CN113842146A - Single-pair tooth occlusal force measuring device - Google Patents
Single-pair tooth occlusal force measuring device Download PDFInfo
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- CN113842146A CN113842146A CN202111037759.3A CN202111037759A CN113842146A CN 113842146 A CN113842146 A CN 113842146A CN 202111037759 A CN202111037759 A CN 202111037759A CN 113842146 A CN113842146 A CN 113842146A
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- 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
-
- 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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
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- Public Health (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a device for measuring the occlusal force of a single pair of teeth, which belongs to the field of oral cavity biomechanical detection. The single-pair tooth occlusal force measuring device is simple in structure and convenient to set, can accurately measure the occlusal force of single pairs of teeth in an incisor area and a molar area, improves the sensitivity of tooth occlusal force measurement, further ensures the precision and accuracy of tooth occlusal force measurement, reduces the equipment cost of tooth occlusal force measurement, and has good application prospect and popularization value.
Description
Technical Field
The invention belongs to the field of oral biomechanics detection, and particularly relates to a device for measuring occlusal force of a single pair of teeth.
Background
The biting force of teeth is also called as biting force, which refers to the pressure of mastication generated by the contraction of masticatory muscles when the upper and lower teeth are in contact. In general, an excessive occlusal force may cause a natural dental fracture, and after a missing dentition or a defective tooth body, a tooth is often repaired by a repairing method such as a dental implant, a fixed bridge, an all-ceramic crown and the like. In the above-mentioned repair process, it is usually necessary to make different repair plans according to the age, chewing habits, physiological functions, etc. of the patient, and to perform occlusal force analysis on the patient. Therefore, accurate bite measurement is of great significance in the field of oral medical research, and especially has important measurement criteria in improving the bite function state and evaluating the effects before and after treatment. Furthermore, measurement of the occlusal force is also useful for understanding the functional status of the oromandibular system and the health of tissues such as the tooth body, periodontal tissue and masticatory muscle, and is a common objective evaluation index for oral cavity restoration and orthodontic treatment.
At present, T-Scan occlusal force analyzers produced by Tekscan of Boston, USA are widely applied in the market, can accurately record and analyze the corresponding relation between occlusal force and occlusion time, and analyze recorded data by using computer software to further obtain the distribution condition of the oral teeth occlusal force, thereby meeting the measurement requirement of the teeth occlusal force to a certain extent.
However, the occlusal force analyzer measures the total occlusal force of all teeth, and only compares the relative size of the occlusal force of each contact point, and cannot accurately measure the absolute value of the actual occlusal force of a single tooth. For the measurement of the single-pair tooth bite force, no mature commercial product is available at present, and although some solutions are proposed in the prior patent documents (CN201710588758.5, CN201510847598.2, etc.), most of the prior patent documents are that a commercial mechanical sensor is mechanically or capacitively wrapped by a layer of elastic medium and then is put into the oral cavity of a patient for measurement. Although the measurement requirement of a single pair of teeth can be realized to a certain extent, the method also has obvious defects, and is mainly reflected in the following aspects:
(1) the existing sensors for measuring the occlusal force of a single pair of teeth prepared on the basis of force-sensitive materials need to provide a matched external power supply to drive the sensors to work. The sensing methods are limited by the power supply of the sensor, have narrow application range and are difficult to work independently for a long time; and for the random working requirement, the sensor also needs to be powered on for a long time, and the requirement of energy conservation is not met.
(2) The shapes of teeth at different parts in the oral cavity are different, most of the existing measuring devices cannot perform targeted measurement, and the actual occlusal force conditions of different types of teeth cannot be accurately reflected. In addition, the measurement sensitivity of the existing measurement device is often poor, so that the accuracy of the occlusal force test is poor, and the requirement of practical application is difficult to meet.
Disclosure of Invention
Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides the device for measuring the occlusal force of the single pair of teeth, which can realize the accurate measurement of the occlusal force of the single pair of teeth at different positions in the oral cavity, improve the accuracy and efficiency of the measurement of the occlusal force of the teeth and reduce the equipment cost of the measurement of the occlusal force of the teeth.
In order to achieve the above objects, the present invention provides a single-pair tooth occlusal force measuring device, which includes an incisor measuring unit and a molar measuring unit;
the two measuring units respectively comprise a measuring part and a connecting part;
the measuring part comprises a force-sensitive sensor and an insulating sleeve coated on the periphery of the force-sensitive sensor; the force-sensitive sensor is made of flexible electromagnetic materials; the insulating sleeve is made of flexible material, a cavity for accommodating the force-sensitive sensor is formed in the insulating sleeve, a notch communicated with the cavity is formed in one side of the insulating sleeve, and the insulating sleeve is connected with the connecting part;
the connecting part comprises a measuring rod in a rod-shaped structure, one end of the measuring rod is a connecting end connected with data acquisition equipment, and the other end of the measuring rod is a measuring end connected with the insulating sleeve in a matching manner; a wire is arranged in the measuring rod in an extending manner, one end of the wire is communicated with the force-sensitive sensor, and the other end of the wire is used for connecting the data acquisition equipment; and is
The measuring rod of the incisor measuring unit is a first measuring rod in a straight rod structure; the measuring rod of the molar measuring unit is an L-shaped second measuring rod.
As a further improvement of the present invention, the force-sensitive sensor of the incisor measuring unit has a strip-shaped structure, and the length direction of the force-sensitive sensor is perpendicular to the axial direction of the first measuring rod.
As a further improvement of the invention, a plurality of first measuring grooves are arranged on the top surface and/or the bottom surface of the insulating sleeve of the incisor measuring unit;
the extending direction of the first measuring groove is parallel to the length direction of the force-sensitive sensor in the insulating sleeve, and the first measuring groove is aligned with the force-sensitive sensor in the thickness direction of the insulating sleeve.
As a further improvement of the invention, the force-sensitive sensor of the molar measuring unit is of a square structure, and a second measuring groove is arranged on the top surface and/or the bottom surface of the insulating sleeve of the molar measuring unit;
the second measuring groove is a concentric ring groove or a spiral groove, and the second measuring groove is aligned with the force-sensitive sensor in the insulating sleeve in the thickness direction of the insulating sleeve.
As a further improvement of the invention, the force-sensitive sensor of the molar measurement unit is of an annular structure with a hole in the middle.
As a further improvement of the invention, the insulating sleeve is made of medical rubber, non-toxic silica gel or hydrogel.
As a further improvement of the invention, the length of the first measuring rod is 6 cm-15 cm; the length of the measuring end of the second measuring rod is 2 cm-5 cm, and the length of the connecting end is 8 cm-15 cm.
As a further improvement of the invention, the periphery of the force-sensitive sensor is coated with a protective film.
As a further improvement of the invention, the insulating sleeve is detachably sleeved on the periphery of the force-sensitive sensor.
As a further improvement of the invention, the periphery of the measuring end of the measuring rod is provided with a ring groove for clamping and embedding the gap of the insulating sleeve.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the technical scheme conceived by the invention has the following beneficial effects:
(1) according to the single-pair tooth occlusal force measuring device, the incisor measuring unit and the molar measuring unit are respectively arranged corresponding to the teeth in different areas in the oral cavity, and the force-sensitive sensor for sensing the occlusal force of the teeth is further preferably made of the flexible electromagnetic material, so that on the basis of accurately measuring the occlusal force of the single pair of teeth in different areas in the oral cavity, the sensitivity and the accuracy of measuring the occlusal force of the single pair of teeth are further improved, the accuracy of measuring the occlusal force of the single pair of teeth is ensured, and a reliable basis is provided for judging the health condition of the teeth and formulating a restoration scheme.
(2) According to the single-pair tooth occlusal force measuring device, due to the application of the force-sensitive sensor made of the flexible electromagnetic material in the measuring unit, the measuring unit does not need to be supplied with an independent external power supply, mechanical energy generated by tooth occlusal force can be converted into electric energy, so that the reliable work of the force-sensitive sensor is ensured, the structure of the measuring unit is simplified, energy is saved, and the service life of the sensor is prolonged.
(3) According to the single-pair tooth occlusal force measuring device, the matching relation between the insulating sleeve and the force-sensitive sensor is set to be detachable, so that the measuring unit can be repeatedly used only by replacing the insulating sleeve after completing measurement of one user, the recycling of the measuring unit is realized, the use cost of equipment is reduced, the cleanness and the safety of tooth occlusal force measurement are ensured, and the situations of cross infection and the like are effectively avoided.
(4) According to the single-pair tooth occlusal force measuring device, the first measuring groove and the second measuring groove are matched with the corresponding force sensitive sensors, so that the single-pair tooth occlusal force measuring process is further simplified, the tooth occlusal force measuring efficiency and precision are improved, and objective evaluation indexes are provided for oral restoration and orthodontic treatment.
(5) The single-pair tooth occlusal force measuring device is simple in structure and convenient to set, can accurately measure the occlusal force of single pairs of teeth in an incisor area and a molar area, improves the sensitivity of tooth occlusal force measurement, further ensures the precision and accuracy of tooth occlusal force measurement, reduces the equipment cost of tooth occlusal force measurement, and has good application prospect and popularization value.
Drawings
FIG. 1 is a sectional view of an incisor measuring unit A-A of a single pair of teeth bite force measuring device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an incisor measurement unit of a single pair of tooth bite force measurement devices according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a molar measurement unit of a single pair of tooth bite force measurement devices according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of the partitioning of different tooth forms in an embodiment of the present invention;
FIG. 5 is a schematic representation of a single pair of dental bite force measuring devices according to an embodiment of the present invention before and after operation;
in all the figures, the same reference numerals denote the same features, in particular:
1. a force sensitive sensor; 2. an insulating sleeve; 3. a protective film; 4. a measuring rod; 5. a wire; 201. a first measuring groove; 202. a second measuring tank; 401. a first measuring rod; 402. a second measuring rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example (b):
referring to fig. 1 to 3, a single pair of dental occlusion force measuring devices in a preferred embodiment of the present invention includes an incisor measuring unit and a molars measuring unit for measuring occlusion forces of teeth in regions 1 and 2 shown in fig. 4, respectively.
The region 1 is mainly distributed in the front end region of a pair of teeth, corresponds to the mouth opening position, and the teeth in the region are mainly divided into incisors and cuspids (posterior incisors), and are characterized in that the occlusal surface is slender, and the contact area of the upper teeth and the lower teeth is small during occlusion; the areas 2 are mainly distributed in the areas at two ends of a pair of teeth, corresponding to the positions of cheeks, the teeth in the areas are mainly divided into premolars and molars, and the teeth are characterized in that the occlusal surface is large, the contact area of the upper teeth and the lower teeth is large during occlusion, and the contact surfaces during occlusion are often distributed annularly.
Based on the difference between the tooth profile structure and the distribution position of incisors and molars, an incisor measuring unit and a molars measuring unit are correspondingly arranged in the preferred embodiment and are respectively used for measuring the occlusal force of a single pair of incisors and a single pair of molars.
Specifically, the incisor measurement unit in the preferred embodiment is shown in fig. 1 and 2, and the molar measurement unit is shown in fig. 3, and includes a measurement portion and a connection portion, respectively. Wherein, the measuring part comprises a force sensor 1 and an insulating sleeve 2 which is detachably arranged outside the force sensor 1, and the insulating sleeve 2 is made of flexible material and can quickly transmit the occlusal force of teeth to the force sensor 1. In order to ensure the reliability of the arrangement of the force-sensitive sensor 1, the force-sensitive sensor 1 is encapsulated in the protective film 3, so that the force-sensitive sensor 1 is prevented from being influenced by saliva invading into the insulating sleeve 2 during the use process of the incisor measuring unit, and the accuracy of the measurement of the occlusal force is ensured.
Meanwhile, the connecting part in the preferred embodiment is connected to one side of the measuring part and comprises a measuring rod 4, one end of the measuring rod 4 is connected with the protective film 3 in a matching mode, so that the force sensor 1 can be reliably connected to the end of the measuring rod 4, and the other end of the measuring rod 4 is used for being connected with a measuring device to achieve acquisition and analysis of occlusal force data. Correspondingly, the middle part of the measuring rod 4 is provided with a through hole along the axial direction, forming a hollow tubular structure, and further preferably a hollow metal tube. As shown in fig. 1, a wire 5 is disposed in the measuring rod 4, and one end of the wire extends out of the end of the measuring rod 4 and is matched with the force sensor 1 after extending into the protective film 3, so as to transmit an electric sensing signal of the force sensor 1.
In addition, the insulating sleeve 2 is sleeved outside the force sensor 1 and can be correspondingly matched with the periphery of the measuring rod 4. For example, in the preferred embodiment as shown in fig. 1, a fastening groove is circumferentially opened on the outer circumference of the measuring rod 4, so that one side opening of the insulating sheath 2 can be just fastened in the fastening groove. So, can ensure insulating cover 2 stable connection at the tip of measuring stick 4, and insulating cover 2 can not take place the axial displacement of measuring stick 4, fully guarantee 5 tip of wire and force sensitive sensor 1's connection reliability, avoid dragging between wire 5 and the force sensitive sensor 1, prolong measuring unit's life.
In a specific embodiment, the insulating sleeve 2 is preferably a block structure made of medical rubber, non-toxic silica gel or hydrogel, and a cavity for accommodating the force sensor 1 and the protective film 3 is formed inside the insulating sleeve, so that after the force sensor 1 is embedded into the insulating sleeve 2, the outer peripheral wall surface of the insulating sleeve just abuts against the inner peripheral wall surface of the cavity. Correspondingly, one side of the insulating sleeve 2 is provided with an opening communicated with the inner cavity of the insulating sleeve, and the opening is arranged in an openable and closable mode and used for extending the force sensor 1 and matching the end part of the insulating sleeve 2 and the measuring rod 4. In practical arrangement, the opening of the insulating sleeve 2 can be closed by adopting a sticking mode, a pin-hole matching mode, a buckling mode and the like, as long as the opening side can be closed.
Of course, according to the actual requirement, the insulating sleeve 2 may be configured in another form, for example, in a form of butt-matching an upper insulating sleeve unit and a lower insulating sleeve unit, and the two insulating sleeve units form an accommodating cavity of the force sensor 1 between the upper insulating sleeve unit and the lower insulating sleeve unit after butt-matching and correspondingly match the outer periphery of the measuring rod 4.
Further, the force sensor 1 in the preferred embodiment is made of a flexible electromagnetic material, and more specifically, the inventor has issued patent document "CN 201811245420.0-a flexible electromagnetic material with piezoelectric property and manufacturing method" to make the flexible electromagnetic material. Through the correspondence optimization of flexible electromagnetic material for force sensor 1 can turn into the electric energy with the mechanical energy that human tooth occlusal force produced at the during operation, and then when producing inductive signal, for the sensor provides the energy, supports the work of force sensor 1 self, has effectively solved the supply problem of single independent external power source to tooth occlusal force measuring unit, need not to set up external power source alone again, has simplified measuring unit's structural design.
Specifically, the flexible electromagnetic material is composed of an electric conduction material, a magnetic material, a monomer and an initiator. The weight ratio of the conductive material to the magnetic material to the monomer to the initiator is 0.3-2: 0.3-2: 1: 0.1 to 0.25. The magnetic material is a continuous coil/mass of material; or dispersed material particles, the particle size of the particles is 0.01-100 microns; and the magnetic material is one or a mixture of more than two of ferrite, neodymium iron boron, samarium cobalt magnet, alnico and iron chromium cobalt magnet. The conductive material is a continuous coil of material; or dispersed material particles, the particle size of the particles is 0.01-10 microns; and the conductive material of the flexible electromagnetic material with piezoelectric property is one or a mixture of more than two of aluminum, copper, gold, silver, mercury and room temperature liquid metal.
Meanwhile, the monomer in the flexible electromagnetic material comprises one or a mixture of more than two of ethylene terephthalate, trimethylene terephthalate, butylene terephthalate, ethylene naphthalate, diallyl terephthalate, diallyl isophthalate, cyclohexane-dimethyl terephthalate, butylene naphthalate, trimethylene adipate, carbonate, lactide, glycolide, caprolactone, hydroxybutyrate, dimethyl siloxane, acrylic acid and amide. Wherein, the acrylic acid comprises one or a mixture of more than two of butyl acrylate, methyl methacrylate, n-butyl methacrylate and a-chloro methyl acrylate; the amide comprises caprolactam, hexanediamine adipate and decanediamine sebacate; or one or more of urethane, vinyl acetate, vinyl pyrrolidone, ethylene glycol, vinyl alcohol, acrylonitrile, vinyl butyral and ethylene oxide.
Further, the initiator comprises one or more of 2-hydroxy-4' - (2-hydroxyethoxy) -2-methyl propiophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, tripropylene glycol diacrylate, dipropylene glycol diacrylate, 1, 6-hexanediol diacrylate, neopentyl glycol diacrylate, diethylene glycol diacrylate phthalate, polyethylene glycol acrylate.
Through preparing the force sensor 1 in the preferred embodiment with the above-mentioned flexible electromagnetic material, not only can reduce the cost of occlusal force testing arrangement (the cost reduces more than half than traditional piezoelectric material), can also effectively promote the working property of force sensor 1, because above-mentioned flexible electromagnetic material does not use the polymer that possesses conductive property, the bulk resistance of combined material system is low, the loss in the material is little during output voltage, thereby it is higher to make the material outwards output voltage, output voltage far exceeds conventional piezoelectric material, can more quickly, more accurately reflect the occlusal force state of single pair of tooth, and can more accurately embody the occlusal force difference of different profile of tooth, different position tooth.
Although the occlusal force of teeth with different tooth shapes and teeth at different parts has a certain difference, the difference is generally small, and if the sensitivity of the measuring device is insufficient, the difference cannot be accurately sensed and measured, so that the measuring precision is poor. Therefore, in the preferred embodiment, the force-sensitive sensor 1 is made of a flexible electromagnetic material, so that the sensitivity of the force-sensitive sensor 1 is improved, and the occlusal force data of a single pair of teeth at different positions is measured more accurately, thereby providing a basis for accurately judging the health state of the teeth and accurately performing tooth restoration work.
Further, in order to better match the measurement of the occlusal force of the teeth in different areas (area 1, area 2), the force sensitive sensors 1 and the measuring rods 4 in the incisor and molar measuring units in the preferred embodiment are designed specifically.
The force-sensitive sensors 1 of the incisor measuring unit are arranged in a long strip shape, the measuring rod 4 of the incisor measuring unit is a first measuring rod 401 in a straight rod-shaped structure, and the axial direction of the first measuring rod 401 is preferably perpendicular to the length direction of the force-sensitive sensors 1, namely the lead 5 of the first measuring rod is connected to one side of the force-sensitive sensors 1 in the width direction. With the arrangement, the first measuring rod 401 can be used for measuring the occlusal force of a single pair of incisors after extending into the oral cavity along the inlet direction. Further, in the preferred embodiment, a plurality of first measuring grooves 201 are respectively formed on the top surface and/or the bottom surface of the insulating sleeve 2 of the incisor measuring unit, as shown in fig. 1 and 2. In actual installation, the extending direction of the first measuring groove 301 is parallel to the length direction of the force sensor 1 and is aligned with the force sensor 1 in the thickness direction (vertical direction in fig. 1) of the insulating sleeve 2; correspondingly, the first measuring grooves 201 on the top surface and the bottom surface of the insulating sleeve 2 are correspondingly arranged in the thickness direction, so that a single pair of incisors can be accurately matched with the force sensor 1 when biting into any pair of the first measuring grooves 201, and the accuracy of measuring the occlusal force of the incisors is further ensured.
In more detail, the insulation sleeve 2 of the incisor measuring unit in the preferred embodiment has a length of 4mm, a width of 3mm, and a thickness of 5mm, and the first measuring rod 401, which has a straight rod shape and a length direction perpendicular to the axial direction of the first measuring rod 401, has a length of 6cm to 15cm, and more preferably 10 cm. Of course, the size of the incisor measuring unit may be correspondingly optimized as needed at the time of actual setting.
Further, the force-sensitive sensor 1 of the molar measuring unit is in a square structure, and the width of the force-sensitive sensor 1 is larger than that of the force-sensitive sensor 1 of the incisor measuring unit. In a preferred embodiment, the force sensitive sensor 1 of the molar measuring unit is arranged as a ring-shaped structure with a certain width to better match a single pair of molars after occlusion. Meanwhile, the measuring rod of the molar measuring unit in the preferred embodiment is a second measuring rod 402 in an "L" shape, one end of the second measuring rod 402 is a measuring end matched with the insulating sleeve 2, the other end of the second measuring rod is a connecting end used for connecting data acquisition equipment, and the axial direction of the connecting end is parallel to the inlet direction in actual use. Therefore, the molar measuring unit can be accurately matched with a single pair of molars and the occlusal force test can be carried out.
In a preferred embodiment, the top surface and/or the bottom surface of the insulating sleeve 2 of the molar measuring unit is provided with a second measuring groove 202 which is a spiral groove or a concentric ring groove as shown in fig. 3, so that when a single pair of molars correspondingly acts on the second measuring groove 202 to complete occlusion, the force sensor 1 in the insulating sleeve 2 can be accurately matched, and the occlusion force measurement of the single pair of molars can be further completed.
More specifically, in the preferred embodiment, the insulating sleeve 2 of the molar measuring unit is 4mm long, 6mm wide and 5mm thick, and the length direction is perpendicular to the axial direction of the measuring end of the second measuring rod 402. Correspondingly, the length of the measuring end is 2 cm-5 cm, and is further preferably 3 cm; the length of the connecting end is 8cm to 15cm, and more preferably 10 cm.
In addition, the thickness of the force sensor 1 in the preferred embodiment is preferably 2mm to 5mm, and more preferably 3 mm. Meanwhile, the distance from the surface of the insulating sheath 2 to the surface of the force sensor 1 in the preferred embodiment is preferably 0.8mm to 1.5mm, for example, 1 mm.
In practical application, according to different measured areas, an incisor measuring unit or a molar measuring unit is correspondingly selected, the connecting part is connected to data acquisition equipment, the corresponding measuring rod 4 is held by hand, and the measuring part of the measuring rod extends into the corresponding position in the oral cavity, so that the first measuring groove 201 or the second measuring groove 202 on the insulating sleeve 2 is vertically aligned with a single pair of teeth to be measured, as shown in the left side of fig. 5; and sending an instruction to enable the patient to carry out tooth occlusion, wherein at the moment, the force-sensitive sensor 1 is pressed to generate an electric signal on the upper side and the lower side of the single pair of tooth occlusion insulating sleeves 2, the electric signal is continuously output by the lead 5, and finally, the data acquisition equipment is used for producing the occlusion force measurement map of the pair of teeth.
After the detection of incisors or molars of one measurer is finished, the dental occlusal force of the next measurer can be measured only by taking down and replacing the insulating sleeve 2 corresponding to the measuring unit. Therefore, the efficiency and the quality of measuring the occlusal force of the teeth can be effectively ensured, the equipment cost is saved, the cleanness in the measuring process is ensured, and the cross infection is avoided.
The single-pair tooth occlusal force measuring device is simple in structure and convenient to set, can accurately measure the occlusal force of single pairs of teeth in an incisor area and a molar area, improves the sensitivity of tooth occlusal force measurement, further ensures the precision and accuracy of tooth occlusal force measurement, reduces the equipment cost of tooth occlusal force measurement, and has good application prospect and popularization value.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A single-pair tooth occlusal force measuring device is characterized by comprising an incisor measuring unit and a molar measuring unit;
the two measuring units respectively comprise a measuring part and a connecting part;
the measuring part comprises a force-sensitive sensor and an insulating sleeve coated on the periphery of the force-sensitive sensor; the force-sensitive sensor is made of flexible electromagnetic materials; the insulating sleeve is made of flexible material, a cavity for accommodating the force-sensitive sensor is formed in the insulating sleeve, a notch communicated with the cavity is formed in one side of the insulating sleeve, and the insulating sleeve is connected with the connecting part;
the connecting part comprises a measuring rod in a rod-shaped structure, one end of the measuring rod is a connecting end connected with data acquisition equipment, and the other end of the measuring rod is a measuring end connected with the insulating sleeve in a matching manner; a wire is arranged in the measuring rod in an extending manner, one end of the wire is communicated with the force-sensitive sensor, and the other end of the wire is used for connecting the data acquisition equipment; and is
The measuring rod of the incisor measuring unit is a first measuring rod in a straight rod structure; the measuring rod of the molar measuring unit is an L-shaped second measuring rod.
2. The single-pair dental occlusion force measuring device according to claim 1, wherein the force sensor of the incisor measuring unit has an elongated structure, and a length direction of the force sensor is perpendicular to an axial direction of the first measuring rod.
3. The single-pair dental occlusion force measuring device according to claim 2, wherein the incisor measuring unit has a plurality of first measuring grooves formed on a top surface and/or a bottom surface of an insulating sheath;
the extending direction of the first measuring groove is parallel to the length direction of the force-sensitive sensor in the insulating sleeve, and the first measuring groove is aligned with the force-sensitive sensor in the thickness direction of the insulating sleeve.
4. The device for measuring the occlusal force of a single pair of teeth according to any one of claims 1 to 3, wherein the force sensor of the molar measuring unit has a square structure, and a second measuring groove is formed on the top surface and/or the bottom surface of the insulating sleeve of the molar measuring unit;
the second measuring groove is a concentric ring groove or a spiral groove, and the second measuring groove is aligned with the force-sensitive sensor in the insulating sleeve in the thickness direction of the insulating sleeve.
5. The single-pair dental occlusion force measuring device of claim 4, wherein the force sensitive sensor of the molar measuring unit is a ring structure with a central opening.
6. The device for measuring occlusal force of a single pair of teeth of any one of claims 1 to 5, wherein the insulating sheath is made of medical rubber, non-toxic silicone or hydrogel.
7. The single-pair tooth occlusal force measuring device according to any one of claims 1 to 6, wherein the length of the first measuring rod is 6cm to 15 cm; the length of the measuring end of the second measuring rod is 2 cm-5 cm, and the length of the connecting end is 8 cm-15 cm.
8. The device for measuring occlusal force of a single pair of teeth of any one of claims 1 to 7, wherein the force sensor is provided with a protective film covering the outer periphery thereof.
9. The device for measuring occlusal force of a single pair of teeth of any one of claims 1-8, wherein the insulating sheath is removably fitted around the periphery of the force sensor.
10. The device for measuring occlusal force of a single pair of teeth of claim 9, wherein the measuring rod has a ring groove formed on the outer circumference of the measuring end thereof for engaging with the gap of the insulating sheath.
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