Complete removable dental maxillary prosthesis

FIELD: medical engineering.

SUBSTANCE: device has double layer base and artificial teeth. Base layer, facing prosthesis bed having external edges positioned in active movable part of mucous membrane in making engagement to transition vault fold enveloping upper lip frenulum and buccal folds with closing valve being formed, is manufactured from superelastic titanium nickelide. The base layer compensating alveolar process bone tissue atrophy is manufactured from acrylic plastic.

EFFECT: accelerated adaptation period; improved strength characteristics.

19 dwg

 

The invention relates to medicine, namely to prosthetic dentistry and can be used for prosthetics patients with complete absence of teeth in the upper jaw.

Known dental prosthesis containing a two-layer basis, consisting of soft and hard layers, the peripheral edge of the soft layer of the prosthesis is made speakers for the solid layer, curved according to the shape of the transition folds and performed with variable thickness with decreasing towards the edge (SU 1554906 A1, 07.04.1990).

Known prosthesis has the following disadvantages: the thickness of the base made of acrylic plastic 2.5 mm and more, because of the significant mass causes inconvenience to the patient and increases the period of adaptation, in addition, the perception of thermal stimuli, as the basis of the prosthesis is made of a material that conducts heat poorly and insufficient durability of the prosthesis due to the fragility of the plastic reduces the period of its use, and the lack of biomechanical compatibility with body tissues at the base of the plastic does not contribute to the uniform distribution of chewing pressure on orthopedic bed that leads to its atrophy.

The objective of the proposed full removable denture in the upper jaw is shorter time to adapt, improve strength properties, reduction processes atrophy tissue prosthetic bed due to RA the number distribution of chewing pressure.

This object is achieved in that a complete removable dental prosthesis, consisting of a double-layer base and artificial teeth, what is new is that the layer basis, converted to a prosthetic socket, the outer edges of which are located in the rapidly-moving part of the mucous membrane, contacting the dome transition folds, envelopes of the frenulum lip and cheek folds with the formation of the closing valve, made of super-elastic Nickel-titanium, and a layer basis, compensating bone resorption of the alveolar ridge, made of acrylic plastic.

Figure 1 shows a cross-section of the prosthesis.

Full removable denture in the upper jaw contains a two-layer basis, consisting of a super-elastic layer 1 made of Nickel-titanium, layer 2 made of acrylic plastic and artificial teeth 3. The outer edges of the super-elastic layer is located in the rapidly-moving part of the mucous membrane, contacting the dome transition folds, bends around the frenulum lip and cheek folds with the formation of the closing valve 4.

The prosthesis is made as follows.

Using individual spoons receive functionally the suction seal, made a working model of a high-strength gypsum, mark border basis, duplicate working model and make a copy of the refractory mass, m will delirous wax reproduction metal base, plate standard clasp wax thickness of 0.3 mm, having a micro-relief of the mucous membrane of prosthetic bed, soften and compresses on the refractory model and wax covers her with palatal and vestibular surfaces, remove excess wax on the marked borders, on the edge of the wax blanks and palatal sides of the metal base modeling wax strip width up to 2 mm type qualifier basis", which provides sufficient thickness of the edge of the base plastic and a smooth transition to the plastic parts of the prosthesis in the metal, preventing the process of functioning of the prosthesis, the injury of the mucous membrane of the tongue. For the connection of plastic with a metal base model arcuate brackets in the projection of the top of the alveolar crest model of the wax components with a diameter of 0.3 mm height 2 mm at a distance of 5 mm from each other, creating a Gating system, make a mold, cast the wax at a temperature of 300°C for 30 minutes, the mold calcined to a temperature of 950°C for 30-40 minutes, after which the temperature increased to 1230-1250°With 20-30 seconds and rotate the whole system of the crucible from the mold. Under the action of centrifugal force the metal fills the mold, allowing one to obtain a homogeneous casting due to uniform compaction of the metal throughout the volume. After about what onania casting flask is cooled to room temperature, the casting removed from the mold box, clear in sand-blast apparatus, remove gates, polished. Then a pin is stuck metal frame in the oral cavity. Further modeling wax similar, compensating bone resorption of the alveolar ridge, and are setting artificial teeth. Autodelivery prosthesis gypsum in a cell, consisting of two parts, the bottom and cover. Cuvette provided with grooves and protrusions for fixing its detachable parts. In the lower part of the cell gypsum model with the prosthesis in a vertical position, then install the upper part of the cuvette and fill it with liquid plaster on the vibrator. Cuvette stand before the complete solidification of gypsum under pressure. After wax removal by evaporation cell open, isolate the surface of the plaster forms a separating varnish. The upper part of the cuvette filled doughy acrylic plastic, combine half of the cell and pressed in the vertical direction. The plastic will polimerizuet. Remove the denture from the cell. Spend grinding and polishing, after which the prosthesis pin is stuck in the mouth.

Example 1. Patient K., 56 years old, came to the clinic of orthopedic dentistry with complaints about the lack of teeth in the upper jaw, inability to chew food, aesthetic defect.

From the anamnesis. The teeth of the upper and lower jaw were removed in the s time for complications of caries and chronic periodontitis. In order to restore chewing efficiency three times there have been attempts in the manufacture of dental prostheses, the effect is not there.

Physical examination revealed a decrease in the height of the lower part of the face, the severity of nasolabial and chin creases, drooping corners of the mouth.

From the vestibule and the actual oral cavity was determined by the complete absence of teeth in the upper and lower jaw, type toothless upper jaw by Schroeder I, the lower the Keller I, form alveolar clivus upper and lower jaws steep, Palatine vault deep, alveolar mounds of the upper jaw pronounced, the relationship of the alveolar ridge of the upper jaw and the alveolar part of the mandible in the sagittal plane orthognathic, in the transverse - alveolar part of the mandible corresponded to the alveolar bone of the upper jaw, the mucous membrane of the jaws normal density Trofimovna, lip and lingual frenulum, buccal folds attached close to the top of the alveolar ridge of the upper jaw and the alveolar part of the mandible.

DS: Full secondary edentulous upper and lower jaws.

The patient on the upper jaw made of complete removable dental prosthesis, consisting of a double-layer base and artificial teeth. Layer basis, converted to a prosthetic socket, the outer edge of which is aspolozhena in actively-moving part of the mucous membrane, contacting the dome transition folds, envelopes of the frenulum lip and cheek folds with the formation of the closing valve, made of super-elastic Nickel-titanium, and a layer basis, compensating bone resorption of the alveolar ridge, made of acrylic plastic. The lower jaw is made of metal-ceramic dental prosthesis supported by implants.

Dynamic observation showed that adaptation to the maxillary prosthesis was in for 3 days, after which the patient was noted satisfactory functional state of the dental apparatus. When viewed in 2 years the patient had no complaints, the status of satisfactory prosthesis. Morphological study of the mucous membrane of prosthetic bed held before and after prosthesis showed no signs of inflammation and atrophy.

Figure 2 - patient K. to orthopedic treatment (front projection).

Figure 3 - patient K. to orthopedic treatment (right lateral projection).

Figure 4 - the condition of the oral cavity of the patient K. to orthopedic treatment.

Figure 5 - full removable denture in the upper jaw of the patient K. (verhneberegovaya projection).

Figure 6 - full removable denture in the upper jaw (zadniprianaya projection).

Figure 7 - full removable denture in the upper jaw in the mouth Bo is inogo K. in the state of Central occlusion.

On Fig - full removable denture in the upper jaw in the mouth of the patient K. when the mouth is open.

Figure 9 is a sick To. after orthopedic treatment (front projection).

Figure 10 - patient K. after orthopedic treatment (right lateral projection).

Example 2. Patient T., 60, turning to the clinic of orthopedic dentistry complained of the absence of teeth in the upper jaw, inability to chew food, aesthetic defect.

From the anamnesis. The teeth on the upper and lower jaw were removed at different times for complications of caries and chronic periodontitis. In 2000, on the upper and lower jaw had surgery dental implantation and made non-removable plastic dentures. A year later abutment on the upper jaw removed with dental implants due to peri-implantitis.

Physical examination revealed a decrease in the height of the lower part of the face, the severity of nasolabial and chin creases, drooping corners of the mouth.

From the vestibule and the actual oral cavity was determined by the complete absence of teeth in the upper jaw, type toothless upper jaw by Schroeder III, the shape of the alveolar slope of the upper jaw sloping, Palatine arch flat, alveolar mounds of the upper jaw are not expressed, mucous Obol who cka thinned, atrophic, lip frenulum, buccal folds attached close to the top of the alveolar ridge of the maxilla. In the lower jaw the status of dental implants and prosthetic satisfactory.

DS: Full secondary edentulous upper jaw, the state after dental implant and a dental prosthesis of the lower jaw.

The patient on the upper jaw made of complete removable dental prosthesis according to the developed technology.

When viewed in 2.5 years, the patient had no complaints, functional disorders of the dental apparatus is not detected, reviews of satisfactory prosthesis. Pathomorphological study of the mucous membrane of the prosthetic bed showed no progression of atrophy.

Figure 11 - the patient So to orthopedic treatment (front projection).

On Fig - So sick to orthopedic treatment (right lateral projection).

On Fig - the condition of the oral cavity of the patient So to orthopedic treatment.

On Fig - full removable denture in the upper jaw of the patient So (ninaperunova projection).

On Fig - full removable denture in the upper jaw of the patient So (zadawalajaca projection).

On Fig - full removable denture in the upper jaw in the mouth of the patient So the state Central occlusion.

On Fig - complete the denture in the upper jaw in the mouth of the patient So when the mouth is open.

On Fig - So sick after orthopedic treatment (front projection).

On Fig - So sick after orthopedic treatment (right lateral projection).

The technical result of the invention is the reduction of the terms adaptation and improvement of the strength properties of the prosthesis by reducing the thickness of the super-elastic layer basis to 0.3-0.5 mm, which gives the opportunity to obtain functionally adapted to the patient the abutment with the preservation of temperature perception tissue prosthetic bed, as the basis of this prosthesis has a higher thermal conductivity in comparison with plastic. Features of this design does not contact the plastic parts with tissue prosthetic bed, and a shock-absorbing function titanium nickelide due to the elastic properties promotes uniform distribution of chewing pressure on orthopedic bed that prevents atrophy. No macro shifts on the surface of contact of the denture supporting tissues eliminates the inflammatory response and contributes to the distribution of masticatory load on low, medium and well-pliable tissue, thereby increasing the amount of supporting structures.

Full removable denture in the upper jaw, consisting of a double-layer base and artificial teeth, characterized in that the layer that basis, converted to a prosthetic socket, the outer edges of which are located in the rapidly-moving part of the mucous membrane, contacting the dome transition folds, envelopes of the frenulum lip and cheek folds with the formation of the closing valve, made of super-elastic Nickel-titanium, and a layer basis, compensating bone resorption of the alveolar ridge, made of acrylic plastic.



 

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EFFECT: simplified production process; early stage cancer patient rehabilitation in half-maxilla resection cases.

FIELD: medicine.

SUBSTANCE: method involves covering dental structures or prostheses with ribbon manufactured from fibers and coating it with filling material layer. The ribbon is manufactured from fluorine-containing copolymer monofiber of circular cross-section woven as ribbon as it is shown on dwg 1.

EFFECT: provided dental structure balanced life when splinting and high adhesion degree of prosthesis to filling material.

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FIELD: medical engineering.

SUBSTANCE: device has double layer base and artificial teeth. Base layer, facing prosthesis bed having external edges positioned in active movable part of mucous membrane in making engagement to transition vault fold enveloping upper lip frenulum and buccal folds with closing valve being formed, is manufactured from superelastic titanium nickelide. The base layer compensating alveolar process bone tissue atrophy is manufactured from acrylic plastic.

EFFECT: accelerated adaptation period; improved strength characteristics.

19 dwg

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