Fluid: Saliva doesn't necessarily have a role in cleaning your teeth. It would matter if you didn't have saliva while cleaning your teeth.
Answered 8/25/2012
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Reduces cavities: Saliva keeps your mouth and teeth moist. When dry there are more cavities because there is a loss of the buffering action against the acids that occur in plaque. With adequate saliva, you can clean better and less tartar will form.
Answered 3/28/2014
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