1. Department of Orthopaedic; Medical Science Faculty; State University of Campinas; Campinas; Brazil
2. Oswaldo Cruz Foundation; Rio de Janeiro; Brazil
3. Department of Biomaterials; Sahlgrenska Academy; University of Gothenburg; Gothenburg; Sweden
4. Department of Prosthodontics; Malmo University; Faculty of Odontology; Malmö; Sweden
5. Institute of Physics Gleb Wataghin; State University of Campinas; Campinas; Brazil