Enamel erosion occurs when acids in the mouth wear away that important protective layer. In many cases, this occurs when plaque bacteria produced by the consumption of sugary foods attack the enamel. In children, enamel erosion is almost always related to diet, with sugary snacks and beverages being the main culprit. Substances such as chocolates and candy are broken down by bacteria in our mouths.
When the pH drops to 5.5 tooth decay begins. Tooth enamel is the hardest substance in our body and corrodes. The saliva produced by the salivary glands is slightly alkaline, helping to increase the pH, to a certain extent, but toothpaste containing a basic substance is used to neutralize excess acid in the mouth.