RU2509541C2 - Dental impression device and method for using it - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine, namely to orthopaedic dentistry, and aims at simultaneous impression taking of upper and lower dentures, as well s separately of upper, lower jaws or parts thereof. A dental impression device comprises a suction pump with a reducing valve and a vacuum hose. An impression material is an elastic U-shaper filled with a bulk that is talcum powder, comprising a neck and an annular sealing, and an assembled body inserted into the neck. The assembled body consists of the body itself with an annular groove, a filter cartridge, a non-return valve to prevent loss of pressure, a non-return valve seat in vacuum an internal opening of which is funnel-shaped with rounded walls, and a screw cap to avoid the non-return valve drop out from the body. The annular sealing of the neck of the elastic shaper comes into the annular groove of the body. A vacuum hose connected to the suction pump with the reducing valve is attached to the body. The method for dental impression consists in the fact that an impression process involves generating primary vacuum in the elastic shaper, correcting outer and inner surfaces of the impressions, and a final impression is formed by generating secondary vacuum. To form occlusal surfaces, the upper and lower impressions are formed simultaneously. To prepare another dental impression, vacuum is released by moving the non-return valve from the body seat. To prepare upper or lower dental impressions, an impression tray is used; a front portion of the tray comprises a socket for the body assembled with the filter cartridge and a portion of the neck of the elastic shaper.

EFFECT: due to using the device correcting the impression in process, the method enables impressing the oral cavity accurately and eliminating the problem of vomiting reflex in elderly people and children.

5 cl, 3 dwg

Description

The claimed technical solution relates to medicine, namely to orthopedic dentistry, and can be used both for simultaneous removal of impressions from the dentition of the upper and lower jaws, and separately the upper, lower jaws and their parts.

A technical solution is known for the patent No. 2269971 dated 10/20/2004, IPC А61С 9/00 (2006.01), RU. A method of obtaining high-precision dental impressions is carried out using corrective and basic impression materials and a standard impression tray. Initially, a mini-spoon is made covering the abutment teeth, the gingival region and the crown part of the adjacent teeth, corrective impression material is introduced into the mini-spoon, the area of the gingival groove of the abutment teeth and the prosthetic bed, after which the mini-spoon is placed on the corresponding section of the prosthetic bed, and then a standard impression tray filled with the base impression material is applied over the entire dentition, including the portion of the prosthetic bed covered with a mini-spoon.

The disadvantages of this method are the constant use of impression masses, the complexity of use, the lack of the ability to simultaneously take an impression of the upper and lower jaws, the lack of the ability to simultaneously obtain occlusal surfaces, the inability to unify when taking impressions of the left, right side, front teeth separately, top and bottom and simultaneously top and bottom the impossibility of reusable impression materials.

A technical solution is known for the patent No. 2423955 of December 22, 2009, IPC A61F 9/00 (2006.01), RU. An anatomical impression is obtained with an alginate mass using a standard spoon, according to which a gypsum model is made. An obturator is modeled on it by lining a positive imaging of a sky defect with wax while simulating a resected alveolar ridge. Set the resulting composition in the oral cavity and fit by filling up possible gaps with wax. An impression is obtained, according to which an individual spoon is made. The resulting spoon is adapted in the oral cavity using known functional tests. Set retention metal staples in a wax obturator fixed in the defect of the jaw. A corrective layer of silicone impression mass is applied to the resulting composition, after which an impression is made of a previously made individual spoon with a base layer of impression mass introduced into it.

The disadvantages of this method are the complexity of the method, the constant use of impression masses, the lack of the possibility of simultaneous casting of the impression of the upper and lower jaws, the lack of the possibility of simultaneously obtaining occlusal surfaces, the inability to unify when taking casts of separately left and right sides, front teeth, separately top and bottom and simultaneously top and the bottom, the inability to reuse cast materials.

A technical solution is known for the patent No. 2323445 of 12/27/2006, IPC А61С 9/00 (2006.01), RU. The device for receiving impressions from the upper jaw with defects of the sky is made in the form of a spoon consisting of a pen, body and sides. On the working surface of the body of the spoon, a hemispherical elevating region is additionally made, facing the side of the tissue defect, on which longitudinal, transverse and circular grooves are made.

The disadvantages of this device are the presence of a hemispherical elevating region, which does not allow the use of an elastic forming element, as well as the difficulty of use, the inability to simultaneously take an impression of the upper and lower jaws, the inability to reuse the impression masses, the inability to simultaneously obtain occlusal surfaces, the constant use of impression masses , the impossibility of unification when taking casts separately of the left and right sides, before teeth, separately top and bottom and simultaneously top and bottom.

Known technical solution for the patent No. 2236827 from 04.16.2003, IPC 7 А61С 9/00, RU. A spoon for simultaneous removal of impressions from the upper and lower jaws contains a handle and a bed for impression material, made in the form of a tape curved in the shape of the alveolar process with the formation of a through groove for the impression material and including thickened working surfaces connected by horizontal jumpers. Thickened working surfaces are made in the form of vertically expanding sides in the area of the dentition defect from the vestibular and oral surfaces.

The disadvantages of this device, made in the form of a tape, is that it does not allow the use of an elastic forming element, as well as the difficulty of use, only the one-time use of impression masses, the inability to simultaneously obtain occlusal surfaces, the constant use of impression masses, the inability to unify when taking impressions separately left and the right side, front teeth, separately top and bottom and simultaneously top and bottom.

The technical result of the invention is to improve the quality of prints due to high dimensional accuracy, the ability to correct the print in the process of obtaining the impression, the possibility of reusable use of the device in the process of taking the impression, the possibility of simultaneously taking the impression from the upper and lower jaws or their parts, as well as separately the upper or lower jaws , the simultaneous receipt of occlusal surfaces of the teeth of the upper and lower jaws, simplifying the procedure for taking casts.

The goal is achieved as follows.

A device for producing molds of teeth containing impression material, moreover,

- as an impression material made device in the form of an elastic forming element,

- elastic forming element is made horseshoe-shaped,

- elastic forming element made with a neck and with an annular seal,

- the elastic forming element is filled with a loose molding material, for example talc,

- a housing with a filter element is installed in the elastic forming element to prevent the pouring of loose molding material when creating a vacuum,

- a check valve is installed in the housing with the filtering element to prevent depressurization of the elastic forming element,

- a seat is inserted into the housing with a filter element, a non-return valve, to seat the non-return valve when creating a vacuum,

- a plug is inserted into the housing with a filter element, a non-return valve, a seat, to prevent the non-return valve from falling out of the housing,

- A vacuum pump with a gearbox was introduced to create the primary and secondary vacuum.

The method of using the device for obtaining dental impressions using a spoon of impression and impression material, characterized in that

- introduce as an impression material an elastic forming element filled with a loose molding material with vacuum hardening,

- in the process of obtaining casts of teeth, the correction of the outer and inner surfaces of the casts on the elastic forming element,

- to obtain occlusal surfaces, an impression of the upper and lower jaw is obtained simultaneously,

- correction of dental impressions is performed when creating a primary vacuum in an elastic forming element,

- to obtain the final impression create a secondary vacuum,

- to obtain a second impression of the teeth, a vacuum is removed by moving the check valve from the seat of the body,

- to obtain casts of teeth from the upper or lower jaw, the housing assembly with a filter element and a part of the neck of the elastic forming element are placed in the hole made in the front of the impression spoon.

In the drawings:

Figure 1 is a General view of an elastic forming element, where

1 - elastic forming element,

2 - neck,

3 - O-ring seal

6 - bulk material

7 - case,

8 - annular groove of the housing,

9 - saddle

10 - plug

11 - filter element

12 - check valve

13 - a vacuum hose,

14 - vacuum pump with gear.

Figure 2 - General view of the spoon impression, where

4 - impression spoon

5 - hole.

Figure 3

1 - elastic forming element,

2 - neck,

3 - O-ring seal

4 - impression spoon

5 - hole

6 - bulk material

7 - case,

8 - annular groove of the housing,

9 - saddle

10 - plug

11 - filter element

12 - check valve

13 - a vacuum hose,

14 - vacuum pump with gear.

The essence of the proposed technical solution is as follows. The elastic forming element 1 is made of a horseshoe-shaped form from a plastic material, for example, latex with a shore hardness of A 45-55. Bulk material 6 is placed inside it, for example, talc, which under the influence of vacuum becomes plastic, which allows shape correction. A body 7 with a seat 9, with a filter element 11 and a check valve 12 is inserted inside the neck of the elastic forming element 1. An annular seal 3 is made on the neck 2 of the elastic forming element 1.

The housing 7 is made with an annular groove 8. The seat 9 is made of an elastic material, such as latex.

The vacuum hose 13 is connected to the neck 2 of the elastic forming element 1 Assembly with the housing 7.

To create a vacuum, use a vacuum pump with a reducer 14. When taking impressions only from the upper or lower jaw, a impression spoon 3 is used, on which an elastic forming element 1 with a housing 7, with a seat 9, with a filter element 11 and a check valve 12 is placed.

The device operates as follows. In the elastic forming element of the horseshoe-shaped form 1, the bulk material 6 is poured through the neck 2 and the O-ring 3. In order to prevent the loose material 6 from sucking and sucking the bulk material 6 into the neck 2 of the elastic forming element 1, the complete assembly is inserted, including: directly the housing 7 with the annular groove 8, filter element 11, non-return valve 12, seat 9 and plug 10. The seat 9 is tightly fixed in the housing 7, the inner hole of the seat 9 is made in the form of a funnel with rounded walls. An O-ring 3 of the neck 2 of the elastic forming element 1 enters the annular groove 8 of the housing 7 and provides sealing of the elastic forming element 1. A vacuum hose 13 is put on the assembly and the neck 2 of the elastic forming element 1 is further crimped. On the other side of the vacuum hose 13, a vacuum a pump with gear 14 with the possibility of creating a controlled vacuum depth. After creating a preliminary vacuum with a depth of 0.08-0.05 MPa using a vacuum pump with gear 14, the non-return valve 12 sits on the seat 9 due to the difference in atmospheric pressure and vacuum in the elastic forming element 1 and prevents leakage of the elastic forming element 1. Thus prepared elastic the forming element 1 is removed from the vacuum hose 13 and inserted into the oral cavity of the patient. Bulk material 6 at a pressure of 0.08-0.05 MPa acquires a viscous flow state, so that when a patient closes the jaw, molding granular material is squeezed out of the contact zone 6. The elastic forming element 1 precisely follows the contours of the parts of the oral cavity.

If it is necessary to correct the impression, the doctor adjusts, deforming and building up the bulk material 6 together with the elastic forming element with the fingers in the right places of the upper and lower jaws.

After that, without removing the impression from the patient's mouth, put the vacuum hose 13 on the neck 2 of the elastic forming element 1 assembly and create a vacuum with a depth of 0.04-0.02 MPa using a vacuum pump with gear 14. Check valve 12, as before , sits on the saddle 9 in the housing 7. After that, the vacuum hose 13 is removed from the neck 2 of the elastic forming element 1 assembly.

The impression obtained on the elastic forming element 1 is removed from one, then from the other jaw.

The cast is ready for the next process cycle.

If it is necessary to re-take the impression, the vacuum obtained is removed by removing the check valve 12 from the seat 9 of the housing 7 and the process of taking the impression is repeated.

If it is necessary to take an impression only from the upper or lower jaw, an impression spoon 4 with a hole 5 is used as an anti-stop. When working on the left, right sides or front teeth of the oral cavity, an elastic horseshoe-shaped forming element 1 is also used. In this case, if it is necessary to correct the impression, the bulk material 6 is also deformed and built up together with the elastic forming element 1 with the fingers in the right places on the left, right sides, or the top and bottom of the front teeth of the oral cavity.

The developed device for producing dental impressions and the method of its use will replace expensive impression materials, ensure accurate obtaining of an impression of the oral cavity with all its parts and details, eliminate the problems of the “gag reflex” in elderly people and children, and ensure the speed and accuracy of casting impressions in the manufacture of mouth guards for athletes , as well as the cost of manufacturing prosthetic teeth for various defects of parts of the oral cavity. A doctor can predict a successful cast and can control the process using his skills and knowledge.

The developed device is industrially applicable and does not present difficulties for the current level of production of products from elastic polymer materials, and the method of its use allows to increase the level of service in dentistry.

Claims (5)

1. A device for producing dental impressions containing impression material, characterized in that it further comprises a vacuum pump with a reducer and a vacuum hose, and as an impression material, an horseshoe-shaped elastic forming element filled with bulk material - talcum powder, including a neck and an annular seal and threaded housing assembly, including the housing itself with an annular groove, a filter element, a non-return valve to prevent depressurization, a seat for seating when creating a vacuum valve, the internal opening of which is made in the form of a funnel with rounded walls and a plug to prevent the check valve from falling out of the body, while the annular seal of the neck of the elastic forming element enters the groove of the body, a vacuum hose is connected to the body, connected to a vacuum pump with gearbox. 2. The method of using the device according to claim 1 is that in the process of obtaining casts of teeth create a primary vacuum in the elastic forming element, make corrections to the outer and inner surfaces of the casts, and to obtain the final impression create a secondary vacuum. 3. The method according to claim 2, characterized in that to obtain occlusal surfaces, an impression of the upper and lower jaw is obtained simultaneously. 4. The method according to claim 2, characterized in that in order to obtain a second impression of the teeth, a vacuum is removed by moving the check valve from the saddle of the housing. 5. The method according to claim 2, characterized in that to obtain the casts of the teeth from the upper or lower jaw, use the impression spoon, in the front of which a hole is made to place the housing assembly with the filter element and the neck portion of the elastic forming element.

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