RU2423955C1 - Method of obtaining functional impression after upper jaw resection - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, in particular to dentistry, and is intended for manufacturing prosthesis-obturator in all types of jaw resection. Anatomical impression is obtained with alginate mass by means of standard tray, which is used to make plaster model. Obturator is modelled on it by covering positive representation of palate defect with wax with simultaneous modelling of resected alveolar crest. Obtained composition is installed in oral cavity and fit by filling possible clearances with wax. Impression, used for creation of individual tray is obtained. Obtained tray is adapted in oral cavity, using known functional tests. Retention metal staples are installed into wax obturator fixed in jaw defect. Correcting layer of silicon impression mass is applied on obtained composition, after which impression by earlier made individual tray with introduced into it base layer of impression mass is obtained.

EFFECT: method makes it possible to obtain functional impression from upper jaw for manufacturing prosthesis-obturator, in case if size of entrance hole into defect is smaller than diameter of defect itself.

Description

The invention relates to medicine, in particular to dentistry, and can be used for the manufacture of an obturator prosthesis for all types of jaw resection.

A known technique for obtaining a functional impression from the upper jaw after resection, when the impression is obtained with a standard spoon, which is pre-corrected using a thermoplastic mass. For this, a thermoplastic mass is placed on a standard spoon, on top of it are two gauze napkins moistened in an isotonic sodium chloride solution. A spoon is introduced into the mouth and pressed all the way to the jaw. Using active and passive movements, they form the edge of the impression along the boundary of the transition fold and in the region of the defect. The spoon is removed until the final solidification of the mass. After removing the impression, excess mass is removed and the outer gauze napkin is removed. An elastic silicone impression mass is applied to the surface of the preliminary impression coated with an inner layer of gauze. A spoon is introduced into the mouth and pressed to the jaw. After the elastic mass has hardened, the print is removed. The model is cast on such a double print. On the model, plaster or lead foil cover the places to be isolated, as well as the remaining teeth. If the model has a complex relief of the defect, then using the parallelometer fill in the place of undercuts. An individual spoon is prepared according to the usual method. It is tested in the oral cavity. Occlusal thermomass rollers are glued onto a spoon. The central ratio of the jaws is determined. The functional impression is removed under pressure from the occlusal rollers. After receiving the functional impression, the model of the upper jaw is cast. The fixing part of the prosthesis is made, which can be in the form of a molded or plastic base with clasps (A. S. Scherbakov, E. I. Gavrilov, V. N. Trezubov, E. N. Zhulev. “Orthopedic dentistry”. P. 526) .

The disadvantage of this technique is that it is impossible to produce an impression of a defect in the jaw with an individual spoon if the size of the inlet to the defect is less than the diameter of the defect itself.

The objective of the present invention is to obtain a functional impression of a defect in the upper jaw during its resection.

The technical result is to obtain a functional impression from the upper jaw during its resection for the manufacture of an obturator prosthesis, if the size of the inlet to the defect is less than the diameter of the defect itself.

The technical result is achieved by the fact that the method of obtaining a functional impression after resection of the upper jaw is as follows: an anatomical impression is obtained with an alginate mass using a standard spoon, using which a gypsum model is made and an obturator is modeled on it by waxing with a positive imprint of the sky defect with wax and simultaneous modeling of the resected alveolar crest. The resulting composition is installed 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 according to standard technology. The resulting spoon is adapted in the oral cavity using known functional tests. Next, retention metal staples are installed in the wax obturator fixed in the jaw defect and 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 method is as follows.

1. Get an anatomical impression with an alginate mass with a standard spoon.

2. Based on the print made gypsum model.

3. On the resulting model, a wax obturator is modeled by lining a positive display of a sky defect with wax and simulating resected sections of the sky and alveolar ridge at the same time.

4. The resulting composition is installed in the oral cavity and fit by filling up possible gaps with wax.

5. Get an impression on which to make an individual spoon according to standard technology.

6. The resulting spoon is adapted in the oral cavity using known functional tests.

7. In the wax obturator, fixed in the defect of the jaw, set retention metal staples.

8. On the resulting composition is applied a corrective layer of silicone impression mass.

9. An impression is made of a previously made individual spoon with the base layer of the impression mass introduced into it.

Claims (1)

A method of obtaining a functional impression after resection of the upper jaw, carried out as follows: an anatomical impression is obtained with an alginate mass using a standard spoon, using which a gypsum model is made and an obturator is modeled on it by waxing with a positive imprint of the sky defect with wax and simulated resected alveolar ridge, the resulting composition is set in the oral cavity and fit by filling up possible gaps with wax, get an impression on which made an individual spoon is prepared according to standard technology, the resulting spoon is adapted in the oral cavity using known functional tests, then retention metal staples are placed in the wax obturator fixed in the defect of the jaw and 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 the base layer of the impression mass introduced into it.