1. Department of Oral Rehabilitation, Instituto Universitario de Ciencias da Saude (IUCS), Portugal.
2. Industrial Engineer, Chairman of Idearum, Enginyeria i Innovació de Producte, Igualada, Barcelona, Spain.
3. Department of Production and Systems Engineering, University of Minho (UM), Braga, Portugal.
4. Department of Endodontics, Faculty of Odontology, University of Barcelona, Barcelona, Spain.
5. Department of Rehabilitation and Maxillofacial Prostheses, Faculty of Odontology, University of Barcelona, Barcelona, Spain.