The mouth is an ecosystem — living organisms continually interact with every other element in their environment. The teeth are composed of an outer covering of enamel, a highly mineralized crystalline structure composed mainly of calcium and phosphate. They are also bathed in a remarkable fluid — saliva, which plays a crucial role in maintaining a neutral environment or balance between the acids and bases in your mouth.
Acidity is measured by the pH scale, which ranges from 1 – 14. A pH value of 1 is extremely acidic while a pH value of 14 is extremely basic. The pH of the mouth is generally 7 — neutral.