RU75934U1 - DEVICE FOR MEASURING A CARIES CAVITY - Google Patents

Abstract

The utility model relates to medical equipment and can be used in dentistry for the diagnosis of caries.

A device for measuring the carious cavity of the tooth contains a beam 1, at the end 2 of which there is a through longitudinal groove 3, in which a movable bracket 4 with a graduated shaft 5 having a head 6 is installed. The other end 7 of the beam 1 is placed in a longitudinal through groove 8 made on a graduated emphasis 9.

Description

The utility model relates to medical equipment and can be used in dentistry for the diagnosis of caries.

Known dental probe, consisting of a thin metal rod with a handle (Encyclopedic Dictionary of Medical Terms, edited by Ac. B.V. Petrovsky, Small Soviet Encyclopedia, 1982, v.1, p. 395).

The main disadvantage of this device is the low reliability of determining the degree of carious lesion of dentin. Diagnosis of caries with the help of such a probe is as follows: the doctor, moving the tip of the probe rod along the surface of the so-called pigmented dentin and pressing it with force to the surface, on the basis of a subjective analysis of his visual, tactile and auditory sensations, assesses the hardness of dentin, which is directly related with the degree of his carious lesion. As a rule, the darker the color and the lower the hardness of the dentin, the greater the degree of carious lesion. The subjective nature of the diagnosis determines the main disadvantage of known dental probes, namely the high probability of making an incorrect diagnosis of the state of dental tissue.

Closest to the proposed device and taken as a prototype is a dental probe for measuring the depth of a periodontal pocket in the form of a rod with a handle and a curved graduated tip [US Patent No. 5423677, A61C 19/04, 1995].

The known probe does not allow reproducible readings when measuring the depth of the periodontal pocket, which limits its functionality in the diagnosis and treatment of hard tooth tissues. In addition, its disadvantage is the lack of opportunity

simultaneous comparison of the depth of the cavity with the size of the tooth crown.

The problem, which this utility model is aimed at, is to create a device for measuring the cavity, which allows to increase the reliability of the result and the speed of diagnosis.

The problem is solved in that the device for measuring the carious cavity of the tooth, containing a graduated shaft, is equipped with a beam and an abutment, while at one end of the beam there is a through longitudinal groove in which the graduated rod is movably mounted, and the other end of the beam is placed in a longitudinal through groove, executed on the graduated emphasis.

The advantages of this utility model are that it allows the doctor to take measurements independently (without the help of an assistant) due to the ease of use of the device. It is also possible to simultaneously measure not only the depth of the cavity, but the height and width of the tooth crown. It is possible to apply a standard sterilization technique to this utility model for instruments made of stainless steel. The utility model has an inexpensive cost, is relatively simple to manufacture, has a compact size, which makes it easy to insert the device into the oral cavity and measure the parameters of teeth located in the distal dentition.

The claimed device is illustrated in the drawing, which shows:

Figure 1 - General view of the device for measuring the carious cavity of the tooth;

Figure 2 is a top view;

Figure 3 - section aa in figure 1;

Figure 4 is a General view of the device mounted on the studied teeth.

The claimed device comprises a beam 1 (Fig. 1), at the end 2 (Fig. 2) of which a through longitudinal groove 3 is made, in which a movable bracket 4 is installed with a graduated shaft 5 (Fig. 1) having a head

6. The other end 7 of the beam 1 is placed in a longitudinal through groove 8 (figure 3), made on a graded stop 9.

A device for measuring a cavity is as follows.

The device is introduced into the oral cavity, while the emphasis 9 (Fig. 4) is installed in the marginal gum so that the emphasis 9 is and fits snugly in the contact zone between adjacent teeth. The beam 1 is installed on top of the chewing surface of the test tooth so that the graduated shaft 5 (Fig. 1) is above the prepared carious cavity. This is achieved by moving the movable bracket 4 in the through longitudinal groove 3 (figure 2) of the beam 1 (figure 1). Beam 1 should fit snugly on the chewing surface of the tooth under study. This movement of the beam 1 is achieved due to the displacement of the end 7 in the longitudinal through groove 8 (Fig.3), made on the abutment 9. Then lower the graduated rod 5 (Fig.4) to the bottom of the previously prepared carious cavity with a dense (light or pigmented) dentin so that without pressure it touches the bottom of the cavity. In this case, the beam 1 is parallel to the bottom of the cavity, and the graduated rod 5 is perpendicular to the bottom. This manipulation allows you to simultaneously determine the depth of the cavity and the height of the tooth crown due to graduated notches located on the shaft 5 (figure 1) and on the stop 9 (figure 4).

When the cavity is located in the cervical region (Black class 5), this device is placed taking into account the anatomical features of the cavities of this class. Thus, a comparison is made of the depth of the cavity with the width of the crown.

Claims (1)

A device for measuring a carious cavity of a tooth, comprising a graduated shaft, characterized in that it is provided with a beam and a stop, wherein a through longitudinal groove is made at one end of the beam, in which the graduated shaft is movably mounted, and the other end of the beam is placed in a longitudinal through groove made on graduated emphasis.