RU2355354C2 - Method for making of false prostheses - Google Patents

Abstract

FIELD: medicine; dentistry.

SUBSTANCE: method for making false prostheses by impressing prior to odontopreparation and plaster casting consists that anatomic dental form is modelled in wax with modelling an intermediate prosthesis. Odontopreparation is followed with impressing of the prepared model, and made impression filled with quick-hardening plastic, is placed on prepared teeth with false prosthesis processed and fixed in oral cavity.

EFFECT: reduced time for making false prosthesis with ensured cosmetic effect.

4 dwg

Description

The invention relates to medicine, namely to orthopedic dentistry, and is intended for the manufacture of temporary plastic prostheses.

A known method of manufacturing temporary crowns by applying a cast taken before the preparation of the teeth, and applying it with quick-hardening inert plastic to the prepared teeth [1].

The disadvantages of the method are the duplication of the initial condition of the teeth; the intermediate part of the bridge is not made; low cosmetic prosthesis.

There is also a known method of manufacturing temporary crowns by taking an impression filled with quick-hardening plastic according to a previously prepared plaster model [2].

The disadvantages of this method are the technique does not allow to replace missing teeth at the stage of manufacturing temporary structures; it is not possible to quickly restore the full anatomical shape of the dentition to prevent secondary deformations; manufacturing time; does not allow to achieve sufficient cosmeticity of the prosthesis.

The aim of the invention is to reduce the manufacturing time of a temporary prosthesis and to achieve sufficient cosmeticity of the prosthesis.

This goal is achieved by the fact that after the impression is taken, the model is molded, the anatomical shape of the abutment teeth is restored with wax and the intermediate part of the prosthesis is modeled, after odontodiagnosis, the impression is taken from the prepared model and the resulting impression filled with quick-hardening plastic is applied to the prepared teeth, processed and fixed temporary oral prosthesis.

Comparison of the proposed method with other known methods shows its compliance with the criteria of the invention.

The method is illustrated in graphic material. Figure 1 shows a gypsum model with teeth modeled from wax, figure 2 shows the removal of the impression from the prepared model, figure 3 shows the resulting impression filled with quick-hardening plastic, figure 4 shows the finished temporary plastic prosthesis.

The method is implemented as follows.

The doctor before odontopreparation removes the impression from the jaw with silicone or alginate material. The model is cast, on the model the dental technician waxes to restore the anatomical shape of the abutment teeth and models the intermediate part of the prosthesis, that is, a duplicate of the future bridge is created (Fig. 1), and at the same time the doctor odontopreparates the abutment teeth. With the prepared dental technician wax composition of the denture, the doctor takes the impression (figure 2). Quick-hardening plastic is placed in the resulting impression (Fig. 3) and injected into the oral cavity. After polymerization of the plastic, the prosthesis is sanded and polished. Then the doctor fixes the finished temporary plastic prosthesis in the oral cavity (figure 4) using temporary cement.

The proposed method allows you to:

1) make a temporary plastic prosthesis within one hour;

2) allows you to get a full bridge made of plastic that meets the requirements of function and aesthetics;

3) to restore, if necessary, a defect in the dentition, shape and location of the teeth;

4) to prevent the development of secondary deformations;

5) when modeling a temporary prosthesis, make up for aesthetic shortcomings in relation to antagonists;

6) at the same time work as a doctor and dental technician, which significantly reduces the manufacturing time of a temporary prosthesis. In addition, the use of temporary prostheses made of quick-hardening plastic protects teeth with live pulp from external influences.

INFORMATION SOURCES

1. Kalamkarov H.A. Orthopedic treatment using ceramic-metal prostheses. Media Sphere, 1996, 53 p.

2. Zhulev E.N. Fixed prostheses: theory, clinic and laboratory equipment. N. Novgorod, 2000, 365 p.

Claims (1)

A method of manufacturing temporary prostheses by removing the impression before odontopreparation, casting a gypsum model, characterized in that the model restores the anatomical shape of the abutment teeth and simulates the intermediate part of the prosthesis, after odontodiagnosis, the impression is taken from the prepared model and the resulting impression filled with quick-hardening plastic is applied to prepared teeth, process and fix a temporary denture in the oral cavity.

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