Porous titanium scaffolds produced by powder metallurgy for biomedical applications
AUTOR(ES)
Vasconcellos, Luana Marotta Reis de, Oliveira, Marize Varella de, Graça, Mário Lima de Alencastro, Vasconcellos, Luis Gustavo Oliveira de, Carvalho, Yasmin Rodarte, Cairo, Carlos Alberto Alves
FONTE
Materials Research
DATA DE PUBLICAÇÃO
2008-09
RESUMO
Porous titanium scaffolds are promising materials for biomedical applications such as prosthetic anchors, fillers and bone reconstruction. This study evaluated the bone/titanium interface of scaffolds with interconnected pores prepared by powder metallurgy, using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Porous scaffolds and dense samples were implanted in the tibia of rabbits, which were subsequently killed 1, 4, and 8 weeks after surgery. Initial bone neoformation was observed one week after implantation. Bone ingrowth in pores and the Ca/P ratio at the interface were remarkably enhanced at 4 and 8 weeks. The results showed that the interconnected pores of the titanium scaffolds promoted bone ingrowth, which increased over time. The powder metallurgy technique thus proved effective in producing porous scaffolds and dense titanium for biomedical applications, allowing for adequate control of pore size and porosity and promoting bone ingrowth.
Documentos Relacionados
- Production of titanium alloys for advanced aerospace systems by powder metallurgy
- Porous stainless steel for biomedical applications
- Production of a low young modulus titanium alloy by powder metallurgy
- Microstructure development on sintered Ti/HA biocomposites produced by powder metallurgy
- Properties and Performance of Ultrafine Grained Titanium for Biomedical Applications