1. Faculty of Dentistry; University of São Paulo at Ribeirão Preto; Ribeirão Preto Brazil
2. Department of Mechanical Engineering and Materials Science; Military Institute of Engineering; Rio de Janeiro Brazil
3. Department of Prosthodontics, Faculty of Odontology; Malmö University; Malmö Sweden
4. Department of Oral & Maxillofacial Surgery; Institute of Odontology, Sahlgrenska Academy; University of Gothenburg; Göteborg Sweden
5. Department of Oral and Maxillofacial Surgery and Periodontics; Faculty of Dentistry; University of São Paulo; São Paulo Brazil