Dr Ray Mrisho Masumo is the Assistant Director of Oral Health at the Ministry of Health in Tanzania. He gained his dental degree at the University of Dar es Salaam in 1999, followed by a Masters of Public Health from the National Institute of Public Health in Saitama, Japan, in 2005. In 2013 he was awarded his PhD from the University of Bergen, Norway, focussing on Early Childhood Caries in Tanzania and Uganda. He has been a Centre director at the National Institute for Medical Research in Tanzania and also lectured, taught and managed in his roles as Hospital Director and Regional Dental Officer.