Method of orthodontic treatment of patients with defects of hard teeth tissue
SUBSTANCE: invention relates to medicine and may be used to temporarily replace total and subtotal defects of the crown part of the teeth in cases where it is necessary to install a bracket for orthodontic treatment. Get imprints. Make models. Simulate anatomical form using wax. Positioning and fixing of the orthodontic bracket is performed at the stage of modeling the crown from wax. Braces are installed on the vestibular or oral surface of the tooth. Support area of the bracket is covered with an additional layer of wax, which is replaced by polymerization with plastic. Supporting tooth with wax reproduction of the artificial crown is gypsum plated in a cuvette and placed in boiling water for 10–15 minutes, and then opened. For the production of plastic crowns, plastic is used. Ready-made temporary plastic crown with a bracket installed in it is fixed to the stump of the supporting tooth.
EFFECT: method allows to increase the effectiveness of orthodontic treatment in patients with total and subtotal defects of hard tissues, as well as to prevent the destruction of hard tooth tissues due to the carious process.
1 cl, 6 dwg, 2 ex
SUBSTANCE: method for manufacturing a therapeutic retainer involves taking an impression of a jaw, making working and diagnostic casts, creating a preparation depot, forming and cutting a retainer. Before creating the therapeutic preparation depot, a clinical contour height included into the therapeutic retainer is detected on the working cast with using a parallelometer; the therapeutic retainer is bordered on the working cast: the first border from vestibular and buccal surfaces 2 mm above the transitory fold on the lower jaw and 2 mm below the transitory fold on the upper jaw, avoiding all mucosal cords and frenulums; the second border from the lingual surface is marked along the alveolar process of the lower jaw 1-1.5 mm above the mouth floor or for the upper jaw on the palatal surface is marked 10-15 mm short of the line A. The borders are marked to deposit a therapeutic preparation: on the lower jaw - from the vestibular, buccal and lingual surface from the gingival crest to the transitory fold along the alveolar process within a projection of dental roots or on the upper jaw - from the vestibular, buccal or palatal surfaces from the gingival crest to the transitory fold along the alveolar process within the projection of dental roots. The space for depositing the therapeutic preparation is created so that it stops 1-2 mm short of the border of the therapeutic retainer; between the therapeutic preparation depot borders marked on the cast, a layer 0.5-1 mm thick of a silicone impression compound is placed; the working cast is placed into a vacuum moulder; the cast is crimped with a thermoplast; the therapeutic retainer is cut along the borders marked on the casts; a relief incision is made from the first left molar to the first right molar along the vestibular surface of the therapeutic retainer above the marked clinical contour; the therapeutic retainer is ground and polished.
EFFECT: invention provides ensuring a low risk of deformities by using a single thermoplastic plate with no additional elements introduced, and also promotes maintaining the optimum drug concentration by making the space within the projection of the dental roots.
3 dwg, 1 ex
SUBSTANCE: invention refers to medicine, namely to dental surgery, and is applicable for oral surgeries. A cone-beam computerised oral tomography is performed successively. A skeletal and soft tissue cephalometric points are marked on the created 3D-computer model of skull. A combination thereof enables performing the 3D-cephalometric analysis of bone and soft tissues. A list of cephalometric points includes Basion (Ba) and a number of other standard points. Three skeletal points in the right part of the skull are additionally included: Tuber (Tub) R is a point within a joint of a right maxillary tuberosity and a pterygoid process at 1 mm above a palatal root of the last (if the molar is absent, the most posterior point within a maxillary sinus floor is taken); Alare (Al) R is the most lateral point within a nasal aperture on the right from the point ANS; Palatinum (Pal) R is a point within an anterior wall of a right aperture of greater palatine canal on the inferior surface of a horizontal plate of palatine bone. Three skeletal points in the left portion of the skull similar to those stated above are also included into the list of cephalometric points.
EFFECT: method enables simplifying and reducing the labour input of planning the orthognatic surgical operation, increasing the quality of the operation.
2 dwg, 2 tbl, 3 ex
SUBSTANCE: upper jaw base comprises a saw-cut dividing the base on a front and back sectors coupled by a sector jack-screw. The bases are provided with occlusal onlays on side teeth; the upper jaw base has the onlay on all the premolars, whereas the lower jaw base - on the second premolars and molars; there are parallel adjoining inclination planes extending bottom up and backwards. The saw-cut in the upper jaw base is trapezoid and starts at the level of a distal surface of upper pointed teeth and extends backwards or to the centre of the base and ends with the cross portion at the level of the first premolars. The front and back sectors of the base are coupled by the sector jack-screw perpendicular to the central upper incisors. Besides, the upper jaw base comprises braced lip bandages armed in its back sector. The lower jaw base has a vestibular arch.
EFFECT: more effective treatment of gnatic mesial occlusion in adolescents by accelerated front deflection of the front segment of the upper jaw, more effective correction of the reverse cross occlusion.
SUBSTANCE: jack screw palatal actuation wrench comprises a working section and a ring-shaped holding element at the proximal end. The working section is 40° curved at a distance equal to a bolt head diameter of a jack lock. The working section is 180° curved once more at 16-18 mm from the first curve towards an angle of the first curve. At the mid-distance between the first and second curve, the working section is 90° curved to a wrench axis. The proximal end of the curved wrench is ring-shaped in a plane perpendicular to the wrench axis.
EFFECT: jack screw actuation wrench enables avoiding the hard palate mucosa injuries and actuating the jack lock from three points when the patient opens his/her mouth in the physiological environment.
SUBSTANCE: invention refers to medicine, dentistry, namely to orthodontics, and aims at making a sequence of trays for normalising a position of the upper jaw fragments and alveolar process in children suffering the cleft lip and palate. The upper jaw impression is recorded. A cast model is made and scanned in a computer tomography scanner; a digital copy of the model is reproduced by means of 3D modelling software application; the jaw fragment is displaced successively at an increment of no more than 2 mm. This creates a sequence of 6-12 digital models with successive displacement of the fragment. The information is stored on any electronic media in any 3D printable format. The models printed in 3D printer are used to make the sequential trays.
EFFECT: by making the 3D models and using them for making the correction trays in compliance with the pre-set parameters, the method enables simplifying the laboratory stage and increasing the displacement accuracy, thereby improving the quality of treatment.
SUBSTANCE: ultrasonic wave transmission velocity is measured within the osseous inter-root septums by means of intra-oral cone-shaped sensors fixed in a silicone impression. The sensors are placed in an intersection point of the mid-length of the inter-root septum and a conditional line drawn on an upper jaw 3mm above, and on a lower jaw 3mm below a gingival line.
EFFECT: method enables obtaining the objective data of the risk of recurrences following the orthodontic treatment by the use of the cone-shaped sensors positioned directly in the oral cavity.
3 dwg, 2 tbl, 2 ex
SUBSTANCE: invention refers to medicine and aims at generating high respiratory resistance. An individual intraoral respiratory training system in the form of a tray covers the dental arch, the hard palate and the vestibular clivus on the upper jaw and dental cusps and teeth cutting edges on the lower jaw. The training system is made of a polymer; it covers the vestibular clivuses of the upper jaw at 2 mm from the dental cusp. The training system covers the dental arch to the second molars of the upper and lower jaws, while a distal border of the palatal portion of the training system is found within the range from a line drawn from mesial surfaces of the first premolars of the upper jaw, to a line drawn between distal surfaces of the first molars of the upper jaw. The training system has a vestibular surface 2-3.5 mm thick and an occlusal surface 3-5 mm thick.
EFFECT: invention result consists in the fact that the individual intraoral respiratory training system with the modified thickened palatal portion leaves the lower jaw motions unblocked and can be used during trainings aiming at improving the sportsmen's functional efficiency by means of resistive-respiratory loads, as well as more complete adaptation to protective trays.
4 cl, 6 dwg
SUBSTANCE: training device is made of a polymer material and shaped as a tray covering the dental arch and the vestibular clivus on the upper jaw, and partially the dental arch on the lower jaw. The training device covers the vestibular clivus of the upper jaw at 2 mm from the gingival groove, as well as the mandibular tuberosity and teeth cutting edges. The training device covers the dental arches of the upper and lower jaws to second molars, while a distal border of the palatal portion of the training device is attached within the area from a line drawn between mesial surfaces of the first pre-molars of the upper jaw, to a line drawn between distal surfaces of the first molars of the upper jaw. The palatal portion of the training device represents a partition mounted at the same level with an occlusion surface of the training device covering the dental arches; between the partition and the hard palate, there is an empty space, wherein air can penetrate when the patient breathes. The training device has the vestibular surface 2-3.5 mm thick and the occlusion surface 3-5 mm thick.
EFFECT: training device does not block the lower jaw motions and can be used for workouts aiming at increasing the sportsmen's functional qualification by means of resistive-respiratory loads, more complete adaptation to protective trays.
2 cl, 4 dwg
SUBSTANCE: group of inventions refers to medicine, namely to orthodontia, dental orthopaedics and surgery, and aims at the apical correction of the dental root position in orthopaedic treatment, or for surgical or orthopaedic indications for the correction of the dental root position within one dental arch. A method for the correction of dentofacial anomalies is based on the staged dental migration by elastic strain energy with using a number of elastic corrective trays meeting each dental reposition from the initial position to the required position; the strain energy is applied to an activator attached along the crown portion of the tooth covering the marginal edge of the gum.
EFFECT: by concentrating and activating the effect of the corrective strain energy of the number of the corrective trays, the inventions enable providing higher effectiveness and accuracy of the correction of the dental position.
5 cl, 4 dwg
SUBSTANCE: invention is applicable for treating dentofacial disorders in children. The bone tissue growth is stimulated within the cleft alveolar process and hard palate with using the M.A.Postnikov's device and braces for 2-2.5 years in patients of 10-15 years old suffering from anterior occlusion complicated by the cleft lip, alveolar process, soft and hard palate, after surgery for the cleft lip, alveolar process and soft and hard palate repair. The maxillary dental arch is simultaneously enlarged and elongated. A dentofacial disorder is repaired. Upper incisors are brought out of a palatal position into an orthognathic occlusion. At the patient's request, an aesthetic surgery on the vermillion border and within the hard and soft palate is performed.
EFFECT: method enables correcting the anterior bite in a combination with permanent teeth retention, and the space deficiency in the patients suffering from the cleft lip, alveolar process and hard and soft palate, eliminating the dentofacial disorder, creating space for impacted eye teeth, improving facial aesthetics.
8 dwg, 1 ex
SUBSTANCE: opening of a carious cavity, ablation of overhanging enamel edges on the entire circumference, necrectomy and drug treatment with a 0.06% chlorhexidine solution are performed. The preparation "Lemifaren" is applied on walls and bottom of the carious cavity in a uniform 1 mm thick layer, which is left for 1 day under temporary filling. After the removal of the preparation irradiation in a pulse mode with the power of 5 W and frequency of 2000-3000 Hz is carried out for 5 min with the application of the laser apparatus ALST-01. After that, the cavity is restored with an account of functional and aesthetic parameters of the particular tooth.
EFFECT: effective treatment of deep caries prevents caries recurrences and pulp inflammation.
SUBSTANCE: invention refers to medicine, namely to dentistry, and is applicable in temporary tooth restoration with anaesthetic support. A standard steel crown is chosen with its edges corrected and turned down prior to the anaesthetic support with using a silicone plate made of a high-precision low viscosity impression compound. That is followed by the anaesthetic support. The latter involves the tooth preparation, corner rounding, preparation quality check, final crown edge turndown, crown cementing, excess cement removal, and final crown quality check. The high-precision impression compound is an s-silicone or an a-silicone impression material.
EFFECT: by reducing the number of actions accompanying the anaesthetic support, the method enables increasing the quality and clinical effectiveness.
3 cl, 5 dwg
SUBSTANCE: method includes the preparation of a carious cavity, opening the tooth cavity, creation of an access to root canals, extension of their orifice. Removal of a decayed material from the root canals and their drug treatment are carried out. After that, performed are: wide opening of the apical tooth orifice, mechanical and drug removal of periapical pathological exudative formations in the focus of periapical inflammation through the root canal. Before filling the canal with a filling material the gel "Lamifaren" is introduced into the focus of periapical destruction. Such introduction is performed three times after a day under temporary stopping. The gel "Lamifaren" is introduced inside in a dose of 50 g 2 times per day for 30 days.
EFFECT: application of the invention accelerates bone tissue regeneration due to the active release of an active substance calcium alginate, provides stable remission due to local and systemic detoxifying effect.
SUBSTANCE: functional and morphological nature of dental defects is assessed to prescribe the treatment. If the diagnostic findings show reducing the grinding surface enamel, preserving a contact point and grinding surface dentine with 1 mm maximum crown length loss, preserving the central fissure enamel and tooth viability, the treatment is supposed to include preventive measures. If observing the grinding surface enamel lost in the antagonist contact areas, the preserved contact point, the minimally injured grinding surface dentine with 1 mm maximum crown length loss, the lost central fissure enamel, however the preserved tooth viability, direct composite restoration is presented as the treatment. If observing the lost grinding surface enamel lost, the preserved contact point, the prominently injured grinding surface dentine with 2 mm maximum crown length loss, the lost central fissure enamel, however the preserved tooth viability, indirect ceramic or composite restoration is presented as the treatment. If observing the lost grinding surface enamel lost, the preserved contact point, the significantly injured grinding surface dentine with more than 2 mm maximum crown length loss, the lost central fissure enamel, however the preserved tooth viability, indirect ceramic restoration is presented as the treatment. If observing the lost grinding surface enamel lost with no contact point preserved, the significantly injured grinding surface dentine with more than 3 mm maximum crown length loss, the lost central fissure enamel and tooth viability, root canal treatment followed by tooth stump restoration and total teeth replacement is presented as the treatment. The process of buccal teeth abrasiveness has five stages each of which has a specific characteristics and specific therapeutic alternatives.
EFFECT: by assessing a degree of buccal teeth abrasiveness, the invention enables selecting a specific therapeutic option, assessing the prognosis for the disease and deciding on the onset of the disease.
1 dwg, 1 tbl, 3 ex
SUBSTANCE: method comprises temporary fixation of tooth fragments with aluminium bronze ligature, cavity preparation, instrumental and antiseptic treatment, formation of lock passages for a lock inlay and final fixation of the bone fragments by means of the lock inlay with two legs and tooth crown restoration. The lock passages for the lock inlay represent through holes in the fragments of the tooth crown, wherein the lock inlay is placed in the form of a waved shape-memory NiTi wire section 1.5-2.0 mm in diameter, 5-10 mm long having legs formed by ends 2-3 mm long curved at an angle of 90°-100°; before being attached to the fragment walls of the tooth crown, the lock inlay is cooled down by means of a cryoinjector; the lock inlay with its legs is unbent in a straight line and inserted into the drilled holes up to leg bends.
EFFECT: method is simple and high-effective treatment of crown-radicular fractures of multi-rooted teeth.
SUBSTANCE: optical parameters of a restored tooth. An enamel bed is formed in accordance with optically significant anatomical areas of the enamel: palatinal wall is formed of enamel mass, which is two tones lighter than a base; a superior posterior-aproximal wall is formed of the same enamel mass that is used for the palatinal wall; inferior posterior-aproximal and palatinal walls of a cutting edge are made of enamel mass having tone C and intensity equal to that of the primary enamel mass; a superior anterior-aproximal wall is formed of the enamel mass, which is one tone lighter than the base; inferior anterior-aproximal and vestibular walls of the cutting edge are made of the enamel mass having tone T; an immature enamel layer has tones W; the vestibular wall is formed of the enamel wall of primary tone.
EFFECT: method enables increasing the quality of colour transfer and reducing the number of poor-quality restorations.
1 tbl, 7 dwg
SUBSTANCE: composites are mechanically activated by vibration action on a portion of the composite covering a defect. The vibration action of the portion of the composite is pursued at a vibration frequency up to 1,000 Hz generated by a device comprising at least one working portion for applying the composite on the defect rigidly attached to a handle in the form of a tubular body provided with an actuator button for actuating a battery power supply electrically connected to a micro motor generating vibrations which are transmitted through the working portion onto the composite layer by spreading over the defect surface and ensuring superficial plastic deformation at the same time.
EFFECT: by means of the controlled effect of a restoration instrument on the surface of the applied composite providing maximum air extrusion from the composite, the inventions enable forming the solid one-piece composite structure and effective marginal fit of the composite to solid dental tissues, as well as reducing a probability of complications and prolonging the operational life of the composite restoration.
5 cl, 2 tbl
SUBSTANCE: method involves preparing a carious cavity, conducting a medically induced processing of the dental solid tissues and applying a therapeutic liner and stopping a permanent filling. The medically induced processing is conducted with the use of butol. Upon completion of the processing, the therapeutic liner of a mixture of zinc-sulphate cement with butol is applied.
EFFECT: adequate anti-inflammatory action and optimum diffusion of the therapeutic agent into the solid dental tissues by the uniform butol distribution in the specified cement, which leaves the antimicrobial effect of the preparation undistorted.
SUBSTANCE: invention refers to medicine, particularly to dental therapy, and aims at using for correcting photocomposite restorations. Photocomposite surface and hard tooth tissues are exposed to air-abrasive processing by the low-abrasive cleansing glycine powder Clinpro Prophy Powder. Air Flow sandblast tip is used. Tip cannula is inclined at no more than 30° to the processed surface to enlarge a contact area of the abrasive flow with the surface and reducing the exposure time.
EFFECT: by restoration based on minimal intervention, method enables reducing the time of treatment, providing high adhesive values between old and new composite and preserving hard tooth tissues as much as possible.
SUBSTANCE: invention relates to medical instruments and can be used for treatment of complicated caries. An endodontic instrument for a root channel formation contains an apical part for holding and a cone-like working part with cutting edges. To reduce an excessive removal of the root substance and provide an adequacy of the formed channel to its anatomical configuration the endodontic instrument is made on the basis of an alloy of grade TN-20, possessing a superplasticity effect.
EFFECT: reduction of an excessive removal of the root substance and provision of an adequacy of the formed channel.
FIELD: medical engineering.
SUBSTANCE: method involves placing wire network reinforcement pin in composite material medium applicable for restoring crown tooth part to enable solid connection of retained tooth part and one under restoration as well as additional restored tooth reinforcement to take place. The pin has U-shaped part for reinforcing crown tooth part under restoration and a part used for fixing it that is manufactured as a bundle of free longitudinal wire ends of metal net and surface counterpart surface of the cavity formed in base of tooth root and retained crown tooth part.
EFFECT: high strength under chewing loads applied; retained anatomical natural tooth shape and appearance.