Saliva collection © NIDCR

The most important of the natural defenses against tooth decay is saliva. Saliva, the fluid that is normally present in the mouth, is produced by the salivary glands located around the mouth. A normal healthy individual can produce up to 1.5 liters of saliva per day. If salivary flow is disturbed, tooth decay can progress very rapidly. The contents of saliva can be analyzed using a  saliva test. Continue reading →