Biocompatibility studies of human fetal osteoblast cells cultured on gamma titanium aluminide
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Ti-48Al-2Cr-2Nb (at. %) (γTiAl), a gamma titanium aluminide alloy originally designed for aerospace applications, appears to have excellent potential for bone repair and replacement. The biological response to γTiAl implant is expected to be similar to other titanium-based biomaterials. Human fetal osteoblast cells were cultured on the surface of γTiAl and Ti-6Al-4V disks with variable surface roughness for both SEM and immunofluorescent analysis to detect the presence of collagen type I and osteonectin, proteins of the bone extracellular matrix. Qualitative results show that cell growth and attachment on γTiAl was normal compared to that of Ti-6Al-4V, suggesting that γTiAl is not toxic to osteoblasts. The presence of collagen type I and osteonectin was observed on both γTiAl and Ti-6Al-4V. The results obtained suggest γTiAl is biocompatible with the osteoblast cells.