Removable laminar denture
(57) Abstract:The invention is intended for use in prosthetic dentistry. The technical result is an increase in strength denture and improve its aesthetic properties. Removable denture plate contains acrylic base, reinforced with aramid yarns with teeth and supporting and retaining elements. The reinforcing element is designed as a two-layer grid of aramid fibres, plain weave density of 1 0,2 mm. The invention relates to medicine, namely to prosthodontics.Known removable laminar denture containing acrylic basis with teeth, supporting and retaining elements and reinforcing elements made of aramid fibres with a length of 1-1,5 mm [Toulatova N. A. Improving the efficiency of orthopedic treatment of patients by improving basic acrylic materials. Abstract. Diss. Kida. Sciences. - M., 1997 - 16 C.].However, this removable laminar denture does not provide sufficient durability of the prosthesis. Cannot uniformly mixing the base material with a clear number of cut fibers (0.5% of the total mass). With a larger or smaller amount of filler from aramid Nita is ZIS has a yellowish color.The purpose of this invention is to increase the strength of the prosthesis and improve its aesthetic properties.This objective is achieved in that the removable laminar denture containing acrylic base, reinforced with aramid filaments, teeth and supporting and retaining elements, the distinguishing feature is that the reinforcing element is designed as a two-layer grid of aramid fibres, plain weave density of 10.2 mmRemovable laminar denture with reinforced base made as follows: first, prepare a molding composition of the basic material. During swelling and ripening mass of preparing a reinforcing element - aramid mesh pre-soaked for 10-15 minutes modifying composition, representing a solution of 2,2-bis-(3-methacryloyloxy-2-oxopropoxy-4-phenyl)propane (BIS-GMA) in methyl methacrylate (MMA) and optionally containing a polymerization initiator is benzoyl peroxide (PB), in the following ratio of these components: 80 wt.% BIS-GMA, 19 wt.% - MMA, 1 wt.% - IB.Impregnated mesh is removed from solution and allow to drain the excess, gently fold in two layers at an angle 455oand fix in SP the SSA, putting it in both halves of the plaster moulds, condense. Then the latch with a reinforcing mesh is placed on one of the halves of the plaster moulds, cover and clamp, gradually increasing the pressure. Bring to full clamping halves form and maintain it under pressure of 60 minutes Then clamp in the form of a dental clasp and produce heat treatment of acrylic plastic in the traditional mode.After heat treatment the form is cooled to room temperature. Then make processing and polishing basis; border-acrylic base zashlifovyvajut 1-2 mm.Directly on this basis made of wax occlusion rollers to determine centric relation of the jaws. After setting artificial teeth on acrylic basis of the design check in the mouth. Then conduct a simulation basis. To do this, on its inner and outer surfaces apply a thin layer of silicone impression of the mass of liquid consistency and injected into the cavity of the mouth. The final simulation of basis is performed under the action of chewing load using a series of functional tests. Excess silicone mass cut off the necks of the teeth and remove. In subatech epenetos method and place of prosthetic bed.This method is effective for solving complex tasks associated with improving the quality and durability removable laminar dentures.Manufacturer of acrylic dentures with reinforced base allows to improve the physico-mechanical and aesthetic properties of dental prostheses, thereby improving the efficiency of orthopedic treatment.Clinical testing removable laminar dentures with new reinforced base shows their high functional value, good fixation and stabilization, reduction of the period of adaptation, the increase in service life. Removable laminar denture containing acrylic base, reinforced with aramid yarns with teeth and supporting and retaining elements, characterized in that the reinforcing element is designed as a two-layer grid of aramid fibres, plain weave density of 1 0,2 mm.
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
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.
20 cl, 56 dwg
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.
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.