Enamel wear: nanoindentation results of six different preventive treatments - Bueno, Tamires de Luccas; Fiuza, Cristina Tebechrani; Fernandes, Ana Carla; Magalhães, Ana Carolina; Franca, Rodrigo; Honório, Heitor Marques (IADR/AADR/CADR General Session, 2019)