Introduction
erosion, dentine, bulk loss of tissue [Saliva, tooth, enamel mineral loss
EROSION
Dental erosion is the loss of dental hard tissues due to the frequent and prolonged contact of acids on the tooth surfaces, not caused by bacteria. It starts with enamel mineral loss and, consequently, a softening of the surface, advancing to a bulk loss of tissue [Saliva is a natural protection for the teeth. It forms a salivary pellicle composed of proteins, glycoproteins, peptides, lipids and other macromolecules, and it hinders the direct contact of the acids with the tooth surfaces [Currently, many compounds have been tested in an attempt to modify the salivary pellicle and increase its resistance against erosion [Investigations on dentine are essential because the organic matrix will greatly influence the outcome [Likewise, fluoride can also modify the salivary pellicle [