Removable denture

FIELD: medicine.

SUBSTANCE: invention refers to dentistry and is applicable for orthopaedic rehabilitation of patients with completely absent dentition. A removable denture consists of a basis made of a rigid polymer dental product with fixed false teeth, and an elastic part adjoining a prosthetic bed. Trough-shaped grooves 1 mm deep divergent radially from the centre and extending onto a vestibular surface of the denture within a transient fold into a right-angled chamfer along the perimeter of the denture are formed on the basis from an internal side facing the prosthetic bed.

EFFECT: invention provides the higher adhesion strength of the soft pad and the rigid carrier of the basis, its uniform distribution along the surface of the prosthetic bed, as well as a possibility of re-use of the denture if the physical-mechanical characteristics of the elastic part occurred to be disturbed.

1 dwg

 

The invention is intended for use in dentistry, namely orthopedic dental rehabilitation of patients with complete absence of teeth.

Orthopedic treatment of patients with complete absence of teeth and adverse clinical conditions on the lower and upper jaw, such as when increased pain sensitivity of the mucous membrane of prosthetic bed or sharp uneven atrophy of the alveolar process and the available acute bony prominence and exostosis, presents certain difficulties. In such cases, it is shown the fabrication of removable dentures with a lining of elastic plastic (two bases).

There is a method of manufacture of complete dentures with elastic lining, whereby to avoid the detachment of the soft layer from the main base region base plastic grease monomer, pressed a soft plastic with solid and then conducting polymerization (Vinkopan, Lamar "Prosthodontic technique", 1985). However, over time the relationship between soft lining and hard the basis weakens, which leads to fragility in the operation of such prostheses.

A known method of making a removable dental prostheses (RF Patent No. 2132661), in which the plaster model is made with a gap contrastin that plasma n is dusting cause retention of the metal layer with a high degree of surface development, faced on one side with an elastic plastic. On the opposite side of the metal layer to form a hard acrylic base denture.

There is a method of making dental prostheses (RF patent No. 205543, CL AS 13/00. "Method of manufacture of complete dentures". Authors: Grishechkin S.D., Petrosov UA), by which the toothless jaw along the perimeter of the prosthetic bed made the protrusion of the elastic plastic with a rigid Foundation.

Known "Method of fabrication of dentures in the complete loss of teeth." (Patent RF № 2008845), in which before applying the elastic material (padding) on the contact surface of the base causing the cutter retention points (intersecting risks, strokes, channels and other), and the elastic layer is applied polymeric film material.

Removable dental prosthesis manufactured by the above method was chosen for the prototype.

The disadvantages of this method is that the application of retention points does not provide a sufficient degree of development of the surface of the basis and accordingly strong link elastic layer with a rigid base, and the randomness of their application does not lead to uniform decompression, the same polymeric material as the operation is undergoing significant destructive changes caused by the aging process of the polymer, which limits the practically the e use of such prostheses. And the biggest disadvantage of these prostheses is that if the damage is elastic layer and its removal by milling leads to damage to the base of the prosthesis and, often, the prosthesis has to be created anew.

The objective of the invention is to improve the quality of orthopedic rehabilitation patients with increased pain sensitivity of the mucous membrane of prosthetic bed, sharp irregular atrophy of the alveolar process and in other cases when it is necessary to unload tissue prosthetic bed in the absence of teeth.

The technical result of the invention is to improve the adhesion of soft lining with a rigid basis, its uniform distribution on the surface of the prosthetic bed, as well as the possibility of repeated use of the prosthesis for violations of physico-mechanical properties of the elastic part.

The technical result is achieved due to the fact that the removable dental prosthesis consists of a base made of rigid polymeric dental material with the set of artificial teeth and an elastic portion adjacent to the prosthetic socket, characterized in that on the basis on the inner side facing the prosthetic socket, there are geleobraznye grooves with a depth of 1 mm, diverging from the center radially and passing on the vestibular p is the surface of the prosthesis in the area of transition in sweet formed at an angle of ninety degrees ledge, made around the perimeter of the prosthesis, on the specified jeleobrazna the grooves and the ledge are evenly distributed and additional mechanical retention elastic part of the prosthesis covering all prosthetic bed.

Geleobraznye grooves and the ledge around the perimeter of the prosthesis provide uniform decompression distribution of elastic lining without flows, and also improve the adhesion of the elastic part of the prosthesis with hard, which ensures a high level of congruency of the mating surfaces and reduces the level of colonization of microorganisms. If necessary, replace the soft lining of elastic material is removed from the inner part of the prosthesis and of these grooves and ledges, with a hard base with artificial teeth, adjusted occlusal relationship of the dentition can be used repeatedly, which is convenient and cost effective for the patient.

Removable dental prosthesis illustrated drawings, in which:

1 - the basis of the prosthesis

2 - artificial teeth

3, the internal surface of the prosthesis

4 - geleobraznye grooves

5 is a ledge around the perimeter of the prosthesis

6 - elastic layer

Removable dental prosthesis is manufactured as follows. Get a print and fabricate models, which are made bite templates with occlusive rollers and individual impression is Oki. Then get a print using individual spoons. To fabricate working models, and determine the Central value of the jaws. The produced models of the wax model base of the prosthesis 1 and carry out the setting of the teeth 2. The clinic is fitting wax bases and the removal of occlusal relationships. On wax basis 1 with the inner surface 3 model geleobraznye grooves 4 depth of 1 mm, diverging from the center radially and passing on the vestibular surface of the prosthesis in the area of transition folds, to form a ledge 5 at an angle of ninety degrees, made around the perimeter of the prosthesis. Translate the obtained wax design in acrylic method of cooking, process the prosthesis. On the inner surface of the prosthesis is applied elastic layer and giving in the oral cavity of the patient, after it removed the excess, the prosthesis is polished and polished.

Removable dental prosthesis, consisting of a base made of rigid polymeric dental material with the set of artificial teeth and an elastic portion adjacent to the prosthetic socket, characterized in that on the basis on the inner side facing the prosthetic socket, made geleobraznye grooves with a depth of 1 mm, diverging from the center radially and passing on the vestibular surface of Protasov transition zone in sweet formed at an angle of ninety degrees ledge, made around the perimeter of the prosthesis.



 

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FIELD: medicine.

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FIELD: metallurgy.

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3 dwg

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2 ex

FIELD: medicine.

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FIELD: medical engineering.

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FIELD: medical engineering.

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FIELD: medical engineering.

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EFFECT: enhanced effectiveness of treatment.

2 dwg

FIELD: medicine.

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FIELD: medicine.

SUBSTANCE: method involves carrying out odontopreparation, forming cylindrical tooth stump to gingival level, forming a projecting part on this place and fixing net carcass on the stump followed by crown part restoration using composite material. When forming stump, occlusion surface is filed off by 0.9-1.2 mm and additional retention zones like 0.2-0.3 mm deep horizontal grooves are formed on the aproximal surfaces. The carcass is produced from gold-plated metal wire net having 0.4 mm large meshes to fit the stump. Before being fixed, the net carcass is treated twice with masking agent leaving meshes open. Final crown part restoration follows with anatomical tooth shape being taken into account.

EFFECT: fully restored anatomical tooth shape; high strength of tooth walls; long service life; high esthetic quality.

FIELD: medicine.

SUBSTANCE: method involves applying preparative endodontic treatment, fixing reinforcing net in prepared cup-like tooth cavity formed and produced in root base zone. The cup-like tooth cavity is formed after having temporarily fixed crown part walls along the fracture line using enveloping composite ring, gingiva retraction and preparing demineralized tissues. The crown part walls are formed from composite material keeping to anatomical shape of tooth under restoration after having fixed root fracture with glass ionomer cement being used. The net is shaped in advance to make it congruent to cavity of tooth under restoration and fixed in the cavity by means of fluid composite. The formed cavity is filled with microfilled composite. Macrofilled composite is used for building tooth crown part and tubercles.

EFFECT: high strength of the structure; long service life.

FIELD: medical engineering.

SUBSTANCE: method involves carrying out electrochemical degreasing metal prosthesis carcass surface, anodic etching and cathodic etching and then coating with 0.1-0.3 mcm thick primary gold layer from acid electrolyte. Next to it, 40-50 mcm thick basic gold layer is deposited from alkaline electrolyte.

EFFECT: improved esthetic properties; lowered toxic properties of alloy.

FIELD: medical engineering.

SUBSTANCE: method involves producing plaster jaw model from imprints taken in advance and modeling half-finished wax bite cap article next to it. Silicon mould is manufactured by applying manual molding method with through sprue holes used for filling space, produced after removing half-finished wax bite cap, with plastic. The silicon mould is withdrawn after having plastic polymerized, flow gates are cut off and their attachment places are polished.

EFFECT: simplified process; normalized lower face part height.

1 dwg

FIELD: medical engineering.

SUBSTANCE: method involves molding plaster jaw models from obtained anatomical imprints. Then, intermediate modeling of future dental bridge structure is carried out using wax, dental row plaster model segment imprint is produced on the area restricted with bearing teeth, intact dental row plaster die is manufactured, transparent dental kappa is produced from acryl using hot forming and adjusting abutment teeth stumps imprints and marginal area of intermediate portion of temporary dental bridge structure.

EFFECT: high strength; stable tooth row occlusion.

FIELD: medicine.

SUBSTANCE: method involves applying endodontic treatment of root, fixing pin manufactured from gold-coated metal gauze having free wires on opposite ends and repairing dental crown part with composite materials depending on particular morphological features of the dental row and length of area between the abutment teeth, to be substituted. The pin is fixed in root canal and mediodistal slot made in advance on its base with twisted wires. The wires on the opposite ends are bent towards vestibular side and additionally fixed with beams fixed in advance on the abutment teeth. The wires are brought above the upper and under lower beams. The beams and wires are treated with masking agent before repairing dental crown part.

EFFECT: enhanced effectiveness in restoring functional and esthetic properties of dental row; accelerated treatment procedure; reduced risk of traumatic complications.

2 cl

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