Risk factors for dental erosion in a group of 12- and16-year-old Brazilian schoolchildren - Gurgel, Carla Vecchione; Rios, Daniela; Oliveira, Thaís Marchini de; Tessarolli, Vanessa; Carvalho, Flávia Patto; Machado, Maria Aparecida de Andrade Moreira (International Journal of Paediatric Dentistry, 2011)