Porosity Characterization of Sintered Titanium Scaffolds for Surgical Implants |
| Journal |
Materials Science Forum (Volumes 591 - 593) |
| Volume |
Advanced Powder Technology VI |
| Edited by |
Lucio Salgado and Francisco Ambrozio Filho |
| Pages |
36-41 |
| DOI |
10.4028/www.scientific.net/MSF.591-593.36 |
| Online since |
August, 2008 |
| Authors |
Marize Varella de Oliveira,
Anderson C. Moreira,
Luiz Carlos Pereira,
Waléria Silva de Medeiros,
Carlos R. Appoloni
|
| Keywords |
Gamma-Ray Transmission, Implant, Scaffold, Titanium (Ti), X-Ray Microtomography |
| Abstract |
Porosity and pore size are critical features for biomaterial scaffolds as they play an
essential role in bone formation and bone ingrowth in vivo. Therefore, techniques for
scaffolds evaluation are of great importance for their design and processing. Porous titanium
has been used for grafts and implant coatings as it allows the mechanical interlocking of the
pores and bone. In this study, porous titanium samples were manufactured by powder
metallurgy. The porosity quantification was assessed by optical quantitative metallographic
analysis, and non-destructive gamma-ray transmission and X-ray microtomography
techniques, in order to compare their efficacy for porosity evaluation. Pore morphology and
surface topography were characterized via scanning electron microscopy. These techniques
have demonstrated to be suitable for titanium scaffolds evaluation, and micro-CT was the one
that allowed the three-dimensional porosity assessment. |
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