Maintain good oral hygiene
Brush gently with a soft-bristled toothbrush
Use a mild, non-irritating toothpaste
Avoid spicy, acidic, and very salty foods if they trigger ulcers
Stay hydrated
Eat a balanced diet rich in vitamins and minerals
Avoid biting the inside of your mouth
Reduce stress
Get enough sleep
Avoid tobacco and alcohol
Check for food sensitivities or allergies
Avoid very hot foods and drinks
Use protective gear if you grind your teeth or have mouth trauma
Manage underlying health conditions
Visit a dentist or doctor if ulcers are frequent or severe