Novel gel film capacitive sensor for measuring full-mouth tooth occlusal force and method thereof

A technology of film capacitance and bite force, which is applied in the direction of testing muscle strength, gymnastics equipment, muscle training equipment, etc., can solve the problems of opacity, large influence of sensor bite force value measurement, and inability to observe tooth changes, etc., to reduce additional Effect of stiffness, good biocompatibility, effect of ensuring accuracy

Active Publication Date: 2016-04-20
XI AN JIAOTONG UNIV
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Problems solved by technology

However, the traditional tooth bite force measurement sensor has the following problems: First, if the resultant force measurement device adopts a capacitive sensor, the bite force of the whole mouth is related to the total capacitance value of all parallel capacitive sensor units, and the total capacitance value in the parallel circuit is equal to The simple addition of the capacitance values ​​of each branch, but the current similar piezoresistive force measuring device cannot be implemented with this simple parallel circuit, it must be measured in a single way, and the measurement of the cumulative sum cannot be completed; secondly, the previous mechanical, resistance Strain gauge or piezoelectric effect-based sensor

Method used

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[0019] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0020] Such as figure 1 As shown, the present invention is a new type of thin film capacitive sensor made of soft, thin and transparent gel for real-time measurement of the occlusal force of full mouth teeth. It includes an insulating medium 3, and the upper layer of the insulating medium 3 is evenly adhered to several characteristic points. Several cube gels are connected, and these several cube gels form the upper ion gel 2. The lower layer of the insulating medium 3 is uniformly bonded with the lower ion gel 4, and the insulating medium 3 and the lower ion gel 4 are connected to the upper Several cubic gels in the ion gel 2 respectively form a number of capacitors. To avoid the influence of external parasitic capacitance, a layer of upper insulating medium 1 is pasted on the upper surface of the upper ion gel 2, and a layer of upper insulating medium 1

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Abstract

The invention relates to a novel gel film capacitive sensor for measuring the full-mouth tooth occlusal force and a method thereof. Each of the upper and lower surfaces of the insulating medium is pasted with a layer of ionic gel serving as electrolyte, two kinds of materials are soft and transparent, ionic gel is pasted on several points to form several capacitors which can change along with the occlusal force, the capacitors are connected in parallel, a layer of insulating medium is pasted on the upper surfaces of the capacitors, and a layer of insulating medium is pasted on the lower surfaces of the capacitors, influence of external parasitic capacitors is avoided, buses are connected to an acquisition card , and the total capacitance value under the action of full-mouth tooth occlusal force can be obtained, and therefore the full-mouth tooth occlusal force can be measured; the capacitive sensor resultant force measuring device can obtain the full-mouth tooth occlusal force by means of a simple parallel circuit, but a piezoresistive resultant force measuring device only can measure a single circuit, and cannot measure the cumulative sum, by employing the novel gel material, the tooth occlusion case can be simulated as real as possible to obtain the full-mouth tooth occlusal force, and the novel gel material has good repeated measurement precision, and is low in cost and easy to process, and is disposable, clean and sanitary.

Description

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Claims

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Application Information

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Owner XI AN JIAOTONG UNIV
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