1. Prosthodontics; Faculty of Medicine; University of Salamanca; Salamanca Spain
2. Prosthodontics; Department of Dentistry; University of Granada; Granada Spain
3. Department of Dentistry; University of Granada; Granada Spain
4. Orthodontics; Faculty of Medicine; University of Salamanca; Salamanca Spain
5. Periodontics; Department of Dentistry; University of Salamanca; Salamanca Spain