Rinse with warm salt water several times a day
Rinse with a baking soda solution
Use an over-the-counter numbing gel or oral pain reliever
Apply a protective oral paste or patch
Avoid spicy, acidic, salty, and crunchy foods
Use a soft-bristled toothbrush
Switch to a mild, non-irritating toothpaste
Stay hydrated
Suck on ice chips or cold water
Take over-the-counter anti-inflammatory pain relief if safe for you
Use an antiseptic mouth rinse if recommended by a pharmacist or dentist
Reduce stress and get enough sleep
Avoid biting the sore or irritating it with braces or dental appliances
See a dentist or doctor if sores are large, frequent, very painful, or last more than two weeks