Method for making temporary denture
SUBSTANCE: invention refers to medicine, namely to dentistry, and is applicable in recovering the solid tissue volume and filling the denture defects before the final prosthetic repair. A cast dental model is made. Denture defects are filled with artificial acryl teeth with selecting their colour. The dental defect is to be filled. A cellulose plastic tray is made on the cast dental model with artificial teeth fixed. The tray is cut out of the produced plate. The tray is cut off along the dentogingival line of the repaired teeth. After abutment teeth are prepared, the tray with the artificial teeth is fitted to the patient's denture with pink elastic plastic applied on an inner surface of the artificial acryl teeth, and the inner surface of the tray is filled with autopolymer resin within the prepared teeth. The tray is filled with autopolymer resin of the temporary denture at least twice. The first layer of cold polymerisation plastic 1.0-1.5 mm thick is used to fill the solid tissue loss, while the second layer 0.5-1.0 mm thick restores the pink aesthetics and fixes the artificial acryl teeth.
EFFECT: method enables filling the denture defects, preventing the recurrences following the orthopaedic or orthodontic dental displacement by making and fixing the reliable and aesthetic structure with the acryl teeth and autopolymer resins on the patient's denture.
4 cl, 14 dwg, 2 ex
The invention relates to medicine, in particular dental, and can be used to restore volume to the hard tissue and fill the defects of the dentition before the final prosthesis.
The recovery of the amount of solid tissue and supplying the defects of the dentition crowns of any type of metal, ceramic, plastic, combo, etc. is the most common way to restore chewing efficiency, aesthetics and prevent the development of dental anomalies and deformations in prosthetic dentistry.
An important stage of dental prosthetics crowns and bridges is the use of temporary crowns on the stage in the production of permanent structures, and also to prevent the development of dentofacial deformities. The manufacture and use of temporary makeshift crowns provides functional stability of the dentition (occlusive, phonetic and aesthetic) and the prevention of periodontal disease by restoring the anatomical contour of the clinical crown, and prevents irritation of the gingival margin (Zakharyan LO, 2011). After carrying out orthodontic realignment before committing permanent fixed structures for the prevention of relapse of the deformity red who needs to make the retention of the prosthesis, not allowing for the development of deformation dentition due to the absence or destruction of the teeth (Gavrilov E.A., 1984). However, quite often, clinicians ignore temporary crowns due to the high cost, complexity of manufacture, or to save their own time. However, the manufacture of improvised constructions, complementary defects of dentition at the time of manufacture of the permanent prosthesis, sometimes, indeed, raises a number of difficulties. The greatest difficulty is filling defect of dentition with tooth that are located in different anatomical planes: frontal and sagittal (front and side teeth departments). Multidirectional vectors acting on the denture during chewing, often lead to fracture of the provisional restoration at the junction of acrylic or composite crowns, the most commonly used in dentistry as temporary. And to create the aesthetic effect of the crown after fitting need to be refined in the laboratory, which is extremely time-consuming.
There is a method of temporary crowns by removing the stamp from the dentition, preparation of the abutment teeth and overlay seal with plastic cold polymerization on the prepared teeth (Kalamkarov HA Orthopedic treatment with the use of metal-ceramic prostheses. Honey is Aspera, 1996, page 53).
A significant drawback of this method is the fragility of the resulting structures and, consequently, a high risk of fracture design. Low aesthetics is not possible to use these crowns in the anterior.
Known a better way of temporary crowns by obtaining Invisalign to further amendments of the composite, with its subsequent polymerization. Then Kappa is removed (see RF patent №2402994 prototype. The method of restoring the occlusal surfaces of the chewing teeth group includes the manufacture of celluloid plate mouthguards on the number of teeth obtained by pressing in a vacuum apparatus model of the jaw of the patient after preparation of the problematic tooth restored dental wax using an automated analysis system bite T-Scan, consistent with the principles of modern gnathology, with subsequent submission to the Kappa bioinert composite material, it locks on the row of teeth and polymerization.
The disadvantages of this method include the fact that the crown, thus obtained, is as fragile and prone to breakage. The process of separation of the mouthguard after polymerization causes considerable difficulty in clinical practice and requires long-term improvements in the oral cavity. This method cannot be applied for manufacturing is the service temporary crowns after conducting orthopedic or orthodontic tooth movement. This is due to the fact that acrylic plastic has no practical elasticity and firmness on the break and in conditions not fully stable dentition quickly breaks down or raspoliruyte.
Thus, there is a need to create temporary crowns high strength and aesthetics that are installed on the teeth located in the same plane and in different anatomical planes, able to compensate for a defect of dentition, to stabilize the dental system after elimination of dentoalveolar deformities, and to prevent relapses. All this leads to improved efficiency in orthopedic treatment and is the object of the present invention.
Delivered to the invention this object is achieved by a combination of known characteristics, such as the fabrication of the plaster model of the dentition with the subsequent manufacturing of the mouthguard of cellulose plastics, obtained by pressing in a vacuum apparatus model of the jaw of the patient, cutting mouthguard on gingival line of restored teeth with subsequent submission to the Kappa bioinert composite material with fitting and polymerization, and new signs, namely, that on the plaster model carry out the filling of the defects of the dentition using artificial acre the new teeth to their pre-fixation on the model in the field of defects, then after fabrication of mouthguards with fixation of artificial teeth by compression of the teeth mouthguards with drawing on the inner surface of the artificial acrylic teeth pink elastic plastic and fill the inner surface of the mouthguard in the area treated teeth self-hardening plastic, followed by the fitting and fixing of the mouthguard to the stumps treated abutment teeth.
Filling mouthguard self-hardening plastic temporary prosthesis carry out at least two times, the first layer of plastics cold-curing thickness of 1.0 to 1.5 mm to compensate for loss of hard tissue, the second 0.5-1.0 mm to restore the pink aesthetics and fixing an artificial acrylic teeth.
Filling defects of the dentition using artificial acrylic teeth is done by creating between the artificial tooth and the tooth-antagonist clearance equal to the thickness of the mouthguard.
Fixing dental acrylic teeth and self-hardening plastic on the dentition of the patient carried out at the time of manufacture a permanent structure.
The novelty of the proposed method is to replace the gypsum model of the defects of the dentition using artificial acrylic teeth to their pre-fixation on the model in the field of defects, then after fabrication of mouthguards with fixation of artificial C is a scale by compression of the teeth mouthguards with drawing on the inner surface of the artificial acrylic teeth pink elastic plastic and fill the inner surface of the mouthguard in the area treated teeth hardening plastic carry out the fitting and fixing of the mouthguard to the stumps treated abutment teeth.
So, fill in the plaster model of the defects of the dentition using artificial acrylic teeth allows in combination with the fill-hardening plastics and Kappa create a durable and aesthetic design that allow you to replace the defects of dentition in the same plane and in different anatomical planes, as well as to stabilize the dental system, to prevent the development of dentoalveolar deformities and relapses after orthopedic or orthodontic movement of teeth in their normal position.
Signs: fill mouthguard self-hardening plastic in the area of the occlusal surfaces of the temporary prosthesis carried out at least twice, the first layer of plastics cold-curing thickness of 1.0 to 1.5 mm to compensate for loss of hard tissue, the second 0.5-1.0 mm to restore the pink aesthetics, filling defects of the dentition using artificial acrylic teeth is done by creating between the artificial tooth and the tooth-antagonist clearance equal to the thickness of the mouthguard, and fixing the mouthguard with acrylic teeth and self-hardening plastic on the dentition of the patient, carried out at the time of manufacture a permanent structure, are in what nakami, revealing the specific implementation of core topics, and is aimed at achieving the invention of the task.
Thus, the fixation of dental acrylic teeth and self-hardening plastic on the dentition of the patient, carried out at the time of manufacture a permanent design that allows you to keep chewing, phonetic function, and aesthetics of the patient's face.
According to a patent information search characteristics of the proposed method have the criteria of patentability - novelty, involve an inventive step and are industrially applicable.
The photo originally presented all the stages of manufacture of the prosthesis to the phantom - artificial jaw.
Photo 1. Phantom dentition with no 3.5 and 3.6,
Photo 2. Plaster model of the dentition, supplemented by artificial acrylic teeth in the region of 3.5 and 3.6. Occlusal surface of cut 0.5 mm, acrylic teeth set, not reaching contact with antagonists of 0.5 mm (the thickness of the mouthguard).
Photo 3. Kappa installed on the dentition gypsum model, supplemented by artificial acrylic teeth in the region of 3.5 and 3.6.
Photo 4. Temporary non-removable retention bridge prosthesis with support for 3.4 and 3.7 and the intermediate part is made of acrylic teeth.
Photo 5. Temporary non-removable retention bridge the prot is based on 3.4 and 3.7 fixed to the abutment teeth artificial tooth row.
Photo 6 shows the dentition with the absence of 1.5 and destroyed coronal parts 1.4 and 1.6. 1.4 and 1.6 processed under fixed prosthetic design. Stump 1.4 restored pin tumbler-stump tab.
Photo 7 shows the dentition with a broken crown parts 3.4 and 3.5.
Photo 8 shows the model of the dentition, supplemented by artificial acrylic tooth with a filling defect in the region of 1.5 and restored anatomical shape of 1.4 and 1.6 composite material.
Photo 9 shows the model of the dentition with the restored anatomical form 3.4 and 3.5 composite material.
Photo 10 shows the Kappa, based on the model of the dentition, supplemented by one artificial acrylic teeth in the area of defect 1.5 and formed with anatomical shape of 1.4 and 1.6.
Photo 11 shows the Kappa formed with anatomical shape of 1.4 and 1.6.
Photo 12 shows a temporary fixed prosthesis retention, fixed on the abutment teeth of the patient based on the 1.4 and 1.6 and the intermediate part 1.5.
Photo 13 shows a temporary fixed prosthesis retention based on 1.4 and 1.6 and the intermediate part 1.5 (when closed tooth rows).
Photo 14 shows a temporary fixed prosthesis retention based on 3.4 and 3.5.
The proposed method is as follows.
Originally from imaut alginate mass of impressions of the teeth of the upper and lower jaws. Next, print cast plaster model of the jaw. The area of the defects of the dentition complement artificial acrylic teeth with the selection of their color. When the defect is implemented by its replacement by drawing on the plaster model of self-hardening plastic on the anatomical shape of the tooth. Then the obtained model with fixed artificial teeth are made mouthguard of cellulose plastic method of thermoforming, whereby a working model is placed in a vacuum apparatus and squeezed it warmed celluloid plate. From the obtained plate cut mouthguard with coverage far from the problematic teeth. Then trim the mouthguard on gingival line of restored teeth. After preparation of the abutment teeth to produce the fit mouthguard with artificial teeth to the dentition of a patient with pre-made self-hardening plastic. After polymerization plastics excess removed by cutting with a cutter, and make relines mouthguards by layering (application) self-hardening elastic pink plastic on the inner surface of artificial teeth. The final operation is to fix the fabricated structures to the abutment teeth on temporary cement (for example, "Repin", SpofaDental, Czech Republic).
A specific example of using the proposed method.
P is roncallo for each individual patient are preparing the problematic tooth (teeth) in compliance with a number of standard rules i.e. the removal of plaque from all tooth surfaces with a brush and polishing paste, complete removal of carious tissue, to the sound of crepitate, removal of pigmented dentin, test using a caries-marker. Then listed below perform the required operations of the proposed method.
A patient (age 38) appealed with complaints about aesthetic defect, expressed in the absence of 1.5 and destruction 1.4 and 1.6. Physical examination asymmetry of the face is not found, the third face is proportional. From the anamnesis: 1.5 no more than 10 years, 1.4 and 1.6 were previously covered cast dental bridges with intermediate part 1.5. The mucosa in the region of 1.4, 1.5, without pathological changes. Stump 1.4 supplemented pin tumbler-stump tab.
Rastamaniak bridge prosthesis with support for 1.4 and 1.6 happened about two years ago. To the dentist is not addressed. The result was dentoalveolar moving 4.5 and 4.6. After holding the position correction 4.5 and 4.6 began to compensation defect 1.5 and restore anatomical form 1.4 and 1.6. Diagnosis: Partial secondary edentulous 1.5. Class III according to Kennedy. Etiological sign of caries and its complications.
In order to bridge the defect of dentition, normalize the function of chewing on the stabilization time of dentition pic is e move 4.5 and 4.6, the patient was asked to make a temporary fixed prosthesis retention based on 1.4 and 1.6 and the intermediate part 1.5. In the future it was planned to replace it by a bridge of metal-ceramic prosthesis based on 1.4 and 1.6 with the intermediate part 15 on the upper jaw.
During the first visit alginate dental impression mass "Hydrogum" (Zhermak, Italy) took an imprint of the upper and lower jaws. Then carried out the casting from plaster working and auxiliary models, the modeling of the composite anatomical forms 1.4, 1.6 teeth. No 1.5 compensated artificial acrylic teeth and anatomical 1.4 and 1.6 restored using composite material chemical polymerization "Evicrol" (SpofaDental, Czech Republic). Then the obtained model with fixed thereto an artificial tooth in the region of 1.5 and restored anatomical forms 1.4 and 1.6 have produced a Kappa of cellulose plastic method of thermoforming, whereby a working model was placed in a vacuum apparatus and pressed her heated celluloid plate. From the obtained plate was cut Kappa. Pruning was carried out according gingival line of restored teeth. From mouthguards removed the remains of the composite, washed.
During the second visit were treated abutment teeth for porcelain fused to metal crowns, took a two-layer duatepe prints silicon "Speedex" (Coltene, Switzerland). After processing has made the relocation of temporary crowns by making the inner surface of the mouthguard sa is overdouse plastic "Temp S" (Bisico Germany), matched in color to the natural teeth of the patient. After solidification cut cutter plastic excess and made his second relines mouthguards by layering (application) self-hardening elastic pink plastic "PattemResin LS" (GC, Japan) on the inner surface of artificial teeth. Further recorded design to the abutment teeth on temporary cement ("Repin", SpofaDental, Czech Republic).
In the third visit was extracted temporary crowns from the oral cavity, probasbly constant construction and fixed permanent structure on glass ionomers cement.
The use of the proposed method created a temporary prosthesis aesthetic appearance, was sturdy and easy to use. Further observation showed that recurrence of dentoalveolar deformities was not.
A second specific example of implementation of the proposed method. Initially the patient B. with damaged crown parts 3.4 and 3.5, a diagnosis of partial secondary edentulous 3.6, 3.7 II class at Kennedy, alginate mass took impressions of the teeth of the upper and lower jaws. Further prints were cast plaster model of the jaw. Anatomic shape 3.4 and 3.5 restored with composite material chemical polymerization. Then the resulting model produced a Kappa of cellulose plastic method thermoform the Finance. Next he produced a scrap of mouthguards on dental line of restored teeth 3.4 and 3.5. After recovery stump 3.5 pin tumbler-stump tab and preparation of the abutment teeth made the fit of the mouthguard to the dentition of a patient with pre-made self-hardening plastic material to "Temp S" (Bisico, Germany). After polymerization plastics excess removed by cutting with a cutter. Then made design fixed to the abutment teeth on temporary cement ("Repin", SpofaDental, Czech Republic).
The construction is made aesthetically pleasing fit and had high strength provided by the combination of bonded splints, artificial acrylic teeth and two layers of plastic.
Using the proposed method allowed us to store the geometry and aesthetics of the surface of the dentition. Staying in the Kappa-hardening plastic gave her the necessary rigidity, and Kappa gave the whole structure elasticity and played the role of the skeleton (framework). This feature has allowed to create temporary crowns on teeth that are located in different anatomical planes. Transparency and luster Kappa create the illusion gloss enamel, expanding indications for the use of such temporary crowns in the anterior. The elasticity of the mouthguard explains the possibility of its application without stress for the entire masticatory apparatus is in condition not fully stable dentition after tooth movement in orthodontic and orthopedic indications.
Currently, the authors have developed methodological recommendations on the use of the proposed method, experimental work on its implementation. Decided after conducting patent examination method essentially to proceed to its implementation.
1. A method of manufacturing a temporary dental prosthesis, comprising the manufacture of a plaster model of the dentition with the subsequent manufacturing model mouthguard of cellulose plastics, obtained by pressing in a vacuum apparatus model of the jaw of the patient, cutting mouthguard on gingival line of restored teeth with subsequent submission to the Kappa bioinert composite material with fitting and polymerization, characterized in that on the plaster model carry out the filling of the defects of the dentition using artificial acrylic teeth to their pre-fixation on the model in the field of defects, then after fabrication of mouthguards recorded in her artificial teeth by compression of the teeth mouthguards with drawing on the inner surface of the artificial acrylic teeth pink elastic plastic and fill the inner surface of the mouthguard in the area treated teeth self-hardening plastic, followed by the fitting and fixing of the mouthguard to the stumps treated abutment teeth.
2. The method according to claim 1, Otley is audica fact, filling the mouthguard self-hardening plastic temporary prosthesis carry out at least two times, the first layer of plastics cold-curing thickness of 1.0 to 1.5 mm to compensate for loss of hard tissue, the second 0.5-1.0 mm to restore the pink aesthetics and fixing an artificial acrylic teeth.
3. The method according to claim 1, characterized in that the filling of the defects of the dentition using artificial acrylic teeth is done by creating between the artificial tooth and the tooth-antagonist clearance equal to the thickness of the mouthguard.
4. The method according to claim 1, characterized in that the fixation of dental acrylic teeth and self-hardening plastic on the dentition of the patient carried out at the time of manufacture a permanent structure.
FIELD: medicine, pharmaceutics.
SUBSTANCE: invention relates to chemical-pharmaceutical industry and represents substitute of bone transplant, containing osteogenic agent and zeolite, which contains particles, containing ion-exchange cations of metals, present in quantity, effective for stimulation of osteogenesis in patient who needs it, in which said metal cations are selected from the group, consisting of zinc ions, silver ions, copper ions and their combinations.
EFFECT: invention provides optimal delivery of cations into injured region with resulting formation of healthy bone tissue.
SUBSTANCE: invention refers to medicine, namely to preventive and orthopaedic dentistry, and can be used in assessing the hygienic state of the oral cavity in the patient with removable dentures suffering partial adentia. An inner surface of the denture is coloured. A graphic mesh is applied. It is photographed, and a denture hygienic state index is determined. The graphic mesh is applied with using templates enabling dividing the inner surface of the denture into two segments. The inner surface of the denture is photographed with using a camera with a focusing centre lying along a median palatine suture at a mid-distance between a maxillary frenulum and a distal edge of the for maxillary dentures and along the line drawn between central incisors in the middle between a mandibular frenulum and a posterior edge of the denture, for the mandibular dentures. The dental deposit is assessed in each segment as 0 to 4 by the 4-point system, while the hygiene index is calculated by formula.
EFFECT: by using set of templates, method enables assessing the hygienic state of any removable dentures with partial adentia.
1 tbl, 3 dwg, 1 ex
SUBSTANCE: teeth to be restored are imprinted in silicone for diagnostic purposes without teeth preparation. A gypsum model is casted whereon a desired configuration of the teeth to be restored is modelled in wax. The wax model is contoured in silicone. The dental surface is thoroughly cleaned, and an inner surface of the silicone pattern in coated with an isolate compound. The silicone pattern is filled with acrylic resin polymer and placed onto the teeth to be restored. After the resin hardens, the plastic restoration is left on the patient's teeth. A flowable light cured pattern of a suitable colour is used for the aesthetic correction of an appearance of the plastic restoration in the patient's oral cavity. The plastic restored model is contoured in silicone which is used to make definitive restorations according to a common technique.
EFFECT: by making fit restorations with using the direct techniques, the method enables assessing the restoration result before the teeth preparation, making and placing the definitive restoration, and improving the aesthetic results of the restoration.
4 cl, 6 dwg
SUBSTANCE: invention refers to medicine, particularly to dentistry, and can be used for orthopaedic rehabilitation of the patients suffering postoperative upper jaw defects. A jaw obturator prosthesis comprises a rigid polyurethane basis with prosthetic teeth configured to fit a mucous membrane of the preserved hard palate tightly, and a hollow obturator configured in the form of a soft polyurethane frame within a junction of a scar ring and bearing a thin polished rigid polyurethane lid. The frame and lid are coupled by a mechanical retention of mushroom holes formed on an end surface of the soft polyurethane frame, and congruent mushroom flanges formed on an end surface of the lid.
EFFECT: invention enables recovering the phonetics and provides the reliable fixation of the jaw prosthesis by reshaping the obturator and using the structural materials of various rigidities when making it.
SUBSTANCE: invention refers to medicine, namely to dental orthopaedics, and aims at analysing the strength properties of temporary fixed dentures. A device for making identical experimental constructions of temporary fixed dentures consists of two mated rectangular box-shaped units and a stamp. The box-shaped units are made of a low-melting metal; an inner surface of each unit has a profile of a negative image of the construction of the temporary fixed denture longitudinally, and triangular saw cuts extending from occlusion surfaces of the negative image of each crown denture passing to the end surface of the box-shaped units. The inner surfaces of the box-shaped units have retention guides in the form of triangular spines on one unit and in the form of triangular recesses on the other one. Each of the end surfaces of the units projecting on the surface of abutment teeth has a profile of a positive image of prepared stumps. The stamp is made of a low-melting metal and has a profile of the positive image of the prepared stumps and prosthetic bed.
EFFECT: invention enables making the identical temporary dentures of various lengths made of various structural materials.
SUBSTANCE: space closure is staged: preparing two fibreglass pipes of a diameter of 1 mm having a length of a defect size. A ligature wire of a diameter of 0.250 mm is inserted into the fibreglass pipes. The fibreglass pipes are crossed over in the defect centre, and the ligature wire is hooked to form a figure of eight. Free ends of the ligature wire are fixed to dental brackets of abutment teeth. The fibreglass pipes are impregnated with a 5-Grade adhesive and polymerised with LED light. An individual artificial tooth is made of a photocomposite on the fibreglass pipes.
EFFECT: method enables providing higher quality of life in patients with bounded edentulous spaces, with partial primary and secondary adentia in the period of orthodontic treatment.
3 dwg, 2 ex
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.
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.
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.