Method for the preparation of surfaces of dental or orthopedic implants

摘要

A method for the surface preparation of devices made of titanium or titanium alloys, zirconium, zirconia, alumina or zirconia/alumina compounds, stainless steels and cobalt-base superalloys for medical use; the devices being implantable in the human body or in animals and attached extracorporeal parts made with the same materials, particularly for dental and orthopedic implantology. The implantable device is treated by exposing at least one portion of the surface of the device to a solution including hydrofluoric acid, phosphoric acid, at least one surfactant substance and water; for a time period and in conditions sufficient to provide the surface of the implant with the desired surface roughness and the formation of self-induced surface titanium dioxide, maintaining the structural integrity of the device and without altering the centesimal measurement size. The surface thus is rinsed with demineralized water and ultrasounds in order to prevent metalosis phenomena.

主权项

1. A method for the surface preparation of dental or orthopedic implants, comprising:
a) exposing at least one portion of said surface in an acid-water-surfactant solution, for a period of from 2 to 10 minutes to self-induce surface oxide, said solution comprising:
i) hydrofluoric acid,ii) phosphoric acid,iii) at least one surfactant, andiv) water; b) immersing the surface in bidistilled water and applying ultrasound to said immersed surface, said ultrasound being in the 22-35 kHz frequency range and applied for 5 to 10 minutes; c) rinsing the implant under running water at an end of the ultrasound application; d) repeating the step b) multiple times and rinsing with every operation; e) completing with a rinsing in a solution comprising at least water and sodium bicarbonate; and f) drying the surface.