METHOD OF PRODUCING BIOCOMPATIBLE COATING ON DENTAL IMPLANTS Russian patent published in 2014 - IPC C25D11/26 A61K6/93 B82B1/00 

FIELD: chemistry.

SUBSTANCE: method involves obtaining a biocompatible coating on dental implants made of titanium and alloys thereof, which involves placing articles into an aqueous electrolyte solution containing potassium hydroxide and nanostructured hydroxyapatite in form of an aqueous colloidal solution, and exciting micro-arc discharges on the surface of the articles. The treated articles are oxidised in a chemical-resistant non-conducting bath: two batches of treated articles are simultaneously placed in the electrolyte solution by pre-attaching articles of one batch to terminals for treated articles, and articles of the other batch to terminals of an auxiliary electrode; and the electrolyte further contains sodium hydroxide, sodium hydrophosphate, liquid sodium glass, sodium metasilicate, in the following ratios, with respect to mass of dry substance in g/l of the composition: potassium hydroxide KOH - 2, sodium hydroxide NaOH - 1, sodium hydrophosphate Na₂HPO₄×12H₂O - 5, liquid glass nNa₂O·mSiO₂ (M=3.2) - 5, sodium metasilicate Na₂SiO₃×9H₂O - 8, nano-dispersed hydroxyapatite - 0.5-5. Deviation from said concentrations of electrolyte components does not exceed ±10%.

EFFECT: improved method.

1 tbl, 4 dwg, 1 ex