1. School of Dentistry; University of Alberta; Edmonton Canada
2. Associate Professor; Department of Dental Materials and Prosthodontics; São Paulo State University; São José dos Campos Brazil
3. Professor and Chair; Department of Dental Materials and Prosthodontics; São Paulo State University; São José dos Campos Brazil
4. Associate Professor; Department of Chemical and Biochemical Engineering; University of Western Ontario, Schulich School of Medicine & Dentistry; London Canada
5. Associate Professor and Chair; Department of Restorative Dentistry; Schulich School of Medicine & Dentistry; The University of Western Ontario; London Ontario Canada