Electrochemical characterization of sol-gel coatings containing Sr-silicate glass particles applied onto surgical grade stainless steel

CERE, SILVIA; SHEILA OMAR; JOSEFINA BALLARRE

praga

Congreso; 63st Meeting of the Internacional Society of Electrochemistry; 2012

The use of AISI 316L stainless steel as permanent implant in orthopaedic surgery is conditioned due to its poor corrosion resistance en physiological fluids. The last can be overcome by applying a hybrid organic-inorganic sol-gel coating. The coating acts as barrier for ion migration and simultaneously can be loaded with different kind of functional particles to improve the implant performance regarding bone attachment to the implant. An increasing number of investigations in the bone tissue engineering field demonstrate that bioactive silicate glasses (BG) may improve vascularisation and bone regeneration. The chemical composition of BG can be varied to tailor their rate of dissolution in the biological environment. Substituting strontium (Sr) for calcium generates a local controlled release of Sr-ion to the media. Strontium is known to reduce bone resorption and stimulate bone formation.