Method for restoring groups of chewing teeth in the cases of completely lacking crown parts

FIELD: medicine.

SUBSTANCE: method involves restoring teeth by placing composite material, reinforced with net, into prepared dental cavities. Gingiva retraction is preliminarily done. Root part is prepared forming cup-shaped cavity. A tooth is subjected to acid etching, thoroughly rinsing with water, dried, covering twice with adhesive material and polymerized. Crown walls are molded to equator part and polymerized. Additional retention points on the internal surface of crown tooth part and part under restoration on circumference. Flowing composite is applied to prepared cavity dental cavity bottom after etching and treating with adhesive material. Cup-shaped net, prepared in advance and repeating internal surface of the prepared cavity, is set and pressed against cavity bottom. Final restoration of crown tooth part is carried out after having fixed the net. Occlusion editing is carried out before polishing and control polymerization is applied.

EFFECT: enhanced effectiveness in restoring anatomical form and function of injured teeth.

5 cl

 

The invention relates to medicine, namely to the dentist, and is intended for restoration of the masticatory teeth groups in the complete absence of a coronal part.

To complete the defects of the tooth crown is:

- the presence of gingival part of the crown, protruding above the level of the gingival margin to 3 mm,

- possible save 1-2 walls,

- the presence of the hard tissues of the tooth at the level of the gingival margin,

- the destruction of the hard tissues of the tooth to the level of the tissues of the root and below the level of the gingival margin in the range up to a quarter of the length of the root (with the large destruction shows the removal of the tooth root).

The level of technology.

From publicly available sources of information at the priority date of the application it is known that for the restoration of the coronal part of the tooth with intact root in dentistry used artificial crowns based on religious or pin tumbler construction. Direct and indirect restorations of light-cured composite materials, advanced reinforced glass ionomers cements, composites, chemical curing and a variety of pin structures ("posts") [1, 2, 3].

Known application method of anchoring pegs fixed in the root canal of the tooth cement and subsequent restoration of the coronal part of the composite materials [4].

The disadvantages of the known method is that mo is:

- the retention of the pin is only due to the filling material, so that when the fixing pins may have a greater internal stress, resulting in the destruction of the root;

- effect “wedge”, which occurs in the apical part of the tooth under overload, may be the cause of the split root;

the resorption of the cement leads to the violation of the fixing pin;

- the need for preparation and expansion of the root canal to lock the pin leads to istecheniyu walls of the root and deterioration of mechanical strength of the root;

- limited use in obturated or severely damaged canals;

- insufficient mechanical strength of the structure associated with the small area of contact of the pin, a composite material with tooth tissues;

- the complexity of setting pins.

The prior art method of restoration of the masticatory groups of teeth with full or partial destroyed coronal part by setting in the prepared cavity of a tooth reinforcing element in the form of a grid G-shaped or U-shaped form and the subsequent restoration of the coronal part of the adhesive [5]. The known method is adopted for the prototype.

The disadvantage of this method is the absence of a coronal seal reinforcing element to restore the tooth surface, when the result in chips composite material and reduces the strength.

Object of the invention is to develop a way of restoration of the masticatory teeth groups in the complete absence of a coronal part to the use of metal mesh or synthetic material, ensuring elimination of the above disadvantages.

Effect: restore anatomical form, function and appearance of damaged teeth using composite materials and metal mesh or synthetic material, without having to use any additional elements fixed in the root canal of the tooth (leaving this backup method).

The technical result of the invention is achieved due to the fact that the means of restoration of the masticatory teeth groups in the complete absence of a coronal part by placing it in the prepared cavity of a tooth composite, reinforced mesh, previously conducted retraction of gum, and then dissect the root part forming a Cup-shaped cavity, after which the tooth is subjected to acid etching, rinse thoroughly with water, dried, adhesive is applied twice and will polimerizuet, then the composite material forming the wall of the crown to the Equatorial part, will polimerizuet and form additional retention points with the inner surface being restored and the root portion of a tooth on the circumference, then on the bottom of the prepared cavity is UBA after etching and processing adhesive make the current composite and simultaneously establish a pre-prepared mesh Cup-shaped form, repeating the inner surface of the prepared cavity, pressing it to the bottom of the cavity, after fixation mesh carry out the final restoration of the tooth crown, while before polishing and controlling the polymerization is conducted occlusive editing. The grid can be made of metal and before installing subjected to acid etching or synthetic material.

The grid can be subjected to adhesive treatment followed by the application of a masking agent, while maintaining its overall porosity.

In the particular case of the execution of the grid corresponds to the height of the equator of a tooth crown.

The advantages of the present invention:

1. increases mechanical strength, reduced shrinkage and improved marginal seal of composite;

2. prevents chips composite material;

3. when the act of chewing is a uniform distribution of load on the remaining dental tissue;

4. still have access to the channel (if necessary, you can perforate metal mesh);

5. prostate manufacturing a metal grid.

The essence of the invention.

The proposed method assumes that endodontology treatment of the tooth. Root canals should be filled to the top and not have periapical changes.

After gingival retraction thin cones is ne diamond head is treated with a root part, adjacent to the gum. In subsequent spend dissection of the root portion of the tooth spherical boron, forming a bowl-shaped cavity. Then the tooth is subjected to acid etching. After thorough rinsing with water, the surface is dried. Put double-tassel adhesive and polimerizuet. Next, the composite material designed to restore posterior teeth, form the wall of the crown to the Equatorial part of the thickness of 1-1,5 mm will Polimerizuet. Then spiked with boron to form additional retention points with the inner surface vosstanovlenie part of the tooth and the remaining root portion within the dentin around the circumference of the tooth.

For the manufacture of a reinforcing part of the proposed design uses a grid of metal, for example stainless steel, of a thickness of 0.2 mm, designed for reinforcing basic records, or synthetic material, for example polypropylene. The mesh should pick up the necessary size and using stopper create a shape that mirrors the inner surface of the restoring of the tooth cavity, so that the outer surface of the mesh tightly to the inner surface of the prepared cavity. The height of the metal mesh should not exceed the equator of the crown of the tooth. The grid is subjected to acid etching, adhesive processing with subsequent on what esteem masking agent, while maintaining end-to-end porosity.

At the bottom of the prepared cavity of a tooth, after etching and processing adhesive, make a flowable composite and simultaneously establish a grid, pressing it to the bottom. Will polimerizuet. After fixing a metal grid spend the final restoration of the tooth crown, using restoration system for posterior teeth. Before polishing and controlling the polymerization is conducted occlusive editing.

The treatment in this way allows you to increase structural strength, increase longevity of the restoration. Complications after the restoration of the masticatory teeth groups in the complete absence of a coronal part using a metal mesh made of stainless steel or synthetic material polypropylene in the above manner have been identified.

Example.

Patient K., 32, addressed to the dentist with complaints about the complete destruction of the crown 16 of the tooth. With words, 16 tooth was previously cured about complicated caries.

External examination without features. Bite orthognathic. The mucous membrane of the mouth pale pink color.

Objectively: the crown 16 of the tooth completely destroyed. Percussion is painless. On the radiograph 16 tooth periapical no changes, the channels are sealed to the tops.

Treatment: after re is racchi gum thin conical diamond head is treated with a root part, adjacent to the gum, spherical boron carry out the dissection of the internal surface of the tooth, forming a bowl-shaped cavity. Handle cavity acid. After thorough rinsing with water, the surface is dried. Put double-tassel adhesive and polimerizuet. Next, the composite material designed to restore posterior teeth, form the wall of the crown to the Equatorial part of the thickness of 1-1,5 mm will Polimerizuet. Then spiked with boron to form additional retention points with the inner surface restored and the root portion around the entire circumference of the tooth. Selected by size mesh stainless steel with a thickness of 0.2 mm Flex using stopper closer in form to Polygone tooth, so that the outer surface of the mesh tightly to the inner surface of the prepared cavity and the grid is subjected to acid etching, adhesive treatment followed by the application of a masking agent, while maintaining the porosity of the mesh. In a prepared cavity of a tooth, after etching and processing of its adhesive, make a flowable composite and simultaneously establish a grid with subsequent polymerization. Next use restavracionnoe system for posterior teeth, restore the walls and chewing surface. After restoring all lumps are resurfacing, p is a formulated, and a final polymerization.

Sources of information

1. Kopeikin VP Guide prosthetic dentistry. M., 1998, s.

2. Nikolaev A.I., Tsepov L.M. Practical therapeutic dentistry. St. Petersburg, 2001

3. Svetlov A.V., Kozlov, S., Peter Dukart. Experience with root pins system Cosmopost // Institute of dentistry. March 2000

4. Jordan R.E. // Composite filling and lining materials in dentistry. Averina, Vinesparc. / Kyiv, 2001, s.

5. The EPO patent No. 0565889 A1, CL And 61 With 5/00, publ. 17.03.93. The PROTOTYPE.

1. The way of restoration of the masticatory teeth groups in the complete absence of a coronal part by placing it in the prepared cavity of a tooth composite, reinforced mesh, characterized in that the defect restore with regard to anatomical form, function and appearance of a damaged tooth, previously conducted retraction of gum, and then dissect the crown part, forming a Cup-shaped cavity, after which the tooth is subjected to acid etching, rinse thoroughly with water, dried, adhesive is applied twice and will polimerizuet, then the composite material forming the wall of the crown to the Equatorial part, will polimerizuet and form additional retention points with the inner surface being restored and the root portions of the teeth around the circumference, then on the bottom of the prepared Polo is ti tooth after etching and processing adhesive make the current composite and simultaneously establish a pre-prepared mesh Cup-shaped form, repeating the inner surface of the prepared cavity, pressing it to the bottom of the cavity, after fixation mesh carry out the final restoration of the tooth crown, while before polishing and controlling the polymerization is conducted occlusive editing.

2. The method according to claim 1, in which the mesh is made of metal and before installation is subjected to acid pickling.

3. The method according to claim 1, wherein the mesh is made from synthetic material.

4. The method according to claims 1 to 3, characterized in that the grid is subjected to adhesion treatment with subsequent application of a masking agent, while maintaining its overall porosity.

5. The method according to claim 1, characterized in that the height of the grid corresponds to the height of the equator of the tooth.



 

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FIELD: medicine.

SUBSTANCE: method involves restoring teeth by placing composite material, reinforced with net, into prepared dental cavities. Gingiva retraction is preliminarily done. Root part is prepared forming cup-shaped cavity. A tooth is subjected to acid etching, thoroughly rinsing with water, dried, covering twice with adhesive material and polymerized. Crown walls are molded to equator part and polymerized. Additional retention points on the internal surface of crown tooth part and part under restoration on circumference. Flowing composite is applied to prepared cavity dental cavity bottom after etching and treating with adhesive material. Cup-shaped net, prepared in advance and repeating internal surface of the prepared cavity, is set and pressed against cavity bottom. Final restoration of crown tooth part is carried out after having fixed the net. Occlusion editing is carried out before polishing and control polymerization is applied.

EFFECT: enhanced effectiveness in restoring anatomical form and function of injured teeth.

5 cl

FIELD: medical engineering.

SUBSTANCE: device has perforated plate or metal wire network plate. Pin has reinforcing part manufactured as curve plate and fixing part matching root base cavity in shape and fastening member. The reinforcement pin is fixed in root canal with a fastening member manufactured from twisted metal threads passed through fixing part of the pin. The crown tooth part is formed on the reinforcing pin part from composite material.

EFFECT: retained anatomical natural tooth shape and appearance; retained crown part.

FIELD: medicine.

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.

FIELD: medicine.

SUBSTANCE: method involves carrying out gingiva retraction, forming L-shaped notches on central incisors medial surface and cutting edges. L-shaped reinforcing members produced in advance in conformance with the notches are arranged in the notches filled with fluid composite. The reinforcing members are set 1-1.5 mm below incisor cutting edges level. Guided polymerization of vestibular, oral and cutting surfaces being over, diastem is eliminated by coating medial surface of incisors layer-by-layer with composite material selected for being applied to frontal teeth group. The central incisors are polished and cutting edge is adjusted to recreate anatomical shape.

EFFECT: enhanced effectiveness of treatment.

4 cl

FIELD: medicine.

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: medicine, stomatology.

SUBSTANCE: the suggested method deals with applying infiltration anesthesia, preparing intact walls of dental crown part up to healthy solid tissues and their reconstruction up to equator's level, moreover, osteostimulating material based upon hydroxyapatite, collagen and "Collapan-L" medicinal preparation should be applied in area of root foundation and bifurcation after removal of demineralized tissues of foundation and medicinal treatment to be isolated due to temporal bandage. After complete reconstruction of root perforation one should additionally reinforce a cavity developed with walls and foundation of reconstructed root due to applying a metal netting pre-formed in accordance to reinforcing cavity, moreover, the next final reconstruction of dental crown part should be fulfilled by applying restorative system for masticatory dental group. The innovation enables to minimize traumatism of impact in the course of reconstruction along with the control for regeneration of root's solid tissues and higher strength of dental root and crown parts.

EFFECT: higher efficiency of dental reconstruction.

FIELD: medicine; dentistry.

SUBSTANCE: method involves preliminarily improving worn-down chewer teeth occlusion, determining tooth color from VITA scale, making gingiva retraction, forming U-shaped groove on each tooth along cutting edge and on approximal surfaces and bearing areas on oral surface mating the tooth grooves along cutting edge. The oral surface is prepared on 1/3 of its length 1-2 mm far from medial and distal borders. Reinforcing rectangular gold-plated metal gauze is fixed on the supporting area. The gauze width is selected not to be greater than sum of tooth crown width and interdental space. The gauze is fixed at least 1 mm blow the cutting edge level. Its separated intermediate portion formed in advance in accordance with supporting area dimensions. When being fixed, the gauze is thrusted against supporting area. Gauze portions to be fixed in grooves on approximal surfaces are formed as free wires brought close to each other in pericervical zone before final substitution of diastemas and restoring cutting edges with hard tissue losses taken into account and composite materials being applied.

EFFECT: enhanced effectiveness of lower dentition treatment in worn hard tissue cases.

2 cl

FIELD: medicine.

SUBSTANCE: method involves forming socket for setting pins in dental root canals. Collapsible stump pin insert is manufactured on plaster model in two stages. The first stage involves manufacturing stump part with pins available in parallel canals. The second stage involves prefabricating tunnel form for locking pin and adjusting it with wax. Available one-piece tooth crown manufactured before natural chewer stump fracture or destruction taking place is used as die for reproducing acrylic composition of positive artificial dental stump.

EFFECT: high strength and restoration quality.

FIELD: medicine.

SUBSTANCE: method involves applying endodontic root canal therapy, treating cavities in each canal being not deeper than 1/2-1/3 times corresponding canal length after preparing demineralized tissues of cervical one-third of the root and interradicular septum with flat surface being formed, forming walls from macro-filled composite material at the level of equator with arisen crown part being formed next using gauze crown carcass fixed in the crown cavity with glass ionomer cement and additionally attached to the root by means of at least one immobilizing pin and three additional pins prefabricated from gold-plated metal wires. The pins are mounted in canal cavities through crown carcass perforation holes and on internal surface of crown carcass bottom part. Intraradicular parts of the immobilizing wire pin manufactured as wire braids are fixed in canal cavities of roots to be united. Crown part walls are reconstructed from equator to occlusion surface using macro-filled composite material with damping cavity built at equator level. The crown part formed by restored walls and damping cavity surface is reinforced with the second prefabricated crown carcass fixed by means of glass ionomer cement and its cavity being filled with macro-filled composite material to the occlusion surface level. Tubercles are rebuilt using macro-filled composite material.

EFFECT: high strength and vertical displacement stability.

6 cl

FIELD: medical engineering.

SUBSTANCE: device has internal and external crowns repeating anatomical tooth shape. Recess is available on the internal crown as semicircular groove of 0.5-0.7 mm in depth all over the whole circumference. The groove is in upper part at the level of 1/3 of tooth crown. Convex protrusion of 0.3-0.6 mm in height is produced on the internal side of the external crown. The protrusion repeats internal crown recess shape.

EFFECT: high capacity for fixing removable prosthesis.

2 dwg

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