Metal stamped basis

 

(57) Abstract:

Scope: the invention relates to medicine, namely to prosthetic dentistry. Metal extruded base is a plate of thin sheet titanium cross-section 0,14-0,16 mm, on which the alveolar bone on the outside welded corrugated strip width of 1-2 mm for holding artificial plastic gums and teeth. To prevent deformation of the prosthesis during function basis in the distal reinforced plate triangular form of the same material, pre-stamped on the profile of the posterior hard palate. 1 C.p. f-crystals, 3 ill.

The invention relates to medicine, namely to prosthetic dentistry and can be used to improve the quality of dentures.

Well-known structures and methods of manufacturing metal bases dentures stainless steel section from 0.3 to 0.6 mm, described Kurland, C. Y. (1955), Adriana I. S. (1958), Vasilenko C. S. (1961), Korotkovski (1970), Lipovetsky J. M. (1972), Quilli (1946) (3).

These bases have significant shortcomings, zatrudnienie their introduction in the practice of dental prosthetics, it is inaccurate is it time design and manufacturing methods of metal stamped bases described in many textbooks and manuals prosthodontic techniques (1).

The disadvantage of this construction of the basis and methods of its manufacture is that when forming steel billets of such thickness that when the pressure developed by the pressure deformation (flattening) of small anatomical structures displayed on cast metal model. The result has been a distortion of the relief of the basis and the reduction in the functional values of the prosthesis as a whole. Known base made of sheet chronicleby steel section of 0.35-0.40 mm (2). But clinical and experimental studies of Rubesova I. S. (1976) and Goga L. D. (1988) noted the harmful effects of prostheses from chronicleby steel on the human body. Components steel, interacting with the saliva, to form oxides of metals: chromium, Nickel, iron, deonaraine in the liver, the brain. In addition, the saliva arise microelectromechanical currents that cause the appearance of unpleasant subjective sensations in the mouth. A prototype of the proposed design is the basis of the produced titanium VT1-00, section of 0.35-0.40 mm (4). But titanium sheet blank is of such thickness is stamped on sophisticated technology and shown under adverse conditions in the oral cavity when the prosthesis is TBA bases removable dentures by providing them exact replicas of the microrelief of the mucous prosthetic bed.

This goal is achieved by the fact that for the manufacture of molded bases use VT1-00 mark, the cross-section of 0.14-0.16 mm, and a basis in the distal reinforced by titanium plates are triangular in shape, of a thickness of 0.20 to 0.28 mm

The novelty of this device is that, first, the metal base is stamped from sheet material 2 times thinner than usual, so the dentures are more light and graceful, secondly, to stiffen the distal part of the base is additionally strengthened titanium plate, pre-stamped on the profile of the posterior hard palate.

As a result of analysis when conducting patent research, the applicant has not found technical solutions with evidence of the claimed invention.

The essence of the invention is illustrated in the drawing, which shows: Fig. 1: General view of the prosthesis of Fig. 2 basis, triangular top plate for added strength metal base; Fig. 3 polyurethane matrix for stamping basis.

As stamped metal base 1 made of titanium grade BT1-00 section 0,14-0,16 mm is more susceptible to deformation in the distal he fortified t is the Plate 2 is welded to the base 1 pulse welding.

The base is manufactured as follows: a planar titanium billet this thickness, which is quite plastic, stamp on the model of the low-melting metal (hammer) is a pressure of an elastic medium (polyurethane), enclosed in a closed container, and the shaping is provided by a smaller force of the press.

To prevent bumps, you must not use impact force screw press, and the power hydraulic Jack, is able to develop the necessary pressure gradually and as a matrix to use a block of soft polyurethane brand SKU-PFL in the form close to contritely (Fig. 3).

Using anthropometric study of more than 100 models of the upper jaw we found that for stamping bases are mainly 5 types of matrices with different sizes top and the same basis. Depending on what the matrix size is more suited to the model of the fusible metal, using it and carry out the shaping of the plate. Failure to comply with these two conditions leads to the formation of folds and the need to perform finishing work on their elimination, which may take a lot of time.

For the increase of 0.14-0.16 mm you must obtain a functional replica of a plastic mass with the upper jaw and support with the lower jaw. Cast two models for the cast of the upper jaw and one on the cast of the lower jaw. One model of the upper jaw cast of the fusible metal, the rest of the cast. Models of plaster are used to determine centric relation of the jaws and replace the wax composition on the plastic. On the model of the low-melting metal are titanium stamping of the base 1 and the overlay on top of the triangular plate 2. The pulsed arc welding triangular plate 2 to the outer surface of the titanium base 1 a continuous series of spot welds. Next, carborundum and elastic disks treated with the edge of a plate on the fold, then carefully zapolirovan plate. By "flashing" succeeds so tightly welded to a metal base that after polishing the repair site is hard to see and not feel sick while using the prosthesis. All the smallest anatomical education, stamped on the basis anterior saved. Then along the crest of the alveolar ridge on the metal base weld corrugated strip of SIRENIA metal base sheet of titanium is completed by electropolishing. Further stages of fabrication of the prosthesis are no different from the conventional method of fabricating a denture made of plastic.

The positive effect from the use of bases from a thin sheet of titanium is that it is easy stamping, and provides an exact repetition of complex microrelief surface tissue prosthetic bed, which is essential for uniform distribution of chewing pressure and improve the functional value of dentures. Such thin bases are especially necessary for people of certain professions (artists, lecturers, whose clear and it is a measure of their suitability, as it is proved that the thinner the basis of dentures, especially in the anterior sections of the hard palate, the less it changes it (5). In addition, the preservation of the palatal architecture, individual for each patient, it is important, because in this area the upper jaw is the grinding of food by the tongue tip, which ensures the perception of gustatory and tactile sensations (3). Thus, stamped bases of sheet titanium cross-section 0,14-0,16 mm provide:

the transfer is almost perfect microarchitecture tissue prosthetic bed with snugli;

sufficient strength of the prosthesis;

the improvement in the adhesion and fixation;

minimal disruption of the phonetic features;

biological inertness;

improving the hygienic conditions of the oral cavity in comparison with the bases of other materials (low adhesive capacity for food);

the decrease in mechanical injury to the internal surface of the prosthetic base;

the minimum reduction of the oral cavity;

Readings for the manufacture of molded bases of alloys VT1-00 mark cross-section 0,14-0,16 mm are:

intolerance plastic bases;

violation of biochemical equilibrium oral fluid;

deep bite, complicated by the lowering of interalveolar height is observed;

violation of tactile and phonetic functions;

long-term adaptation to dentures;

the narrowing of the jaws, when the plastic prostheses reduce the already small volume of the oral cavity;

the macroglossia;

peculiarities of the profession (lecturers, artists).

1. Metal stamped the basis of the dental prosthesis, consisting of a metal plate, repeating the microrelief tissue prosthetic bed, and corrugated metal strips, keeping the new material cross-section 0,14-0,16 mm and equipped with a metal plate insert, made of the same material, thickness of 0.28-0.30 mm, having the shape of an acute-angled triangle with concave sides.

2. Metal stamped basis under item 1, characterized in that as the material basis used titanium alloy brand BT1-00.

 

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