Tooth Wear

• Unit of Dental Hygiene - Section of Dentistry - Department of Clinical, Surgical, Diagnostic and Paediatrics - University of Pavia — Pavia, Lombardy, Italy

• Van Yuzuncu Yil University, Faculty of Dentistry — Van, Turkey (Türkiye)

• Institute of Dentistry of Sechenov University — Moscow, Russia

• Cairo University — Cairo, Egypt

• GSK Investigational Site — Indianapolis, Indiana, United States

• Johns Hopkins Center for American Indian Health — Shiprock, New Mexico, United States

Not specified

• Faculty of Dentistry , Khon Kaen University — Khon Kaen, Thailand

• UEPJMF — São José dos Campos, São Paulo, Brazil

• School of Oral and Dental Science — Bristol, United Kingdom