Method for restoring dental row with crown defect and anomalous lower incisor position by applying flexible reinforcing beams and net

FIELD: medicine.

SUBSTANCE: method involves applying endodontic treatment of root, fixing pin manufactured from gold-coated metal gauze having free wires on opposite ends and repairing dental crown part with composite materials depending on particular morphological features of the dental row and length of area between the abutment teeth, to be substituted. The pin is fixed in root canal and mediodistal slot made in advance on its base with twisted wires. The wires on the opposite ends are bent towards vestibular side and additionally fixed with beams fixed in advance on the abutment teeth. The wires are brought above the upper and under lower beams. The beams and wires are treated with masking agent before repairing dental crown part.

EFFECT: enhanced effectiveness in restoring functional and esthetic properties of dental row; accelerated treatment procedure; reduced risk of traumatic complications.

2 cl

 

The invention relates to dentistry and can be used in orthodontics at eliminating the abnormal location of the front teeth with a broken crown part.

To correct the anomalies of the teeth are applied mechanical (active), functional (passive) and combined machines.

The principle of their action is based on a power impact on roaming tooth, the abutment teeth or the area of the dentition, which corrected the defect location of the tooth.

The prior art method of moving abnormally positioned teeth when implementing the invention according to the patent of Russian Federation №2171654. Moving through the device, correct dental anomalies that contains the base plate, activated spring clasps and the active element. By covering the surface of the teeth moved active element and the force action of the spring provides controlled movement of teeth in the tooth row.

The prior art also known remedy the anomalous position of the teeth of the anterior segment of the dentition with application of the device according to the patent of Russian Federation №2181573, which contains the base plate and load-bearing element consisting of strands of wire with the correct configuration of the dentition. Pieces of wire placed inside the plates of an elastic is th plastics, adjacent to the oral and vestibular parties to the surfaces of the anterior teeth and covering their length from the distal edge of the right lateral incisor to the distal edge of the left lateral incisor, and the height is 2/3 of the surface of the crowns from the cervical area of the tooth. To create space in the dentition are omegabrite curves with a focus on the slope of the alveolar ridge. Implementation of known solutions provides uniform distribution of the forces acting on the displaced tooth, the possibility of a corpus of tooth movement, movement control, due to design features of the device, creating space in the tooth row.

As the practice of orthodontic treatment, depending on the clinical application of the apparatus may cause tissue damage to the periodontium and sharp mobility roaming abutment teeth, and can also lead to compression of the lateral areas of the dentition;

can disrupt physiological tooth mobility and damage the mucous membrane of the gums;

may complicate the cleaning of the oral cavity.

Furthermore, low substituted the area between the abutments apply additional grinding of the contact surfaces of these teeth for allocation of the tooth.

After the tooth is moved and action orthodontist the political forces stopped requires anchoring the tooth in its new position. This requires a certain time to the position of the displaced tooth has been consistently strong, has ended all the processes accompanying the restructuring of the periodontium. Otherwise, a recurring anomalies, and a tooth or group of teeth may return to its original position.

The presence of these disadvantages of the application of orthodontic products, as well as the duration of the process of eliminating anomalies and unpredictability therapeutic result, require search less traumatic, the most attractive and the most predictable methods to restore dentition in the abnormal displacement of the teeth.

The inventive method of restoring the dentition is shown in the case of displacement and slope at the oral side of the lower incisors with the destruction of the crown part. The inventive method may be implemented as a unilateral and symmetrical bilateral offset this group of teeth.

Orthodontic treatment when such combined clinical situation (the presence of both defect crowns and anomaly location of the tooth) is known devices are contraindicated. In particular, in this case, the recovery process of the dentition would require at least two separate stages: the restoration of the coronal part of the tooth and move it. Od is ako the impact of the efforts of the apparatus on a restored crown part of the tooth would result in a violation of its integrity. Thus, restoration of functional and aesthetic properties of the dentition at the given pathology by known means not possible. In practice the teeth with these defects, as a rule, are removed.

The claimed method allows to solve the problem in one visit to the patient, without the traumatic force action on incorrectly located the tooth or teeth and the dentition as a whole and at the same time to restore the crown part, giving it additional strength due to the reinforcement.

The method is carried out in the mouth, with maximum taking into account the anatomical and morphological features of the dentition, as well as the length of the replaced area between the contact surfaces of the abutment teeth.

Technical result achieved when implementing the inventive method, is to restore the functional and aesthetic properties of the dentition, reducing recovery procedures, the exception traumatic effects on the dentition, in ensuring the strength and durability of the restoration.

The technical result due to the following factors.

Conservation of root and restoration on the basis of the tooth crown. When implementing the method of the anatomical features of the root (its length, bending) are compensated design features used is of cifta. The execution of that part of the pin that is placed in the root canal, twisted between a flexible wires gold plated metal mesh makes possible the restoration of the dentition with any configuration of the root canal.

The use of the inventive pin gives additional strength to root canal, its base and crown of the tooth due to the reinforcement.

This coronal part of the tooth is exposed to double reinforcement: plated metal mesh located in the environment of the composite material of the crown portion, and the wire grid, distributed on the vestibular surface of this part and additionally secured between the two beams, also made of a number of wires stranded to each other. Beams fixed on the oral surfaces of the abutment teeth from the side of the defect. The wire is pre-bent in the vestibular side, forming, bending, reinforcing the cutting edge of the cutter, and fix so that they passed over the header (embracing her) and the free end passed under the bottom beam.

As for the beams, their placement with vestibular side ensures a stable position of the restored tooth relative to the tooth row. Thus, when implementing the inventive method, the resistance of the restored tooth can be provided is on and if an abnormal location of the root.

When the abnormal location of the lower cutter between adjacent teeth formed space - substituted plot. During the restoration of the coronal part of the cutter stated the way the length of this section defines the value of the contact surface of the restored tooth, which interacts with the contact surfaces of the teeth-antagonists and is influenced by functional loads. At a constant functional load with reduction of the contact surface of the restored tooth increases the pressure per unit of its surface, which can lead to the violation of the integrity of the restoration of the crown part. Therefore, used in the inventive method, the reinforcement is a necessary condition for increasing the strength and stability of the restored tooth, in particular to reduce the likelihood of fractures characteristic of the lower incisors.

The essence of the invention.

The claimed method is implemented as follows.

Mechanically surfaces of the teeth adjacent the defect, clean toothbrushes using toothpastes and determine a suitable color according to the standard scale VITA.

Exercise endodontical root treatment. Root canal sealed at 1/3 of its length and, if necessary, produce the extension of the root canal. On the basis of the root in mediad the steel direction the form of a longitudinal groove, retreating from the mesial and distal walls of the root to 1 mm.

Then from rectangular blanks of gilded metal mesh selected in accordance with the anatomical parameters of the coronal part of the cutter and the amount of space between adjacent offset cutter supporting teeth, form a reinforcing pin.

To do this, from opposite ends of the grid removes the cross wires so that the length of the intermediate part of the grid and the length of free wire with one side not exceeding the height of the space between the supporting teeth to the level of the occlusal surface. Loose wire on the other end of the mesh braid each other.

On the oral surfaces of the abutment teeth form two groove for fixing the upper and lower reinforcing beams. Beams are also made from several (4-5 pieces) twisted between a flexible orthodontic wires. Hold the fitting beams on the abutment teeth and, if necessary, an adjustment.

Then hold the fitting and adjustment of the pin and start to commit. Fixation is carried out with the help of cement.

Spend fixing reinforcing beams so that in the locked state they were located before being restored cutter and facing in the vestibular side.

Next, carry out the mechanical connection of the flexible beams and pin. the La free wire below the level of the occlusal surface of the bend in the vestibular side and pass over the top and under the lower beams. Thus, the upper beam as would be covered from above by wires, and their ends are positioned between the grid and the lower beam. Create additional "lattice weave" of wires and beams held among themselves at the expense of flexibility. This design feature provides additional reinforcement of the coronal part of the restored tooth.

Wire together with beams cover a masking agent, and then proceed to the restoration of the coronal part of the tooth with composite materials in accordance with the morphological properties of the dentition and taking into account the space between the supporting teeth.

Before polishing and controlling the polymerization is conducted occlusive editing. The final grinding and polishing is performed on the 2nd day after polymerization.

1. The way to restore the dentition when the defect crowns and abnormal location of the lower cutter with flexible reinforcing beams and the grid, including endodontic treatment of the root, the fixation pin made of gold plated metal mesh with loose wires at opposite ends, and the restoration of the coronal part of the tooth with composite materials in accordance with the morphological features of the dentition and the length of the replaced area between the abutments, and a pin fixed is comfort in the root canal and into the pre-made on the basis of mediatitle groove through twisted between the wires, and the wire at the opposite end of the grid after fixing pin bend in the vestibular side and additionally secured on the beams, made of twisted wires and fixed to the abutment teeth by oral surface, with the curved wire is passed over the top and under the lower beams, and before restoration of the tooth crown beams and wire handle masking agent.

2. The way to restore the dentition according to claim 1, including the restoration of the lower incisors when unilateral or bilateral symmetric offset this group of teeth.



 

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