1. Department of Prosthodontics; Dentistry School; University of Pernambuco (UPE); Recife Brazil
2. Department of Oral and Maxillofacial Surgery; Dentistry School; University of Pernambuco (UPE); Recife Brazil
3. Department of Dental Materials and Prosthodontics; Araçatuba Dental School; São Paulo State University (UNESP); Araçatuba Brazil