RU121149U1 - DEVICE FOR MEASURING AMPLITUDES OF LOWER JAW MOVEMENT - Google Patents

Abstract

A device for measuring the amplitude of movements of the lower jaw, which is a plate with measuring scales applied to it, characterized in that the device is made in the form of a T-shaped plate made of transparent material and contains two scales, one of which is located on the horizontal part of the plate, and the second is on a vertical, and the horizontal scale is shifted downward by a distance equal to the minimum displacement of the lower jaw in relation to the anterior teeth of the upper jaw; on the vertical scale, the dimensional divisions are made along its axis, and at the end of half-centimeter marks on both scales, there are arrows-indicators.

Description

The utility model relates to medicine, namely dentistry and can be used to measure the amplitude of the movements of the lower jaw in the treatment and functional diagnosis of diseases of the temporomandibular joint.

Currently, a ruler (1, 2, 3, 4, 5, 6) is used to measure the amplitude of movements of the lower jaw.

The disadvantage of this device is the duration and inaccuracy of the study.

As a prototype for the closest technical nature, we have chosen a ruler made in the form of a plate, along which both sides of which are measured scales. At the end of the line, a third measuring scale is applied. The middle part of the ruler between parallel scales is made transparent (4) (Figure 1).

The disadvantages of the prototype:

- the impossibility of simultaneously measuring the amplitude of the movements of the lower jaw, that is, opening the mouth and lateral displacements of the lower jaw;

- the inability to also examine the entire dentition of the lower jaw during its lateral movements due to the opacity of the ruler;

- the inconvenience of working with the ruler due to its bulkiness, which makes it impossible to visualize the entire oral cavity, which, in turn, deprives the doctor of control during measurements.

The objective of the utility model is to increase the usability of the design.

The technical result of the utility model is the ability to simultaneously measure the amplitude of the movements of the lower jaw, that is, opening the mouth and lateral displacements of the lower jaw, as well as the ability to examine the entire dentition of the lower jaw during its lateral movements.

The technical result of the utility model is achieved in that the device for measuring the amplitude of the movements of the lower jaw is made in the form of a T-shaped plate of transparent material and contains two scales placed both on the horizontal and vertical parts of the plate. The horizontal scale is shifted downward by a distance equal to the minimum displacement of the lower jaw with respect to the front teeth of the upper jaw. On a vertical scale, dimensional divisions are plotted along its axis. At the end of the half-centimeter marks on both scales are marked arrows pointers.

Distinctive essential features and a causal relationship between them and the achieved technical result:

- The device is made in the form of a T-shaped plate of transparent material and contains two scales placed both on the horizontal and on the vertical parts of the plate.

Vertical scale is designed to determine the height of the mouth. Horizontal - to determine the lateral displacement of the lower jaw.

The form of the device, namely the T-shape of the plate, is necessary for the possibility of simultaneously measuring the amplitude of the movements of the lower jaw, that is, its lateral displacements and opening the mouth, as well as the possibility of examining the entire dentition of the lower jaw during its lateral movements.

The implementation of a plate of transparent material is necessary for the visualization of measurements.

- The horizontal scale is shifted downward by a distance equal to the minimum displacement of the lower jaw with respect to the front teeth of the upper jaw.

A shift of the horizontal scale down by a distance equal to the minimum displacement of the lower jaw relative to the front teeth of the upper jaw is necessary to obtain free lateral movement in the temporomandibular joint.

- Measured divisions on a vertical scale are plotted along its axis.

Drawing dimensional divisions on a vertical scale along its axis is necessary to detect asymmetry in the movements of the lower jaw and allows you to level the location of the teeth of the lower jaw with both eyes, as if to level it with a horizontal beam.

- At the end of the half-centimeter marks on both scales are marked with arrow pointers.

Drawing on the end of half-centimeter marks on both scales of the pointer arrows facilitates the visualization of the necessary marks.

Figure 2 shows a General view of the inventive utility model, where:

1. - the horizontal part of the plate;

2. - the vertical part of the plate;

3. - horizontal scale;

4. - vertical scale;

5. - directional arrows;

The device operates as follows:

Measurement of the amplitude of movements of the temporomandibular joint in vertical direction:

The patient is asked to open his mouth. The horizontal part of the insert (1) is placed on the cutting edges of the central incisors, so that the middle of the vertical scale (4) located on the vertical part (2) of the insert is located between the first incisors. Then the patient is asked to open his mouth wide and, on a vertical scale (4), measure the width of the mouth opening taking into account the location of the cutting edges of the lower incisors, while orienting the arrows on the signs (5) on the end of the half-centimeter vertical scale drawings (4).

Measuring the amplitude of movements of the temporomandibular joint horizontally:

The patient is asked to close his teeth, and then open his mouth only half the height of the crown of the front incisors. Then the patient at the request of the doctor shifts the lower jaw to the right and left of the central incisors of the upper jaw. Through the horizontal part of the plate (1) made transparent, the horizontal scale (3) is used to determine the amplitude of the displacement of the lower jaw during lateral movements to the right and left of the first incisors of the upper jaw, while orienting the arrows on the signs (5) made at the end of half-centimeter horizontal drawings scales (3).

The utility model is made of transparent plastic.

Thus, the utility model allows you to simultaneously measure the amplitude of the movements of the lower jaw, that is, the opening of the mouth and lateral displacements of the lower jaw, and also makes it possible to examine the entire dentition of the lower jaw during its lateral movements, which significantly increases the usability of the design.

Bibliography:

1. Ivanov A.S. Arthritis and arthrosis of the temporomandibular joint. Lectures in dentistry L., LSGMI, 1984. - 32 s, C 9.

2. Petrosov Yu.A., Kalpakyants O.Yu., Seferyan N.Yu. Diseases of the temporomandibular joint. Krasnodar: "Soviet Kuban", 1966. - 352 c. C 96.

3. Khvatova V.A. Clinical Gnatology. - M .: OJSC Publishing House "Medicine", 2006. - 296 s, S 52-53.

4. Lebedenko I.Yu., Arutyunov S.D., Antonik M.M., Stupnikov A.A. Clinical methods for the diagnosis of functional disorders of the dentition. M., 2007 .-- 125 s, C 10.

5. Occlusion and clinical practice / Ed. I. Kliniberga, R. Jager. M .: Medpressinform, 2006 .-- 200 s, C 20-21.

6. Semkin V.A., Rabukhina N.A., Volkov S.I. Pathology of the temporomandibular joint. M .: Practical medicine. 2011 .-- 168 s, C 33-35.

Claims (1)

A device for measuring the amplitude of the movements of the lower jaw, which is a plate with measuring scales applied on it, characterized in that the device is made in the form of a T-shaped plate of transparent material and contains two scales, one of which is placed on the horizontal part of the plate, and the second - on the vertical, and the horizontal scale is shifted downward by a distance equal to the minimum displacement of the lower jaw with respect to the front teeth of the upper jaw, on the vertical scale, dimensional divisions are made along its axis, Arrows at the end of half-centimeter patterns on both scales are marked with directional arrows.