Affiliation: | 1. Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland;2. Akademie für Orale Implantologie, Private Practice, Vienna, Austria;3. Aesthetic Dent, Private Practice, Szczecin, Poland;4. University of Santiago de Compostela, Santiago de Compostela, Spain;5. University of Connecticut, Farmington, CT, USA |