Saliva Saliva is the natural mouthwash we were born with. People who do not have sufficient flow of saliva tend to suffer from more dental caries and periodontal disease. They have more trouble wearing dentures .
Bad breath is worst when there is little or no saliva flow, for example after a night's sleep.
As soon as one wakes up and starts to salivate, the smell recedes somewhat. Yoga teaches another way to get the saliva flowing. Roll your tongue from the sides to the center and breathe in very quickly through your mouth. Many things have an effect on reducing saliva flow. Not drinking enough is one.