Subir Banerji, BDS, MClinDent(Prostho), PhD, MFGDP(UK), FDS RCPS(Glasg), FICOI, FICD FIADFE is a Dental Practitioner, Programme Director MSc Aesthetic Dentistry and a Senior Clinical Lecturer at King's College London, Faculty of Dentistry, Oral & Craniofacial Sciences, Private Practice, London, UK. Shamir Mehta, BDS, BSc, MClinDent(Prosth), FFGDP(UK), FDS RCPS (Glasg), FDS RCS (Eng), FICD is a Dental Practitioner, Senior Clinical Lecturer at King's College London, Faculty of Oral & Craniofacial Sciences/Deputy Programme Director MSc Aesthetic Dentistry, Private Practice Middlesex, London, UK; Researcher at Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands. Niek Opdam, DDS, PhD is an Associate Professor at Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen; Dental Practitioner in Adhesive Dentistry, Tandzorg Ulft, The Netherlands. Bas Loomans, DDS, PhD is a Dental Practitioner, Assistant Professor at Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen; Dental Practitioner in Mondzorg Oost, Nijmegen, The Netherlands.