Rinse with warm salt water several times a day
Avoid spicy, acidic, salty, or crunchy foods
Use a soft-bristled toothbrush
Keep the mouth clean with gentle brushing and flossing
Drink plenty of water
Suck on ice chips or cold drinks to reduce discomfort
Use over-the-counter oral pain relief gels if appropriate
Avoid smoking and alcohol
Eat soft foods until the sore heals
Avoid touching or picking at the sore
See a dentist or doctor if it lasts more than 2 weeks, gets worse, or is very painful