High-precision occlusal force measuring instrument based on single chip microcomputer control and method

Abstract

The invention discloses a high-precision occlusal force measuring instrument based on single chip microcomputer control and a method. The high-precision occlusal force measuring instrument includes ameasuring instrument body, the measuring instrument body is connected with an occlusal end through an L-shaped connecting pipe, and the L-shaped connecting pipe and the measuring instrument body are connected in an inserting-connection mode. The occlusal end includes two occlusion pads arranged opposite to each other up and down, and a replaceable piezoelectric film sensor is clamped between the two occlusion pads. The piezoelectric film sensor is connected with a signal processing unit, the signal processing unit is connected with a single chip microcomputer, and the single chip microcomputerconverts the voltage signal of the piezoelectric film sensor into an occlusal force value. The measuring instrument uses the piezoelectric thin film sensor to increase the comfort of the occlusion and the accuracy of the measuring results, the L-shaped connecting pipe is arranged, and the occlusion interference of the adjacent teeth during occlusion can be avoided.

Description

technical field [0001] The disclosure belongs to the technical field of dental occlusal force detection, and in particular relates to a high-precision occlusal force measuring instrument and method based on single-chip microcomputer control. Background technique [0002] Bite force refers to the masticatory pressure produced by the contraction of the masticatory muscles when the upper and lower teeth are in contact. It is an important symbol reflecting the oromandibular masticatory system. It is widely used in the postoperative masticatory function of bruxism, mandibular joint disorder, surgical treatment and other diseases. Recovery metrics. Occlusal force analysis is of great significance in the field of stomatology. Measuring occlusal force helps to understand the function of the oral and maxillary system, the health of the tooth, periodontal and masticatory muscles, and is an objective tool commonly used in oral restoration and orthodontic treatment. evaluation index. ...

AI Technical Summary

Problems solved by technology

However, the inventors found that the currently commonly used occlusal force measuring instrument has deficiencies in accurate positioning and avoiding electromagnetic interference when measuring the occlusal force of a single tooth

[0003] Existing patents related to bite force measurement devices, such as the patent with the publication number CN105030259A, use a resistance strain gauge to measure the bite force by using the deformation of the cantilever bracket due to the bite force to change the resistance of the resistance strain gauge. However, due to the thickness of the hemispherical convex cantilever bracket, which interferes with the normal occlusal process, and the occlusal end cannot be disassembled, replaced and high-temperature sterilized, the deformation after long-term use is large, and the measurement results are not accurate enough. At the same time, the body of the measuring instrument is designed as a rectangular grip Poor; for example, in the patent with publication number CN106974665A, the occlusal end is designed as an airbag with a certain initial air pressure. By detecting the initial air pressure value inside the airbag and the air pressure inside the airbag under different external pressures, the corresponding relationship between the airbag air pressure difference and the occlusal force is established , but did not consider the error caused by the air expansion inside the airbag caused by the temperature of the oral cavity during measurement. At the same time, the volume of the airbag is large, which affects the patient's masticatory muscle force, and will also cause interference from occlusion of adjacent teeth; for example, the publication number is CN105686838A patent, the occlusal end and the body of the measuring instrument are designed to be a straight line. In practical applications, it is necessary to extend into the measuring instrument from the side of the mouth to avoid the occlusal interference of the adjacent teeth on the cantilever bracket, which increases the difficulty of clinical operation. At the same time, the electrical signal output by the resistance strain sensor has not been amplified and filtered, there are many interference signals, and the measurement results are not accurate enough

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