RU180924U1 - Tooth Distillation Device - Google Patents

Abstract

The utility model relates to medicine, specifically to dentistry, is used in orthodontics for tooth distillation. The technical result of the proposed utility model is to improve the results of tooth distalization by creating constant dosed forces on the moved teeth, reducing the number of device activations, and shortening the treatment time. made in the form of a crown-kappa apparatus, characterized in that the active elements providing body movement of the teeth are sp rali of a superelastic material with a shape memory effect, two of which are located on the surface of buccal and oral crowns, and one in the projection area of the roots of transitional fold before reaching the mucosa for a distance of 1 to 2 mm. 4il.

Description

The utility model relates to medicine, specifically to dentistry, and is used in orthodontics to distal teeth.

During orthodontic treatment, very often there is a need to move the teeth for their proper location in the dentition.

The relevance of this task is due to the high prevalence of dentoalveolar anomalies, especially dental crowding, which can cause functional, aesthetic and psychoemotional disorders.

There are various devices for the distalization of teeth.

The use of the edgewise technique is known for orthodontic treatment, which does not require constant activation, however, to move one tooth, braces must be applied to the entire dentition, with mandatory etching of the enamel, which can have an adverse effect on the tooth enamel, especially with low resistance of the teeth to caries . In connection with these shortcomings, great importance is given to reducing the adverse effects of orthodontic treatment on tooth enamel and reducing the number of activations of orthodontic appliances (4, 5, 6)

Known crown-kappa apparatus MZ Mirgazizova for distalization of fangs. The device provides body movement of the canine to the correct position. The disadvantages of the apparatus are the bulkiness of the active elements and the need for their constant activation (Mirgazizov MZ New types of removable and non-removable orthodontic appliances // Materials of the IV conference of dentists in Kuzbass. Kemerovo, 1967. - S. 196 - 199).

Known apparatuses for moving teeth with rubber traction, providing tooth movement, they also need constant activation and replacement of rubber rings (Vasilevskaya ZF, Mukhina AD, Deformation of the dentition in children. - Kiev: Health, 1975. - 330 from.)

Closest to the claimed device is a crown-mouth guard with rubber traction, which is selected as a prototype. It consists of crowns that are worn on teeth that need to be moved, mouth guards that are fixed to abutment teeth and metal hooks attached to crowns and mouth guards from the vestibular and oral sides. The device works due to traction of rubber rings. (Kalvelis D.A. Orthodontics. Maxillofacial anomalies in the clinic and experiment. - L.: Medicine, 1964. - P.155-156.)

The advantage of this device is the absence of side effects on tooth enamel.

The disadvantages of the device include the need for constant replacement of the rubber rings to provide pressure on the tooth being moved, the inability to accurately dose the traction, since after a while the rubber traction weakens, and the newly put on rubber ring exerts greater force compared to the previous one.

The technical result of the proposed utility model is to improve the results of tooth distalization by creating constant dosed forces on the moved teeth, reducing the number of device activations, and shortening the treatment time.

A device for tooth distillation in the form of a crown-mouthguard apparatus is proposed.

 The difference is that superelastic spirals with the effect of shape memory, two of which are located on the vestibular and oral surfaces of the crowns, and one in the area of the projection of the roots along the transitional fold, not reaching the mucosa by 1-2 mm

The essence of the claimed technical solution is illustrated in figure 1, figure 2, figure 3. Where, in Fig. 1, a schematic representation of the device is shown, in Fig. 2 is the view of the oral cavity before orthodontic treatment, in Fig. 3 is the view of the oral cavity after orthodontic treatment, in Fig. 4 is the view of the oral cavity 12 months after the end of the orthodontic treatment.

A device for tooth distillation made in the form of a crown-mouthguard with superelastic spirals with a shape memory effect, two of which are located on the vestibular and oral surfaces of the crowns, and one in the area of the root projection along the transitional fold is shown in figure 1, where:

1 - hook hooks are soldered to the crown and mouthguard from the vestibular side;

2 - hook hooks from the vestibular surface;

3 - hook hooks from the oral surface;

4 - superelastic spiral with the effect of shape memory in the area of the projection of the roots along the transition folds.

The claimed technical result is achieved due to the fact that in the device containing mouth guards, mounted on the abutment teeth and crowns, worn on movable teeth (on the crowns and mouth guards on the vestibular side, two hook hooks and one hook on the oral side to fix the active elements ), the use of superelastic NiTiMo wire in the form of a spiral is proposed as active elements (wire Ø - 0.22, R coil - 0.7) (Fig. 1). Super-elasticity allows you to act on the tooth with small dosed forces, eliminating periodontal overload. The shape memory effect provides a constant tendency of the spiral to compress, thereby transmitting a constant thrust to the moved tooth, and there is no need for active element activations. The presence of three spirals (two on the vestibular and oral sides, and one in the area of the root projection along the transitional fold) is the most optimal solution for body movement of the tooth, reducing the time of active treatment, and normalizing the functions of the dentofacial system.

As practice has shown, the proposed technical solution is especially optimal in the treatment of canine dystopia.

This anomaly consists in the displacement of fangs and occurs in approximately 30% of cases of all types of orthodontic anomalies. Treatment for displaced fangs is difficult for a variety of reasons. The tooth may be in the wrong position, the root may be bent, there may not be enough space. The use of superelastic metal spirals with a memory effect allows you to create the force necessary for successful tooth movement. Under the action of the forces arising in the proposed device, the root of the tooth performs a translational movement in a given direction.

Any device develops orthodontic force only a certain period of time. Therefore, it is not sufficient to conscientiously apply it; it needs the activation of active elements. Activation of active elements should be carried out depending on the variety of the active element with a certain interval and intensity. The device we offer does not require a large number of activations, due to the fact that spirals made of superelastic wire made of NiTiMo in the form of a spiral are used. There is a “soft” impact on the tooth (retraction) and thus overload is excluded. At the temperature of the oral cavity, the shape memory effect is triggered on the basis of a change in the crystal lattice of the alloy, the occurrence of a force that begins to “tighten” the spiral into its original shape.

In addition, superelastic spirals with a shape memory effect, two of which are located on the vestibular and oral surfaces of the crowns, and one in the projection of roots along the transitional fold do not reach the mucosa by 1-2 mm. (due to the placement of polyethylene gaskets in the manufacture of the apparatus). And this reduces the likelihood of injury to the mucosa, shortens the treatment time, improves the result of tooth distalization.

The implementation of the device in the form of a crown-kappa apparatus with superelastic spirals ensures the movement of teeth due to the shape memory effect. The tooth moves, the number of activations (memory effect) is reduced, the treatment time is reduced, the likelihood of injury is reduced. All signs of the formula are in a causal relationship with the claimed technical result.

The device is used as follows:

- take impressions from the jaws,

- make a crown on the moved tooth and mouthguard on the abutment teeth,

- fit the crown and mouthguard,

- solder the hooks on the crown and mouthguard, 2 hooks on the vestibular side and 1 hook on the oral side,

- remove a tooth less valuable from a functional point of view (with crowded teeth),

- fix the crown and mouthguard with soldered hooks on the teeth,

- cut a piece of the spiral 1/3 less than the distance by which you want to move the tooth,

- screw the fixing device on both sides of the spiral,

- cool the spiral, stretch it and hook it.

To move one tooth, 3 spirals must be applied. The movement of the tooth is ensured by the constant action of small forces in the area of the tooth crown (from 2 sides) and in the root area.

Clinical example.

To illustrate the action of a device for tooth distalization using superelastic NiTiMo spirals, we present a clinical example of a patient with dystopia of the upper right canine.

Patient K., 16 years old. I complained of an aesthetic defect.

Diagnosis: dystopia of the upper right canine in the absence of space for him in the dentition (Fig. 2).

In December 2000, after removal of the upper right first premolar, the patient was fixed with a device for tooth distalization using superelastic NiTiMo spirals (Fig. 1). In February 2001, a movable canine set into a dental arch (Fig. 3). During active orthodontic treatment, activation of superelastic spirals was not required. The patient was under follow-up for 12 months. No relapse occurred during this time. The occlusal relationships are correct, the aesthetic defect is eliminated (Fig. 4).

The given example proves the high efficiency of the proposed device in accordance with the stated objectives of the utility model.

List of sources used in compiling the description.

1. Vasilevskaya Z.F., Mukhina A.D. Deformation of the dentition in children. - Kiev: Health, 1975 .-- 330 p.

2. Kalvelis D.A. Orthodontics. Maxillofacial abnormalities in the clinic and experiment. - L .: Medicine, 1964 .-- 238 p.

3. Mirgazizov M.Z. New types of removable and non-removable orthodontic appliances // Materials of the IV conference of dentists of Kuzbass. Kemerovo, 1967 .-- S. 196 - 199.

4. Tugarin V.A., Persin L.S., Porokhin A.Yu. Modern fixed orthodontic appliances edgeways. - M., 1996 .-- 220 p.

5. Khoroshilkina F.Ya. Elimination of functional, morphological and aesthetic disorders in the treatment of maxillofacial anomalies with the edgewise technique: a manual. - M., 1995 .-- 280 s.

6. Khoroshilkina F.Ya. Treatment of congenital and acquired maxillofacial anomalies using the edgewise technique // In the book: Guide to Orthodontics. - M .: Medicine, 1999 .-- S. 674 - 758.

Claims (1)

A device for tooth distillation made in the form of a crown-mouthguard apparatus, characterized in that the active elements providing body movement of the teeth are spirals from a superelastic material with a shape memory effect, two of which are located on the vestibular and oral surfaces of the crowns, and one in the region projection of the roots along the transitional fold, not reaching the mucosa at a distance of 1 to 2 mm.

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