Effect of different salivary exposure times on the rehardening of acid-softened enamel - Alencar, Catarina Ribeiro Barros de; Mendonça, Fernanda Lyrio; Guerrini, Luísa Belluco; Jordão, Maisa Camillo; Oliveira, Gabriela Cristina de; Honório, Heitor Marques; Magalhães, Ana Carolina; Rios, Daniela (Brazilian Oral Research, 2016)