What Is Acid Erosion of the Teeth?

Acid erosion is the wearing away of tooth enamel. Enamel is mostly calcium, which is dissolved away by acid quite easily. Food or drink with a pH of 5 or less can dissolve the enamel from teeth. 
What are the symptoms, signs and effects of acid erosion? 
Acid erosion can wear away the enamel and change the texture, shape and appearance of your teeth, and may also lead to tooth sensitivity. People often do not become aware of acid erosion until it has reached an advanced stage. Detailed dental examinations can help to detect acid erosion in its earlier stages. Here are the typical signs and effects of acid erosion:
1.  Transparency: Teeth may appear slightly "glassy" or transparent near their biting edges. This tends to be an earlier warning sign of acid erosion.