Brush gently with a soft-bristled toothbrush
Floss daily and carefully
Rinse with warm salt water
Use an alcohol-free antiseptic mouthwash
Apply a cold compress to the outside of the mouth
Avoid smoking and tobacco products
Avoid very hot, spicy, or acidic foods
Stay hydrated
Eat a balanced diet with enough vitamin C and calcium
Replace your toothbrush if the bristles are worn
Manage stress and get enough sleep
See a dentist if swelling lasts more than a few days or is severe