FIELD: medicine; surgical dentistry.
SUBSTANCE: incision is made in the oral cavity along the crest of the alveolar process of the upper jaw in the lateral section with the transition to the transitional fold in the region of the premolars of the mucous membrane. The mucoperiosteal flap is exfoliated. A hole is created in the cortical plate in the projection of the central region of the cyst, with the help of which the contents of the retention cyst are removed from the sinus cavity. By sawing out a bone block on the anterior wall of the maxillary sinus, a burr hole is formed, the sides of which are located at a distance of 2–3 mm from the hole, to remove the contents of the retention cyst without violating the integrity of the Schneider's membrane. After that, the Schneider membrane is peeled off along the perimeter of the inner part of the anterior surface of the upper jaw around the bone block. Then the bone block together with the membrane is inverted into the sinus cavity. A collagen membrane is placed under the exfoliated mucosa. A xenograft is placed in the resulting space. The hole is closed with a collagen membrane. The flap is placed in place and sutured.
EFFECT: method allows to restore the height of the upper jaw for further dental implantation, significantly reduce the risk of damage to the Schneider's membrane, reduce the stages of surgical treatment and the duration of the rehabilitation period, which contributes to the restoration of the dentition in the shortest possible time.
1 cl, 2 ex, 3 dwg
