How the color of your teeth changes may help point to the cause: Yellow. As you age, the white enamel surface of your teeth may wear down. The yellow core of your teeth becomes more visible.

Foods and drinks containing artificial colors and dyes can also cause significant staining of the teeth. These contain particles that can stick to microscopic pores in the tooth enamel.

Acidic foods can make the teeth look yellow by wearing down the enamel. People who are concerned about the color of their teeth should avoid the excessive consumption of citrus, coffee ...