RU123659U1 - DEVICE FOR REMOTE MOVEMENT OF FIRST PERMANENT MAJOL MOLARS - Google Patents

Abstract

1. A device for the distal movement of the first permanent molars of the upper jaw, consisting of a palatal support reinforced with an orthodontic wire soldered to the palatal surface of at least two orthodontic rings installed on the first premolar, a guide rod is inserted to the vestibular surface of the orthodontic ring, which is included in the orthodontic lock, fixedly connected to the orthodontic ring mounted on the movable molar, characterized in that the rod has a movable stopper equipped with a fixed iruyuschim screw, and a spring located between the movable and orthodontic retainer lock has a length of at least 5 mm, the outer diameter of the spring ring is not more than 1.2 mm, and it is made of nitinol wire with a diameter of at least 0.2 mm.2. The device according to claim 1, characterized in that the movable elements of the device can be made of a metal material having a shape memory. The device according to claim 1, characterized in that all the elements can be made of metal, plastic or other material that provides sufficient hardness, elasticity and resistance to treatment with disinfectant compositions.

Description

The technical field to which the utility model relates.

The utility model relates to medicine, namely to devices used in dentistry. State of the art

In childhood and adolescence, an abnormal arrangement of teeth is quite common. The prevalence of dentoalveolar anomalies and deformities in children in the Tver region is high 70.3%, of which - occlusion pathology is 50.6%, dentition pathology 79.8%, anomalies of individual teeth 4.7%. The prevalence of deformations of the dentition increases with the formation of a permanent bite (in the milk and shift periods of bite formation), in one third of children with this pathology shortening of the dentition of the upper or lower jaw occurs.

The main method of treatment of this pathology is the removal of permanent teeth, but their preservation is possible when using the device for distal movement of the upper molars (utility model patent No. 45260)

The device consists of a plastic palatine abutment (1) reinforced with orthodontic wire, orthodontic rings on molars (8) and on the first premolar (3). A guide rod (4) is soldered to the vestibular surface of the same rings on which an omega-shaped loop (5) is rigidly fixed with a proximal end. The distal movable end of the loop ends with a ring (d - 1.0 mm) that spans the bar. The rod enters the hole of the functional orthodontic lock (6) soldered to the orthodontic ring (8). Nickel-titanium spring (7) is worn on the bar.

Principle of operation.

1) A structure consisting of a palatal abutment, a rod with an omega-shaped loop and individual orthodontic rings is fixed to cement for fixing crowns to the first premolars.

2) A spring is worn on the bar.

3) On the first molar on cement for fixing the crowns, the orthodontic ring is strengthened so that the rod passes through the opening of the functional lock. The length of the rod exceeds the distance between the first molar and the first premolar by the amount of mesial displacement of the first molar.

After the cement has hardened and its excess removed, this structure is activated by expanding the omega-shaped loop until the nickel-titanium spring is fully compressed due to deformation of the omega-shaped loop. The next activation is carried out when the spring from nickel-titanium returns to its original state (1-5.0 mm).

However, the clinical use of the device described above revealed a number of disadvantages:

1. The appearance of significant pain in the patient when the device is activated, due to significant pressure on the teeth fixed by orthodontic rings.

2. The inability to regulate the force of pressure on the teeth throughout the procedure and provide a constant and uniform force (when activated, it decreases as much as possible and gradually).

3. The need for the participation of a dentist in all manipulations associated with this device.

4. The device is disposable and, if necessary, its change is irrevocably destroyed, which increases its cost (for example, to relieve excessive pressure on the teeth, it is necessary to replace an omega-shaped spring, which is possible only when manufacturing a new device).

Utility Model Disclosure

The authors propose a modified device for the distal movement of the first permanent molars of the upper jaw. The device we offer has several advantages:

1. There was an opportunity to adjust the pressure (both weaken and strengthen) when the tooth is shifted;

2. The patient can independently maintain and activate the device;

3. It is possible to remove the device without completely destroying it and reinstalling it, which allows for any dental manipulations in the oral cavity in case of complications or exacerbation of concomitant diseases.

The technical result of using the proposed device is the ability to control the process of distal movement of the first permanent molars of the upper jaw by the patient himself, without a constant visit to the dentist and the ability to provide uniform force on the moved tooth during the entire treatment process.

To characterize the utility model, in particular, the following features of the device are used:

- on the guide rod there is a movable stopper equipped with a fixing screw;

- the spring located between the orthodontic lock and the movable stopper has a length of at least 5 mm, the outer diameter of the spring ring is not more than 1.2 mm;

- the spring is made of nitinol wire with a diameter of at least 0.2 mm.

Brief Description of the Drawings

Figure 1 shows a device for distal movement of the upper molars.

- position 1 - palatal plastic emphasis;

- position 2 - orthodontic wire;

- position 3 - orthodontic ring on the abutment;

- position 4 - guide rod;

- position 5 - omega loop;

- position 6 - functional orthodontic lock;

- position 7 - opening spring;

- position 8 - the orthodontic ring is worn on a displaced tooth;

Figure 2 shows the proposed device for the distal movement of the first permanent molars of the upper jaw

- position 9 - fixing screw;

position 10 - movable stopper.

Utility Model Implementation

- Elements of the device undergo sterilization according to the scheme adopted in this hospital.

- On the first premolar, using cement to fix the crowns set connected (as shown in figure 2) palatine support, a bar with a movable stopper and two orthodontic rings.

- A spring is worn on the bar.

- On the first molar, on cement for fixing crowns, the orthodontic ring is fixed so that the rod passes through the opening of the functional lock, the length of the rod exceeds the distance between the first molar and the first premolar by the amount of mesial movement of the first molar.

- Move the movable stopper to the necessary compression of the spring and fix its position with a fixing screw.

- If there is significant pain, the dentist or the patient himself displaces the stopper, weakening the action of the spring. After the effect is achieved, the stopper again moves and compresses the spring with the necessary force.

- In the event of stomatitis or another disease, the device can be removed and reinstalled.

Claims (3)

1. A device for the distal movement of the first permanent molars of the upper jaw, consisting of a palatal support reinforced with an orthodontic wire soldered to the palatal surface of at least two orthodontic rings installed on the first premolar, a guide rod is inserted to the vestibular surface of the orthodontic ring, which is included in the orthodontic lock, fixedly connected to the orthodontic ring mounted on the movable molar, characterized in that the rod has a movable stopper equipped with a fixed iruyuschim screw, and a spring located between the movable and orthodontic retainer lock has a length of at least 5 mm, the outer diameter of the spring ring is not more than 1.2 mm, and it is made of nitinol wire with a diameter of at least 0.2 mm. 2. The device according to claim 1, characterized in that the movable elements of the device can be made of a metal material having a shape memory. 3. The device according to claim 1, characterized in that all the elements can be made of metal, plastic or other material that provides sufficient hardness, elasticity and resistance to treatment with disinfectant compositions.

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