RU2708828C1 - Method for manufacturing of overlapping, frame dental prostheses and dental implants - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to orthopedic dentistry, and is intended for use in making overlapping, frame prostheses resting on cast stump pins, dental implants with lock fixtures, telescopic fixation. Impression is obtained by double-layer two-stage or single-stage method. Analogue of the locking attachment is made on the impression by means of ash-free plastic. Retention points are formed on the obtained analogue of the pin stump insert for reliable fixation of the analogue of the lock attachment in the gypsum model, applying longitudinal and transverse furrows. Working model is made by filling impression with preset analogue of locking attachment, super-gypsum, by means of vibration table. After crystallization of gypsum, the impression material is notched and separated from the model fragmentarily. Bases of the basis of the prosthesis are applied. Bite beads are used to define and fix the height of the lower one-third of the face and the central ratio of the jaws. Size, shape and color of artificial teeth are determined. Prostheses introduction pathway is determined. On the analogue, the mating part mating part is made, the telescopic fixation system is simulated and placed in the metal bunker. Thermoplastic mass of the base of the overlapping prosthesis is connected to the metal hopper and the frame by means of retention points. Prosthesis is modeled, teeth are staged and wax is replaced by plastic. Elastic washers are fitted in lock fixtures. In the clinic, the ready prosthesis is fitted and fixed in an oral cavity of the patient.

EFFECT: method enables eliminating the complication of the technical stage of making the prosthesis in the form of deformations of the lock elements on the gypsum model, improving the fixation of the mating part of the latching, as well as improving the quality of prosthesis manufacturing, excluding the stage of clinical relocation of the prosthesis for the installation of elements of a locking, telescopic attachment into the base.

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Description

The invention relates to medicine, namely to orthopedic dentistry and is aimed at improving the manufacturing process of overlapping, frame prostheses, which allows to improve their quality, fixation and stabilization.

Overlapping, frame prostheses have the following advantages: they allow to suspend atrophy of the alveolar ridge, improve fixation of the denture with severe atrophy of the alveolar ridges, especially when used on the lower jaw, increase functional efficiency by transferring pressure to supporting teeth and better stability and retention reduce the pressure on the mucous membrane, reduce the boundaries of the basis of the prosthesis, reduce the period of adaptation of patients to prostheses, and also allow to achieve aesthetic result due to fixation elements invisible during use of the prosthesis (Gavrilov V., Kopelyan E., Shubladze G., Gaidash D., Kosenko Y., Romankov I. Technique of surgical treatment of perforated maxillary sinusitis // - 2012. - T . 7, No. 3. - C. 130-137).

The traditional method of manufacturing overlapping, frame prostheses is as follows: an impression of an alginate impression mass is removed from the cast stump pin tabs fixed in the root canals with locking fixation elements, a working model is made, a wax basis with bite rollers is modeled, in the wax basis in accordance with the location of the lock fasteners recesses are created to a depth exceeding the height of the locks. An overlying prosthesis is made according to generally accepted technology. At the clinic, the dentist performs a clinical relocation. The prepared bed under the matrix part of the lock fastener is filled with quick-hardening plastic and the prosthesis is fixed in the patient's oral cavity. After polymerization of plastic, the prosthesis is removed from the oral cavity and corrected (Dembitsky A.V. Design features of the covering prosthesis during orthopedic treatment of dentition defects with single-standing teeth and roots // Ukrainian Dental Almanac. - 2010. - No. 3. - C. 53-55).

This method has several disadvantages:

- models are made of gypsum - a brittle material, and the elements of the lock fasteners are not saved when the impression and model are separated, which reduces the quality of orthopedic structures;

- the alginate impression mass used to produce the prints has a significant degree of shrinkage, and also does not accurately reflect the prosthetic bed;

- the stage of clinical relocation reduces the quality of the manufactured prosthesis, which makes it difficult to fit and fix the prosthesis in the patient's oral cavity;

- the response elements of the locks do not provide sufficient retention in the thermoplastic mass of the basis of the prosthesis;

- multiple fittings and corrections worsen the fixation and stabilization of the prosthesis in the oral cavity, therefore, the patient’s adaptation to the prosthesis is slowed down.

If tooth roots are present in the patient’s oral cavity, there are no indications for their removal, and according to the results of clinical examination, they are suitable for using supports of an orthopedic design, the proposed method of manufacturing overlapping, frame prostheses should be used.

The technical result of the invention, a method of manufacturing overlapping, frame prostheses, is aimed at improving the manufacturing process of overlapping, frame prostheses based on molten stump pin tabs, implants with spherical locks, telescopic fixation system. At the same time, the complication of the technical stage of the manufacture of the prosthesis in the form of deformation of the locking elements on the plaster model is leveled, the fixing of the counterpart of the locking fastening is improved due to the use of a hopper in the base, which allows the attachment to be installed in the prosthesis, the telescopic fixing system, not exceeding the dimensions of the base of the overlapping prosthesis and providing reliable mechanical fixation in the basis of the lock fastening; the quality of manufacturing prostheses improves, excluding the stage of clinical relocation of prostheses for installation in the basis of elements of castle, telescopic fastening.

A method of manufacturing overlapping, frame prostheses based on teeth and dental implants, characterized in that in the manufacture of overlapping, frame prostheses based on molded stump pin tabs, dental implants with locking fasteners, telescopic fixation, an impression is made, an analog of the fastening is made by filling imprint with ashless plastic, in the analog form retention points for fixing in the model, make a model of super gypsum, simulate the response h on the analog The parts of the lock fastening, telescopic fixation, place them in a metal hopper, while the shape and dimensions of the hopper frame do not exceed the dimensions of the basis of the overlapping prosthesis, and have retention points on their outer surface; artificial teeth are staged, wax is replaced with plastic, thermoplastic mass, bushings are installed in the prosthesis.

A method of manufacturing an overlapping, frame prostheses based on teeth and dental implants, as follows. In the manufacture of overlapping, frame prostheses based on cast stump pin tabs, dental implants, the impression is obtained by a two-layer two-stage or one-stage method using silicone or polyester impression materials. An analogue of the lock fastening is made using an imprint using ashless plastic (for example, GC PatternResine LS). Retention points are formed on the obtained analogue of the pin stump tab for reliable fixation of the analogue of the lock fastening in the plaster model, applying longitudinal and transverse grooves. A working model is made by filling in an impression with an analogue of the lock fastening pre-installed in it, super gypsum (for example, GC FujiRock), using a vibration table. After gypsum crystallizes, the impression material is incised and fragmented from the model to avoid displacement and damage to structural elements.

The borders of the prosthesis base are applied. Bite rollers are modeled, with the help of which the height of the lower third of the face and the central ratio of the jaws are determined and fixed in the clinic. The size, shape and color of the artificial teeth are determined. The route of insertion of the prosthesis is determined using the analytical rod of a milling-parallelometric device. The analogue is used to simulate the counterpart of the lock fastening, telescopic fixation system, place them in a metal bunker, which, due to retention points on its surface, provides reliable fixation in the basis of the prosthesis from thermoplastic mass. The thermoplastic mass of the base of the overlapping prosthesis is connected to a metal hopper, frame by means of retention points. The shape and dimensions of the hopper allow you to place a locking and telescopic locking system in it without exceeding the dimensions of the basis of the overlapping prosthesis. The prosthesis is modeled, teeth are staged and wax replaced with plastic. Install elastic gaskets in the lock fasteners. In the clinic, the finished prosthesis is fitted and fixed in the patient's oral cavity.

The proposed method for manufacturing overlapping, frame prostheses based on teeth and dental implants was used for orthopedic treatment of 17 patients. The results are good.

Claims (1)

A method of manufacturing overlapping, frame prostheses based on teeth and dental implants, characterized in that in the manufacture of overlapping, frame prostheses based on molded stump pin tabs, dental implants with locking attachments, telescopic fixation, an impression is made, an analog of the attachment is made by filling imprint with ashless plastic, in the analog form retention points for fixing in the model, make a model of super gypsum, simulate the response h on the analog The parts of the lock fastening, telescopic fixation, place them in a metal hopper, while the shape and dimensions of the hopper frame do not exceed the dimensions of the basis of the overlapping prosthesis and have retention points on their outer surface; artificial teeth are staged, wax is replaced with plastic, thermoplastic mass, bushings are installed in the prosthesis.