Having a mouth full of water through out the day is a good habit-adults and children.
After eating a small piece or large piece of candy a mouth full of water helps decrease the acid attack from the sugar. You can swish and spit or swish and drink.
After a drink of milk, juice or pop a person should have a mouth full of water to decrease the acid attack.
Children during the day should have water after eating anything, and a mouth full throughout the day helps as well. After recess and after lunch especially.
A dry mouth is more prone to cavities and gum disease. Water helps rinse off plaque and keeps the plaque from getting to0 sticky.
Lifetime Smiles Dental Hygiene Clinic