Method for aesthetic dental restoration
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
The invention relates to medicine, in particular to the dentist, and can be used for aesthetic prosthetics.
There is a method of aesthetic prosthetics "Strip" crowns (3M ESPE DENTAL, Germany), which is a removable celluloid cap, released 16 different sizes and different shapes for the teeth of the upper and lower jaw. In accordance with the way the tooth prepare an accepted way for prosthetics, select the "Strip" the crown under the restored tooth, adapt it under the restored tooth (cut), then bring in the crown of the composite material and install it on a prosthetic tooth. After polymerization of the composite crown removed ("Strip" of the crown, or a long way to the aesthetics of the youngest. / Zaalov NR. / http://www.stom.ru/vrachi/article/57).
The disadvantage of this method is that the data crowns have average sizes and shapes and may not reproduce and form as individual tooth shape and harmonious occlusal contact relationship of the dentition, which affects the results of the aesthetic restoration. In addition, the known method does not allow you to visually verify its aesthetics for the patient prior to preparation of the tooth and its installation on a tooth that does not allow you to make adjustments in its appearance and ukhudshe the results of aesthetic prosthetics.
There is a method of aesthetic restoration of the occlusal surfaces of chewing teeth (RF patent No. 2402994, AS 13/00, AS 19/00, 10.11.2010), according to which receive the imprint of the silicon, which made working and bite models from plaster. The resulting model is fixed to the articulator. On a working model recover lost wax patterns, given antagonists and verifying the sagittal and transverse movement. On the models in the articulator analyze occlusal relationships of the teeth using an automated analysis system bite T-Scan and compares it with the data obtained previously in the clinic. The working model with the recovered her lost wax structures of the teeth are placed in a vacuum apparatus and squeezed it warmed celluloid plate. Cut the Kappa within three teeth, namely problematic and adjacent. In the Kappa crown for the restored tooth is filled with composite material. The tooth is prepared according to the rules of working with composites (treatment of tooth, washing it, drying of the tooth, the application of the bonding system, the light-last). Then the Kappa installed on prepared and standing next to the teeth. Excess composite is removed. Composite material will polimerizuet according to the rules use the Oia this composite, compliance with all the regulations, and the curing time increases twice on each side. At the completion of curing the composite mouthguard is removed from the teeth by the use of an excavator or probe moderately "siraudin" movement. At the last stage of restoration produce the smoothing and polishing of the tooth.
The known method of esthetic restoration of teeth allows to take into account the individuality of the form of restored teeth and features of occlusal contacts of teeth, which improves the results of the aesthetic restoration of teeth. However, the known method does not allow aesthetic correction of the future prosthesis prior to its manufacture, because visually the patient and the doctor can ensure the aesthetics of the prosthesis only after final installation of the finished denture teeth, which excludes the possibility of aesthetic correction of the appearance of the prosthesis, and therefore affects the results of aesthetic prosthetics.
Currently in dental clinical practice to perform aesthetic dental restoration is widely used by computer technology, which means photoshop allow in advance to see the result of the prosthesis by the patient. In this case, the restored teeth prepare for future restoration, remove from the restored teeth diagnostic silicone impression on the base of which is made a working model of plaster, on which a wax model of the future restoration. Then, using photoshop, get a photo of the patient with restored teeth. Adjustments carried out on a wax model and demonstrate again the patient the results of future restoration on the computer screen (Abiev. PHD and others ' Use of the Golden proportion in the aesthetic treatment, 5A, 5B, 2005, INTERNET http://www.sswhite.ru/article_41/htm). This way the aesthetic restoration of teeth is closest to the offer.
The disadvantage of this method esthetic restoration of teeth closest to the offer, is that the computer method of evaluation of the aesthetics of the future restoration is virtual, and it is by pictures of the patient. Evaluation of the restoration on pictures of the patient's installed in the oral cavity restoration does not take into account the real correlation between the lips and soft tissues of the oral cavity of the patient, and to consider the work of the facial muscles. As a result, reduced the reliability of the information obtained with the help of computer graphics, and hence deteriorate the results of the aesthetic restoration of teeth.
In addition, the detected known methods of esthetic restoration of teeth does not allow to assess the functioning of the future prosthesis prior to its final installation on the restored teeth. If e is ω preparing teeth for restoration performed by the conventional technology without considering its future appearance, what is often unjustified and leads to excess withdrawals as the tissues of the tooth (analogs), and facial enamel (prototype). The result is reduced physiology known methods.
Thus, identified as a result of a patent search methods esthetic restoration of teeth when the implementation does not achieve the technical result consists in the evaluation of the restoration from the point of view of aesthetics and function directly in the oral cavity of the patient prior to the preparation of the teeth, to manufacturing and installation of permanent restoration, to improve the aesthetic results of the restoration, enhancement physiology.
The proposed method esthetic restoration solves the problem of creating an appropriate way, which allows to achieve the technical result consists in the evaluation of the restoration from the point of view of aesthetics and function directly in the oral cavity of the patient prior to the preparation of the teeth, to manufacturing and installation of permanent restoration, to improve the aesthetic results of the restoration, enhancement physiology.
The essence of the claimed invention is that in the way of aesthetic dental restoration, in accordance with which the receive diagnostic silicone impression from the teeth, to be the restoration, on the basis of which produce a working model of plaster, on which a wax model of the desired shape of the restored teeth, the future result of the restoration is demonstrated to the patient prior to fabrication and installation in the mouth, what is new is the fact that to obtain diagnostic silicone impression of the teeth to be restored, not dissect, in addition, after the manufacture of the wax model with the removed silicone impression, then the surface of the teeth thoroughly clean, and on the inner surface of the silicone impression put isolant, and then a silicone impression fill self-hardening plastic and place it on restored teeth after hardening plastic silicone impression is removed so that the teeth of the patient remains plastic restoration, which demonstrate to the patient as a result of a future restoration of the teeth, if necessary, adjusts the appearance of plastic restoration directly in the oral cavity of the patient, and then, after reaching the desired aesthetic result, in the oral cavity of the patient with plastic restoration remove silicone impression on the basis of which by the conventional technology made permanent restoration. In addition, the adjustment of appearance plastic restoration perform or Jew who otakucon light-cured material of the corresponding color, or mechanically remove excess plastic; permanent restoration is made of all-ceramic veneers; after reaching the desired aesthetic result plastic restoration is left on the teeth of a patient for two or three days, after which the plastic restorations in the oral cavity of the patient is removed with a silicone impression.
The technical result is achieved in the following way. The essential features of the claims: "a Method of aesthetic dental restoration, in accordance with which the receive diagnostic silicone impression from the teeth to be restored, on the basis of which produce a working model of plaster, on which a wax model of the desired shape of the restored teeth, the future result of the restoration is demonstrated to the patient prior to fabrication and installation in the mouth,..." are an integral part of the inventive method in conjunction with the remaining significant signs shall ensure the implementation of the inventive method, therefore, achieve the stated technical result.
In the proposed method, before receiving diagnostic silicone impression of the teeth to be restored, not dissect. This prevents undue removal of facial enamel to produce the final results aesthetic adjustments, the call is employed to optimize the process of preparation of restored teeth and improves the physiology of the claimed method. In addition, preparation of teeth for quite some restoration, pre meet the requirements of the patient in relation to aesthetics, increases the aesthetic results of the restoration.
Silicone impression, which removed the inventive method with wax models, fixes on its inner surface the results of the restoration, i.e. its inner surface congruent surface wax restoration. Use for filling silicone seal liquid plastic, due to its fluidity, ensures complete filling of the internal volume of the silicone seal. As a result, after curing, the shape of the outer surface of the plastic restoration congruent to the shape of the inner surface of the silicone impression, and consequently, the shape and the outer surface of the plastic restoration completely the same shape and surface wax restoration.
The use of liquid plastic allows for the installation completed her silicone print on restored teeth, and due to the fact that the self-hardening plastic, allows its solidification directly in the oral cavity of the patient. Careful cleaning of the tooth surface enhances adhesion of the plastic to the surface of the teeth, increasing the strength plastic restoration.
Since the inner surface of the silicone seal put isolant, provides the opportunity to separate the silicone seal from the plastic without destroying the latter. In the plastic reproduction is firmly "seated" on the teeth.
Thanks durable installation plastic restorations on the teeth, it can be kept for a few days on the patient's teeth, which allows to qualitatively assess its functioning.
Because after hardening plastic silicone impression is removed so that the plastic restoration remains on the patient's teeth, and the shape and the outer surface of the plastic restoration completely the same shape and surface wax restoration, it is possible to try a wax model of the restoration directly in the oral cavity of the patient, allowing for the assessment of future restoration from the point of view of aesthetics directly on the prosthetic bed of the patient, allows you to demonstrate to the patient the result of a future restoration of teeth and to take together with your physician decision making adjustments to the appearance of the restoration.
However, as restoration is directly in the oral cavity of the patient, and performing aesthetic adjustments performed directly in the oral cavity of the patient, the formation of aesthetic restoration involves all soft tissue cavity is the patient's lips and, the mimic muscles of the face. As a result, improves the results are not only aesthetic restoration, but also improve the functional quality of future restoration, which increases its physiology.
The excess plastic is removed mechanically. Performing aesthetic adjustments flowable material of the respective color allows you to make restoration of even the most minor changes, as well as select the color of the future restoration. Use to adjust the light-reflecting material provides reinforcement of the result. The result is improved aesthetic results of the restoration.
In the proposed method when the desired aesthetic result in the patient's mouth with plastic restoration remove silicone impression, which is made of a diagnostic model, on the basis of which by the conventional technology made restoration. However due to the fact that plastic restoration transmits the information about the desired patient's appearance, as well as information pertinent to the condition of the soft tissues of the oral cavity, their relationship with the lips of the patient, functional chewing and articulation, include the work of the facial muscles, it allows you to receive restoration that takes into account all the wishes of the patient and which fully satisfies n is only aesthetic appearance, but is physiological.
From the above it follows that the claimed method of the aesthetic restoration of teeth allows you to get direct way fitting restoration of self-hardening plastic material, on the basis of which is made permanent restoration. This allows the use of the claimed method for obtaining physiological, ideally sitting and having the exact contour of the facing. This requires a minimum expenditure of time and materials. In addition, since the claimed method does not require the preliminary preparation of teeth, it allows the patient and the dentist to visually study the treatment plan, which does not exclude the adoption of alternative solutions at the planning stage, which increases the physiology of the method.
Thus, from the above it follows that the claimed method is aesthetic restoration in the implementation ensures the achievement of the technical result consists in the evaluation of the restoration from the point of view of aesthetics and function directly in the oral cavity of the patient prior to the preparation of the teeth, to manufacturing and installation of permanent restoration, to improve the aesthetic results of the restoration, enhancement physiology.
1 shows a view of the front teeth of the upper jaw before the restoration; figure 2 - diagnostic model is the ass-wax, with the preliminary contours of the future restoration; figure 3 - diagnostic wax model, which get the impression from silicon dental impression mass; figure 4 is hardened fitting plastic restoration; figure 5 - results of adjusting the appearance of plastic restorations using flowable light-cured material of the corresponding color; 6 - final result: the finished ceramic design, fixed on restored teeth.
The proposed method esthetic restoration of teeth perform the following way. Receive diagnostic silicone impression from the teeth before restoration. While the teeth to be restored, not dissect. On the basis of a diagnostic impression made working model of plaster, on which a wax model of the desired shape of the restored teeth. With wax models remove silicone impression. Then the surface of the teeth thoroughly clean, and on the inner surface of the silicone impression put isolant. Then a silicone impression fill self-hardening plastic and place it on the restored teeth. After hardening of the plastic silicone impression is removed so that the teeth of the patient remains plastic restoration. The patient demonstrate the future restaurats and teeth. If necessary, perform the adjustment of appearance plastic restoration directly in the oral cavity of the patient. After achieving the desired aesthetic result in the patient's mouth with plastic restoration remove silicone impression on the basis of which by the conventional technology made permanent restoration.
Adjustment of appearance plastic restoration perform or flowable light-cured material of the corresponding color, or mechanically remove excess plastic.
After achieving the desired aesthetic result plastic restoration, if necessary, leave on teeth of a patient for two or three days, after which the plastic restorations in the oral cavity of the patient is removed with a silicone impression.
Permanent restoration can be made of ceramic veneers.
To implement the method can be used samootverjennaya plastic Protemp company 3M; isolant - vaseline; flowable light-cured material Revolution company Kerr.
Immediately after diagnosis, without preparing restored teeth, get your diagnostic impressions for the manufacture of diagnostic models of the maxillary and mandibular dental arches. They are used for the manufacture of a diagnostic model, which for the eat made a wax reproduction of the future-ceramic restorations (Fig.1-3).
Then make a print of the silicone mass from the surface of the wax diagnostic model (figure 3). After that, subjected to the restoration of the teeth are thoroughly cleaned from soft and hard dental deposits, subjected to medical treatment using chlorhexidinseife solution, dried. On the inner surface of the silicone seal is applied to isolant, fill it self-hardening plastic and placed on the prepared teeth directly in the mouth. Allow to harden in 3-5 minutes. In the plastic reproduction is easily separated from the impression and is tightly seated on the teeth (figure 4)
Hardened fitting plastic restoration have minimal excess material with the precision of manufacture, provided that the fluidity of self-hardening plastic.
Then carry out the adjustment of appearance plastic restorations using flowable light-cured material of the respective colors by trial and additives to obtain aesthetic and functional optimum shape and size. To achieve a natural aesthetic effect of brittle plastic restoration corresponding paint give a color cast.
The excess material is removed from the plastic restoration water-cooled diamond boron is m
Plastic cladding after adjustments should look uniform (figure 5).
After following the steps above, the patient and the dentist can evaluate the results of treatment with aesthetic and physiological points of view.
Because the design is firmly fixed on the teeth, if necessary, it can be left on the teeth for a short time (two to three days)to make sure its aesthetics and functionality.
After approval by the patient of the results of the fitting, in the oral cavity of the patient with plastic restoration remove silicone impression, which is made of a diagnostic model, on the basis of which by the conventional technology made permanent restoration.
Begin preparation of teeth directly under certain ceramic design.
Ready all-ceramic restorations are installed on the teeth as they become available on the developed Protocol fixation (6).
1. The way aesthetic dental restoration, in accordance with which the receive diagnostic silicone impression from the teeth to be restored, on the basis of which produce a working model of plaster, on which a wax model of the desired shape of the restored teeth, the future restoration of exhibit PAC is into to manufacture and install in your mouth, characterized in that for obtaining diagnostic silicone impression of the teeth to be restored, not dissect, in addition, after the manufacture of the wax model with the removed silicone impression, then the surface of the teeth thoroughly clean, and on the inner surface of the silicone impression put isolant, and then a silicone impression fill self-hardening plastic and place it on restored teeth after hardening plastic silicone impression is removed so that the teeth of the patient remains plastic restoration, which demonstrate to the patient as a result of a future restoration of the teeth, if necessary, adjusts the appearance of plastic restoration directly in the oral cavity of the patient, then after reaching the desired aesthetic result, in the oral cavity of the patient with plastic restoration remove silicone impression on the basis of which by the conventional technology made permanent restoration.
2. The way aesthetic dental restoration according to claim 1, characterized in that the adjustment of appearance plastic restoration perform or flowable light-cured material of the corresponding color, or mechanically remove excess plastic.
3. The way aesthetic dental restoration according to claim 1, Otley is audica fact, permanent restoration is made of all-ceramic veneers.
4. The way aesthetic dental restoration according to claim 1, characterized in that after reaching the desired aesthetic result plastic restoration is left on the teeth of a patient for two or three days, after which the plastic restorations in the oral cavity of the patient is removed with a silicone impression.
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.
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.
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.