METHOD FOR MAKING DENTAL IMPLANT OF NANOTITANIUM USING LASER SURFACE STRUCTURING AND NANOSTRUCTURED COMPOSITE COATING AND IMPLANT Russian patent published in 2020 - IPC A61C13/03 

FIELD: medicine.

SUBSTANCE: group of inventions relates to the field of medical equipment and can be used in dentistry and traumatology, in particular when creating dental implants. Disclosed is a method of producing a dental implant with a bioactive nanocoating based on a calcium-phosphate-carbon composite, involving the following steps: a) manufacturing of CNC implant on CNC lathe from nanotitanium; b) laser structuring of implant surface; c) treatment of the surface of the implant obtained at stage b, including treatment of the implant with accelerated ions up to 1 keV at pressure (2–6) × 10–2 Pa with negative-bias voltage supply with increase from 800 to 1500 V for 1 h ; d) layer-by-layer sputtering on base of implant obtained at stage b of multilayer coating representing composite with thickness of up to 2 mcm, made in two stages: Stage 1 comprises application of composite layer consisting of titanium with carbon and calcium hydroxyapatite, simultaneous arc spraying of titanium cathode and pulse-arc spraying of hydroxyapatite of calcium and graphite cathode with increase of carbon concentration from 10 to 55 wt. %; Stage 2 includes sputtering on top of first composite layer with hardness of 100–120 GPa of carbon nanocoating with thickness of up to 1.0 mcm by pulse-arc spraying of graphite cathode in condensation conditions of diamond-like film at temperature not higher than 150 °C and energy of carbon ions of not more than 100 eV. Also disclosed is a titanium implant with a bioactive nanocoating based on a calcium-phosphate-carbon composite obtained using said method.

EFFECT: group of inventions provides an implant characterized by high biocompatibility, bactericidal properties (reduces evident dystrophic and necrotic processes of living tissue), as well as high level of strength of the surface of the implant.

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