1. Department of Dental Materials and Prosthodontics; Aracatuba Dental School; Univ Estadual Paulista (UNESP); Aracatuba; SP; Brazil
2. Department of Orthopedic Surgery; Rush University Medical Center; Chicago; IL; USA
3. Department of Restorative Dentistry; College of Dentistry; University of Illinois at Chicago; Chicago; IL; USA