The salivary glands work continuously, in addition to keeping the oral environment moist, saliva also has the function of disinfecting, cleaning the mouth, and helping digestion.
In general, healthy adults secrete about 1-1.5 liters of saliva per day, an average of about 30 ml per hour.
Saliva secretion increases when we eat or when the nerves in the brain are stimulated.
Mouth breathing, stress, fatigue, and unbalanced sleeping positions can all cause drooling while sleeping.
In general, drooling while sleeping is common in children because their lips are still weak, and their oral cavity does not have the function of controlling drooling and swallowing saliva.
If adults suddenly and frequently drool while sleeping, they need to be alert to the following diseases:
