Rinse your mouth with warm salt water several times a day
Use a baking soda rinse to reduce irritation
Avoid spicy, acidic, salty, and crunchy foods
Use a soft-bristled toothbrush
Avoid alcohol-based mouthwashes
Apply an over-the-counter oral gel or paste for pain relief
Take over-the-counter pain relievers if needed
Stay hydrated
Manage stress
Avoid biting the inside of your mouth
Check for possible triggers like certain foods, toothpaste, or dental appliances
See a dentist or doctor if sores are large, frequent, very painful, or last longer than two weeks