Since saliva normally helps neutralize acid and replace minerals on teeth, a lack of saliva leads to more cavities.
What causes a very dry mouth?
Dry mouth can be due to certain health conditions, such as diabetes, stroke, yeast infection (thrush) in your mouth or Alzheimer's disease, or due to autoimmune diseases, such as Sjogren's syndrome or HIV/AIDS. Snoring and breathing with your mouth open also can contribute to dry mouth. Tobacco and alcohol use.
What is the function of saliva?
Keeps your mouth moist and comfortable. Helps you chew, taste, and swallow. Fights germs in your mouth and prevents bad breath. Has proteins and minerals that protect tooth enamel and prevent tooth decay and gum disease.
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