Method for substituting failing frontal tooth with reinforcing net-and-beam adhesive dental bridge

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.

 

The invention relates to dentistry, and in particular to methods of prosthetics patients with partial loss of the front teeth bridges.

The prior art method prosthesis with partial loss of teeth on the patent of Russian Federation №2146505 by preparation of the abutment teeth and attach a prosthesis. A distinctive feature of this method is that the inside of the prosthesis is fixed thread extending from approximal sides and the envelope abutment teeth in the form of loops, the free ends of which pass through tunnels formed by oral prosthesis surface. The thread is placed in the grooves previously formed on the perimeter surface of the abutment teeth, tightly covers the abutment teeth and closes with a filling material.

There is also known a method of restoring the dentition by the RF patent №2160568 (seems to be the closest to the claimed invention). When implementing the known method is used bridge girder design, the middle of which is fixed inside an artificial tooth, and the speakers on both sides of the ends of the beam structure are designed for mounting on the abutment teeth adhesive material. And beam construction is the supporting frame of the artificial tooth, and for fixing the prosthesis to the abutment teeth forms the cavity are at the level of the fixation support of the prosthesis elements.

From the practice of prosthetics known that bridges have good functional properties. Using them is a complete restoration of chewing function, they keep well established occlusal relationships. These properties are provided appropriate orientation and fixation of the bridge relative to the restored dentition.

In the known method for these purposes provide additional orientation of the upper surface of the beam structure parallel to the approximal plane working surfaces of the abutment teeth, additional alignment levels and ensuring the parallelism of the supporting elements in accordance with the level and orientation of sites cavities formed in the respective abutment teeth, additional fitting and the fitting of adhesive bridges, as well as a preliminary adjustment of the bite.

In contrast to the known, in the present method of replacement of a missing anterior tooth functional quality reinforcing grid-beam adhesive bridge is provided by a different method.

The formation of the adhesive of the bridge and its correction with respect to the tooth row is carried out directly in the mouth. However, preliminary fitting and adjusting the and plaster models are only beams, made of orthodontic wire. In the inventive method, the bridge is fixed to the abutment teeth by means of two beams placed parallel to each other and parallel to the occlusal surface of the abutment teeth. Through the use of two parallel beams, fastened by a gold-plated metal mesh, shape corresponding to the shape of the tooth crown, precise orientation, replaced front of the tooth relative to the dentition of the patient, taking into account individual peculiarities of this series. To a solution of the same problem sent and the form of the beams. In the flattening of the wire prevents the rotation of the beams relative to their longitudinal axis during fixation on the abutment teeth. The inventive shape of the beams provides a gentle method of preparation of the abutment teeth, since the depth of the groove made by the oral surfaces of the abutment teeth for positioning and fixing beams does not exceed the thickness of the enamel layer of the abutment teeth.

In addition, in comparison with the known bridge-like prosthesis, the prosthesis used in the present method, has a more robust construction (basic technical requirement of bridge prostheses) due to the rigid fastening gold plated metal grid and parallel beams. For accounts who perform intermediate part of the frame of the prosthesis in the form of fixed beams plated metal mesh provides uniform distribution of the functional load on the artificial crown replaced tooth on the abutment teeth. Thus, the increased strength of the prosthesis, carry out the claimed method, in comparison with the known method.

When replacing a front tooth of particular importance for the patient acquires the aesthetics of prosthetics. Use in the claimed method gilded metal mesh, can have a crown replaced tooth in accordance with its anatomical characteristics, and anatomical features of the tooth row.

Typically, the prosthesis included defects of the anterior dentition using permanent dentures appropriate after 5-6 months after removal of the front teeth, as soon as the alveolar ridge. Otherwise, due to the atrophy of the alveolar crest between the body of the prosthesis and a crest, you may receive the slit and, as a consequence, speech and aesthetics. The application of the inventive method shown in this case. The specified defect can be eliminated by the restoration of the coronal part of the replaced tooth composite materials without violating the integrity of the prosthesis.

Technical result achieved during the implementation of the claimed invention is to improve durability, reliability and aesthetics of the restoration of the dentition with minimal injuries overnighthow, as well as in the reduction stage of replacement of a missing anterior tooth.

The essence of the invention.

1. The first clinical step is to create horizontal grooves from oral surfaces of the abutment teeth to a depth not exceeding the thickness of the enamel. On the abutment teeth form two slots for the placement and fixing of the upper and lower support beams intended for the subsequent formation of the grid-beam adhesive bridges.

After forming the grooves receive the impressions of the jaw, cast a working model of a high-strength gypsum.

2. The laboratory phase is to manufacture beams.

Reinforcing beams are made of orthodontic wire. Wire tapers. The formation of beams corresponding form provides a gentle method of preparation of the abutment teeth. Reinforcing beams are made so that they are without voltage was set into a formed on the abutment teeth grooves. Beams advanced Flex so that their intermediate part, intended for subsequent fastening reinforcing plated metal mesh, the shape corresponds to the shape of the replaced section of the dentition in the plane at the level of fixation of the beam (with the concavity toward the lingual surface). Fixed in the grooves of the beams must be computers is ini relative to each other. After fabrication of the beams spend their fitting and correction in accordance with a plaster model.

3. The second clinical stage, which consists in forming a reinforcing grid-beam frame of the bridge and restore the replaced tooth in the front row directly in the cavity of the patient.

Mechanically the surface of the abutment teeth adjacent the defect, clean toothbrushes using a polishing pastes, and determine a suitable color according to the standard scale VITA. Make the fitting and correction reinforcing beams on the abutment teeth in the mouth.

The beam is fixed in the slots previously executed on the abutment teeth, with the help of cement. To ensure high aesthetic performance carrier portion reinforcing beams designed for mesh fixation, cover masking agent. For reinforcing the crown portion of a missing tooth as an additional reinforcing element used gold plated metal grid. Mechanically the grid shape corresponding to the shape of the crown portion of a missing tooth. After fitting, mesh using a thin metal filaments mechanically rigidly fixed to the supporting parts of the beams. Thus form a reinforcing grid-beam frame of the bridge. the alley with the use of composite materials start to the final restoration of a missing front tooth in accordance with its anatomical shape, as well as anatomical features of the restored dentition.

Spend occlusive editing under the control of occlusal paper.

The aesthetic effect is achieved after pre-treatment polishing and grinding.

Thus, the claimed method allows for gentle method of preparation of the abutment teeth to restore dentition defect and phonetic function.

The sequence of implementation of the claimed method provides a more precisionist, strength, durability and aesthetics of the restoration of the dentition with the elimination of the defect front tooth.

The way to replace a missing front tooth with the use of a reinforcing grid-beam adhesive bridges, including the formation by oral surfaces of each of the abutment teeth of the two grooves to a depth not exceeding the thickness of the enamel and the formation in the oral cavity of the patient frame of the prosthesis, consisting of pre-recorded in the grooves of the parallel beams, made of flattened wire, and reinforcing plated metal mesh firmly attached to the carrier part beams by metal threads, while supporting part is pre-formed into the shape corresponding to the shape of the replaced dentition defect in the plane for fixing Alki, and the grid shape corresponding to the shape of the crown portion of a missing tooth, and the crown part is formed of a composite material in accordance with the anatomical shape of the tooth, as well as anatomical features of the restored dentition.



 

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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.

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