METHOD OF PLASTIC REPAIR OF ATROPHIED LOWER RIDGE Russian patent published in 2012 - IPC A61B17/24 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely surgical dentistry, and aims at plastic repair of atrophied lower ridge before dental implantation. A mucous membrane is incised to a periosteum along an alveolar crest and twice vertically along its edges. A vestibular mucous flap is detached. From a vestibular side of the alveolar region at 10 mm from the alveolar crest, the periosteum is incised horizontally to a bone and twice vertically from the alveolar crest downwards to edges of the horizontal incision. The periosteum is detached upwards. It is followed by osteotomy in the middle of the alveolar crest vertically downwards in depth up to 10 mm. Then two vertical osteotomies of the length of 10 mm downright along the edges of the first notch for a cortical layer thickness. Lower edges are jointed by a horizontal notch of the cortical layer. A vestibular bone fragment is fractured thereby not involving the attachment. A mobilised bone fragment is displaced in a vestibular direction. At least one tapered plate 4.0 to 6.0 mm wide, made of a demineralised bone collagen is inserted in the formed space. A drill is used to drill through holes in the bone fragment. Microscrews are screwed in. The remained defect space is filled with a biomaterial. The screws are tightened up. The reconstruction zone is coated with a resorbable membrane from above whereon the periosteum is placed and closed. The mucous flap is mobilised, placed on the wound freely and closed tight.

EFFECT: method enables increasing the width of the lower ridge that is ensured by forming a movable bone fragment.

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