CN216124610U

CN216124610U - Tooth movement auxiliary measuring device

Info

Publication number: CN216124610U
Application number: CN202121988872.5U
Authority: CN
Inventors: 赵喆; 王富; 陈吉华
Original assignee: Fourth Military Medical University FMMU
Current assignee: Fourth Military Medical University FMMU
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-03-25
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a tooth movement auxiliary measuring device, which comprises a measuring block, a constant voltage power supply and a displacement sensor, wherein the displacement sensor is connected with a data acquisition card, and the output end of the data acquisition card is connected with the input end of a computer; in the measuring state, the displacement sensor and the measuring block are arranged on the teeth which move relatively. By adopting the measuring device, based on the displacement sensor and the measuring block, the tooth displacement can be measured and recorded by a single person, so that the measuring device is more convenient and accurate; the utility model has the advantages of reasonable scheme, simple structure and easy realization.

Description

Tooth movement auxiliary measuring device

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a tooth movement auxiliary measuring device.

Background

Tooth movement is a basic physiological characteristic in the chewing process, and plays an important role in maintaining the stress balance of dental arches, avoiding the occurrence of food impaction and the like. With the progress of research in recent years, new techniques and new methods are being applied, and the research on tooth movement is being advanced. However, at present, no measuring device for accurately measuring tooth movement in the occlusion process exists in China, the measuring device reported abroad is complicated, the assembly and fixation are difficult, the measuring precision is limited, and the measuring tooth position is limited, so that most of the measuring devices are measuring devices for anterior tooth areas. The measuring device manufactured by the utility model has simple structure, convenient operation and high precision, and can be used for all teeth positions without being limited by the teeth positions.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a tooth movement auxiliary measuring device which is simple in structure, convenient to operate, high in accuracy and free from limitation of tooth positions, and can be used for all tooth positions of the mouth.

In order to achieve the purpose, the utility model adopts the technical scheme that: a tooth movement auxiliary measuring device comprises a measuring block, a constant voltage power supply and a displacement sensor, wherein the displacement sensor is connected with a data acquisition card, and the output end of the data acquisition card is connected with the input end of a computer; in the measuring state, the displacement sensor and the measuring block are arranged on the teeth which move relatively.

The model of the displacement sensor is FXL-PA3X 3-10.

The supply voltage of the constant voltage power supply is 12V.

The output end of the constant voltage power supply is provided with a voltage stabilizer.

A first measuring block and a first displacement sensor are also provided for measuring displacement of the tooth in a first direction by the first measuring block and the first displacement sensor.

The data acquisition card adopts MMC, and the model is USB-231.

The linear measuring range of the displacement sensor is 3mm, and the accuracy can reach ten thousandth of millimeter.

The measuring block is not more than 5mm³The edges and corners of the measuring block are chamfered.

Compared with the prior art, the utility model has at least the following beneficial effects:

by adopting the measuring device, based on the displacement sensor and the measuring block, the tooth displacement can be measured and recorded by a single person, so that the measuring device is more convenient and accurate; the utility model has the advantages of reasonable scheme, simple structure and easy realization.

Furthermore, the linear measuring range of the used displacement sensor is 3mm, the accuracy can reach one ten thousandth, the displacement below 1 micron can be measured, the diameter of the used displacement sensor is 1cm, the length of the used displacement sensor is 6.5cm, the size of the used displacement sensor is small, the displacement sensor is easy to fix, the device is simple, and the assembly and the fixation are both convenient to operate.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic view of the measurement of the present invention.

FIG. 3 is a strip chart of the initial state of measurement.

FIG. 4 is a strip chart of the measurement results of one embodiment.

FIG. 5 is a schematic diagram of another embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the tooth movement auxiliary measuring device provided by the utility model comprises a measuring block, a constant voltage power supply and a displacement sensor, wherein the displacement sensor is connected with a data acquisition card, the output end of the data acquisition card is connected with the input end of a computer, and the displacement sensor and the measuring block are arranged on teeth which move relatively;

in order to avoid discomfort or injury to oral cavity soft tissues caused by the measuring block, the edges and corners of the measuring block are subjected to rounding treatment.

Referring to fig. 5, it is understood that another set of displacement sensors and measuring blocks may be provided simultaneously to measure the displacement of the teeth in the second direction; the other set of displacement sensors and the measuring block have a set angle with the first set of measured directions.

The measuring block adopts a brass block, wherein the constant voltage power supply is used for ensuring that the output voltage is 12V voltage required by the sensor, and the voltage is stably output by 12V due to higher accuracy of the sensor; the displacement sensor measures the movement amount by measuring the extension and contraction of the probe; the data acquisition card is used for acquiring voltage signals output by the sensor; the voltage signal is converted to a displacement signal according to the voltage/span ratio of the sensor.

Referring to fig. 1 and 2, a tooth movement measuring procedure is described by taking first and second molars as an example:

the subject sits on a dental chair in an upright posture, looking straight ahead.

Second, before the test starts, the patient is ordered to do chewing movement, and the patient is helped to find the crossing and dislocation of the cusps.

Thirdly, the measuring device is abutted, the tooth surface is dried, and a 5mm3 brass block is fixed in the center of the buccal side of the first molar by using instant adhesive, so that the side wall of the brass block is vertical to the tooth surface.

And fourthly, fixing the displacement sensor on the second molar to ensure that the measuring head is vertical to the middle surface of the brass block and keeps contact with the middle surface. Subjects were instructed to bite with normal occlusal force. And storing the voltage change data, and converting the voltage/displacement ratio to obtain data which is the relative movement distance of the first molar and the second molar in the occlusion state.

Referring to fig. 3 and 4, the initial voltage of the displacement sensor after the power is turned on in the initial state (the unfixed state of the displacement sensor) is 0.0652V, and the displacement sensor is unfixed on the tooth to be measured, and the measured dimension is the initial length and is not pressed. After the displacement sensor is fixed, the probe head is pressed against the metal block, the stress of the probe head has a slight compression, and the voltage is not determined to be 2.135V in the non-occlusion state. After the subject bites, the displacement sensor probe is further compressed, the voltage signal rises to a peak value of about 2.200V, and the voltage signal decreases to the original non-biting voltage (2.135V) after the teeth are released. The displacement change situation between two teeth is monitored in real time through the change of the voltage signal in the whole process, the voltage curve reflects the movement situation of the teeth, and the tooth displacement monitoring device has the characteristics of high precision and high sensitivity.

Claims

1. A tooth movement auxiliary measuring device is characterized by comprising a measuring block, a constant voltage power supply and a displacement sensor, wherein the displacement sensor is connected with a data acquisition card, and the output end of the data acquisition card is connected with the input end of a computer; in the measuring state, the displacement sensor and the measuring block are arranged on the teeth which move relatively.

2. Tooth movement auxiliary measuring device according to claim 1, characterized in that the displacement sensor is of the type FXL-PA3X 3-10.

3. The dental movement auxiliary measuring device as claimed in claim 1, wherein the constant voltage power supply has a supply voltage of 12V.

4. A dental movement auxiliary measuring device according to claim 3, characterized in that a voltage regulator is provided at the output of the constant voltage power supply.

5. A dental movement aid measuring device according to claim 1 wherein a first measuring block and a first displacement sensor are provided for measuring displacement of the tooth in the first direction.

6. A dental movement auxiliary measuring device according to claim 1, characterized in that the data acquisition card is MMC, type USB-231.

7. A dental movement auxiliary measuring device according to claim 1, wherein the displacement sensor has a linear range of 3mm with an accuracy of ten thousandths of a millimeter.

8. A dental movement auxiliary measuring device according to claim 1, characterised in that the measuring block takes up no more than 5mm³The edges and corners of the measuring block are chamfered.