RU2618080C1 - Device for impression material base layer formation - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention is intended for application in prosthetic dentistry to form the impression material base layer before impression material correcting layer application using the "sandwich" technique of two-layer print removal. The device for impression material base layer formation contains a round wheel mounted on an axle with a possibility of rotation, and a bracket connected to the handle. The round wheel has a width corresponding to the average size of the patient's teeth, the wheel rim has an oval shape with the possibility to form a groove along the entire dentition length, and the wheel axle is set in the holder.

EFFECT: invention prevents the correcting mass from premature squeezing from the impression tray, loosely filling the voids and accurately displaying the recorded underlying tissues.

2 cl, 1 dwg

Description

Device for forming a base layer of impression material.

The invention relates to the field of medical equipment and is intended for use in orthopedic dentistry for forming a base layer of impression material before applying a corrective layer of impression material using a “sandwich” technique for removing a two-layer impression.

A known tool for removing interdental septa, including a working cutting part and a holder consisting of two lamellar branches of medical tweezers located next to each other in the longitudinal direction of the axis, rigidly connected on one side and having supporting surfaces under the fingers on opposite sides, and the working cutting part of the instrument is made in the form of a steel string 8-10 mm long, with a diameter of 0.008 to 0.013 inches, connecting the working ends of the branches at the periphery (RU 2 428 139 C1, publ. 09/10/2011). This tool is used in dental practice to remove interdental septa when forming a preliminary base layer to apply corrective mass by the method of obtaining a two-stage two-layer impression by elastomers.

The problem to which this invention is directed is the creation of a device that provides the ability to create recesses in the form of a dentition or a toothless portion of the jaw with simultaneous application of a base and corrective material to the impression spoon with a one-stage method for producing two-layer impressions with elastomers.

In dental practice, with a one-stage technique for producing two-layer impressions with elastomers, the corrective material spreads over the surface of the impression and after removing the spoon from the oral cavity, there are delays and inaccuracies on the impression. To eliminate this negative effect, dentists try with their fingers, after applying the base layer of the mass, to create recesses in the form of a dentition or a toothless part of the jaw, into which correction material is subsequently introduced. However, these recesses are irregular in shape and their formation is hampered by the mismatch of the thickness of the fingers and the necessary space between the base and corrective layers of the impression material, for accurate transmission of the removed tissues of the oral cavity.

The technical result of the invention is that when using the claimed device, the corrective mass has no obstacles in the form of a base layer and therefore is not subjected to premature squeezing out of the spoon, freely filling the voids and qualitatively displaying the removed underlying tissue.

The technical result is achieved due to the fact that the device for forming the base layer of the impression material contains a wheel mounted on the axis with the possibility of circular rotation, made with a width corresponding to the average patient tooth size of 8 mm, and a holder connected to the handle, while the wheel edge has an oval shape with the possibility of forming a furrow along the entire length of the dentition, and the axis of the wheel is installed in the holder.

The invention is illustrated in the drawing, where 1 is a round wheel on the axis, 2 is a wheel holder, 3 is a handle.

The device for forming the base layer of the impression material contains a round wheel 1 mounted on the axis of rotation, made with a width corresponding to the average width of the patient’s teeth 8 mm, a holder 2 connected to the handle 3. The edge of the round wheel 1 has an oval shape with the possibility of forming a furrow along the entire length of the dentition. The axis of the round wheel 1 is installed in the holder 2. The wheel is made of metal or dense rubber. The handle can be made curved at an angle of 20 degrees.

The device operates as follows. After applying the base layer on the impression spoon, the doctor, holding the device by the handle, by means of a rotating round wheel (its edge has an oval shape), forms a furrow along the entire length of the dentition with a depth and width corresponding to the size of the patient’s teeth. After that, the created space is filled with a correlating layer and the impression is introduced into the oral cavity.

In addition, this device can also be used when removing two-stage prints or only a print of the base layer (for example, a print of antagonists), which significantly improves their quality. Working with the proposed device requires less impression base mass, which leads to material savings.

Claims (2)

1. A device for forming a base layer of impression material, characterized in that it contains a round wheel mounted on the axis with the possibility of rotation and a holder connected to a handle, while the round wheel is made with a width corresponding to the average size of the patient’s teeth, the wheel edge is oval with the possibility of forming a furrow along the entire length of the dentition, and the wheel axis is installed in the holder. 2. The device according to claim 1, characterized in that the handle is made curved at an angle of 20 degrees.

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