RU117087U1 - Wicker NIKELIDTITANE MEMBRANE WITH MEMORY FORM FOR DIRECTED TISSUE REGENERATION - Google Patents

Abstract

Braided nickel-titanium membrane with shape memory for directed tissue regeneration in dentistry is made in the form of a mesh plate, characterized in that it consists of superelastic threads woven by textile technology made of TN-10 alloy with a diameter of 50-60 μm with a distance between adjacent threads of 100-200 μm, the plate is bent in the shape of the alveolar ridge and retains the given shape due to the memory effect.

Description

The utility model relates to dentistry.

The restoration of bone tissue in implantology and periodontics using a mechanical barrier in the form of a membrane is an urgent task for segmental defects of the alveolar processes of the jaw. The purpose of the membrane is to prevent the growth of connective tissue cells in the thickness of the bone material. Various types of membranes are currently known.

Flexible membranes are known, for example, a barrier membrane for surgical dentistry (certificate for utility model RU 15960 U1, publication number 15960 dated 11/27/2000) is made in the form of a film of porous collagen-containing material. The membrane is poorly fixed in the area of the defect, does not ensure the preservation of the given shape of the alveolar ridge.

The closest analogue is a membrane made of metal titanium (Museev I.U., Olesova V.N., Framovich O.3. Practical dental implantology. - M .: Paradise, 2000. - S. 197-201.), Which they select the size of the surgical wound, give the necessary round shape with the help of surgical instruments, lay on top of the implant inserted into the bone bed, and fix it to the surrounding bone tissue of the alveolar bone of the jaw using special small fixing titanium screws. The disadvantage of this analogue is the lack of oxygen access, it is not always possible to recreate the necessary form of the alveolar process, the need to use fixing screws and remove them after bone regeneration.

The purpose of this useful model is to increase the efficiency of restoration of partial defects in the bone tissue of the alveolar processes of the jaw using woven membranes made of bioinert material of titanium nickelide.

The goal is achieved due to the fact that the nickel-titanium membrane is made in the form of filaments woven by textile technology with a diameter of 50-60 microns from TN-10 alloy and with a distance between adjacent threads of 100-200 microns.

As a result, when using the proposed model, the following advantages are achieved:

- nickelide titanium membrane has biomechanical and biochemical compatibility with body tissues;

- no additional elements are required to fix the membrane;

- the membrane is fixed and retains the given shape of the alveolar process due to the memory effect;

- the mesh structure does not impede the migration of protective cells and ensures the flow of oxygen into the submembrane space, thereby preventing tissue ischemia;

- no re-operation is required to remove the membrane and fixing elements.

Utility Model Implementation

The membrane is made from titanium nickelide braided by textile technology (titanium alloy TN-10) with a diameter of 50-60 microns, with a distance between adjacent threads of 100-200 microns. Further, the membrane is heated to 400 ° C, and an arcuate shape is set for the size of the alveolar process.

The use of this membrane is carried out as follows: after preliminary anesthesia, an incision is made along the ridge of the alveolar ridge in the area of the defect, the mucoperiosteal flap is peeled off, the defect is filled with bone-plastic material, one leg of the membrane is inserted under the periosteal flap from the vestibular side, and the other from the lingual (palatine ) The mucoperiosteal flap is sutured tightly.

The mesh structure of the membrane provides the oxygen supply necessary for the vital functions of cells, as well as biological fluids. As a result, the likelihood of rejection is reduced. The membrane has osteoconductive properties, which creates favorable conditions for the restoration of bone structure. Using this membrane in an experiment in 12 dogs with atrophy and defects of the alveolar ridge, the shape of the ridge of the alveolar ridge was completely restored, and histologically, after 6 months, the formation of lamellar bone tissue was detected, whereas in the control group, where the membrane was not used, atrophy of the alveolar ridge was observed .

In dogs, when performing bone grafting with the proposed membrane, there was no need to perform repeated operations, since due to the given shape, bone tissue was regenerated completely in the shape of the alveolar ridge. The restoration of the dentition using dental implants occurred without repeated bone grafting.

When performing bone grafting using the proposed membrane, the cost of the procedure is reduced due to the low cost of the membrane, and the dental implantation procedure itself is also simplified, since it is not necessary to perform repeated operations to restore the ridge of the alveolar ridge.

Claims (1)

The woven nickel-titanium membrane with a shape memory for directed tissue regeneration in dentistry is made in the form of a mesh plate, characterized in that it consists of superelastic filaments woven using textile technology from TN-10 alloy with a diameter of 50-60 microns with a distance between adjacent threads of 100-200 microns, the plate is curved in the shape of the ridge of the alveolar ridge and retains the given shape due to the memory effect.