RU213465U1 - Device for installing orthodontic mini-implants in the region of the median palatal suture - Google Patents

Abstract

The utility model relates to medicine, namely to dentistry, and can be used to install orthodontic mini-implants (including Vector Tass mini-implants) in the region of the median palatine suture in order to move individual teeth or groups of teeth. The proposed device is characterized by the fact that the handle and the tip are permanently connected, and the tip is located at a turned angle of 180° relative to the handle, which allows positioning the mini-implant in the bone at an angle of 90°. The advantage of using the device is that it allows you to install mini-implants in the most suitable place of the palatine suture, including in the distal sections of the median palatal suture, while allowing the doctor to correctly position the mini-implant, manually and visually control the installation process. Due to the compact size of the device, it is suitable for use in patients with limited mouth opening. The tip length of this device is 11 mm, which is more ergonomic in the described clinical situations. Such a device allows you to securely fix mini-implants in the oral cavity and optimize orthodontic treatment of patients.

Description

The utility model relates to medicine, namely to dentistry, and can be used to install orthodontic mini-implants in the region of the median palatine suture.

Mini-implants are used in orthodontics to accelerate the movement of teeth or groups of teeth during the treatment of various anomalies. They are installed in the region of the median palatine suture, subzygomatic crest, maxillary crest medially from the second molar. Mini-implants are used in combination with brace treatment or in combination with treatment with the Herbst apparatus and other devices. The introduction of mini-implants contributes to the optimization of orthodontic treatment of patients.

Installation of mini-implants is carried out using specialized installation systems. One such system is Vector Tass: it includes screws, a screwdriver, springs, hooks and initiators.

The closest analogue of this device is the Vector Tass screwdriver. To install mini-implants, you need to connect a screwdriver and a tip together. This design is cumbersome and not suitable for the installation of mini-implants in the region of the median palatal suture. Also, its use is impossible in patients with a small amplitude of mouth opening. In these clinical situations, the screwdriver, due to its design features, does not allow installing a mini-implant in the area of the distal sections of the median palatal suture at the required angle of 90°.

The prototype of the device is a screwdriver from the Vector Tass system (see https://ortho.stomatorg.ru/catalog/ortodontiya/implanty_ortodonticheskie/instrumenty_dlya_ustanovki_implantov_vector_tas/otvertka_vectortas_universalnaya_uglovaya_s_nakonechnikami/). It consists of a handle, a removable contra-angle attachment and two removable tips. Tips in size 40 and 22 mm. The disadvantage of this prototype is its design features, which do not allow the installation of mini-screws at an angle of 90 degrees in the distal sections due to the presence of a contra-angle nozzle and a bulky handle, unsuitable tip sizes that cannot be placed in the distal sections of the patient's mouth at the required angle .

In FIG. 1 schematically depicts the clinical situation encountered by a dentist when attempting to place a mini-implant using the Vector Tass screwdriver. If the screwdriver is correctly positioned at a 90° angle to the bone, the tip of the screwdriver does not reach the patient's hard palate.

In FIG. 2 shows another clinical situation: the doctor positions the Vector Tass screwdriver so that it touches the patient's hard palate, however, with this screwdriver orientation, the mini-implant will be installed at an inappropriate angle (greater than 90°), which can lead to mini-implant mobility, premature removal, sinus perforation, incorrect orthodontic treatment.

The objective of the utility model is to optimize orthodontic treatment by creating a compact, ergonomic and easy-to-use device for the installation of mini-implants.

The task is achieved by the fact that in the device for installing orthodontic mini-implants in the region of the median palatine suture, including a ribbed handle and a tip for a mini-implant, the handle and the tip are integrally connected, have compact dimensions, and the tip is located at a developed angle of 180° with respect to to the handle, which allows you to correctly position the mini-implant in the bone at an angle of 90°.

The proposed device differs in that it is a one-piece design, which consists of a compact ergonomic ribbed handle and a tip into which a mini-implant is inserted.

In FIG. Figure 3 shows the design feature of the device: A - nozzle with respect to the handle is located at a developed angle of 180°, B - in the prototype, the nozzle with respect to the handle is located at an angle of 90°. The advantage of using the device is that it allows you to install mini-implants in the most suitable place of the palatine suture, including in the distal sections of the median palatine suture, while allowing the doctor to correctly position the mini-implant, manually and visually control the installation process. Due to the compact size of the device, it is suitable for use in patients with limited mouth opening. The prototype of this device has tips with a length of 40 and 22 mm, such a length does not allow the correct installation of mini-implants in the distal regions. The tip length of this device is 11 mm, which is more ergonomic in the described clinical situations.

In FIG. 4 shows a diagram of the operation of the proposed device. Due to its compact dimensions and design features, the device is completely inserted into the patient's oral cavity and positioned at an angle of 90° to the bone, which makes it possible to avoid complications and correctly treat the patient using mini-implants.

Such a compact device allows you to securely fix mini-implants in the oral cavity and optimize orthodontic treatment of patients.

Correctly placed mini-implants can significantly speed up the treatment of patients. They are advisable to use for distal movement of the upper dentition, elimination of the cramped position of the teeth in the anterior section of the upper dentition, and in other clinical situations in which it is necessary to move teeth or groups of teeth.

The utility model is illustrated with graphic material.

In FIG. 5 schematically shows a general view of the device, side view where: 1 - ribbed handle, 2 - tip into which the mini-implant is inserted.

Figure 6 shows a top view of the tip, where:

3- tip head,

4 - triangular hole complementary to the mini-implant head.

In FIG. 7 shows the dimensions of the device.

In FIG. 8 shows the assembled prototype of the device.

The method of installing a mini-implant using the device includes:

computed tomography of the maxillofacial area, measuring the size of bone tissue, selecting the size of a mini-implant;

antiseptic treatment of the oral cavity with a 0.05% aqueous solution of chlorhexidine;

anesthesia of the area in which the mini-implant will be installed;

the mini-implant is placed in the handpiece of the device, the device is inserted into the oral cavity and positioned. The introduction of a mini-implant is carried out by making smooth rotational movements with the doctor's thumb and forefinger;

after the installation of the mini-implant, a control CT scan of the jaws is performed to control the position of the mini-implant.

Immediately after the insertion of the mini-implant, it is loaded and included in the orthodontic treatment.

The control examination of the patient is performed 1 time in 2 weeks.

Clinical example

Patient A. came to the dental clinic with complaints of malocclusion, poorly developed chin region of the lower jaw. When examining the dentition, their distal relationship was revealed. The sagittal interincisor distance is 10 mm. At rest, the cutting edges of the upper incisors protrude from under the red border of the upper lip by 1-2 mm. The ratio of the canines on the right according to the 2nd class of Angle, the ratio of the molars on the right according to the 2nd class of Angle. The ratio of the canines on the left according to the 2nd class of Angle, the Value of the molars on the left according to the 2nd class of Angle.

On the basis of the examination, a diagnosis was made: the distal ratio of the dentition. Inferior retrograde. Neutral type of growth, close position of the anterior group of teeth on the upper jaw, protrusion of the upper incisors.

The patient was offered several orthodontic treatment plans, including treatment using a device for distal movement of molars with the installation of mini-implants in the area of the palatal suture, followed by fixation of the bracket system, on which the choice was made.

After receiving the models, an apparatus with a clasp element was made for distal movement of the dentition of the upper jaw. It was applied to the dentition and fixed with glass ionomer cement. A CT scan of the jaws was performed and using a measuring ruler in the program, the thickness of the palatal suture in the region of the second molars of the upper jaw was determined - 7 mm. To install a mini-implant, a device with a total length of 28 mm was used, as well as a length of the working part of the nozzle of 11 mm. The diameter of the handle of the device was 7 mm, and the diameter of the working part of the nozzle into which the mini-implant was inserted was 4 mm, as illustrated in Fig. 7. Using this device, a mini-implant with a size of 6.0 × 1.4 mm is installed to the patient, on which an elastic chain with a force of 100 g is fixed. Activation was carried out every 3-4 weeks.

The duration of the use of the device with a pull to the mini-implant was 8 months. After reaching the required degree of distal movement of the lateral group of teeth, a bracket system was installed in order to close the formed three and correct the position of the teeth. It took another 8 months. As a result of the treatment, an improvement in the profile of the face was achieved, the crowding in the anterior section was eliminated, the ratio of the dentition was normalized to Angle class I in canines and molars.

The proposed device allows correct positioning of the mini-implant in the bone at an angle of 90°, as well as the use of this design in patients with limited mouth opening. The device is suitable for placement of Vector Tass mini-implants.

Claims (1)

A device for installing orthodontic mini-implants in the region of the median palatine suture, including a ribbed handle and a tip for a mini-implant, characterized in that the handle and tip are permanently connected and have a total length of 28 mm, while the working part of the nozzle has a length of 11 mm , diameter 4 mm and at the end there is a blind triangular hole complementary to the head of the mini-implant, and the diameter of the device handle is 7 mm, and for positioning the mini-implant in the bone at an angle of 90°, the tip is located at a developed angle of 180° with respect to the handle.

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