(57) Abstract:The invention relates to medicine and can be used in prosthetic dentistry. The technical result is the prevention of erosion of the material of the dental prosthesis and secretions in the mouth of the elements and compounds that cause allergic and toxic reactions. Denture contains plastic base, fitted with artificial teeth. The outer surface of the base made in the form of porous wear condensed in the vacuum of the atomic flux of constituent elements of a film made of bioinert dielectric forming galvanic couples with structural materials, chemically inert towards them and the environment of the oral cavity substances such as oxide of tantalum. The invention relates to medicine, namely to prosthodontics.One of the main problems in prosthetic dentistry is the search for ways of eliminating patients severe allergic and toxic reactions resulting from exposure to substances included in the composition of the acrylic plastic, which are used for dentures. The composition of the monomer, which is used for receiving the sludge acids. In addition, the composition of the basal plastics are various plasticizers, cloud emulsions, dyes and catalysts. Even under ideal adherence polymerization full-linking monomer is achieved. The violation of polymerization leads to a sharp increase in the number of residual, unbound monomer. Due to erosion of the plastic under the action of various reasons (diffusion extraction components, chemical and mechanical effects) of the above substances act in the oral cavity, causing the clinical manifestations of allergic and toxic reactions. To reduce the impact of plastics components on the human body, along with the improvement of structural materials in dentistry searching various types of protective coatings that prevent erosion of the surface of the prosthesis, in particular work on the modification of the surface of the prosthesis.Famous dentures with elevated denetleyicisi properties, representing plastic base are installed on the teeth  , as well as methods of making dentures with protective coatings ,  ,  and  .In the author's evidence  to eliminate allergic react is adding the original mixture of powder metal alloy, used for prosthodontic works, volume 19 to 20%.The main disadvantages of the proposed solution are:
- increase the conductivity of the modified layer and the growth of electrochemical currents in the mouth;
- changes in the mechanical properties of the prosthesis, because it is converted to a design type sandwich structure, which are plastic inner is not modified part, "covered" durable metalized shell.The proposed solution does not exclude the contact of the tissues of the oral cavity by polymethyl methacrylate, methyl methacrylate, erosion which leads to the development of allergic and toxic reactions.In the author's evidence  is proposed to solve the problem of biological indifference prostheses by modification of their surface by chemical means. This is used for processing of the finished products of different solvents for 3-10 min, for example, acetic acid esters. The main disadvantage of this modification is a short-term effect, because the solvents produce simple chemical cleaning of the surface of the prosthesis by leaching of residual unreacted monomer and polymerization initiators. Allergic and toxic reactions remain valid.Excluding contact of mucous prosthetic bed with prosthetic material can fully be realized by using more or less thick, impermeable products for erosion plastic, metal layers or other materials.A known design of prostheses  , in which the insulating strips are applied thin layers of adhesive, Mylar film, plated or pasted gold foil. However, when using such strips are substantially complicated by the operation of the prosthesis, in addition, the use of "massive" pads changes the shape of the prosthesis and the violation of his fixation. The logical way out of this situation is the application of film coatings of small thickness having high adhesion to the material of the prosthesis. However, the first experiments by plating on plastic prostheses showed that in this way arise the principal obstacles to achieving high adhesion and a uniform coating thickness of not more than 1 μm, not violating the shape accuracy and the fixation of the prosthesis. The closest analogue, taken as a prototype, is the construction of the dental prosthesis, the method of metallization which is described in authorswarning in the form of galvanic metal coating of palladium with a thickness of 5-7 microns or silver with a thickness of 20-30 μm, moreover, to increase the adhesion of the coating on the plastic used pre-processing of dentures in solutions of surface-active substances.A common shortcoming of this and other similar structures prostheses containing metallized plastic, is the following. All singleton metals used in dentistry as a coating (gold, platinum, palladium, silver), and conductive alloys and solid solutions, are not biocompatible with the human body. In particular, palladium toxic to living tissues. In addition, the introduction of metal conductors in the oral cavity leads to galvanic couples and, as a consequence, the electric currents flowing under the action of electrochemical differences of potentials, which, in turn, stimulates chemical-toxic, allergic and electrogalvanic reaction. It is also important that getting a solid, porous, postavkoy metal films with a thickness of 1-2 microns, having a high adhesion to the material of the prosthesis, electrochemical methods is of fundamental limitations associated with the mechanism of their growth, and thicker films may reduce the accuracy of the shape of the prosthesis and complicate their fixation.The purpose of the compounds, cause allergic and toxic reactions.This objective is achieved in that the surface of the dental prosthesis is made in the form of a porous, wear-resistant, condensed in the vacuum of the atomic flux of constituent elements of a film made from a biologically inert, dielectric, forming a galvanic couples with structural dental materials, chemically inert towards them and the environment of the oral cavity substances such as oxide of tantalum.After fabrication of the dental prosthesis by known methods and polishing the denture is covered with a film of tantalum oxide thickness of 0.6-0.8 μm in the vacuum processing chamber installation of reactive ion-plasma magnetron sputtering of tantalum.An additional feature of the proposed design of the dental prosthesis is maintaining its high-quality polished surface, as well as in connection with the use of vacuum methods of depositing films of tantalum oxide, there is no need to create a rough surface to increase adhesion of the film to the substrate for subsequent plating (palladium, gold, silver), as proposed, for example, in the author's svidetelyam holding intraoral apipucos allergological tests (using a plastic disk with a diameter of 2 cm), the membranes of the oral cavity and the condition of the capillaries, which assessed the condition of the mucosa before and after the study, established the intolerance of the material of the prosthesis. Next were sampled using the same disks, but having on its surface a film of an oxide of tantalum. Since the result was negative, it is possible to apply the coating to a previously-made denture. During the subsequent operation of the prosthesis patients reported disappearance of the phenomena of burning, dryness, swelling of the mucous membranes of the mouth and lips, improvement of General condition. Objectively observed the disappearance of inflammatory phenomena, microscopic examination normalization of the microcirculatory bed. Cases erosion of the materials of the prosthesis and allocation in the mouth of the elements and compounds that cause allergic and toxic reactions were observed.Sources
1. SU 219099, 30.05.1968.2. SU 470297, 15.05.1975.3. Pathological physiology. /Ed. by A. I. Volozhin, G. C. paradine. M : Medpress, 1998, 480 S.4. SU 254008, 07.10.1969.5. SU 1680142, 30.09.1991. Denture containing plastic base, fitted with artificial teeth, ulvaceae of the atomic flux of constituent elements of the film, made of bioinert dielectric forming galvanic couples with structural materials, chemically inert towards them and the environment of the oral cavity substances such as oxide of tantalum.
SUBSTANCE: method involves using obturating prosthesis having basic and auxiliary surface connected to each other with additional anterior, posterior and two lateral vertically arranged surfaces forming a cavity. The anterior and posterior vertically arranged surfaces have slot-like recesses. Reference notch marks are produced on the auxiliary surface near nose. The alveolar process is manufactured as base and wall. Reference notch marks are produced on the base. Wall has holes for making process lightweight. Teeth are set on the wall.
EFFECT: simplified prosthesis design.
6 cl, 3 dwg
SUBSTANCE: method involves basic and auxiliary horizontally arranged surfaces joined by means of additional frontal, back and two lateral vertically arranged surfaces with a plane being formed. The frontal and back vertically arranged surfaces have recesses as retention grooves. Reference notches are made in the nose area on auxiliary surface. The alveolar process is manufactured base and wall. The base has reference notches. The wall has openings for reducing process weight. Teeth are mounted on the wall. Three openings arranged as triangle which base is turned towards pharynx are produced in auxiliary surface of the obturator prosthesis. Metal containers having matrices pressed into them are introduced into the openings. Three openings arranged as triangle which base is turned towards pharynx are produced on the base bottom. Pedicles (flow gates) having retention notches are mounted in the openings. Each flow gate ends in patrix engageable with corresponding matrix.
EFFECT: simplified and reliable method for fixing alveolar process.
3 cl, 3 dwg
FIELD: medical engineering.
SUBSTANCE: device has partial removable palatine plate prosthesis bearing artificial temporary. The palatine plate has an anterior and two lateral segments connected to each other by means of screw in the anterior palatine fornix region allowing autonomous displacement. Cramp iron members are set on the fangs and on the boundary separating the anterior and lateral segments and on the second temporary molars. Shield for moving upper lip aside is placed in the area of dental arch defect along alveolar process with anterior segment. The shield forms slit between shield surface and gingiva. The shield is stretched to contact point of fang to the first permanent molar. Shield edge is made oval and congruent to transit fold contour.
EFFECT: cosmetically full-valued substitution of upper dental arch defect.
FIELD: medical engineering.
SUBSTANCE: method involves producing maxillary defect imprint, manufacturing its plaster model and modeling wax pattern of obturator prosthesis. The model is compressed with single basis wax layer. Recess is formed on the palatine part corresponding to defect shape. The basis and wax copy of artificial alveolar process is modeled and teeth setting is carried out. Plate is produced from basis wax as a cover closing the recess formed on the palatine part. The cover models the palatine fornix in which a hole of 10-15 mm large diameter is produced. The plate is fixed with wax on defect edges. The so modeled hollow obturator prosthesis is plastered into cuvette composed of two parts - bottom and cover. Model with obturator prosthesis in vertical position is plastered into lower cuvette part. Upper cuvette part is set and filled with liquid gypsum on vibrating table. Gypsum flows inside of obturator through an opening in palatine part. Metal wire loop is introduced into the obturator through an opening in wax plate. Wire diameter is 1.0-1.5 mm as large. The cuvette is hold to achieve full hardening of gypsum. The cuvette is opened after removing wax by applying evaporation method. Obturator model and upper cuvette part are filled with dough-like plastic. Both parts of the cuvette is joined and pressed in vertical direction using bench press. The plastic is polymerized. The prosthesis is removed from the cuvette. Gypsum and reinforcing wire are removed from the cuvette through the palatine part opening. The opening is closed with self-hardening plastic. The prosthesis is filed and polished and fitted in the oral cavity.
EFFECT: improved strength properties; exact correspondence to prosthesis bed.
SUBSTANCE: method involves manufacturing silicon cliché stensil for reproducing morphologic pattern of palatine surface of removable maxillary plate prosthesis base and individual pattern of transverse palatine sulci. The cliché stensil is a fragment of adjusted double anatomical maxilla impression with imprint of individual pattern of transverse palatine sulci. To do it, adjusted double anatomical maxilla imprint is to be produced using imprint silicone mass. After having produced the impression, palatine surface fragment is cut out from it. Wax is heated on oral side at the laboratory stage for manufacturing removable plate prosthesis when modeling removable final wax reproduction of maxillary plate prosthesis base; and the palatine surface is printed by means of earlier produced cliché stensil.
EFFECT: high accuracy in reproducing of individual palatine sulci pattern; full-valued rehabilitation of patients with partially or completely failing teeth.
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; orthopedics.
SUBSTANCE: compound-jam post-resection denture can be used for making compound-jam prosthetic appliances for patients having wide defects of tissues of jam-face area. Denture is made in form of removable construction which has fixing, substituting and hollow sealing parts. Groove is made additionally in denture which groove locates onto top surface of sealing part. There is also channel passing through denture which has input being made inside the groove. Output of channel is disposed between second pre-molar and first pre-molar inside interior to provide muscular retention of denture. Bottom of the groove is made to have inclination to input of channel.
EFFECT: possibility of self-release of liquid stored onto top part of sealing part of denture.
SUBSTANCE: method involves is fulfilled in two stages. Collapsible structure of temporary combined gnathic prosthesis is manufactured at the first stage during the first two months. The prosthesis has two obturating parts having surfaces congruent to defect cavity manufactured from flexible plastic and removable full laminar dental prosthesis having locking thrusting member manufactured by means of transfer molding. The second stage involves manufacturing permanent one-piece removable combined gnathic prosthesis using transfer molding method after holding during 5-6 months to eliminate muscle contracture and form prosthesis bed. The prosthesis has hollow obturating part and full removable laminar dental prosthesis.
EFFECT: simplified production process; early stage cancer patient rehabilitation in half-maxilla resection cases.
SUBSTANCE: method involves covering dental structures or prostheses with ribbon manufactured from fibers and coating it with filling material layer. The ribbon is manufactured from fluorine-containing copolymer monofiber of circular cross-section woven as ribbon as it is shown on dwg 1.
EFFECT: provided dental structure balanced life when splinting and high adhesion degree of prosthesis to filling material.
FIELD: medical engineering.
SUBSTANCE: device has double layer base and artificial teeth. Base layer, facing prosthesis bed having external edges positioned in active movable part of mucous membrane in making engagement to transition vault fold enveloping upper lip frenulum and buccal folds with closing valve being formed, is manufactured from superelastic titanium nickelide. The base layer compensating alveolar process bone tissue atrophy is manufactured from acrylic plastic.
EFFECT: accelerated adaptation period; improved strength characteristics.