What happens if salivary ducts are closed ?

Explanation

1) salivary glands secrete saliva. saliva contains mucin and ptyalin or salivary amylase.
2) Mucin gives lubrication to the bolus so that we can easily swallow the food .
3) ptyalin or salivary amylase digest the complex carbohydrates into simple sugars.
4) If salivary ducts are closed the above processes don't occur. So that food is not digested property.