© РИА Томск. Павел Стефанский
TOMSK, Sep 18 – RIA Tomsk.
Scientists of Tomsk State University (TSU) with colleagues from other
universities invented and tested a new anti-corrosion coating for titanium
implants; it protects dental, spinal and other implants from exposure to
biological fluids during intense loads in the human body, the TSU press service
said on Tuesday.
It is specified that the scientific group, which
includes scientists of TSU, Tomsk Polytechnic University (TPU) and Siberian
State Medical University (SSMU), presented the test results of a new
anti-corrosion coating. The Federal Institute of Industrial Property has
already issued scientists a priority certificate on the invention of a new
method for protecting the surface of titanium implants against corrosion.
"Thanks to the developed coating, titanium alloy
implants are better protected from the effects of biological fluids under
intensive loads in the human body. Effective protection extends their service
life. The next stage of the project will be the optimization of coating methods
and testing on laboratory animals", – is said in the report.
According to the press service, the method of
protecting superelastic titanium nickelide is in the magnetron sputtering of a
three-layer Ti-Ni-Ti laminate and subsequent heating. As a result of heating,
the laminate turns into a multilayer gradient coating, which serves as a
barrier to the diffusion of oxygen to the substrate and effectively protects
the implant against aggressive biological fluids of the human body.
© пресс-служба Томского государственного университета
Scientists tested the cytocompatibility of sputtering
with platelets. The cell culture was seeded on treated and untreated samples
and a comparative analysis was performed. As a result, in the same period, the
cells multiplied on the treated samples, but not multiplied on the untreated
ones, which indicates a greater cytocompatibility of the treated surfaces.
"Thus, the method proposed by physicists and
biologists to protect the surface of titanium alloys was effective in
biological fluids. It can work for a long time on intensively loaded dental and
spinal implants. Currently, the work is at the stage of laboratory experiments.
Installation of implants to animals is planned at the next stages", – reports