Mouth ulcers or sores are caused by
1. B complex deficiency
2. Sharp edges in the teeth
3. Gastritis
4. Antibiotic or other drug induced
5. Even hereditary, in some cases.
To start with maintain oral hygiene
Drink more water
Don't eat highly polished rice
Take Riboflavin tablets for a week
If complaint persist, visit your doctor
Answered2015-08-25 10:58:59
Let others know if this answer was helpful