METHOD OF DENTAL PROSTHETICS WITH SUPPORT ON INTRAOSSEOUS IMPLANTS (EMBODIMENTS) Russian patent published in 2024 - IPC A61C8/00 

FIELD: medicine.

SUBSTANCE: group of inventions relates to surgical and orthopaedic dentistry and is intended for use in denture replacement. In one of the embodiments, implants are inserted into bone tissue according to an individual navigation template and a dental prosthesis made from the impression using transfers is fixed on the implants. Cone-beam computed tomography of the jaw bones is performed, and zones not affected by atrophy are determined. Then, intraoral scanning is used to set the implant insertion angles along the maximum length of each zone and dimensions of the individual stereometric navigation template, which is made with support surfaces for the tool holder at the inputs of the guide holes, oriented along the maximum length of the corresponding zone not affected by atrophy. Diameter of each guide hole is 1.5–2 mm less than the maximum transverse size of the corresponding zone not affected by atrophy. Individual stereometric navigation template is fixed on bone tissue after formation of mucoperiosteal flap. Implants are installed and bone tissue is reduced, and sharp bone edges are smoothed, wherein the eruption contour is formed by means of a bone profiler, bone nippers and a hard-alloy bur, and wound is closed with resorbing suture material, having previously installed on implants angular abutments with healing caps, which are removed before obtaining an open tray impression, made to determine the central relationship with the prosthesis of the second jaw, and re-installed on the angular abutments after taking the impression by the open tray method, the obtained impression is fastened into a single roller with the impression of the second jaw, and the central line, the horizon of the teeth, the line of smiles and the position of the canines are marked on the roller. In another embodiment, cone-beam computed tomography of the upper jaw is performed, the upper jaw zones not affected by atrophy are determined and by means of intraoral scanning angles for introduction of implants are determined along the maximum length of the corresponding upper jaw zone, not affected by atrophy. Then, implants with diameters of 1.5–2 mm less than the maximum transverse size of the corresponding upper jaw zone are selected, a mucoperiosteal flap is formed and implant bed, implants are installed, and bone tissue is reduced, and sharp bone edges are smoothed. Eruption contour is formed by means of a bone profiler, bone nippers and a carbide bur, and wound is closed with resorbing suture material, having previously installed on implants angular abutments with healing caps, which are removed before obtaining an open tray impression, made for determining the central relationship with the prosthesis of the lower jaw, and re-installed on the angular abutments after taking the impression by the open tray method, the obtained impression is fastened into a single roller with the impression of the second jaw, and the central line, the horizon of the teeth, the line of smiles and the position of the canines are marked on the roller. According to the obtained impressions, according to both embodiments, an orthopaedic structure is made, with its subsequent fixation in the oral cavity; the patient’s visit is prescribed in a week, in 2, 6 and 12 months from the moment of the prosthesis fixation.

EFFECT: methods allow reducing the length of prosthetics and reducing the number of injuries of denture replacement.

2 cl, 1 ex