Rinse with warm salt water several times a day
Use a baking soda rinse
Avoid spicy, acidic, salty, or rough foods
Drink plenty of water
Use a soft-bristled toothbrush
Avoid alcohol-based mouthwash
Try over-the-counter oral gels or protective pastes
Take over-the-counter pain relievers if needed
Suck on ice chips or use cold drinks to reduce pain
Avoid smoking and tobacco products
Keep good oral hygiene
Check for and avoid foods that trigger the sores
Manage stress if sores are stress-related
See a dentist or doctor if sores last more than 2 weeks
Seek medical care if sores are severe, frequent, or accompanied by fever, swelling, or trouble eating or drinking