RU2807881C1 - Method of creating an individual tray on the upper jaw - Google Patents

Abstract

FIELD: medicine; orthopedic dentistry.

SUBSTANCE: invention can be used in prosthetics in the absence of teeth in the upper jaw. The undercuts on the cast plaster model are first covered with wax. Clasp wax is placed on the tubercles of the upper jaw, in the torus area and on the palatal folds. Next, the entire model is covered, up to the transitional fold, along the palate with base wax, 2–3 mm thick. Then the entire model is covered with Megatray light-polymer plastic, while the edges along the transition fold are shortened by 3–5 mm in order to apply BisicaFunctional edging material to form a teardrop-shaped edge. Then part of the plastic in the area of the tubercles is removed, while leaving the plastic in the area of line A untouched. A handle is made. The formed individual tray is polymerized with an ultraviolet lamp for 10–15 minutes.

EFFECT: method, by eliminating lateral compression on prosthetic beds in the gum area, makes it possible to improve the quality of manufactured prostheses based on an individual tray.

2 cl, 1 dwg, 3 ex

Description

Application area

The invention relates to medicine, in particular to orthopedic dentistry, and can be used in prosthetics in the absence of teeth in the upper jaw.

State of the art

There is a known method for making an individual tray in which, after casting a plaster anatomical model, the undercuts are covered with clasp wax and an individual tray is made of light-polymer plastic on top of the anatomical plaster impression. Accepted as a prototype.

The disadvantage is the presence of lateral compression on the prosthetic beds in the gum area of the upper jaw, which contributes to discomfort, as well as atrophy of the lateral part of the upper jaw. Subsequently, we receive patients with a reverse bite in whom the upper jaw with secondary edentia is narrow and the lower jaw is wide.

Disclosure of the invention

The objective of the claimed technical solution is to improve the quality of manufactured prostheses based on an individual tray.

The technical result consists in eliminating lateral compression on the prosthetic beds in the gum area.

The stated technical result is achieved through the use of the following set of essential features, namely, the method of creating an individual tray of the upper jaw consists in the fact that the undercuts are previously covered with wax on a cast plaster anatomical model, and clasp wax is installed on the cusps of the upper jaw, in the torus area and on the palatal folds , then the entire model is covered with base wax, 2-3 mm thick, up to the transitional fold along the palate, then the entire model is covered with light-polymer plastic, shortening it along the transitional fold by 3-5 mm, then some of the plastic is removed in the area of the tubercles, and in the area of line A The light-polymer plastic is not touched. In a particular case of the method, Megatray polymer is used as a light-polymer plastic.

Brief description of drawings

In FIG. A cross-section of the patient's jaw is presented along with a custom tray.

Carrying out the invention

All known methods for making individual trays 1 boil down to the fact that after an alginate impression it is necessary to cast an anatomical plaster model, cover the undercuts with wax and cover the tray with light-polymer plastic. Then, after hardening, make 3 stop stops 2 on the palatal surface of the spoon, and it will rise in the mouth above the prosthetic bed, and will also provide a uniform space, a cavity for the corrective mass. But these known methods practically do not ensure the creation of the lateral cavities of the 3 gums, where a thin, insufficiently thick layer of corrective mass will subsequently be applied. As a result, the finished prosthesis, made on the basis of an individual tray, will exert pressure in the lateral areas of the gums of the prosthetic bed and cause atrophy of the D3 bone in the lateral region on the front side of the upper jaw.

The claimed invention is aimed at creating additional lateral cavities in the prosthetic bed during the manufacture of an individual tray.

When making an individual tray for the 1st upper jaw, the undercuts are previously covered with base wax on a cast plaster model, and clasp wax is installed on the tubercles of the upper jaw, in the torus area and on the palatal folds, since these places are responsible for fixing the finished prosthesis. Next, the entire model is covered up to the transitional fold along the palate with base wax, 2-3 mm thick, then the entire model is covered with light-polymer plastic, shortening it along the transitional fold by 3-5 mm to apply the BisicaFunctional edging material, which helps soften the sharp edges of the individual tray and the formation of a drop-shaped edge on the future prosthesis. Then part of the light-polymer plastic in the area of the tubercles is removed so that during the taking of the impression the cords that pass behind the maxillary tuberosities are illuminated. Next, a handle is made for convenient positioning of the individual spoon in the oral cavity. Then an individual spoon made of light-polymer plastic on a plaster model is polymerized under an ultraviolet lamp for 10-15 minutes.

Example implementation.

Example 1. A 65-year-old man came to the orthopedic dentistry clinic with complaints and discomfort when fixing the upper dentures at rest. During the survey, it was revealed that the complete removable plate denture on the upper jaw was made without an individual tray. After several months of wearing the prosthesis, the man began to experience discomfort and pressure from the prosthesis in the lateral parts of the upper jaw. It was decided to remake this prosthesis according to the stated technology using an individual spoon. When making an individual tray for the upper jaw, the undercuts are first covered with base wax on a cast plaster model, and clasp wax is installed on the cusps of the upper jaw, in the torus area and on the palatal folds, since these places are responsible for fixing the finished prosthesis. Next, the entire model is covered up to the transitional fold along the palate with base wax, 2-3 mm thick, then the entire model is covered with light-polymer plastic, shortening it along the transitional fold by 3-5 mm to apply the BisicaFunctional edging material, which helps soften the sharp edges of the individual spoon and creating a teardrop-shaped edge on the future prosthesis, then part of the plastic is removed in the area of the tubercles so that during the taking of the impression the cords that pass behind the maxillary tuberosities can be seen. Next, a handle is made for convenient positioning of the individual spoon in the oral cavity. Then an individual spoon made of light-polymer plastic on a plaster model is polymerized under an ultraviolet lamp. The doctor, using a custom tray, took a working impression on the upper jaw and transferred it to the dental laboratory for the manufacture of a complete removable plate denture on the upper jaw.

Example 2. A 70-year-old man came to the orthopedic dentistry clinic for correction of an upper jaw prosthesis, and upon examination significant atrophy of the upper jaw in the lateral region was revealed. When taking an alginate impression from the upper and lower jaws and casting diagnostic plaster models, it was noticed that the upper jaw is significantly narrower than the lower jaw in the lateral regions. It was decided to remake the prosthesis using this technique to worsen the atrophy in the upper jaw in the lateral region.

Example 3. A 70-year-old man came to the orthopedic dentistry clinic. When examining the patient's oral cavity, 2 teeth 2.2,4.2 with 1st degree mobility were preserved in the upper jaw. It was decided to remove the remaining 2 teeth to preserve aesthetics and create a closing valve of the prosthesis on the upper jaw, make a temporary immediate prosthesis, and then a new complete removable plate prosthesis on the upper jaw using this method using an individual tray without compression in the lateral areas of the upper jaw.

Claims (2)

1. A method for creating an individual tray of the upper jaw, which consists in covering the undercuts with wax on a cast plaster model, installing clasp wax on the cusps of the upper jaw, in the torus area and on the palatal folds, then the entire model is fitted, up to the transitional fold, along the palate base wax, 2-3 mm thick, then the entire model is covered with light-polymer plastic, while the edges along the transitional fold are shortened by 3-5 mm, to apply the BisicaFunctional edging material to form a teardrop-shaped edge, then part of the plastic is removed in the area of the tubercles, leaving while the plastic in the area of line A is left untouched, a handle is made, the formed individual spoon is polymerized with an ultraviolet lamp for 10-15 minutes. 2. The method according to claim 1, characterized in that Megatray polymer is used as a light-polymer plastic.