1 Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Str. Koryun 2, Yerevan 0025, Armenia.
2 Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah Al Munawwarah, Medina 41311, Saudi Arabia.
3 Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan.
4 Department of Conservative Dentistry & Endodontics, Saveetha Dental College & Hospitals, Saveetha Institute of Medical, Technical Sciences University, Chennai 600077, India.
5 Department of Restorative Dentistry & Endodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh 12211, Cambodia.
6 Department of Dental Materials, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, 1081 LA Amsterdam, The Netherlands.