RU2280421C2 - Method for manufacturing temporary fixed partial dentures - Google Patents

Abstract

FIELD: medicine, orthopedic stomatology.

SUBSTANCE: the innovation deals with making a cast from a dental row, casting diagnostic model, preparing teeth, casting with quickly hardening plastic, applying a cast upon dental row followed by treating and fixing a denture. After casting diagnostic models, one should manufacture occlusion rollers upon models to fit them in oral cavity in position of central occlusion, then comes plastering of diagnostic models into articulator in constructive occlusion. Then one should cut teeth on diagnostic models taking into consideration the height of occlusion rollers and model a wax construction of a denture. One should prepare a patient's supporting teeth, make an imprint from diagnostic model to fill it with plastic of cold polymerization and apply upon a dental row. Then it is necessary to treat and fix a temporary fixed partial denture in oral cavity.

EFFECT: higher efficiency.

4 dwg

Description

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

A known method of manufacturing temporary crowns by removing the impression filled with quick-hardening plastic according to a previously prepared plaster model. [one].

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, i.e., the low effectiveness of orthopedic treatment.

There is also a method of manufacturing temporary crowns by applying an impression taken before the preparation of the teeth, and applying it with quick-hardening inert plastic to the prepared teeth [2].

The disadvantage of this method is the inability to ensure the fixation of the reconstructed position of the lower jaw at the stage of manufacturing temporary structures and, as a result, the accuracy of manufacturing permanent structures, which reduces the effectiveness of orthopedic treatment.

The aim of the invention is to increase the effectiveness of orthopedic treatment using temporary fixed prostheses.

This goal is achieved by the fact that after casting the gypsum model, gypsum teeth are cut from the model, the model of the future temporary fixed prosthesis is made of wax on the model, the mold is taken from the model, the mold is filled with quick-hardening plastic, the impression is placed on the dentition, the denture is processed and fixed.

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

The method is illustrated in graphic material. Figure 1 shows the adjustment of the articulator to an individual function, figure 2 shows a simulated design of a future temporary prosthesis, figure 3 shows an impression taken from a diagnostic model, figure 4 shows a prepared impression previously taken from a diagnostic model filled with plastic cold polymerization.

The method is implemented as follows. Patients on diagnostic models make bite rollers with an overestimation of the height of the bite from 3 to 10 millimeters (according to indications for generalized pathological abrasion) or without overestimation of the bite with the height of the lower third of the face preserved. Cushions fit in the oral cavity, fixed in the position of central occlusion. A tomography of the temporomandibular joint is performed before, during and after treatment, and the absence of disturbances in the relationship of the elements of the joint is noted.

Gypsum of diagnostic models in the articulator is carried out in a constructive bite using a facial arch. The articulator is adjusted to an individual function (Fig. 1). Focusing on the height of the bite ridges, the dental technician on diagnostic models cuts teeth and models the design of the future temporary prosthesis from wax, which is previously agreed with the doctor and patient (Fig. 2). An impression is taken from the prepared diagnostic model (Fig. 3). After that, the doctor prepares the abutment teeth.

The prepared impression, previously taken from the diagnostic model, is filled with cold polymerization plastic (Fig. 4). Then the impression with the plastic is placed on the dentition. In this way a temporary bridge is made of quick-hardening plastic. After treatment, the prosthesis is temporarily fixed in the oral cavity.

In order to transfer the articulation relationship of the dentition from a temporary prosthesis to a permanent one, the dental technician gypsum into the model articulator: the upper diagnostic one with modeled teeth, the lower working one with prepared teeth. After making a permanent denture on the lower jaw, the technician plaster the models: the lower one with permanent lower dentures, and the upper one with prepared teeth. Then he makes a permanent denture on the upper jaw in accordance with the lower.

For prosthetics in the clinic of orthopedic dentistry, 18 patients between the ages of 30 and 65 were accepted.

When analyzing the tomography of the temporomandibular joint with bite ridges, there were no violations in the relationship of the elements of the joint.

The proposed method allows you to:

1. To ensure high-quality fixation of the reconstructed position of the lower jaw at the stage of manufacturing temporary structures;

2. Restore missing and supporting teeth immediately after preparation, restoring the occlusal height;

3. To restore the aesthetics and functional value of the dentition;

4. Prevent the development of secondary deformations.

In addition, the use of temporary prostheses made of quick-hardening plastic protects teeth with live pulp from external influences, allows you to draw a gingival margin and get impressions without laying retraction or with little use of them.

Information sources

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

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

Claims (1)

A method of manufacturing temporary fixed prostheses by taking an impression from the dentition, casting a diagnostic model, taking an impression from the model, preparing the teeth, filling the impression with quick-hardening plastic, applying the impression to the dentition, processing and fixing the prosthesis, characterized in that bites are made after diagnostic models rollers on the models and fit them in the oral cavity in the position of central occlusion, gypsum the diagnostic models into the articulator in a constructive bite, cut the tooth on the diagnostic models for height and the biting edges of the wax prosthesis modeled structure dissected supporting the patient's teeth, remove the impression from the diagnostic model, it is filled with plastic cold polymerization is applied to the dentition, treated and fixed temporary fixed prosthesis to the oral cavity.

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