Method for producing combined fixed dental prosthesis

FIELD: medicine.

SUBSTANCE: method involves modeling dental prosthesis carcass, fabricating the metal carcass by applying casting method and its surface coating with ceramic and plastic materials. Reinforcing materials are modeled with 2-3 mini-pins in modeling dental prosthesis carcass. The mini-pins are moulded with the metal carcass and then arranged in the bulk of coating material layer between vestibular and palatine surface. Mini-pin lengths are equal to 0.5-0.7 times the distance from the metal carcass to the coated dental prosthesis edge.

EFFECT: avoided coating material chipping on cutting edges; improved esthetic results; prolonged service life.

2 dwg

 

The invention relates to medicine, namely prosthetic dentistry, and for manufacturing combined (lined aesthetic materials) fixed dentures.

The topical question of prosthetic dentistry is the prevention of chips cladding layer combined dentures (metal and metal-ceramic) in the area of the cutting edge of the upper front teeth. The chips in this area of the dentition occur despite the use of the most modern adhesive systems (communication cladding layer with metal). Moreover, chips are observed with exposure of the metal frame and without exposure of the metal frame. It should be noted that the integrity of the upper four incisors, which are the aesthetic center of dentition, seems to be the most important, and its violation is psychologically difficult for experienced patients.

A known method of manufacturing a non-removable crowns (U.S. Pat. No. 2238695 of the Russian Federation, IPC 7 And 61 With 5/08 "Method of manufacturing a wire-composite crowns", bull. No. 30, 2004), in which to prevent chipping and enhance the aesthetics of the prosthesis forming a skeleton crowns exercise of gilded metal mesh, followed by the application of cladding material on pre-coated masking agent the frame. During the preparation of the stump of the tooth shape retention elements in the form of grooves. The disadvantage of this method is that the grid frame can be used mainly in the manufacture of single crowns, as they do not have sufficient strength.

There is a method of manufacturing a non-removable dental prosthesis (U.S. Pat. No. 2123820 of the Russian Federation, IPC 6 And 61 With 13/00 "non-Removable dental prosthesis and method of manufacturing", bull. No. 36, 1998), in which the metal frame by masking the two ground layers and fastening of facing of plastic to produce a porous porcelain layer through a layer of composite. However, it is not possible to avoid chips as durable combination of metal frame and cladding material has little effect on the occurrence of chipping: chipping depends on the ratio of the strength of the cladding material and the functional load on this area.

The closest, according to the authors, analogue (prototype) is a method of manufacturing a molded composite crowns on Mathe (Enguli "Fixed prostheses", Nizhny Novgorod, 1998, p.260-267). In a metal frame combined crowns on Mathe warning chipping of the cutting edge is provided by a metallic protective film", located on the palatal side. The functional load of the lower incisors when naduzywany food is aimed at the "protection of the Sabbath." and chips cladding layer in the region of the cutting edge no. However, this metal "protective film" comes almost to the cutting edge and deprives an artificial crown transparent zone, resulting often bared its edge, and a dental prosthesis loses aesthetic appearance.

The main task to be solved by the invention, is to prevent chipping cladding layer and the preservation of the aesthetic appearance of the combined denture during the whole service life.

The proposed method for the manufacture of a combined non-removable dental prosthesis includes a modeling framework denture, obtaining a metal frame molding and ceramic or plastic materials, in process modeling framework denture in the area of cutting edge model of reinforcing elements in the form of 2-3 ministerto, which is then cast with a metal frame and further features in the thickness of the cladding layer in the middle between the vestibular and palatal surfaces, and the length of ministerto is 0.5-0.7 of the distance from the metal frame to the edge of the lined denture.

When implementing the method according to the casts of the prints prepariruetsya teeth are made collapsible model, wax model carcassing denture taking into account the thickness of the cladding material. At the same time simulate the reinforcing elements in the form of 2-3 ministerto on each crown prosthesis. Metal frame with reinforcing elements produced by the casting method, a pin is stuck it in the mouth of the patient and revet polymer or ceramic facing material so that ministiy was in the thickness of the cladding layer in the middle between the vestibular and palatal surfaces. Length ministerto should not exceed 0.5-0.7 distance from the metal frame to the edge of the lined denture.

In the proposed method, the reinforcing elements are modeled and cast simultaneously with frame and non-removable dental prosthesis that allows you to get a solid frame high strength.

The occurrence of chipping of the cutting edge of artificial crowns within a plastic or ceramic layer due to the presence of functional loads on this area when biodynamics dentitions during the act of mastication. During the chewing function, especially biting hard food, when the lateral load on the cutting edge, the distance between the metal frame and the cutting edge forms a lever working on the destruction of the lining in this critical area. Lateral load on the cutting edge of the upper incisors due to the fact that when orthognathic bite the cutting edge of the upper front teeth is inclined forward and the maximum load during biting of food occurs when compression of the cutting edge of the upper incisors with a cutting edge of the lower incisors. The vector force when biting food pushes the cutting edge of the upper teeth forward in the direction of the upper lip, this leads to chipping of the cutting edge. Reinforcement of the critical zone (the cutting edge) of the metal elements (ministerthe) solid frame of the dental prosthesis on the proposed method makes it possible to prevent the chips facing layer. The number of ministerto one crown prosthesis (two or three) depends on the width of the crown. Ministery set so that they are further housed in the thickness of the cladding layer in the middle between the vestibular and palatal surfaces. Their length may be from 0.5 to 0.7 of the distance from the metal frame to the edge of the artificial crown. Ministery have in the dentinal layer of polymer mass with minimal transparency. This allows you to save translucent enamel layer of the cutting edge that provides the aesthetics of artificial crowns.

The proposed method for the manufacture of a combined non-removable dental prosthesis can reduce the lever working on the occurrence of chips, 1.5-1.7 times without compromising aesthetics combined prosthesis.

Figure 1 presents a General view of a fragment of the combined non-removable dental prosthesis. Crown dental prosthesis 2 comprises a metal frame 1 with two Armey the respective elements in the form of ministerto 2, opaque dentinal layer of cladding material 3 and the translucent cladding layer of the cutting edge 4.

Example: the proposed method was made combined fixed dental prosthesis in the absence of the patient two front incisors on the upper jaw. After preparation of the abutment teeth using polyphenylsiloxane mass produced prints. The prints cast plaster model of the dentition. The Central occlusion were determined using wax Nakonechnyj templates. The modeling framework combined fixed dental prosthesis is made from solid wax at the same time with the modeling of reinforcing elements in the form of ministerto taking into account the thickness of the cladding layer, which is 2 mm On each crown was provided by the presence of 2 ministerto. Length ministerto 0.5 distance from the frame to the edge of the coated prosthesis. The frame of the dental prosthesis cast from dental chromacolour alloy on existing technology. After fitting the prosthesis in the oral cavity of the patient and the appropriate treatment to produce the polymer cladding material brand "Jasti Pacto" company "ATI" (USA). Ministery have in the dentinal layer of polymer mass with minimal transparency. This allows you to save translucent enamel layer of the cutting cu who I am. After finishing and polishing of denture it is fixed in the oral cavity of the patient.

A method of manufacturing a combined non-removable dental prosthesis, including the modeling framework denture, obtaining a metal frame molding and ceramic and plastic materials, characterized in that the modeling framework of the denture in the area of cutting edge model of reinforcing elements in the form of 2-3 ministerto, which is then cast with a metal frame and further features in the thickness of the cladding layer in the middle between the vestibular and palatal surfaces, and the length of ministerto is 0.5-0.7 of the distance from the metal frame to the edge of the lined denture.



 

Same patents:

FIELD: medicine.

SUBSTANCE: method involves forming two notches on each abutment tooth oral surface sides, notch depth not exceeding enamel layer thickness. Prosthesis carcass is formed in patient oral cavity built from flattened parallel wire beams fixed in advance in the notches and reinforcing gold-plated net rigidly connected to carrying part of the beams by means of metal threads. The carrying part is shaped to match the dental row defect to be substituted in a plane at the beam fixation level. The net is shaped as failing tooth crown part. The crown part is formed using composite materials in accordance with anatomical tooth shape and specific anatomic features of dental row under repair.

EFFECT: high accuracy, strength and esthetic quality of prosthesis.

FIELD: medicine, orthopedic stomatology.

SUBSTANCE: the present innovation deals with adhesive fixation of retention elements with intermediate part upon supporting teeth. On defect-confining teeth one should prepare cavities for retention elements, temporarily close cavities to model intermediate part with supporting elements on an imprint-made gypsum model. The shape of intermediate part is a truncated cone at axial angle of 3°, bottom diameter and height being correspondent to an absent tooth, diameter of the upper area of a cone corresponds to 2.5 mm, and connective supporting elements should be designed as rectangular girders of 1.5 mm width, 2 mm height, at a right step in its lower part of 0.5 mm width and 0.2 mm thickness. The innovation provides minimally invasive dental preparing at simultaneous removal of carious tissues.

EFFECT: higher efficiency.

1 cl, 3 dwg, 1 ex

FIELD: medical engineering.

SUBSTANCE: method involves producing two horizontal grooves on oral surfaces of each bearing tooth becoming vertical grooves on opposite contact surfaces of the bearing teeth. Groove depth is not larger than enamel thickness. Prosthesis carcass is formed in patient oral cavity comprising parallel beams preliminarily mounted in the grooves and manufactured from flattened wires, and porous plate rigidly attached to the bearing beams part by means of metal threads and additionally fixed in vertical grooves of the bearing teeth. The beams and plate are manufactured from titanium or titanium nickelide. Rest and bearing beam portions are mated as stiffening ribs. Shape is given to plate in correspondence to crown tooth part outlines in the plane the plate is placed. The crown part is formed with composite materials in accordance to anatomical tooth shape and anatomical peculiarities of dental row under reconstruction.

EFFECT: long service life; high esthetic quality.

3 dwg

FIELD: medicine.

SUBSTANCE: method involves forming supporting platforms on supporting teeth for fixing bridge prosthesis beams and repairing supporting teeth crown parts and crowns of teeth under substitution corresponding to their anatomical shape. The supporting platform having completely lacking crown portion is formed at the level of crown part equator by filling cavity layer-by-layer with microfilled composite material, the cavity being built by walls reinforced with gold-plated metal net and restored in advance using macrofilled composite material to the tubercles level, and by producing slit on aproximal wall surface on the same side with the defect. The supporting platform is formed on tooth having partially lacking crown portion as grooves produced at the equator level on vestibular and oral crown part surface restored in advance using macrofilled composite material and reinforced with net carcass fixed on bearing tooth stump. Supporting beam parts are shaped to conform with the shape of the supporting platforms contact surfaces and grooves shape. Gold-plated metal net is mounted on bearing parts of the beams. The net is preliminarily given M-shaped form and the beams are additionally attached to the beams and the beams are fixed to each other using thin metal threads. The grooves are as deep as the net carcass location depth.

EFFECT: high strength, reliability, prolonged service life; restored dental row integrity.

FIELD: medicine.

SUBSTANCE: method involves forming grooves along supporting teeth equator line on the side of oral and aproximal surfaces, respectively for fixing bridge prosthesis beams with prosthesis carcass being formed next to it and lateral teeth crowns being repaired. The carcass is built by fixing gold-plated metal net on carrying beam part. The net is preliminarily given M-shaped form and the beams are additionally fixed to each other with thin metal threads. The net is set with its free ends turned towards gingiva and crowns are formed with composite materials corresponding to anatomical shape of teeth under substitution and anatomical properties of the dental row beginning with forming lavage space.

EFFECT: high strength, reliability, prolonged service life and improved esthetic results in removing lateral teeth defects.

FIELD: medicine.

SUBSTANCE: method involves forming three horizontal and vertical grooves on the side of oral and aproximal surfaces of each of the supporting teeth, building bridge prosthesis carcass from rectangular gold-coated metal net fixable in the horizontal grooves by means of three supporting members manufactured from longitudinal wires of the net preliminarily prepared on its opposite sides and polypropylene set fixable in the vertical grooves and additionally attached to the metal net with thin metal threads and sequentially forming crown portion of the tooth with composite materials corresponding to its anatomical shape, gold-plated metal net and polypropylene set reinforced on oral and vestibular surface, respectively.

EFFECT: high strength, reliability and flexibility of repaired dental row; reduced risk of traumatic complications; accelerated frontal tooth substitution process.

FIELD: medical engineering.

SUBSTANCE: device has beam for fixing artificial denture, cramp iron and bracket. The cramp iron is connected to the beam in a way allowing its arrangement on oral surface of abutment tooth. The bracket is set as cantilever on beam edge to be placed in longitudinal slot of abutment tooth that is produced in chewing side of the abutment tooth inclined to oral surface. Longitudinal slot bottom is rounded in cross-section. Longitudinal slot walls are smoothly rounded in cross-section to meet chewing surface of the abutment tooth. At least a part of bracket is manufactured to fit longitudinal slot bottom in its cross-section.

EFFECT: improved features insetting removable prosthesis; provided natural chewing pressure transfer upon abutment tooth.

4cl, 3 dwg

FIELD: medical engineering.

SUBSTANCE: method involves cleaning abutment teeth from deposit using diamond drill. Saw cuts are made in the abutment teeth in parallel to dental axis. The cuts are treated with acid and adhesive system and filled with fluid composite material. Glass fiber material is cut in advance in strips and set into the saw cuts arranging directivity vector in perpendicular to dental axis building in this way fastening system from fiber glass where oppositely directed fibers are interwoven with each other. Then the fastening system is filled with the fluid composite material or resin. Stump is repaired with condensed composite. Final prosthesis modeling is carried out using micro-hybrid material. Post-bonding is carried out using arbitrary protector material.

EFFECT: high retention capability; uniform chewing load distribution.

3 cl, 3 dwg

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.

The invention relates to medicine, where in the dental practice orthopedic prostheses bridge design

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 cleaning abutment teeth from deposit using diamond drill. Saw cuts are made in the abutment teeth in parallel to dental axis. The cuts are treated with acid and adhesive system and filled with fluid composite material. Glass fiber material is cut in advance in strips and set into the saw cuts arranging directivity vector in perpendicular to dental axis building in this way fastening system from fiber glass where oppositely directed fibers are interwoven with each other. Then the fastening system is filled with the fluid composite material or resin. Stump is repaired with condensed composite. Final prosthesis modeling is carried out using micro-hybrid material. Post-bonding is carried out using arbitrary protector material.

EFFECT: high retention capability; uniform chewing load distribution.

3 cl, 3 dwg

FIELD: medical engineering.

SUBSTANCE: device has beam for fixing artificial denture, cramp iron and bracket. The cramp iron is connected to the beam in a way allowing its arrangement on oral surface of abutment tooth. The bracket is set as cantilever on beam edge to be placed in longitudinal slot of abutment tooth that is produced in chewing side of the abutment tooth inclined to oral surface. Longitudinal slot bottom is rounded in cross-section. Longitudinal slot walls are smoothly rounded in cross-section to meet chewing surface of the abutment tooth. At least a part of bracket is manufactured to fit longitudinal slot bottom in its cross-section.

EFFECT: improved features insetting removable prosthesis; provided natural chewing pressure transfer upon abutment tooth.

4cl, 3 dwg

FIELD: medicine.

SUBSTANCE: method involves forming three horizontal and vertical grooves on the side of oral and aproximal surfaces of each of the supporting teeth, building bridge prosthesis carcass from rectangular gold-coated metal net fixable in the horizontal grooves by means of three supporting members manufactured from longitudinal wires of the net preliminarily prepared on its opposite sides and polypropylene set fixable in the vertical grooves and additionally attached to the metal net with thin metal threads and sequentially forming crown portion of the tooth with composite materials corresponding to its anatomical shape, gold-plated metal net and polypropylene set reinforced on oral and vestibular surface, respectively.

EFFECT: high strength, reliability and flexibility of repaired dental row; reduced risk of traumatic complications; accelerated frontal tooth substitution process.

FIELD: medicine.

SUBSTANCE: method involves forming grooves along supporting teeth equator line on the side of oral and aproximal surfaces, respectively for fixing bridge prosthesis beams with prosthesis carcass being formed next to it and lateral teeth crowns being repaired. The carcass is built by fixing gold-plated metal net on carrying beam part. The net is preliminarily given M-shaped form and the beams are additionally fixed to each other with thin metal threads. The net is set with its free ends turned towards gingiva and crowns are formed with composite materials corresponding to anatomical shape of teeth under substitution and anatomical properties of the dental row beginning with forming lavage space.

EFFECT: high strength, reliability, prolonged service life and improved esthetic results in removing lateral teeth defects.

FIELD: medicine.

SUBSTANCE: method involves forming supporting platforms on supporting teeth for fixing bridge prosthesis beams and repairing supporting teeth crown parts and crowns of teeth under substitution corresponding to their anatomical shape. The supporting platform having completely lacking crown portion is formed at the level of crown part equator by filling cavity layer-by-layer with microfilled composite material, the cavity being built by walls reinforced with gold-plated metal net and restored in advance using macrofilled composite material to the tubercles level, and by producing slit on aproximal wall surface on the same side with the defect. The supporting platform is formed on tooth having partially lacking crown portion as grooves produced at the equator level on vestibular and oral crown part surface restored in advance using macrofilled composite material and reinforced with net carcass fixed on bearing tooth stump. Supporting beam parts are shaped to conform with the shape of the supporting platforms contact surfaces and grooves shape. Gold-plated metal net is mounted on bearing parts of the beams. The net is preliminarily given M-shaped form and the beams are additionally attached to the beams and the beams are fixed to each other using thin metal threads. The grooves are as deep as the net carcass location depth.

EFFECT: high strength, reliability, prolonged service life; restored dental row integrity.

FIELD: medical engineering.

SUBSTANCE: method involves producing two horizontal grooves on oral surfaces of each bearing tooth becoming vertical grooves on opposite contact surfaces of the bearing teeth. Groove depth is not larger than enamel thickness. Prosthesis carcass is formed in patient oral cavity comprising parallel beams preliminarily mounted in the grooves and manufactured from flattened wires, and porous plate rigidly attached to the bearing beams part by means of metal threads and additionally fixed in vertical grooves of the bearing teeth. The beams and plate are manufactured from titanium or titanium nickelide. Rest and bearing beam portions are mated as stiffening ribs. Shape is given to plate in correspondence to crown tooth part outlines in the plane the plate is placed. The crown part is formed with composite materials in accordance to anatomical tooth shape and anatomical peculiarities of dental row under reconstruction.

EFFECT: long service life; high esthetic quality.

3 dwg

FIELD: medicine, orthopedic stomatology.

SUBSTANCE: the present innovation deals with adhesive fixation of retention elements with intermediate part upon supporting teeth. On defect-confining teeth one should prepare cavities for retention elements, temporarily close cavities to model intermediate part with supporting elements on an imprint-made gypsum model. The shape of intermediate part is a truncated cone at axial angle of 3°, bottom diameter and height being correspondent to an absent tooth, diameter of the upper area of a cone corresponds to 2.5 mm, and connective supporting elements should be designed as rectangular girders of 1.5 mm width, 2 mm height, at a right step in its lower part of 0.5 mm width and 0.2 mm thickness. The innovation provides minimally invasive dental preparing at simultaneous removal of carious tissues.

EFFECT: higher efficiency.

1 cl, 3 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: method involves forming two notches on each abutment tooth oral surface sides, notch depth not exceeding enamel layer thickness. Prosthesis carcass is formed in patient oral cavity built from flattened parallel wire beams fixed in advance in the notches and reinforcing gold-plated net rigidly connected to carrying part of the beams by means of metal threads. The carrying part is shaped to match the dental row defect to be substituted in a plane at the beam fixation level. The net is shaped as failing tooth crown part. The crown part is formed using composite materials in accordance with anatomical tooth shape and specific anatomic features of dental row under repair.

EFFECT: high accuracy, strength and esthetic quality of prosthesis.

FIELD: medicine.

SUBSTANCE: method involves modeling dental prosthesis carcass, fabricating the metal carcass by applying casting method and its surface coating with ceramic and plastic materials. Reinforcing materials are modeled with 2-3 mini-pins in modeling dental prosthesis carcass. The mini-pins are moulded with the metal carcass and then arranged in the bulk of coating material layer between vestibular and palatine surface. Mini-pin lengths are equal to 0.5-0.7 times the distance from the metal carcass to the coated dental prosthesis edge.

EFFECT: avoided coating material chipping on cutting edges; improved esthetic results; prolonged service life.

2 dwg

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