METHOD OF SIMULATION OF SOFT TISSUES DEFECT OF ALVEOLAR PROCESS AND ITS ELIMINATION IN AN EXPERIMENTAL ANIMAL Russian patent published in 2023 - IPC A61B17/00 G09B23/28 

FIELD: medicine.

SUBSTANCE: invention can be used in reconstructive, maxillofacial and experimental surgery. After intramuscular administration of muscle relaxants and sedatives, an antiseptic treatment of the surgical field is carried out. The animal is fixed by four limbs on the operating table in the supine position with the head in a vertical position. After hydropreparation of the soft tissues of the hard palate, two parallel incisions are made in the donor site. Soft tissues are full-layered excised above the top of the alveolar process, its vestibular surface and palatine slope. A defect model is created, to eliminate which the first incision is made along the midline of the hard palate from the border with the soft palate in the direction of the incisive papilla, and the second incision is made on the palatine surface of the alveolar process in the projection of the maxillary tubercle, departing from the marginal edge of the gum by 0.5 cm. Then both cuts are connected in the frontal segment, where they are finally cut along the entire perimeter to the full thickness. A full-thickness muco-periosteal tongue-like flap is formed, separating it from the surface of the palatine bone all the way to the borders of the greater palatine opening. The subsequent preparation of soft tissues around the greater palatine foramen is performed with visualization, isolation, and preservation of the integrity of the neurovascular bundle emanating from the greater palatine foramen. Then the mobilized flap is split along the plane with the formation of two mobile layers: the lower — periosteal, overturned and distributed within the boundaries of the modeled defect, and the upper — epithelial layer, placed on the wound surface of the hard palate, with further fixation with interrupted sutures around the entire perimeter.

EFFECT: method for modeling a soft tissue defect of the alveolar process and its elimination in an experimental animal by maintaining the integrity of the neurovascular bundle allows minimizing the risk of tissue necrosis of a split full-thickness mucoperiosteal flap, increasing the area, thickness and volume of the tissue deficiency to be eliminated in the projection of the alveolar process.

1 cl, 6 dwg, 1 ex