1 Associate Professor, Department of Restorative Dentistry, School of Dentistry, International University of Catalunya, Barcelona, Spain; Private practice, Barcelona, Spain. Electronic address: victor.henarejos@uic.es.
2 Resident, Máster en estética y rehabilitación oral, Barcelona Denal Institute by Padrós-Universitat Politècnica de Catalunya, Barcelona, Spain; Private practice, Barcelona, Spain.
3 Private practice, Barcelona, Spain.
4 Adjunct Assistant Professor, Department of Restorative Sciences, Dental College of Georgia at Augusta University, Augusta, Ga; Private practice, Barcelona, Spain.