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.
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.
SUBSTANCE: invention refers to veterinary science, namely to prosthodontic treatment, and is applicable in making removable nylon prosthesis for the upper front teeth, including high-crown ones, such as pointed teeth. Both jaws are impressed. Master moulds are cast of die stone. Working and additional models are placed into an occludator. A future prosthesis is delineated on the working model. A wax basis is made of a wax plate. A tooth is moulded in wax, mounted in a tray and placed in boiling water. The wax is extracted and replaced by acryl. After removing, the acryl tooth is processed and polished. A socket is drilled in a base of the acryl tooth. At least two through canals are drilled from the socket above a gingival level on a palatolateral and palatomedial tooth surface. A shallow notch is made a little above the socket bottom on the outside along the whole circular length with using a ball-shaped bur. The artificial tooth with retention canals and peripheral notch is aligned with a bite and mounted on the wax basis. After the tooth is arranged, an incisal-tooth-gingival rest is moulded. The model is prepared for casting in the tray, and the teeth that can be used as retention points are ground off. The model is cast in a lower portion of the tray. Before the upper portion of the tray is cast, a gate system is mould of wax. Both portions of the tray are coupled together and bolted up. Dental stone setting up is followed by unscrewing and placing in boiling water for 10 minutes. The tray is opened, residual wax is washed out with hot water, and mould and counter-mould surfaces are processed with a divisional polish. After the division polish dries, the tray portions are connected and screwed. The prepared tray is inserted into a heated injection machine, wherein nylon under pressure fills all the retention canals of the tooth extending in the cone bells, encloses and crimps the notch along the periphery. Further, the tray is removed from the injection machine. The tray is left at a room temperature for 20 minutes and then placed in cold water until cooled completely. After the tray is opened, the prosthesis is removed, cleaned from dental stone, processed and polished. The prosthesis is applied into an animal.
EFFECT: method enables making the removable nylon prosthesis of the upper front teeth in dogs, including high-crown teeth, such as pointed teeth by creating special retention canals and peripheral notches in the acryl tooth.
4 cl, 9 dwg
SUBSTANCE: rigid splint recording of the lower jaw position in relation to the upper jaw is prepared on a denture of one of the jaws. A surface of the recording splint is adjusted in relation to the denture surface of the other jaw. The patient is adapted to the optimum position of the jaws for at least two months to achieve a symmetrical position of heads of the maxillotemporal joints. The jaw casts are mounted in a regulated articulator with the use of an occlusion splint recording the jaw position to be thereafter removed, and a space for mounting prosthetic structures is formed. The optimum position of the heads of the maxillotemporal joints is determined by multispiral computed tomography findings, at least twice. For the first time - prior to the prosthodontic treatment, for the second time and further - upon completion of optimising the lower jaw position in relation to the upper jaw, and further - after the temporary fixation of the prosthetic structures in the patient's oral cavity.
EFFECT: method enables creating the optimum positions of the heads of the lower jaws in the maxillotemporal joints by using an occlusion splint as the maximum occlusion recorder.
4 cl, 1 ex, 10 dwg
SUBSTANCE: proposed alloy contains the following components in wt %: carbon - 0.36-0.55, silicon - 0.7-2.5, manganese- 0.25-1.00, chromium - 27.5-30.5, molybdenum - 3.5-6.0, tungsten - 0.55-1.55, boron - 0.03-0.10, nickel - not over 0.5 and iron - not over 0.3 Note here that total amount of molybdenum and tungsten does not exceed 4.5-7.0.
EFFECT: higher strength and lower melting point, sufficient linear expansion factor, antirust properties, machinability.
SUBSTANCE: milled occlusal template for the reproduction and formation of occlusal denture contacts in making single and/or crown fixed dentures by computed milling of an ash-free plastic pieces by optic impression immediately with wax dental reconstruction with the occlusal contacts. The occlusal contacts are modelled using an articulator including the occlusal relations of the centric and excentric contacts. A lower border of the milled occlusal template is specified at the level of an equator. An internal surface of the template matches with an occlusal surface of the wax teeth. The occlusal template consists of two equal halves coupled longitudinally to visualise and facilitate the restoration.
EFFECT: invention enables the accurate representation of the modelled occlusal dental surface to be reproduced in the dental restoration.
SUBSTANCE: invention refers to medicine, particularly to dentistry and applicable in making removable dentures, obturators and maxillofacial components. The method consists in the fact that depending on the quantitative content of gold and silver components, 99.99% or 75% pure gold or a gold alloy in the form of a foil, powder flocks of the thickness of 1 mcm (micrometre) to 8 mcm is taken; further a portion required for making a modified dental plate, an obturator or a maxillofacial prosthesis is separated on weight basis in the ratio of 300:1, wherein 300 is a weight part of acrylic plastic or silicone, while 1 is a weight part of gold and its alloys. Alternatively, the ratio can be varied with an increase or decrease of a portion of gold and its alloys in the modified acrylic or silicone material. Thereafter, the acrylic or silicone components are mixed thoroughly with the gold or alloy component, and mould into a prepared flask with a dental prosthesis, and polymerised by a traditional approach.
EFFECT: invention provides eliminating the patient's discomfort in the mouth cavity, reducing a microbial adhesion to the dental plate, as well as promotes the epithelisation of mucosal injuries of the prosthetic bed.
SUBSTANCE: invention relates to the field of medicine, namely, prosthetic dentistry, and is designed to protect the vestibule of the oral cavity and the dentitions for the period of training and competitions. Individual sports teeth splint is made of elastic plastic. The splint covers the superior jaw dentition, hard palate and the vestibular slope of the alveolar ridges. On the lower jaw to the height of contour, the splint overlaps only the side groups of teeth of the lower jaw. The front part of the splint is manufactured with a height of 2 mm - 4 mm shorter than the distance of the patient physiological rest.
EFFECT: invention enables to create conditions for mouth breathing and smooth taking of liquid by creating of respiratory clearance between the splint front part and the cutting edge of the front group of the teeth of the lower jaw.
SUBSTANCE: invention relates to dentistry and is intended for application in orthopedic and therapeutic dentistry. Gypsum models of patient's jaws are made. Biomechanics of lower patient's jaw movements is studied. Angles of sagittal and transversal joint paths of patient are determined. Obtained values are marked on scale of joint units of articulator, which imitates individual movements of patient's lower jaw. Gypsum models are placed in claimed apparatus and ceramic thin half-crowns are modelled on them under constant control of interaction of dentitions and articulation contacts, proper to patient. Preparation of teeth before application of prosthesis according to method includes grounding off sharp enamel crests and processing teeth surface by airbrasive machine with powder with size 50 mcm under pressure 20 atm until dull surface of enamel appears.
EFFECT: method makes it possible to reduce trauma and preserve viability of teeth with prosthetic appliance due to elimination of preparation of hard tissues of said teeth.
2 dwg, 1 ex
SUBSTANCE: invention refers to medicine, namely to dentistry and may be used in the orthopaedic treatment of the patients with partial and/or complete denture defects using removable laminar dentures. A method involves making the removable laminar dentures, taking the oral hygienic measures, cleaning the removable laminar dentures. Ozonised olive oil is applied on an internal surface of the prosthetic basis that is followed by applying the prosthesis on the denture defect for 10-30 minutes. The prosthesis with ozonised olive oil applied on the internal surface of the basis is attached once a day for 8-16 days.
EFFECT: method provides more effective patient's adaptation to the removable laminar dentures due to the polycomponent mechanism of ozonised olive oil in the same environment with no negative side effects.
2 ex, 2 dwg
SUBSTANCE: invention refers to medicine, namely dentistry, and aims at the prosthetic dentistry quality assessment. High-viscosity elastomer 0.5-0.6 cm3 that is a basic layer A of Silagum Putty silicone is divided into two equal portions and placed on occlusal surfaces of the patient's fifth and sixth lower prosthetic teeth on the right and left. The patient is asked to occlude the teeth for 3-4 seconds. The test result is considered to be positive if the prosthesis keeps on the lower alveolar process once the mouth is opened. If the prosthesis is retained by the material at the upper teeth, the test result is considered to be negative.
EFFECT: method enables obtaining the objecting data of the complete denture attachment to prosthetic bed due to the visual assessment of the test result.
SUBSTANCE: invention refers to medicine, namely to orthopaedic dentistry and aims at improving the removable denture. Trough-shaped grooves 1 mm deep divergent radially from the centre and extending onto a vestibular surface of the prosthesis within a transient fold, are formed on a basis from an internal surface using a pear-shaped chisel of the diameter of 2 mm; a chamfer is formed at an right angle along the perimetre of the prosthesis. An autopolymer resin paste of the second stage of swelling is applied on the internal surface of the prosthesis and fixed in patient's oral cavity in the position of centric relation of the jaws. The excess material is removed, and the prosthesis is polished.
EFFECT: method enables higher quality of removable denture fixation in patient's oral cavity with various compliance ratios of prosthetic bed mucosa due to the intra-oral reline.
FIELD: medical engineering.
SUBSTANCE: method involves producing an opening of diameter reaching 2 mm with diamond or hard alloy bore in adhesive cover after preparing abutment tooth and prosthesis or widening already available perforation also to diameter of 2 mm. The prosthesis is set on the abutment tooth and place is marked for creating and directing pin-canal in the area of cutting one-third of the frontal abutment tooth or in the lateral abutment tooth equator area. The pin-canal direction is to correspond to path for introducing the prosthesis. The pin is screwed-in with screwdriver and holder to a depth of about 2 mm into dentin. The prosthesis is set on the abutment for making control. The pin is filed-off to adhesive cover layer after having fixed the prosthesis on composition cement.
EFFECT: prolonged service life; high functional value.
FIELD: medical engineering.
SUBSTANCE: method involves taking anatomical imprint from jaw under prosthetic repair, casting supergypsum model for carrying out parallelometric studies, model duplication, modeling future clasp carcass skeleton from wax, enclosing the wax model into cell filled with gypsum, evaporating wax and filling the arisen cavity with polymer. The clasp carcass model is reproduced as metal one from polymer model for all models taken in production. Polymer for manufacturing clasp carcass model is reactive composition hardening at room temperature and composed of two ingredients taken in 2:1 proportion by weight. The first ingredient portion is based on polymethyl methacrylate, and the second one is polymethyl methacrylate with dimethylaniline added in the amount of 1-2% by mass.
EFFECT: significantly accelerated carcass manufacturing process; high accuracy in reproducing sizes; improved connection of locks and telescopic crowns to polymer carcass; low production costs.
FIELD: medical engineering.
SUBSTANCE: device has vestibular and oral parts connected to each other with crosspieces manufactured from orthodontic wire placed in interdental spaces by producing jaw imprints. Working and auxiliary models are molded. To place treating bandage, general clinical equator of all teeth included into the splint is to be determined on working model using parallelometer. Then, space between the clinical equator line and gingiva and a gingiva part 7-8 mm remote from gingival papillae are covered with dental wax layer of thickness equal to or less than 1.5 mm. Next to it, duplicate model is produced for manufacturing the splint having recess equal to wax layer thickness 1.5 mm. Changing wax for transparent plastic, filing and polishing the splint is carried out by applying method of common use.
EFFECT: enhanced effectiveness of treatment.
SUBSTANCE: method involves reinforcing crown part defect with wave-shaped wires. The wires are taken in advance from gold-coated metal network, Ѕ tooth root length long wire portion is twisted and fixed in the canal. Free ends of the wires are distributed along vestibular surface of tooth cutting edge and bent towards vestibular tooth surface 1-1.5 mm below the cutting edge. Free ends of the wires are fixed in oval tooth cavity on the vestibular tooth surface side. Artificial enamel layer is produced from macrofilled composite material anatomically matching in shape the incisor crown part, fixing the wave-shaped wires in composite material. Artificial dentine is produced from microfilled composite material.
EFFECT: high strength of incisor walls; long service life under chewing loading.
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.
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.
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.
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.