A method of making a removable dental prostheses

 

(57) Abstract:

Usage: in prosthetic dentistry for the fabrication of removable dentures. The inventive gypsum model is applied by plasma spraying the metal layer 50 to 400 μm, which then produce a wax base with statement of teeth, sagopafeat model in the cuvette smelted wax pack plastic with subsequent polymerization. The quality improvement is achieved by reinforcing coating on a plaster model, durable connection of the cover with the base plastic. High-tech plasma spraying process ensures high precision and performance. 4 C.p. f-crystals.

The invention relates to medicine, namely prosthetic dentistry, in particular, to methods for producing dentures.

Method of making a removable dental prostheses using metallization basis of known methods (Sarno A. I. 1976, Gaga L. D. 1988. Chemical metallization removable plastic dentures when the prosthetic stomatopathy) (abstract.), Gaudium S. E. 1990, the Use of metallic bases removable laminar dentures in the event NEPA eroplano-palladium coating, the palladium. But these methods are not widely used found due to abrasion, the fragility of the coating (from 2-3 weeks up to 6 months).

The closest analogue is the author. St. N 1666097, class A 61 C 13/06, bull. N 28, 91.

The essence is that the base is stamped foil titanium and on pins attached to the gingival arc. This method requires additional technological devices and includes obtaining mould, casting mould punch and forming of sheet material in the punch pressure elastic medium.

On uformowana the cast of the cast of the fusible metal plug and made a plaster model casting for the last matrix of the fusible metal, and forming the basis carry out preliminary stamping on the matrix sheet together with a rubber plate installed above the diameter and thickness, which is placed between the workpiece and the dome part of the matrix, and the resulting semi-finished product before forming the punch is subjected to softening treatment.

The proposed method for the manufacture of dentures by the method of plasma spraying involves removing the cast from the jaws of istiana, cobalt-chromium alloy, stainless steel, etc. with a thickness of 50 to 400 μm. The coating can be applied fully to all prosthetic bed of plaster models or on a specific area that will continue to meet full or partial coating of the inner surface of the base. Then make a wax base with the production of the teeth and sagopafeat model in the cuvette smelted wax, produce packing basic plastic "Ftoraks" (GOST TU 64-2-120-82), "Ethacryl" (GOST TU 64-2-37-81) or others with further polymerization. The final step is the processing and polishing of denture.

Laboratory stages are conducted in accordance with generally accepted stages in the manufacture teleplasmic dentures.

High-tech plasma spraying process ensures optimal transmission of the smallest elevation of the mucosal surface of the prosthetic bed, which is essential for uniform distribution of chewing pressure.

Example 1. In this way the patient with a full edentulous upper jaw, made a full denture on the upper jaw, the deposited cobalt-chrome alloy with a thickness of 200 μm from the inner surface of the offering to the palate. History of the second plastic "Ftoraks". In the process of adapting to the new prosthesis had to pay attention to polishing in the field of coatings. The average number of correction 3 4.

Example 2. The patient with complete edentulous upper jaw is made removable denture on the upper jaw coated titanium W 1-00 thickness of 70 μm, applied plastic "Ethacryl".

When conducting clinical trials within 6 months in patients with these prostheses discomfort, complaints, inflammatory processes, breakage of the prosthesis was observed.

Example 3. On a plaster model of the upper jaw by the method of plasma spray deposited stainless steel (thickness 350 microns. By the conventional technology made prosthesis, polished. Coating stainless steel in connection with plastic good (phantom model).

For the industrial implementation of the method of manufacture of dentures there is no need to develop new equipment, how to use existing equipment for plasma spraying and dental work. Work is carried out according to standard instructions.

1. A method of manufacturing dentures made of acrylic plastic, including the removal of mould, casting mould madeee coating of metal, make a wax base with statement of teeth, sagopafeat model in the cuvette spend melting out of the wax, the polymerization of plastics and polishing.

2. The method according to p. 1, characterized in that the setting of the teeth is performed after coating.

3. The method according to p. 1, characterized in that the reinforcing protective metal coating using titanium, cobalt-chrome alloy, stainless steel and other metals.

4. The method according to p. 1, characterized in that the metallic coating is applied with a thickness of 50 to 400 microns.

5. The method according to p. 1, characterized in that the reinforcing protective coating is applied either on the part of the prosthetic bed plaster model or fully cover the prosthetic bed.

 

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Metal stamped basis // 2063191

FIELD: orthopedic stomatology.

SUBSTANCE: method of forming elastic silicone substrate on rigid plastic basis consists in that mechanically and chemically treated surface of rigid basis adjusting to prosthetic bed is moistened with monomer being a member of basis plastic composition, dried, and coated with adhesive primer. After 1 min pause, basis is introduced for 3-4 min into microwave field emitted by source with power 450-600 W. After microwave treatment, surface is coated by cold-cured elastomer and substrate layer is then formed in mouth cavity. Adhesive strength of layer is thus increased by more than 1.5-2 times when compared to conventional method.

EFFECT: increased strength of bond between soft substrate and rigid plastic basis, and prolonged service time of denture.

1 tbl, 3 ex

FIELD: medicine.

SUBSTANCE: invention refers to medicine, specifically dentistry, and is applicable for prosthodontic treatment. A rigid base of the dental arch comprises an elongated rigid member cambering after the dental arch. A front site of the elongated member goes into its back site nearby the canine teeth. The back site is flatter and more horizontal at the sites between the first and second molars.

EFFECT: reducing time expenditures for making the prosthetic dentures, improving the quality and the method for making them.

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FIELD: medicine.

SUBSTANCE: after obtaining of anatomical impressions from both jaws of the patient, the stage of central occlusion determination and models plugging into the occludator/articulator, artificial teeth setting is begun, taking into account the anthropometric indices. The wax structure of the prosthesis in the patient's oral cavity is checked. The wax is replaced by thermoplastic according to the manufacturer's instructions. At that, the basis of the removable prosthesis is reinforced, adding up to 1 wt % of nanostructured titanium dioxide in the form of a powder directly to the polyamide granules, evenly mixing it in the thermoplastic mass. The basis is made of polyamide structural material Vertex ThermoSens.

EFFECT: method allows to increase the effectiveness of orthopedic treatment with removable dentures due to improved strength and aesthetic characteristics, absence of residual monomer in the prosthesis basis construction material.

2 ex

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