what causes dry mouth mouth
Dry Mouth at Night: Causes & Treatment. Dry mouth is a common condition that frequently occurs at night. It is caused when the salivary glands do not produce enough moisture to keep the mouth wet. Saliva helps the mouth to naturally combat the acids and bacteria that cause tooth decay, gum disease, and bad breath. An absence of saliva during the night is not only uncomfortable, but it can also disturb sleep and negatively affect oral health. SYMPTOMS OF DRY MOUTH AT NIGHT.