METHOD FOR SUBANTRAL AUGMENTATION USING A CHEEK FAT BODY ACCORDING TO TOLMACHEV Russian patent published in 2024 - IPC A61B17/24 A61C8/00 A61F2/28 

FIELD: medicine; surgical dentistry; maxillofacial surgery.

SUBSTANCE: under local anesthesia, an incision is made with a scalpel along the crest of an alveolar process of the upper jaw to the bone. Further, the mucoperiosteal flap is separated. From the vestibular side, a trephine opening is created in the maxillary sinus. Further, the Schneider’s membrane is separated from the bone walls and lifted, exposing the palatal wall of the alveolar pocket of the maxillary sinus. After Schneider’s membrane is lifted, the exposed palatal wall of the alveolar pocket is perforated to form two holes. Thereafter, a cheek fat body is approached by incising a mucosa in a distal portion of an upper fornix of an oral vestibule behind a zygomaticoalveolar crest. Further, the incision is extended to visualize the cheek fat body. Cheek fat body fragment is separated and mobilized. Ligature is then ligatured through the distal end of the recovered fragment. Ends of the ligature are delivered through the trephine opening to the perforations in the palatal wall of the alveolar pocket. Mobilized cheek fat body fragment is displaced subantrally. Suture material is delivered through the perforated holes from the palatal side, where a surgical knot is formed. After fixation of mobilized cheek fat body fragment, implant is installed in prepared bone canal. Further, the separated mucoperiosteal flap is laid back and the wound is closed.

EFFECT: method enables to perform subantral augmentation and dental implantation in the area of molars and premolars of the upper jaw with the minimum allowable residual height of the alveolar process, provide satisfactory primary stability of the dental implant, isolate the dental implant from the non-sterile environment of the maxillary sinus in a minimally invasive manner without disrupting the osteointegration process with a high degree of engraftment of the cheek fat body, reduce the length of dental rehabilitation.

9 cl, 1 ex