STAPHYLOCOCCUS AUREUS ADHERENCE DECREASE ON HYBRID ORGANO-INORGANIC SOL-GEL COATING

Prosthetic joint infections (PJI) occur infrequently, but they represent the most devastating complication with high morbidity and substantial cost. Staphylococcus aureus are the most common infecting agents associated with acute PJI, and also appear in some cases of delayed PJI1. S. aureus biofilm development can be divided in two stages: adhesion and proliferation2. To avoid PJI bacterial adhesion has to be decreased.Hybrid organo-inorganic sol-gel coatings are proposed as a promising biomaterial improvement3. One of these compounds is a mixture of two organopolisiloxanes: 3-methacryloxypropyltrimethoxysilane (MAPTMS) and tetramethylorthosilicate (TMOS). The aim of this work was to evaluate bacterial adhesion on MAPTMS-TMOS coating compared to titanium parts made by powder metallurgy.MAPTMS-TMOS sol-gel coating was produced using a molar ratio of 1:2 (MAPTMS:TMOS) and dispersed in ethanol. The sol-gel was deposited by dip-coating on titanium parts made by powder metallurgy followed by a thermal treatmen...