METHOD FOR ELIMINATING LOWER JAW ATROPHY Russian patent published in 2019 - IPC A61B17/24 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to maxillofacial surgery, and can be used for eliminating atrophy of distal portion of mandibular alveolar portion. Mucous membrane of the oral cavity is incised along a crest of the alveolar portion of the lower jaw. Mucoperiosteal flap is reclined into the buccal side with subsequent plasty of the lower jaw with a bone autograft, perforation of the external cortical plate of the lower jaw, filling the space between the lower jaw and the bone autograft with a mixture of autogenous bone chips and chips of the osteoplastic material. Bone surface is closed with a collagen membrane with further mobilization of the mucoperiosteal flap. Closing the wound. Elimination of atrophy is carried out in distal portion of alveolar portion of lower jaw by making a hole with length of 25–32 mm, width of 1.5–2.5 mm, depth of 5–6 mm. Osteotomy is performed along its chewing surface. Bone autograft is represented by a bone autograft from a cranial vault prepared by a semilunar incision of skin, subcutaneous fat and periosteum in the parietooccipital region with subsequent peeling and folding of the skin-aponeurotic flap into the frontal region. Rectangular bone autograft of length 25–32 mm, width 15–20 mm and thickness 1.5–2.5 mm is sampled from one side of the cranial vault by retracting from sagittal suture 10–15 mm. Autograft is inserted into the formed hole, followed by filling the space between the lower jaw and the bone autograft with a mixture of autogenous bone chips and osteoplastic material chips Bio-Oss. Bone surface is closed with a collagen membrane. Mucous-periosteal flap is mobilized and wound is closed.

EFFECT: method provides higher functional and aesthetic effect for further dento-jaw rehabilitation of the patient by increasing the volume of bone tissue in the distal mandible.

1 cl, 4 dwg, 2 ex