RU187973U1 - Impression spoon - Google Patents

Abstract

The utility model relates to the field of medicine and polymer chemistry, more specifically to facial surgery, and can be used for examination, treatment and prosthetics of both an individual tooth (s) and the entire jaw of a patient using the device disclosed in this utility model The impression dental spoon is made in the form of a monolithic body of polymer material and contains an elongated central part located along the longitudinal axis of the spoon, as well as a first component attached to the central part and a second comp nentes made in size for placement in the patient’s oral cavity after placing material on it to obtain an impression of the patient, while these components are bent relative to the longitudinal axis with the formation of symmetrical right and left end parts, with many sectors located between the first and second components along the entire plane of the bend at equal intervals between each other, each of the sectors, except the last, located respectively on the left and right sides, is connected by opposite sides we, respectively, to the first and second component with the help of two elements of weakened cross-section for each side, with the possibility of removing the corresponding sector. The technical result of the utility model is to simplify the use of an impression tray by a doctor and, as a result, increase the usability and reduce the time of manipulation during prosthetics.

Description

The utility model relates to the field of medicine and polymer chemistry, more specifically to facial surgery, and can be used for examination, treatment and prosthetics of both an individual tooth (s) and the entire jaw of a patient using the device disclosed in this utility model .

State of the art

Impression spoons (OL) for dental instruments are used to remove impressions from the patient’s teeth during dental orthopedic treatment of humans. Impression spoons are for the teeth of the upper and lower jaw, i.e. upper and lower, of different sizes, collapsible and non-collapsible, disposable and reusable.

In particular, from the patent RU 2555109 C2, 07/10/2015, A61C 9/00, a set of denture impression spoons is known comprising: an upper spoon made to fit in the patient’s oral cavity after placing material on it to obtain the first impression of the patient’s gum; and a lower spoon, comprising: a first component sized to fit in the patient’s oral cavity after placing material on it to obtain a second impression of the patient’s gum, said first component being bent relative to the central part to form a right end part and a left end part; and a pair of second components reversibly attached to the first component, in which the right part of the specified pair of second components is connected to the right end part of the first component, the left part of the specified pair of second components is connected to the left end part of the first component, while the size of the specified lower spoon corresponds to the size of the pair second components connected to the first component, wherein said pair of second components is adjusted to fit the patient’s gums when said pair of second components entov is connected to the first component; wherein the second impression is obtained after the first component is inserted into the patient’s oral cavity with a pair of second components attached, the pair of the second components being detachable from the first component after receiving the second impression, and the upper spoon containing the first impression and the first component of the lower spoon containing the second impression, adapted for joint introduction into the oral cavity to measure the ratio of the jaws, such as the vertical distance and the central ratio, while the gap formed by I am waiting for the upper spoon containing the first impression and the first component of the lower spoon containing the second impression, made to fit the material for bite registration to determine the bite, and the next impression of the patient’s gums is obtained when a pair of second components is attached back to the first component and at least the lower spoon is inserted into the oral cavity after the impression material is introduced into the second components.

Similar designs are also known from the following patent sources: DE 102004025508 A1, 12/29/2005; US2013260331 A1, 03.10. 2013; DE 4002479 A1, 08/01/1991; BG 51339 A3, 04/15/1993; RU 2401083 C1, 10/10/2010.

With the advent of dental implants, the process of taking impressions became more complicated, since it became necessary to make holes in the OL for impression modules (transfers) installed in the implants. Dentists make holes in the OL on their own using a drill and a milling cutter. These manipulations increase the treatment time, accompanied by an unpleasant sound and shavings that contaminate the dentist's hands and workplace. To address these shortcomings, some manufacturers produce OL with removable sectors. However, these samples have several disadvantages:

- sectors are structurally large, which leads to excessive leakage of the impression mass through the sector;

- OL with such sectors are made only of metal, which greatly increases their price relative to OL from plastic;

- sectors in such OLs are most often fixed with screws, which is not convenient due to the loss of time for screwing and the appearance of additional elements in the form of a screwdriver and screws.

This application proposes to perform OL from plastic with many removable sectors for both ordinary prints and for working with open transfers.

The features of this OL are that:

- there is no need to drill holes in the OL for impressions with open transfers due to the presence of deleted sectors in the structure;

- removal of sectors is performed by a light manipulation of the doctor within a few seconds using a dental trowel.

Utility Model Disclosure

The technical problem that the present utility model is aimed at is expanding the functionality of the impression tray, as well as creating a more universal design that is applicable to both upper and lower OL.

This problem is solved due to the fact that the impression dental spoon, according to the utility model, is made in the form of a monolithic body of polymer material and contains an elongated central part located along the longitudinal axis of the spoon, as well as a first component attached to the central part and a second component, made in size for placement in the patient’s oral cavity after placing material on it to obtain a patient’s impression, while these components are bent relative to the longitudinal axis with images symmetrical right and left end parts, while between the first and second components there are many sectors located along the entire plane of the bend at equal intervals between each other sectors, except the last one, located respectively on the left and right parts, are connected by opposite sides , respectively, to the first and second component using two elements of weakened section for each side, with the possibility of removing the corresponding sector.

The last sectors are attached to the first and second components with corresponding opposite end faces along the entire plane of the latter.

The first and second components are made U-shaped.

The first component is made in the form of a strip, with the central part attached to the developed surface of the strip.

The second component is made in the form of a strip, with 2/3 of the internal space formed by the left and right end parts of the second component, made in the form of a concave supporting platform, attached, with the formation of a rounding, to one of the longest end surfaces of the strip and the formation of a single monolithic body second component.

In the first and second components, slotted technological holes are made longitudinal with respect to the bending plane.

The distance between the corresponding right and left end parts of the first and second components is maximum at the farthest point from the bend point, through which the longitudinal axis of symmetry of the spoon passes, while the minimum distance between the first and second components is at the bend point.

Each of the sectors is made in the form of a strip of equal or lesser thickness than the thickness of the first and second components.

Each of the sectors in the place of attachment to the first component is made with a bend.

The opposite ends of each of the sectors, except the last one, located respectively on the left and right sides, are made in the shape of a channel in its cross section.

The spoon is made of polystyrene by injection molding.

A support element is made on the surface of the central part for positioning the user's finger on it.

The supporting element is made of a volumetric annular shape with a recess in the Central part.

The technical result of the utility model is to simplify the use of an impression tray by a doctor and, as a result, increase the usability and reduce the time for manipulations with prosthetics.

Utility Model Implementation

In this section, the most preferred embodiment of the claimed impression tray will be disclosed, namely, the upper OL version, which, however, does not exclude other possible variants of its implementation (for example, lower OL) obviously following from this application.

The claimed impression dental spoon is intended for the teeth of the upper jaw and is made in the form of a monolithic body of a polymeric material, such as polystyrene by injection molding. One of the remarkable qualities of polystyrene that distinguishes it from a number of similar polymers is its frost resistance: this plastic does not lose its properties at temperatures up to -40 ° C. However, it must be understood that, in principle, any polymer material that can be used for medical purposes and suitable for the performance of medical instruments can be used. In addition, as a method of obtaining such a spoon, the method of feeding the melt into the mold, injection molding, etc. can be used.

The term "monolithic body" in the context of this application refers to the fact that the spoon is made in one (maximum two) production cycle and does not contain any adhesive or other connections between its parts, which will be described below.

The spoon contains an elongated central part located along the longitudinal axis of the spoon, and which, in fact, is a handle for holding the spoon by the doctor during manipulations with it. On the surface of the central part, approximately in the middle, a support element of a volume annular shape with a recess in the central part is made for positioning a user's finger on it. This support element can go beyond the handle contour with its dimensions.

In addition, the spoon includes a first and second component, made in size for placement in the patient’s oral cavity after placing material on it to obtain a patient’s impression.

The first and second components are made U-shaped. In this case, the U-shape is not understood to be strictly vertical walls, but parabolas diverging in shape (for the lower OL) or close to the half-shaft (for the upper OL).

These components are bent relative to the longitudinal axis with the formation of symmetrical right and left end parts. By parts we mean the corresponding curved segment, starting from the place of inflection and until the end of the corresponding part.

The first component is made in the form of a strip, with the central part (handle) attached to the developed surface of the strip at the bend. By a strip is meant a piece of material whose length and width far exceeds its thickness.

The second component is also made in the form of a strip, which is located inside the bend contour of the strip of the first component and is made, respectively, of shorter length. In this case, 2/3 of the internal space formed by the left and right end parts of the second component is made in the form of a concave supporting platform connected, with the formation of a rounding, to one of the longest end surfaces of the strip and the formation of a single monolithic body of the second component. In other words, the space located inside the strip of the second component is filled with polymer. The sky rests on the indicated supporting platform. When performing the lower OL, the indicated inner space formed by the left and right end parts of the second component remains empty, for the possibility of locating the tongue in the resulting cutout.

Between the first and second components there are many sectors located along the entire plane of the bend at equal intervals between them. Each of the sectors is made in the form of a strip of equal thickness with the thickness of the first and second components. However, in another embodiment, this thickness may be less. The bands are, in fact, volumetric pyramidal segments, the smaller base of which is attached to the strip of the second component, and the larger ones to the strip of the first component.

Each of the sectors, except the last one, located, respectively, on the left and right parts, is connected by opposite sides, respectively, to the first and second component using two weakened section elements for each side, with the possibility of removing the corresponding sector. Thus, respectively, the opposite ends of each of the sectors are made in the shape of a channel in its cross section. In addition, each of the sectors in the place of attachment to the first component is made with a smooth bend.

The last sector on the right and left parts, respectively, acts as a stiffener, since it is attached to the first and second components with its corresponding opposite end faces along the entire plane of the latter.

In the first and second components, slotted technological holes are made longitudinal with respect to the bending plane. The number, size and location of the holes on the left and right sides are symmetrical.

Since, as noted above, the shape of the components resembles a parabola, the distance between the corresponding right and left end parts of the first and second components is maximum at the farthest point from the bend point through which the longitudinal axis of symmetry of the spoon passes, while the minimum distance between the first and second components located at said bend point. Here, the bending point is understood as the point where the left part goes to the right (zero point).

It should be noted that the shape of the components (burs) and the handle is not essential. Moreover, in this example, the upper spoon is presented, and the same bottom will be on the lower spoon. However, the lower spoon has a different shape of the spoon itself, since there is a cut out under the tongue, and on the top in its place is a platform for the palate. The shape of the tooth part at the upper and lower OL is different: at the top, it is close to the half-shaft, and at the bottom to the parabola.

The use of the claimed design of an impression spoon (OL) is as follows.

During treatment, if a patient is attached with a transfer to the implant, it is necessary to make an impression of the impression mass from the teeth and transfer. To do this, try on the OL in the mouth, and opposite the transfer, there should be a hole in it for unscrewing the transfer screw. The difficulty lies in the fact that when trying on, when the spoon covers itself and the teeth and the transfer are difficult to understand where the transfer is projected. Therefore, the bottom of the spoon should be transparent.

When it is clear which part of the spoon the transfer is projected into, you need to make a hole in it. The doctor easily breaks out the desired projection sector in the bottom of the spoon with any thin instrument. Further, the work process does not differ from the generally accepted one: the impression mass is applied in the OL and squeezed out on the teeth so that the transfer coincides with the hole in the spoon. After the impression mass has hardened, the transfer screw is unscrewed from the implant through a hole in the OL (due to the removal of the desired sector). As a result, the transfer ceases to be connected to the implant and is easily removed from the mouth together with OL, remaining in the hardened impression mass. On this, the medical protocol is completed. Next, the print is given to the dental laboratory.

Thus, the claimed design, compared with existing analogues, is much simpler and more convenient to use due to the lack of the need to use additional tools (such as a screwdriver, hardware, etc., for metal OL) to remove the necessary sectors. Removing plastic sectors with a weakened cross section requires significantly less time and is performed by a doctor without any difficulty.

Claims (10)

1. Impressive dental spoon, characterized in that it is made in the form of a monolithic body of polymer material and contains an elongated central part located along the longitudinal axis of the spoon, as well as the first component attached to the Central part, and the second component, made to fit in the patient’s oral cavity after placing material on it to obtain an impression of the patient, while these components are bent relative to the longitudinal axis with the formation of symmetrical right and left ends parts, while between the first and second components there are many sectors located along the entire bend plane with equal intervals between each other, each of the sectors, except the last one, located respectively on the left and right parts, is connected by opposite sides, respectively, to the first and the second component using two elements of weakened section for each side, with the possibility of removing the corresponding sector. 2. A spoon according to claim 1, characterized in that the last sectors are attached to the first and second components with corresponding opposite end faces along the entire plane of the latter. 3. The spoon according to claim 1, characterized in that the first and second components are made U-shaped. 4. A spoon according to claim 3, characterized in that the first component is made in the form of a strip, with the central part attached to the developed surface of the strip. 5. A spoon according to claim 3, characterized in that the second component is made in the form of a strip, while 2/3 of the internal space formed by the left and right end parts of the second component is made in the form of a concave supporting platform connected to form a rounding, one of the longest end surfaces of the strip and the formation of a single monolithic body of the second component. 6. A spoon according to claim 3, characterized in that in the first and second components, slotted technological holes are longitudinal with respect to the bending plane. 7. A spoon according to claim 3, characterized in that the distance between the corresponding right and left end parts of the first and second components is maximum at the farthest point from the bend point through which the longitudinal axis of symmetry of the spoon passes, while the minimum distance between the first and second components located at said bend point. 8. A spoon according to claim 1, characterized in that each of the sectors in the place of attachment to the first component is made with a bend. 9. A spoon according to claim 1, characterized in that the opposite ends of each of the sectors, except the last, located, respectively, on the left and right sides, are made in the shape of a channel in its cross section. 10. A spoon according to claim 1, characterized in that on the surface of the central part there is a support element of a volumetric annular shape with a recess in the central part for positioning the user's finger on it.