1. Tayane H Resende, MS, Analytical Laboratory of Restorative Biomaterials - LABiom-R, School of Dentistry, Federal Fluminense University, Niterói, RJ, Brazil
2. Kátia R Reis, DDS, MS, PhD, Department of Prosthodontics and Dental Materials, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
3. Luís H Schlichting, DDS, MS, PhD, Department of General Dentistry, School of Dental Medicine, East Carolina University, Greenville, NC 27834, USA
4. Pascal Magne, DMD, PhD, The Don & Sybil Harrington Professor of Esthetic Dentistry, Department of Restorative Sciences, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA 90089, USA