합력 진단 장치

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JPH06181941A (ja) * 1992-12-18 1994-07-05 Japan Steel Works Ltd:The 介護装置及びその制御方法
KR20080090262A (ko) * 2007-04-03 2008-10-08 니타 가부시키가이샤 압력 분포 센서 시스템
KR20110067682A (ko) * 2009-12-15 2011-06-22 이화여자대학교 산학협력단 치아의 교합력 측정장치 및 방법

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JPH06181941A (ja) * 1992-12-18 1994-07-05 Japan Steel Works Ltd:The 介護装置及びその制御方法
KR20080090262A (ko) * 2007-04-03 2008-10-08 니타 가부시키가이샤 압력 분포 센서 시스템
KR20110067682A (ko) * 2009-12-15 2011-06-22 이화여자대학교 산학협력단 치아의 교합력 측정장치 및 방법

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105595951A (zh) * 2016-02-15 2016-05-25 成都格瑞思文化传播有限公司 儿童用压舌板

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